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NCMA Annual Report 2021FINAL Northern Cities Management Area Technical Group Northern Cities Management Area 2021 Annual Monitoring Report Prepared for City of Arroyo Grande  City of Grover Beach  Oceano Community Services District  City of Pismo Beach April 13, 2022 Prepared by: GSI Water Solutions, Inc. 5855 Capistrano Avenue, Suite C, Atascadero, CA 93422 This page intentionally left blank for duplex printing. Northern Cities Management Area 2021 Annual Monitoring Report This report was prepared by the staff of GSI Water Solutions, Inc., in collaboration with GEI Consultants, Inc., under the supervision of professionals whose signatures appear below. The findings or professional opinions were prepared in accordance with generally accepted professional engineering and geologic practice. Paul A. Sorensen, PG, CHg Principal Hydrogeologist Project Manager Nathan R. Page, PG Managing Hydrogeologist This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. i Contents Executive Summary .................................................................................................................................................. 1 Groundwater Conditions ...................................................................................................................................... 1 Groundwater Levels ......................................................................................................................................... 1 Change in Groundwater in Storage ................................................................................................................. 2 Groundwater Quality ......................................................................................................................................... 3 Water Supply and Production/Deliveries ............................................................................................................ 3 Threats to Water Supply ....................................................................................................................................... 4 SECTION 1: Introduction .......................................................................................................................................... 7 1.1 History of Litigation .................................................................................................................................. 7 1.2 Description of the NCMA Technical Group ........................................................................................... 10 1.3 NCMA TG Mission Statement ................................................................................................................ 11 1.4 Coordination with Management Areas ................................................................................................. 11 1.5 Development of Monitoring Program .................................................................................................... 12 1.6 Groundwater Monitoring Network ......................................................................................................... 12 1.7 Recent and Ongoing Strategic Initiatives ............................................................................................. 16 1.7.1 Strategic Plan .................................................................................................................................. 16 1.7.2 Central Coast Blue .......................................................................................................................... 16 1.7.3 Phase 1 Groundwater Model ......................................................................................................... 17 1.7.4 Airborne Electromagnetic Survey .................................................................................................. 17 SECTION 2: Basin Setting ....................................................................................................................................... 19 2.1 Setting ..................................................................................................................................................... 19 2.2 Precipitation ........................................................................................................................................... 19 2.3 Evapotranspiration ................................................................................................................................. 23 2.4 Geology and Hydrogeology .................................................................................................................... 23 2.5 Groundwater Flow .................................................................................................................................. 24 SECTION 3: Groundwater Conditions .................................................................................................................... 27 3.1 Groundwater Levels ............................................................................................................................... 27 3.1.1 Groundwater Level Contour Maps ................................................................................................. 27 3.1.2 Historical Water Level Trends ........................................................................................................ 30 3.1.3 Sentry Wells and the Deep Well Index .......................................................................................... 30 3.2 Change in Groundwater in Storage ....................................................................................................... 43 3.3 Water Quality .......................................................................................................................................... 47 3.3.1 Quarterly Groundwater Monitoring ................................................................................................ 47 3.3.2 Analytical Results Summary ........................................................................................................... 50 SECTION 4: Water Supply and Production/Delivery ............................................................................................. 57 4.1 Water Supply .......................................................................................................................................... 57 4.1.1 Lopez Lake ...................................................................................................................................... 57 4.1.2 State Water Project ........................................................................................................................ 59 4.1.3 Groundwater ................................................................................................................................... 61 4.1.4 Developed Water ............................................................................................................................ 63 4.1.5 Other Supplies ................................................................................................................................ 64 4.1.6 Total Water Supply Availability ....................................................................................................... 64 4.2 Water Use ............................................................................................................................................... 67 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. ii 4.2.1 Agricultural Water Supply Requirements ...................................................................................... 67 4.2.2 Rural Use ......................................................................................................................................... 75 4.2.3 Urban Production for Potable Use ................................................................................................. 76 4.2.4 2021 Groundwater Pumpage ........................................................................................................ 76 4.2.5 Changes in Water Production ........................................................................................................ 79 SECTION 5: Comparison of Water Supply and Water Production ........................................................................ 83 SECTION 6: Threats to Water Supply ..................................................................................................................... 85 6.1 Threats to Local Groundwater Supply ................................................................................................... 85 6.1.1 Declining Water Levels ................................................................................................................... 85 6.1.2 Seawater Intrusion ......................................................................................................................... 85 6.2 Threats to State Water Project Supply .................................................................................................. 90 6.3 Threats to Lopez Lake Water Supply .................................................................................................... 90 SECTION 7: Management Activities ....................................................................................................................... 91 7.1 Strategic Plan ......................................................................................................................................... 91 7.1.1 Purpose and Background ............................................................................................................... 91 7.1.2 Mission Statement ......................................................................................................................... 91 7.1.3 Objectives of the NCMA TG ............................................................................................................ 91 7.1.4 Strategic Initiatives and Implementation Plan .............................................................................. 92 7.2 Management Objectives ........................................................................................................................ 92 7.2.1 Share Groundwater Resources and Manage Pumping ................................................................ 93 7.2.2 Enhance Management of NCMA Groundwater ............................................................................. 94 7.2.3 Monitor Supply and Demand and Share Information .................................................................. 95 7.2.4 Manage Groundwater Levels and Prevent Seawater Intrusion ................................................... 98 7.2.5 Protect Groundwater Quality ....................................................................................................... 100 7.2.6 Manage Cooperatively ................................................................................................................. 101 7.2.7 Encourage Water Conservation .................................................................................................. 102 7.2.8 Evaluate Alternative Sources of Supply ..................................................................................... 107 SECTION 8: References ....................................................................................................................................... 109 Tables Table 1. NCMA TG Representatives ...................................................................................................................... 10 Table 2. Lopez Lake (SLOFCWCD Zone 3 Contractors) Water Allocations (AFY) ................................................ 57 Table 3. Lopez Lake Municipal Diversion LRRP Reduction Strategy .................................................................. 58 Table 4. Lopez Lake Downstream Release LRRP Reduction Strategy ................................................................ 58 Table 5. Lopez Lake Deliveries, 2021 ................................................................................................................... 59 Table 6. NCMA SWP Deliveries, 2021 ................................................................................................................... 60 Table 7. NCMA Groundwater Entitlement and Production from Santa Maria Groundwater Basin, 2021 ....... 63 Table 8. Baseline (Full Entitlement) Available Urban Water Supplies (AFY) ....................................................... 64 Table 9. Available Urban Water Supply, 2021 ...................................................................................................... 65 Table 10. NCMA Crop Acreages and Calculated Evapotranspiration, 2021 ...................................................... 69 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. iii Table 11. Flow Terms Used in Root Zone Routing for IDC Model ....................................................................... 70 Table 12. IDC Model Results of Monthly Applied Water, 2021 ........................................................................... 73 Table 13. Estimated Rural Water Production, 2021 ............................................................................................ 75 Table 14. Historical Urban Water Production for Potable Use (Groundwater and Surface Water) ................... 76 Table 15. NCMA Groundwater Pumpage from Santa Maria Groundwater Basin, 2021 (AF) ............................ 77 Table 16. Historical Total Water Use (Groundwater and Surface Water, AF) ..................................................... 79 Table 17. Water Production by Source, 2021 (AF) ............................................................................................... 83 Figures Figure 1. Santa Maria Groundwater Basin ............................................................................................................. 8 Figure 2. Northern Cities Management Area .......................................................................................................... 9 Figure 3. Locations of Monitoring Wells ................................................................................................................ 14 Figure 4. Depths of Monitoring Wells .................................................................................................................... 15 Figure 5. Annual Precipitation 1950 to 2021 ...................................................................................................... 20 Figure 6. Location of Precipitation Stations .......................................................................................................... 21 Figure 7. Monthly and Average Precipitation and Evapotranspiration ................................................................ 22 Figure 8. Groundwater Elevation Contours Spring 2021 ..................................................................................... 28 Figure 9. Groundwater Elevation Contours Fall 2021 ......................................................................................... 29 Figure 10. Selected Hydrographs .......................................................................................................................... 31 Figure 11. Sentry Well Hydrographs ...................................................................................................................... 32 Figure 12. Hydrograph of Deep Well Index Elevation ........................................................................................... 35 Figure 13. Water Elevation, Conductivity, and Temperature, Well 24B03 ......................................................... 36 Figure 14. Water Elevation, Conductivity, and Temperature, Well 30F03 ......................................................... 37 Figure 15. Water Elevation, Conductivity, and Temperature, Well 30N02 ......................................................... 38 Figure 16. Water Elevation, Conductivity, and Temperature, Well 36L01 ......................................................... 39 Figure 17. Water Elevation, Conductivity, and Temperature, Well 30N02 ......................................................... 40 Figure 18. Water Elevation, Conductivity, and Temperature, Well 32C03 ......................................................... 41 Figure 19. Change in Groundwater Elevation, Deep Aquifer System, April 2020 to April 2021 ....................... 44 Figure 20. Change in Groundwater Elevation, Alluvial Aquifer, April 2020 to April 2021 ................................. 45 Figure 21. Chloride Concentrations in Monitoring Wells ..................................................................................... 48 Figure 22. Total Dissolved Solids Concentrations in Monitoring Wells ............................................................... 49 Figure 23. Piper Diagrams of Water Quality in Select Monitoring Wells (4-page figure, one for each quarter) ................................................................................................................................................................................. 52 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. iv Figure 24. Locations of Municipal Production Wells ............................................................................................ 62 Figure 25. NCMA Agricultural Land 2021 ............................................................................................................. 68 Figure 26. 2021 NCMA Estimated Agricultural Water Demand and Monthly Precipitation at the SLO No. 795 Gauge ...................................................................................................................................................................... 72 Figure 27. Municipal Water Use by Source ........................................................................................................... 78 Figure 28. Total Water Use (Urban, Rural, Agricultural) by Source ..................................................................... 80 Figure 29. Historical TDS, Chloride, and Sodium, Index Wells and 30N03 ........................................................ 87 Figure 30. Historical TDS, Chloride, and Sodium, Wells 30N02, MW-Blue, and 36L01 .................................... 88 Appendix Appendix A NCMA Sentry Well Water Level and Water Quality Data Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. v Abbreviations and Acronyms 2021 Annual Report Northern Cities Management Area 2021 Annual Monitoring Report AFY acre-feet per year Arroyo Grande City of Arroyo Grande ATF advanced treatment facility APW advanced purified water CIMIS California Irrigation Management Information System County San Luis Obispo County CSA County Service Area CUP Consumptive Use Program DDW Division of Drinking Water Delta Sacramento-San Joaquin Delta DRI Desert Research Institute DWR California Department of Water Resources ET evapotranspiration Grover Beach City of Grover Beach gpcd gallons per capita daily IDC 2015 Integrated Water Flow Model Demand Calculator ILRP Irrigated Lands Regulatory Program IRWMP Integrated Regional Water Management Plan IWFM 2015 Integrated Water Flow Model LRRP Low Reservoir Response Plan NAVD 88 North American Vertical Datum of 1988 NCMA Monitoring Program Monitoring Program for the Northern Cities Management Area NCMA Northern Cities Management Area Nipomo station Nipomo Station (No. 202) NMMA Nipomo Mesa Management Area NRCS Natural Resources Conservation Service Oceano CSD Oceano Community Services District OCSD Oceano Community Services District PE Professional Engineer PG&E Pacific Gas & Electric Pismo Beach City of Pismo Beach Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. vi RWFPS Recycled Water Facility Planning Study SGMA Sustainable Groundwater Management Act SLOFCWCD County of San Luis Obispo Flood Control and Water Conservation District SMGB Santa Maria River Valley Groundwater Basin SMGBMA Santa Maria Groundwater Basin Management Area SMVMA Santa Maria Valley Management Area SSLOCSD South San Luis Obispo County Sanitation District SWP California State Water Project SWRCB State Water Resources Control Board TDS total dissolved solids TG NCMA Technical Group TAG Technical Advisory Group UWMP Urban Water Management Plan WRAC Water Resources Advisory Committee WSCP Water Shortage Contingency Plan WWTP wastewater treatment plant Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 1 Executive Summary The 2021 Annual Monitoring Report for the Northern Cities Management Area (NCMA) (Annual Report) is prepared pursuant to the requirements of the 2005 Stipulation for the Santa Maria Groundwater Basin Adjudication (2005 Stipulation) and the January 25, 2008 Judgment After Trial (2008 Judgment). This 2021 Annual Report provides an assessment of hydrologic conditions for the NCMA based on data collected during the calendar year of record. As specified in the Judgment, the NCMA agencies, consisting of the City of Arroyo Grande, City of Grover Beach, City of Pismo Beach, and Oceano Community Services District (OCSD), regularly monitor groundwater in the NCMA and analyze other data pertinent to water supply and demand, including the following:  Land and water use in the Santa Maria River Valley Groundwater Basin (SMGB or basin)  Sources of supply to meet water demand  Groundwater conditions (including water levels and water quality)  Amount and disposition of NCMA water supplies that are not groundwater Results of the data compilation and analysis for calendar year 2021 are documented and discussed in this 2021 Annual Report. Groundwater Conditions During 2021, water elevations generally decreased slightly in the NCMA portion of the SMGB in response to below-average rainfall in 2021. The relatively minor decrease in water levels throughout most of the area, despite the below-average rainfall conditions, is less than would be expected given the recent rainfall patterns. That the impacts are not greater is attributed to ongoing efforts by all NCMA agencies to minimize groundwater extraction and maximize surface water supply sources while maintaining the water conservation practices and requirements brought on by the current drought. Groundwater Levels The greatest threat to the groundwater supply in the area is seawater intrusion. An indicator of whether the NCMA agencies and other stakeholders are successfully averting the threat of seawater intrusion is the groundwater elevation in the NCMA sentry wells near the coastline. The average water elevations of three sentry wells—24B03, 30F03, and 30N02–make up a Deep Well Index. This index was developed by the NCMA in 2007 to gauge the ability of the aquifer to withhold potential landward migration of seawater. A Deep Well Index value above 7.5 feet North American Vertical Datum 1988 (NAVD 88)1 generally indicates that sufficient freshwater flow occurs from the east to the coastline to prevent seawater intrusion. History has shown that a prolonged period in which the Deep Well Index level is below 7.5 feet develops groundwater conditions that pose a risk of seawater intrusion. The following are evaluations of groundwater levels through the seasons in calendar year 2021.  Spring 2021. In the mostly urbanized areas north of Arroyo Grande Creek, groundwater is extracted from the deep groundwater aquifers of the Paso Robles Formation and the Careaga Sand. The water elevation contours in the deep aquifer system in spring of 2021 generally showed a westerly to southwesterly 1 Note that NAVD 88 is 2.72 feet lower than mean sea level, as recorded at the Port San Luis tide station datum (available at https://tidesandcurrents.noaa.gov/datums.html?id=9412110); however, for the purposes of this report it will be referred to as sea level. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 2 groundwater flow (see Figure 8, on page 28). These groundwater flow gradients and positive (above mean sea level) groundwater elevations are developed and maintained primarily because the NCMA agencies have managed this portion of the basin through cooperative water management and conservation efforts. The proactive management of the basin and collaborative efforts by the agencies was necessary to respond to lower water levels in the Deep Well Index more than a decade ago. The combined NCMA efforts are to ensure that fresh groundwater flow to the ocean continues to create a barrier to seawater intrusion. April 2021 groundwater elevations in the deep aquifer system main production zone along the coast ranged from 7.0 to 9.0 feet above sea level. In the southernmost portion of the area, the groundwater elevations, flow, and gradient are less well known because there are only a limited number of wells and point sources of water level data. The groundwater gradient and flow in this area are generally inferred on the basis of historical records and trends as well as water level data from the Nipomo Mesa Management Area (NMMA) farther east.  The Cienega Valley is in the central area of the NCMA, generally south of Arroyo Grande Creek. All known groundwater pumping in this area is from the relatively shallow (less than 100 feet deep) alluvial aquifer. Agricultural groundwater production typically results in seasonal drawdown of the alluvial aquifer in the valley. Groundwater elevations in the alluvial aquifer in the Cienega Valley were in the range of below 0 feet to more than 30 feet above sea level in spring 2021. These data show a general decrease in alluvial groundwater elevations from April 2020 to April 2021. Spring 2021 alluvial groundwater elevations showed a subdued pumping trough in the Cienega Valley, with groundwater elevations generally below sea level in the center of the depression.  Fall 2021. Groundwater level contours for October 2021 are presented in Figure 9, on page 29. Groundwater elevations in the alluvial aquifer within the Cienega Valley in October 2021 were 1 to 14 feet lower than elevations at the start of the irrigation season in April 2021, which is a typical seasonal response to the irrigation season. These conditions are consistent with the pumping depressions observed historically during the fall in the Cienega Valley. The alluvial groundwater elevation in the pumping depression in October 2021, at 11.6 feet below sea level, was 2.8 feet higher than in October 2020. October 2021 groundwater elevations in the deep aquifer system main production zone along the coast ranged from 3.8 to 7.0 feet above sea level.  Deep Wells. In 2021, the Deep Well Index started the year above the 7.5-foot threshold value with an index number in January of more than 9 feet. It continued to rise, reached a high of nearly 10 feet during February, and then began to decline. The index value dropped below the 7.5-foot trigger value by July and continued to fall to a low point of just over 6 feet in late October. A slow recovery occurred through November, followed by a more rapid recovery in December, coincident with above average monthly rainfall received in December. The index value continued to rise throughout the end of the year and finished 2021 at about 9 feet above sea level.  NCMA/NMMA Boundary. The water elevation in the San Luis Obispo County monitoring well (Well 32C03), which was installed to monitor aquifer conditions along the NCMA/NMMA boundary, typically exhibits regular seasonal fluctuations. As in 2020, the water elevation in the well remained above sea level throughout all of 2021, in contrast to the 2013 through 2016 period when the water levels in the NCMA/NMMA boundary area typically dropped below sea level in August and remained at a low elevation until early October. Change in Groundwater in Storage The change in groundwater in storage in the NCMA portion of the SMGB between April 2020 and April 2021 is estimated by comparing water level contour maps created for these periods and calculating the volume change from April 2020 to April 2021. Separate estimates of change in groundwater in storage were computed for both the deep aquifer system and for the alluvial aquifer and then summed to represent the total NCMA Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 3 estimated change in groundwater in storage. Comparison of April water levels was chosen to comply with the California Department of Water Resources (DWR) reporting requirements under the Sustainable Groundwater Management Act (SGMA).2 A decrease of groundwater in storage is a reflection of a net decrease in water levels across the aquifer. During the period of April 2020 to April 2021, the NCMA portion of the SMGB experienced a net decrease of groundwater in storage. The net decrease in groundwater levels represented a decrease of groundwater in storage from April 2020 to April 2021 of approximately 1,400 acre-feet (AF); that is, there was approximately 1,400 AF less groundwater stored in the NCMA portion of the SMGB in April 2021 than in April 2020. Groundwater Quality Analytical results of key water quality data (chloride, total dissolved solids [TDS], and sodium) in 2021 were generally consistent with historical concentrations and observed ranges of constituent concentrations. In general, no water quality results were observed that are a cause of concern. None of the water quality results from monitoring events throughout 2021 indicate an incipient episode or immediate threat of seawater intrusion. Water quality degradation through incipient seawater intrusion occurred in 2009 with measured elevated concentrations of TDS, sodium, and chloride in wells 30N02, 30N03, and MW-Blue, all of which are screened in the Paso Robles Formation. No indications of seawater intrusion have been observed in wells screened in the underlying Careaga Sand. Once TDS, sodium, and chloride concentrations declined in the sentry well groundwater following the 2009–2010 season, the location of the seawater-freshwater interface was unknown, although the interface apparently is and has remained at some distance offshore since the 2009–2010 season. Water Supply and Production/Deliveries  Total water use in the NCMA in 2021 (including urban use by the NCMA agencies plus agricultural irrigation and private pumping by rural water users) was 8,658 AF. Of this amount, Lopez Lake deliveries were 3,522 AF, California State Water Project deliveries totaled 1,772 AF, and groundwater pumping from the NCMA portion of the SMGB accounted for approximately 3,344 AF. The City of Arroyo Grande produced 20 AF from its Pismo Formation wells, outside the SMGB, in 2021. The breakdown is shown in Table ES- 1 (following page).  Urban water use in 2021 among the NCMA agencies was 6,073 AF, a slight increase from 2020. Urban water use in the past 20 years has ranged from 5,476 AF (2016) to 8,982 AF (2007). There has been an overall decline in urban production since 2007, although there have been slight increases since the low point in 2016. The decline in pumpage since 2013 was in direct response to a statewide order by the governor to reduce the amount of water used in urban areas by 20 percent. That goal was achieved locally by conservation activities implemented by the NCMA agencies, and the relatively low urban water has been maintained since then. 2 On September 16, 2014, Governor Jerry Brown signed into law a three-bill legislative package, composed of Assembly Bill 1739 (Dickinson), Senate Bill (SB) 1168 (Pavley), and SB 1319 (Pavley), collectively known as the Sustainable Groundwater Management Act (SGMA). Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 4  Agricultural acreage in the NCMA portion of the SMGB has remained relatively constant for more than 20 years. Thus, the annual applied water requirement for agricultural irrigation has been relatively stable, although it varies with weather conditions. Acknowledging the variability resulting from weather conditions, agricultural applied water is not expected to change significantly given the relative stability of applied irrigation acreage and cropping patterns in the NCMA. Changes in rural domestic pumping have not been significant. Table ES- 1. Water Production by Source (AF), 2021 Agency Lopez Lake State Water Project SMGB Groundwater Other Supplies1 Total Urban Area Arroyo Grande 2,158 0 129 20 2,307 Grover Beach 795 0 482 0 1,277 Pismo Beach 406 1,302 63 0 1,771 Oceano CSD 163 470 85 0 718 Urban Water Use Total 3,522 1,772 759 20 6,073 Non-Urban Area Agricultural Irrigation Applied Water 0 0 2,457 0 2,457 Rural Water Users 0 0 82 0 82 Non-potable Irrigation by Arroyo Grande 0 0 46 0 46 Total 3,522 1,772 3,344 20 8,658 Notes 1 Other Supplies includes groundwater pumped from outside the NCMA boundaries. AF = acre-feet CSD = Community Services District SMGB = Santa Maria Groundwater Basin Threats to Water Supply  Total groundwater pumping (urban, agriculture, and rural domestic) from the SMGB in the NCMA was 3,344 AF in 2021, which is 35 percent of the court-accepted3 9,500 acre-feet per year (AFY) long-term safe yield of the NCMA portion of the SMGB.  When pumping is less than the safe yield of an aquifer, groundwater in storage should generally increase and result in rising groundwater levels. As such, groundwater elevations throughout the NCMA portion of the SMGB should rise significantly if several consecutive years of groundwater pumping occurs at 30 to 40 percent of the safe yield, which has been the case in the NCMA for the past decade. However, as illustrated by the decline in groundwater levels during 2021, the data show that the aquifer is still in a 3 The calculated, consensus safe yield value of 9,500 AFY for the NCMA portion of the SMGB was included in the 2002 Settlement Agreement through affirmation of the 2001 Groundwater Management Agreement among the NCMA agencies, which is described in more detail in Section 1.1 of this report. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 5 tenuous position with respect to the threat of seawater intrusion. The fragile health of the aquifer is illustrated by water elevations at just a few feet above sea level, coupled with the formation of a pumping depression in the alluvial aquifer within the Cienega Valley just west of the NCMA/NMMA boundary. According to the DWR Bulletin 63-3 report, both the Paso Robles Formation aquifer and the lower confined portion of the Cienega Valley alluvial aquifer are recharged primarily from subsurface groundwater inflow from the east, where the overlying confining layers are thin to non-existent (DWR, 1970). These recharge areas to the east include inland reaches of Arroyo Grande Valley and portions of Nipomo Mesa (DWR, 1970). The data indicate that the aquifer has little ability to withstand future droughts. Any increase in regional pumping, or any other changes that reduce recharge from the east will leave the NCMA with a serious groundwater deficit that threatens seawater intrusion.  Historically, groundwater flowed from higher elevations inland westward towards the ocean, thereby acting to prevent seawater intrusion. In recent years, the well-documented pumping depression4 in the deep aquifer system near Black Lake Canyon within the NMMA appears to have reversed the groundwater gradient. The apparent development of a landward gradient in the southern portion of the NCMA, because of the pumping depression in the NMMA, likely reduces the historical recharge volume of subsurface inflow into the NCMA from Nipomo Mesa. This reduction of subsurface inflow to the NCMA creates conditions more likely to result in seawater intrusion in the NCMA and NMMA.  During 2021, there were no indications of seawater intrusion but any increase of groundwater pumping or decrease in rainfall may quickly result in a greater risk of seawater intrusion. 4 As documented in NMMA annual reports, available at https://ncsd.ca.gov/resources/reports-by-subject. (Accessed March 9, 2021.) Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 6 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 7 SECTION 1: Introduction This Northern Cities Management Area 2021 Annual Monitoring Report (2021 Annual Report or Annual Report) summarizes hydrologic conditions for calendar year 2021 in the Northern Cities Management Area (NCMA) of the Santa Maria River Valley Groundwater Basin (SMGB or the basin) in San Luis Obispo County (County), California (Figure 1, on page 8). This report was prepared on behalf of four public agencies collectively referred to as the Northern Cities, which include the City of Arroyo Grande (Arroyo Grande), City of Grover Beach (Grover Beach), City of Pismo Beach (Pismo Beach), and the Oceano Community Services District (OCSD; Oceano CSD)5,6 (Figure 2, on page 9). These agencies, along with local landowners, the County, and the County of San Luis Obispo Flood Control and Water Conservation District (SLOFCWCD) have managed local surface water and groundwater resources since the late 1970s to preserve the long-term integrity of water supplies. 1.1 History of Litigation The rights to pump groundwater from the SMGB have been in litigation (adjudication) since the late 1990s. The physical solution set forth in the 2005 Stipulation for the Santa Maria Groundwater Basin Adjudication (2005 Stipulation) and the January 25, 2008, Judgment After Trial (2008 Judgment)7 established requirements and goals for the management of the entire SMGB. The Superior Court of California, County of Santa Clara (Court) established three separate management areas, including the NCMA, the Nipomo Mesa Management Area (NMMA), and the Santa Maria Valley Management Area (SMVMA). The Court mandated that each management area form a technical group to monitor the groundwater conditions of its area, to continuously assess the hydrologic conditions of each area, and to prepare an annual report each year to provide the Court with a summary of the previous year’s conditions, actions, and threats. The requirements for the annual report, as directed by the Court in the 2005 Stipulation (June 30, 2005, version, paragraph IV.D.3), are as follows: Within one hundred and twenty days after each Year end, the Management Area Engineers will file an Annual Report with the Court. The Annual Report will summarize the results of the Monitoring Program, changes in groundwater supplies, and any threats to Groundwater supplies. The Annual Report shall also include a tabulation of Management Area water use, including Imported Water availability and use, Return Flow entitlement and use, other Developed Water availability and use, and Groundwater use. Any Stipulating Party may object to the Monitoring Program, the reported results, or the Annual Report by motion. This 2021 Annual Report satisfies the requirements of the Court. The annual report for each calendar year (January 1 to December 31) is submitted to the Court by April 30 of the following calendar year, pursuant to the 2005 Stipulation. As a result of legislation passed by the State of California related to the Sustainable Groundwater Management Act (SGMA) that requires submittal of annual reports and supporting information and data for each adjudicated groundwater basin by April 1 of each year, the 2021 Annual Report is also published to the California Department of Water Resources (DWR) adjudicated basin reporting website.8 5 Each agency may also be individually referred to as an NCMA agency. 6 Portions of Arroyo Grande and Pismo Beach extend outside the NCMA. 7 Santa Maria Valley Water Conservation District v. City of Santa Maria, et al., Case #1-97-CV-770214 Filing #G-79046. (Cal., 2015). 8 The link to the reporting system is available on this DWR page: https://water.ca.gov/Programs/Groundwater- Management/SGMA-Groundwater-Management/Adjudicated-Areas. SantaMariaGuadalupe Nipomo ArroyoGrandeGroverBeach PismoBeach Orcutt NorthernCitiesManagementArea San L u i s O b i s p o C o u n t y Sant a B a r b a r a C o u n t y £¤101 Nipomo MesaManagementArea Santa MariaValleyManagement Area Date: January 28, 2020 Data Sources: LEGENDNorthern Cities Management AreaNipomo Mesa Management AreaSanta Maria Valley Management AreaSanta Maria Groundwater Basin (DWR 2019)County Borders Santa Maria Groundwater Basin FIGURE 1 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\006_2019_Annual_Report\Annual_Report\Figure01_Santa_Maria_Groundwater_Basin.mxd o 0 1 2 3 4 5 Miles PacificOcean 8 GroverBeach ArroyoGrande Oceano PismoBeach £¤101 Sant a M a r i a R i v e r F a u l tPismoCreekArroyoGrandeCreekMeadowCreek L o s B erros Creek Oc e a n o F a u l t Wilmar A v e n u e F a u l t Date: February 26, 2020 Data Sources: LEGENDNorthern Cities Management AreaNipomo Mesa Management AreaSanta Maria Groundwater Basin (DWR 2019)FaultsStreams Northern Cities Management Area FIGURE 2 San Luis Obispo County, California Document Path: Y:\_nonGISP\0672_Northern_Cities_Management_Area\Source_Figures\006_2019_Annual_Report\Annual_Report\Figure02_Northern_Cities_ManagementArea.mxd o 0 1 Miles PacificOcean 9 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 10 The collaborative water supply management approach of the NCMA agencies was recognized by the Court in the 2001 Groundwater Management Agreement (which was based on the 1983 Gentlemen’s Agreement), formalized in the Settlement Agreement Between Northern Cities, Northern Cities Landowners, and Other Parties (2002 Settlement Agreement or Settlement Agreement) and incorporated in the 2005 Stipulation. On June 30, 2005, the 2005 Stipulation, which included the 2002 Settlement Agreement, was agreed upon by numerous parties, including the NCMA agencies. The approach then was adopted by the Court in its 2008 Judgment. Although appeals to that decision were filed, a subsequent decision by the Sixth Appellate District (filed November 21, 2012) upheld the Judgment. On February 13, 2013, the Supreme Court of California denied a petition to review the decision. Pursuant to the Court’s continuing jurisdiction, Arroyo Grande, Pismo Beach, and Grover Beach filed a motion on September 29, 2015, requesting that the Court impose moratoriums on certain water extraction and use by stipulating parties within the NMMA. Judge Kirwan denied the motion without prejudice. He did, however, order the parties to meet and confer to address the issues raised in the motion. The meet and confer process continued throughout 2021 through continuation of the case management conference process and a motion to appoint a technical advisor to the Court, which resulted in Court selection of a technical advisor. The order by the Court precipitated a series of meetings and collaborative actions between the NCMA and NMMA agencies, including the tentative formation of a Seawater Intrusion Working Group (now inactive) to discuss the threat and potential solutions for possible seawater intrusion. 1.2 Description of the NCMA Technical Group Pursuant to a requirement in the 2005 Stipulation, the NCMA Technical Group (TG) was formed (Paragraph IV.C and Paragraph VII). The TG is composed of representatives of each of the NCMA agencies, as listed in Table 1. Table 1. NCMA TG Representatives Agency Representative City of Arroyo Grande Bill Robeson Public Works Director Shane Taylor Utilities Manager City of Grover Beach Gregory A. Ray, PE Director of Public Works/City Engineer R.J. (Jim) Garing, PE Consulting City Engineer for Water and Sewer City of Pismo Beach Benjamin A. Fine, PE Director of Public Works/City Engineer Oceano CSD Will Clemens General Manager Tony Marracino Utility Systems Supervisor Notes CSD = Community Services District PE = Professional Engineer Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 11 The NCMA TG contracts with Water Systems Consulting, Inc. (WSC), to serve as staff extension to assist the TG in its roles and responsibilities in managing the water supply resources. The TG also contracts with GSI Water Solutions, Inc., and its subconsulting partner, GEI Consultants, Inc., to conduct the quarterly groundwater monitoring and sampling tasks, evaluate water demand and available supply, identify threats to water supply, and assist the TG in preparation of the annual report. 1.3 NCMA TG Mission Statement The NCMA TG developed the following mission statement to help guide ongoing initiatives and to capture the requirements outlined in the 2002 Groundwater Management Agreement, 2002 Settlement Agreement, 2005 Stipulation, and 2008 Judgment: Preserve and enhance the sustainability of water supplies for the Northern Cities Area by:  Enhancing supply reliability  Protecting water quality  Maintaining cost-effective water supplies  Advancing the legacy of cooperative water resources management  Promoting conjunctive use 1.4 Coordination with Management Areas Since 1983, management of the NCMA has been based on cooperative efforts of the four NCMA agencies in continuing collaboration with the County, SLOFCWCD, and other local and state agencies. Specifically, the NCMA agencies have jointly monitored and managed their groundwater production and, in cooperation with the SLOFCWCD, invested in surface water supplies to reduce dependence on groundwater pumping and protect the groundwater resource. In addition to the efforts discussed in this 2021 Annual Report, cooperative management occurs through many means, including communication by the NCMA agencies in their respective public meetings, participation in the SLOFCWCD Zone 39 Advisory Committee (related to the management and operation of Lopez Lake, which is described further in Section 4.1.1), and participation in the Water Resources Advisory Council (WRAC, the County-wide advisory panel on water issues). The NCMA agencies are active participants in current and ongoing integrated regional water management efforts and participated in preparation and adoption of the 2014 update of the San Luis Obispo County Integrated Regional Water Management Plan (IRWMP). The IRWMP promotes integrated regional water management to ensure sustainable water uses, reliable water supplies, better water quality, environmental stewardship, efficient urban development, protection of agriculture, and a strong economy. Since the 2008 Judgment, the NCMA TG has taken the lead in cooperative management of its management area. The NCMA TG has met monthly (at a minimum) for many years and continued to do so throughout 2021. Based on the threat of COVID-19,10 as reflected in the Proclamations of Emergency issued by the Governor of the State of California, all TG meetings after March 17, 2020, were conducted as a phone-in/web-based format. The TG also participates in the Santa Maria Groundwater Basin Management Area (SMGBMA) technical subcommittee, formed in 2009; however, no meetings of the SMGBMA were held in 2021. The purpose of the SMGBMA technical subcommittee is to coordinate efforts among the three management areas (NCMA, NMMA, SMVMA) such as sharing data throughout the year and during preparation of the annual report, 9 Flood Control Zone 3 (Lopez Project) is operated by SLOFCWCD to operate Lopez Reservoir for municipal and agricultural water supplies. It was established to operate the Lopez water supply system and is a wholesale supplier. The contractors in Zone 3 include the communities of Oceano, Grover Beach, Pismo Beach, Arroyo Grande, and County Service Area 12 (including the Avila Beach area). 10 The abbreviation for coronavirus disease 2019. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 12 reviewing and commenting on technical work efforts of other management areas, standardizing monitoring protocols, considering projects and grant opportunities of joint interest and benefit, and sharing information and data among the managers of the three management areas. The outcomes of the motion that Arroyo Grande, Pismo Beach, and Grover Beach filed on September 29, 2015 (see Section 1.1), include increased discussion and collaboration between the NCMA and NMMA. One of the initiatives was the formation of an NCMA-NMMA Management Coordination Committee that has met several times since 2018 to discuss items of mutual concern and develop strategies for addressing the concerns. Another area of increased mutual collaboration between the NCMA and NMMA was the formation in 2016 of a technical team to collaboratively develop a single data set of water level data points as part of preparing a consistent set of semiannual water level contour maps for the NCMA and NMMA. Those efforts continued into and throughout 2021 and resulted in the development of consistent water level contouring (and enhanced understanding of groundwater conditions) throughout the NCMA and NMMA. 1.5 Development of Monitoring Program The 2008 Judgment orders the stipulating parties to comply with all terms of the 2005 Stipulation. As specified in the Judgment and as outlined in the Monitoring Program for the Northern Cities Management Area (Todd Groundwater, Inc. [Todd], 2008) (NCMA Monitoring Program), the NCMA agencies are to conduct groundwater monitoring of wells in the NCMA. In accordance with requirements of the Judgment, the NCMA agencies collect and analyze data pertinent to water supply and demand, including the following:  Land and water use in the NCMA portion of the SMGB  Sources of supply to meet those uses  Groundwater conditions (including water levels and water quality)  Amount and disposition of other sources of water supply in the NCMA The NCMA Monitoring Program requires that the NCMA agencies gather and compile pertinent information on a calendar-year basis; this is accomplished through data collected by NCMA agencies (including necessary field work), the SLOFCWCD, and by other public agencies. Periodic reports, such as Urban Water Management Plans (UWMPs) prepared by Arroyo Grande, Grover Beach, and Pismo Beach, provide information about demand, supply, and water supply facilities. Annual data are added to the comprehensive NCMA database and analyzed. Results of the data compilation and analysis for 2021 are documented and discussed in this 2021 Annual Report. As shown in Figure 1, on page 8, the NCMA represents the northernmost portion of the SMGB as defined in the 2005 Stipulation. Adjoining the NCMA to the south and east is the NMMA; the SMVMA encompasses the remainder of the SMGB. Figure 2, on page 9, shows the locations of the four NCMA agencies in the NCMA. 1.6 Groundwater Monitoring Network The NCMA Monitoring Program includes (1) compilation of groundwater elevation data from the County, (2) water quality and groundwater elevation monitoring data from the network of sentry and monitoring wells in the NCMA, and (3) groundwater elevation data from municipal pumping wells. Analysis of these data is summarized below in accordance with the NCMA Monitoring Program (Todd, 2008) and as modified as additional well data and data sources have become available over the years. Approximately 150 wells within the NCMA were monitored for water levels by the County at some time during the past few decades. The County currently monitors the water level in 50 wells within the NCMA on a semiannual basis in April and October. The County monitoring program includes four sentry well clusters Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 13 (piezometers) along the coast, a four-well cluster in Oceano, and County Monitoring Well No. 3 (12N/35W- 32C03) (County Monitoring Well No. 3 [32C03]) located on the eastern NCMA boundary between the NCMA and NMMA (Figure 3, on page 14). The County monitors more than 125 additional wells in the NMMA portion of the SMGB within the County. Beginning in 2009, the NCMA agencies initiated a quarterly sentry well monitoring program to supplement the County’s semiannual schedule. To monitor overall changes in groundwater conditions, representative wells within the NCMA were selected for preparation of hydrographs and evaluation of water level changes. Wells were selected based on the following criteria:  The wells must be part of the County’s current monitoring program or part of a public agency’s regular monitoring program.  Detailed location information must be available.  Construction details of the wells must be available.  The locations of the wells should have a wide geographic distribution.  The historical record of water level data must be long and relatively complete. Many of the wells that have been used in the program are production wells that were not designed for monitoring purposes (i.e., the wells are screened across various production zones). Moreover, many of the wells are active production wells or are located near active wells and are therefore potentially subject to localized pumping effects that result in measurements that are lower than the regionally representative water level. These effects are not always apparent at the time of measurement and data cannot easily be identified as representing static groundwater levels in specific zones (e.g., unconfined or deep confined to semi- confined). Therefore, data should be considered as a whole in developing a general representation of groundwater conditions. The “sentry” wells (32S/12E-24Bxx, 32S/13E-30Fxx, 32S/13E-30Nxx, and 12N/36W-36Lxx) are a critical element of the groundwater monitoring network and are designed to provide an early warning system to identify potential seawater intrusion in the aquifer (Figure 3, on page 14). Each sentry well consists of a cluster of multiple wells that allows for the measurement of groundwater elevation and quality from discrete depths. Also shown in Figure 3, on page 14, is the OCSD observation well cluster, a dedicated monitoring well cluster located just seaward of OCSD production well 8, and County Monitoring Well No. 3 (32C03). Figure 4, on page 15, shows the depth and well names of the sentry well clusters, the OCSD observation well cluster, and County Monitoring Well No. 3 (32C03). Traditionally, the wells were divided into three basic depth categories including shallow, intermediate, and deep to describe the relative depths of each monitoring well within the cluster. The basic depth categories do not necessarily describe the geologic unit and relative depth of the unit that the screened portion of the well monitors. It is important, however, to recognize and identify the geologic unit that each well monitors. The water level responses and water quality changes are quite different in wells that monitor the shallow alluvial unit (24B01, 30F01, and 30N01), the Paso Robles Formation (24B02, 30F02, 30N02, 30N03, 36L01, OCSD MW-Green, OCSD MW-Blue, and 32C03), and the deeper Careaga Sand (24B03, 30F03, 36L02, OCSD MW- Silver, and OCSD MW-Yellow). The significance of this level of differentiation will be studied more extensively in the future. !> !> !> !> !> !> !> County MW#3Well 12N/35W32C03 North Beach CampgroundWells 32S/12E-24B01, 02, 03 Highway 1Wells 32S/13E-30F01, 02, 03 Pier Avenue32S/13E-30N01, 02, 03 Oceano CSDObservation Wells(Green, Blue, Silver, and Yellow) Oceano DunesWells 12N/36W-36L01, 02 OceanoWellNo. 8 £¤101 Sant a M a r i a R i v e r F a u l tPismoCreek A rroyoG ra nd e C re ekMeadow C reek L o s B erros Creek Oc e a n o F a u l t Wilmar A v e n u e F a u l t Date: February 26, 2020 Data Sources: LEGEND !>NCMA Monitoring WellsNorthern Cities Management AreaFaultsStreams Locations of Monitoring Wells FIGURE 3 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\_nonGISP\0672_Northern_Cities_Management_Area\Source_Figures\006_2019_Annual_Report\Annual_Report\Figure03_NCMA_Monitoring_Wells.mxd o 0 1 Miles PacificOcean 14 FIGURE 4. DEPTHS OF MONITORING WELLS Northern Cities Management Area San Luis Obispo County, California P:\Portland\672-Northern Cities Management Area\005-2018 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 7 NCMA Depths of Monitoring Wells.grf -700 -600 -500 -400 -300 -200 -100 0 Elevation, feet NAVD88XD1.7 XD2.7 XD3.5 XD4.4 XD4.6 XD6.5 Well Well Screen Transducer North Beach Campground 24B 01 02 03 Highway 1 30F 01 02 03 Pier Avenue 30N 01 02 03 Oceano Dunes 36L 01 02 OCSD Green Blue Silver Yellow 31H H10 H11 H12 H13 County MW#3 32C03 XD Notes: NAVD88 - North American Vertical Datum of 1988 OCSD - Oceano Community Services District 15 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 16 Since the sentry well monitoring program began in 2009, 52 monitoring events have been conducted. These monitoring events include collection of synoptic groundwater elevation data and water quality samples for laboratory analysis. 1.7 Recent and Ongoing Strategic Initiatives 1.7.1 Strategic Plan An NCMA Strategic Plan (Strategic Plan) was first developed in 2014 to provide the NCMA TG with a mission statement to guide future initiatives, provide a framework for identifying and communicating water resource planning goals and objectives, and formalize a 10-year work plan for implementation of those efforts. Several key objectives were identified related to enhancing water supply reliability, improving water resource management, and increasing effective public outreach. Implementation of these efforts continued throughout 2021. Work began in 2019 to update the 2014 Strategic Plan, which was developed over a series of strategic planning sessions and NCMA TG meetings and culminated with the publication of the Strategic Plan for the NCMA TG in March 2020. Several key strategies were identified by the TG for improving the sustainability of the water resource. Strategic initiatives were then developed for each key strategy. The TG then developed an implementation plan for the key strategies that includes current, short-term, and long-term time frames for initiatives that could be completed within 1 year, 5 years, and more than 5 years. A more detailed description of the Strategic Plan is provided in Section 7.1. 1.7.2 Central Coast Blue Central Coast Blue is a regional recycled water project with partner agencies consisting of Arroyo Grande, Grover Beach and Pismo Beach, with Pismo Beach serving as the lead agency. The OCSD and South San Luis Obispo County Sanitation District (SSLOCSD) are not participating in Phase I of the project, however both agencies have expressed support of the project and are cooperating with the partner agencies. The project is in the design phase and will develop a sustainable, drought resilient water supply and help protect the SMGB. The project consists of advanced treatment of effluent from the Pismo Beach wastewater treatment plant (WWTP) in Phase I and the South San Luis Obispo County Sanitation District (SSLOCSD) WWTP in Phase II (should it be deemed feasible and necessary) and injection of the purified water into the SMGB to reduce the risk of seawater intrusion and improve water supply sustainability for the region. Currently the water from both wastewater treatment plants is being treated and discharged to the ocean. Central Coast Blue will provide an opportunity to capture this lost water and use it to recharge the SMGB to create a drought-proof, sustainable water supply for the community by not only increasing the volume accessible in the aquifer but by also creating a barrier to prevent landward migration of seawater. Tasks related to the development of the project that were performed prior to and throughout 2021 include preliminary design, pilot plant operation and data collection, test injection well and monitoring well siting, construction, and testing, funding pursuits appropriation, cost/benefit sharing analysis, supplemental geophysics investigation, additional groundwater modeling with the Phase 1C model (see Section 1.7.3), and environmental review. The intent of Central Coast Blue is to enable the partnering NCMA agencies to construct an advanced treatment facility (ATF) to produce advanced purified water (APW) to augment its water supply through injection to recharge the aquifer and develop a seawater intrusion barrier to improve water supply reliability for the area. In addition to the ATF—which will include microfiltration/ultrafiltration, reverse osmosis, and ultraviolet Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 17 disinfection with advanced oxidation treatment processes—the project will include construction of conveyance pipelines as well as injection and monitoring wells to inject and monitor the APW in the groundwater basin. 1.7.3 Phase 1 Groundwater Model As part of Central Coast Blue planning and technical studies, a localized groundwater flow model (the Phase 1A model) was developed for the northern portion of the NCMA. The Phase 1A model evaluated the concept of injecting APW into the SMGB to increase aquifer recharge, improve water supply reliability, and help prevent future occurrences of seawater intrusion (CHG, 2017). Based on the results of the Phase 1A model and through funding by the SSLOCSD Supplemental Environmental Program, work was initiated in 2017 and continued through 2020 for development of the Phase 1B groundwater flow model (Geoscience Support Services, 2019). The domain of the Phase 1B model covers the entire NCMA, NMMA, and the portion of the SMVMA north of the Santa Maria River. The purpose of the Phase 1B model was to expand the Phase 1A model and use the expanded model to evaluate a series of groundwater injection and extraction scenarios to further support Central Coast Blue. The Phase 1B model has been used to (1) more completely understand the groundwater conditions of the NCMA portion of the SMGB, (2) understand the groundwater flow dynamics and components of the groundwater water balance of the aquifer, (3) identify the locations of the proposed injection wells, (4) quantify the amount of water that can be injected, (5) evaluate strategies for preventing seawater intrusion, and (6) develop estimates of the overall yield that the Central Coast Blue stakeholders will be able to receive from the project. The Phase 1C Groundwater Model was developed in 2021, incorporating findings from the airborne electromagnetic survey (see Section 1.7.4) and from the constructed test injection well to provide information on the initial conditions for seawater intrusion within the model (Geoscience Support Services, 2021). Previous assumptions for the location of the seawater-freshwater interface in the nearshore and offshore portions of the aquifer were based on limited information from historical onshore water quality results (see Section 3.3). The airborne electromagnetic survey provides a three-dimensional distribution model of salinity, or total dissolved solids (TDS), in the subsurface along the coast. This three-dimensional salinity model was used to estimate initial TDS concentrations in each model layer, including an estimation of the location of the seawater-freshwater interface (i.e., TDS concentration of 10,000 mg/L). The Phase 1C model is a refinement of the Phase 1B model. It has been used to gain an improved understanding of potential seawater intrusion under various predictive groundwater pumping and Central Coast Blue operation scenarios. 1.7.4 Airborne Electromagnetic Survey In 2020, the City of Pismo Beach, through funding from the Proposition 1 Planning Grant Activities, contracted with Ramboll US Consulting, Inc., and SkyTEM Surveys to conduct airborne electromagnetic survey of a large portion of the NCMA portion of the SMGB utilizing the airborne electromagnetic method (AEM). The goal of the study is to acquire survey data to characterize and map subsurface geologic structures, define the variability of the resistivities found in the coastal zone, and gain an understanding of the offshore interface between the fresh and saline groundwater. The SkyTEM airborne survey was flown in March 2020. Throughout 2020 and 2021, the acquired data were compiled and analyzed. The final report, which summarizes the airborne survey results and provides interpretation of the data, was delivered in January 2022 (Ramboll, 2022). The results of the study have generally enhanced understanding of groundwater flow within the SMGB and have been integral to the refinements incorporated into the Phase 1C Groundwater Model (see Section 1.7.3). Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 18 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 19 SECTION 2: Basin Setting 2.1 Setting The Tri-Cities Mesa11 in the northern portion of the NCMA is predominantly urban (residential/commercial). The Cienega Valley, a low-lying coastal stream and valley regime, is the area south of Arroyo Grande Creek in the central part of the area and is predominantly agricultural. The southern and southwestern portions of the area are composed of beach dunes and small lakes primarily managed by California Department of Parks and Recreation as a recreational area and a sensitive species habitat. 2.2 Precipitation Each year, climatological and hydrologic (stream flow) data for the NCMA are added to the NCMA database. Annual precipitation from 1950 to 2021 is presented in Figure 5, on page 20. Historical rainfall data are compiled on a monthly basis for the following two stations:12 DWR California Irrigation Management Information System (CIMIS) Nipomo Station (No. 202) (Nipomo station) for 2006 to present San Luis Obispo County-operated rain gauge (No. SLO 795) in Oceano for 2000 to present The locations of the two stations are shown in Figure 6, on page 21. In recent years, it was noted that the CIMIS Nipomo station may have been recording irrigation overspray as precipitation and the precipitation data from the station may not be reliable. However, the evapotranspiration data are still considered reliable. For this reason and because the DRI station was discontinued in 2017, the County-operated gauge (No. SLO 795) is the sole source of precipitation data used in this 2021 Annual Report. Figure 5, on page 20, is a composite graph combining data from the DRI and County stations and illustrating annual rainfall totals from available data from 1950 through 2021 (on a calendar-year basis). Average annual rainfall for the NCMA is approximately 15.6 inches. Monthly rainfall and evapotranspiration (ET) for 2021 as well as average monthly historical rainfall and ET are presented in Figure 7, on page 22. During 2021, below-average rainfall occurred for 9 months and above- average rainfall occurred during the other 3 months. The total for the year was 13.2 inches, more than 2 inches below the average annual rainfall for the area. Figure 5, on page 20, illustrates annual rainfall and shows several multi-year drought cycles (e.g., 6 years, 1984 through 1990) followed by cycles of above-average rainfall (e.g., 7 years, 1991 through 1998). Except for 2010, the period 2007 through 2015 (8 years) experienced below-average annual rainfall indicating a dry hydrologic period. This pattern continued into late 2016, when the hydrologic pattern appeared to have broken the serious drought that the area (and state) had experienced for the previous 5 years. Annual rainfall totals since 2016 have shown normal fluctuations between wet and dry years, as illustrated in Figure 5, on page 20. 11 Tri-Cities Mesa is an upland physiographic feature covering approximately four square miles. It is a remnant of the deposition that was laid down, historically, by Pismo and Arroyo Grande Creeks. Older sand dunes now cover the area (DWR, 1970). 12 The Desert Research Institute (DRI) Western Regional Climate Center Pismo Station (Coop ID: 046943) was discontinued in August of 2017. FIGURE 5. ANNUAL PRECIPITATION 1950 TO 2021 Northern Cities Management Area San Luis Obispo County, California P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 5 NCMA Precip 1950 - present Shaded.grf19501955196019651970197519801985199019952000 2005201020152020Calendar Year -20 -10 0 10 20 30 40 50 60 70 Cumulative Departure from Average, Inches0 10 20 30 40 50 Annual Precipitation, InchesD ro u g ht D ro u g ht Average Precipitation 1950-2021: 15.6 Inches Wet PeriodAlternating Wet and Dry Years Wet PeriodNormal 20 &< &< &< ·|}þ1 ·|}þ1 Pismo Beach(DRI 046943 - DiscontinuedAugust 2017) Oceano(SLO 795) Nipomo(CIMIS 202) £¤101 Date: January 16, 2019 LEGEND &<Active Weather Station &<Inactive Weather Station Nipomo Mesa Management Area Northern Cities Management Area Santa Maria Valley Management Area Location of Precipitation Stations FIGURE 6 Northern Cities Management Area San Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\005_2018_Annual_Report\Figure_4_NCMA_Precipitation_Station_Locations.mxd o 0 1 Miles PacificOcean 21 FIGURE 7. MONTHLY AND AVERAGE PRECIPITATION AND EVAPOTRANSPIRATION Northern Cities Management Area San Luis Obispo County, California 22 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 23 2.3 Evapotranspiration CIMIS maintains weather stations in locations throughout the state to provide real-time wind speed, humidity, and evapotranspiration data. The nearest CIMIS station to the NCMA is the Nipomo station (see Figure 6, on page 21). The Nipomo station has gathered data since 2006. While this station may have been subject to irrigation overspray in recent years (noted in Section 2.2, Precipitation, above), the apparent irrigation overspray does not have a significant impact on the measurements used for calculating ET. The monthly ET data for the Nipomo station is shown in Figure 7, on page 22, for 2021 and average conditions (over 10 years). The ET rate affects recharge potential of rainfall and the amount of outdoor water use (irrigation). 2.4 Geology and Hydrogeology The current understanding of the geologic framework and hydrogeologic setting is based on numerous previous investigations, particularly Woodring and Bramlette (1950), Worts (1951), Miller and Evenson (1966), DWR (1970, 1979, and 2002), Fugro (2015), Geoscience Support Services (2019 and 2021), and Ramboll (2022). The NCMA overlies the northwest portion of the SMGB. There are two principal aquifers in the NCMA portion of the SMGB. Groundwater pumped from the sedimentary deposits that make up the main municipal production aquifer underlying the NCMA is derived from the Paso Robles Formation13 and the underlying Careaga Sand.14 The Paso Robles Formation and Careaga Sand aquifers together are referred to as the deep aquifer system in this report. All municipal pumping in the NCMA occurs on the Tri-Cities Mesa and is produced from the deep aquifer. The second principal aquifer is the alluvial aquifer, consisting of Quaternary-age alluvial sediments of Arroyo Grande Creek, Los Berros Creek, and the Cienega Valley. All agricultural groundwater production in the Cienega Valley is presumed to be extracted from a lower, confined to semi-confined portion of the alluvial aquifer (DWR, 1970). Several faults either cross or form the boundary of the NCMA, as identified by DWR (2002), Pacific Gas & Electric (PG&E, 2014) (PG&E), and others. The Oceano Fault (USGS, 2006) trends northwest-southeast across the central portion of NCMA and has been extensively studied by PG&E (2014). Offshore, the Oceano Fault connects with the Hosgri and Shoreline fault systems several miles west of the coast. Onshore, the Oceano Fault consists of two mapped fault splays, including the main trace of the Oceano Fault as well as the Santa Maria River Fault, which diverges northward of the Oceano Fault through the Cienega Valley before trending into and across the Nipomo Mesa. It is unknown the extent to which the Oceano and Santa Maria River faults impede groundwater flow within the deep aquifer system materials. However, movement on the faults, as mapped by PG&E (2014), may suggest a possible impediment to flow within the Careaga Sand and possibly the Paso Robles Formation. PG&E (2014) suggests that the existence of the Santa Maria River Fault is “uncertain.” However, the water elevation contour maps of the NCMA (Figure 8, on page 28, and Figure 9, on page 29) (discussed in more 13 The Plio-Pleistocene-age Paso Robles Formation aquifer consists of unconsolidated deposits ranging from fine to coarse sand and gravel, silty to clayey sand and gravel, and fine to medium silty sand. Regionally, the formation is compartmentalized into two to five aquifers zones designated from top to bottom as the A to E Zones. These aquifer zones are separated by silt and clay confining beds near the coast and are generally merged inland (DWR, 1970). 14 The Pliocene-age Careaga Sand consists of unconsolidated to well-cemented calcareous coarse sand with gravel, fine to medium sand, and silty sand. The Careaga Sand is of marine origin (DWR, 1970). Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 24 detail in Section 3.1.1) may suggest that the Santa Maria River Fault plays a potential, but unknown, role in groundwater flow across the NCMA. The Wilmar Avenue Fault generally forms the northern boundary of the NCMA, apparently acting as a barrier to groundwater flow from the older consolidated materials north of the fault southward into the SMGB. There is no evidence, however, that the Wilmar Avenue Fault impedes alluvial flow in the Pismo Creek, Meadow Creek, or Arroyo Grande Creek alluvial valleys. 2.5 Groundwater Flow The groundwater system of the NCMA has several sources of recharge including precipitation, agricultural return flow, seepage from stream flow, and subsurface inflow from adjacent areas. Precipitation-driven recharge is enhanced by several stormwater retention ponds in NCMA.15 According to the DWR Bulletin 63-3 report (DWR, 1970), both the Paso Robles Formation aquifer and the lower confined portion of the Cienega Valley alluvial aquifer are recharged primarily from subsurface groundwater inflow from the east, where the overlying confining layers are thin to nonexistent (DWR, 1970). These recharge areas to the east include inland reaches of Arroyo Grande Valley and portions of Nipomo Mesa (DWR, 1970). Groundwater quality data presented in DWR Bulletin 63-3 (DWR, 1970), and corroborated with data available through the Central Coast Regional Water Quality Control Board Irrigated Lands Regulatory Program (ILRP), show evidence of recharge to the alluvial aquifer of the Cienega Valley from the Paso Robles Formation aquifer on the Nipomo Mesa. However, this recharge mechanism appears to be slowing due to declining water levels on the Nipomo Mesa as documented in recent NMMA annual reports (see Section 6.1.1). The deep aquifer system is also recharged to a lesser extent by percolation of direct precipitation and agricultural return flow on the Tri-Cities Mesa (DWR, 1970). In addition, some return flows occur from imported surface supply sources including Lopez Lake and the California State Water Project (SWP). Discharge in the region is dominated by groundwater production from pumping wells, but minor discharge certainly occurs through phreatophyte16 consumption and surface water outflow. Historically, groundwater elevations in wells throughout the NCMA and resulting hydraulic gradients show that subsurface outflow discharge occurs westward from the groundwater basin to the ocean. This subsurface outflow is an important control to limit the potential of seawater intrusion. This westward gradient and direction of groundwater flow still is prevalent throughout the northern portion of NCMA, although there is some evidence recently that the westward gradient may have reversed in the area south of Cienega Valley. The following descriptions of the boundary conditions of the NCMA are derived primarily from Todd (2007). The eastern boundary is coincident with the SLOFC&WCD Zone 3 management boundary and with the northwestern boundary of the NMMA. Aquifer materials of similar formation, provenance, and characteristics are present across most of this boundary, which allows subsurface flow to occur between the NCMA and NMMA. The northern and northwestern boundary, established by the Court during the 2005 Stipulation, is coincident with the Wilmar Avenue Fault, which is located approximately along Highway 101 from Pismo Creek to the southeastern edge of the Arroyo Grande Valley. There is likely insignificant subsurface flow from the 15 Within their jurisdictions, Arroyo Grande and Grover Beach each maintain stormwater retention ponds; the SLOFCWCD maintains the stormwater system, including retention ponds, in OCSD. These ponds collect stormwater runoff, allowing the runoff to recharge the underlying aquifers. 16 A phreatophyte is a deep-rooted plant that obtains a significant portion of the water that it needs from the water table. Phreatophytes are plants that are supplied with surface water or the upper portion of the near-surface water table and often have their roots constantly in touch with moisture. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 25 consolidated materials (primarily Pismo Formation) north of the Wilmar Avenue Fault across the boundary into the SMGB; however, basin inflow occurs within the underflow associated with alluvial valleys of Arroyo Grande and Pismo creeks. The southern boundary of the NCMA is an east-west line, roughly located along the trend of Black Lake Canyon and perpendicular to the coastline. Historically, it appears that groundwater flow is typically roughly parallel to the boundary. This suggests that little to no subsurface inflow occurs across this boundary. The western boundary of the NCMA follows the coastline from Pismo Creek in the north to Black Lake Canyon. Given the generally westward groundwater gradient in the area, this boundary is the site of subsurface outflow and is an important impediment to seawater intrusion. However, the boundary is susceptible to seawater intrusion if groundwater elevations onshore decline, such as may be occurring seasonally in the southeast portion of NCMA along the boundary with NMMA. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 26 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 27 SECTION 3: Groundwater Conditions 3.1 Groundwater Levels Groundwater elevation data are gathered from the network of wells throughout the NCMA to monitor the effects of groundwater use and recharge, and to monitor the threat of seawater intrusion. Over time, analysis of these groundwater elevation data has included development of groundwater surface contour maps, hydrographs, and an index of key sentry well water elevations. The historical groundwater elevation data are provided in Appendix A. 3.1.1 Groundwater Level Contour Maps Contoured groundwater elevations for the spring (April 2021) and fall (October 2021) monitoring events, including data from the County monitoring program, are shown in Figure 8, on page 28, and Figure 9, on page 29, respectively. From an increased understanding of the groundwater basin aquifer system and to be consistent with recent work completed for the Phase 1B model, the groundwater elevation analysis was performed separately for each of the two principal aquifers. As described earlier (Section 2.4), the two principal aquifers are the deep aquifer (consisting of the Paso Robles Formation and the Careaga Sand) from which all municipal production is pumped, and the alluvial aquifer within the Cienega Valley, from which all agricultural production is pumped. Groundwater level contours for April 2021 are presented in Figure 8, on page 28. Spring groundwater elevation contours in the deep aquifer system north of the Santa Maria River Fault show a westerly to southwesterly groundwater flow. The groundwater gradient and flow in the deep aquifer system in the southern portion of the NCMA are generally inferred on the basis of historical records, historical trends, and water level data from the NMMA farther east. This is due to the limited number of wells and water level data in the southernmost portion of the NCMA that is dominated by sensitive-species dunes and California State Parks land. Spring groundwater contours in the alluvial aquifer exhibit a gradient and flow direction that generally follows the alignment of Arroyo Grande Creek. The alluvial groundwater contours also indicate an inflow of groundwater from the Los Berros Creek drainage (Figure 8, on page 28). Agricultural groundwater pumping results in seasonal drawdown of the alluvial aquifer in the Cienega Valley south and east of Arroyo Grande Creek. As shown on Figure 8, on page 28, the April 2021 alluvial groundwater elevations in the Cienega Valley are in the range of below 0 feet to more than 30 feet North American Vertical Datum 1988 (NAVD 88).17 Similar to April 2020, these data show formation of a subdued pumping trough in the Cienega Valley, with groundwater elevations generally below sea level in the center of the depression. This formation of a pumping trough early in the year may be due to a relatively dry February and March preceding the collection of groundwater elevation measurements in April 2021. April 2021 groundwater elevations in the deep aquifer system main production zone along the coast ranged from 7.0 to 9.0 feet above sea level. Slight pumping effects are noted in the area of concentrated municipal pumping on Tri-Cities Mesa. Spring-time pumping effects have occasionally occurred in the past, generally following a dry winter during a period of drought. Prior to this year, spring-time pumping effects had not been observed since 2017. 17 Note that NAVD 88 is 2.72 feet lower than mean sea level, as recorded at the Port San Luis tide station datum (available at https://tidesandcurrents.noaa.gov/datums.html?id=9412110); however, for the purposes of this report it will be referred to as sea level. !H !H!H!H!H !H !H!H!H!H!H!H !H !H !H!H!H !H !H 010OC E A N O F A U L T WI L M A R A V E N U E F A U L T SA N T A M A R I A R I V E R F A U L T70604 0 30 20 505 1010 20300PismoCreekArroyoGrandeCreekMeadowCr e e k Lo sBerros Creek TarSpringCreek £¤101 Notes: NAVD88 - North American Vertical Datum of 1988 Date: December 29, 2021 Data Sources: SLO County, USGS, NCMA and NMMA Agencies, California Geological Survey, ESRI LEGEND Sentry Well !H Municipal Well Alluvial Groundwater Contour(feet, NAVD88) Deep Groundwater Contour(feet, NAVD88) Fault (dashed where inferred) All Other Features Northern Cities ManagementArea Cienega Valley Interstate Watercourse Groundwater Elevation Contours Spring 2021 FIGURE 8 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\008_2021_Annual_Report\Figure8_NCMA_Water_Level_Contours_Spring_2021.mxd o 0 1 MilesP A C I F I C O C E A N 28 !H !H!H!H!H !H !H!H!H!H!H!H !H !H !H!H!H !H !H 2040506070SA N T A M A R I A R I V E R F A U L T O C E A N O F A U L T WI L M A R A V E N U E F A U L T 0100-10301005-105PismoCreek Arroyo Grande Cre e kMeadowCreek LosBerrosCreek TarSpringCreek £¤101 Notes: NAVD88 - North American Vertical Datum of 1988 Date: December 29, 2021 Data Sources: SLO County, USGS, NCMA and NMMA Agencies, California Geological Survey, ESRI LEGEND Sentry Well !H Municipal Well Alluvial Groundwater Contour(feet, NAVD88) Deep Groundwater Contour(feet, NAVD88) Fault (dashed where inferred) All Other Features Northern Cities ManagementArea Cienega Valley Interstate Watercourse FIGURE 9 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\008_2021_Annual_Report\Figure9_NCMA_Water_Level_Contours_Fall_2021.mxd o 0 1 MilesP A C I F I C O C E A N Groundwater Elevation Contours Fall 2021 29 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 30 Groundwater elevation contours for October 2021 are presented in Figure 9, on page 29. Fall groundwater contours in the deep aquifer system north of the Santa Maria River Fault show a generally west-to- southwesterly groundwater flow, similar to conditions in the spring, but with some minor pumping effects evident in the area of the municipal wells. Fall groundwater contours in the alluvial aquifer show pumping effects from agricultural groundwater production, including a pronounced pumping depression in the southeast portion of the Cienega Valley (Figure 9, on page 29). Similar to observed trends for spring 2021, the fall alluvial groundwater contours indicate an inflow of groundwater from the Los Berros Creek drainage (Figure 9, on page 29). The alluvial aquifer groundwater conditions in October 2021 shows a decline of approximately 1 to 14 feet from elevations observed in April 2021. These conditions are consistent with the pumping depressions observed historically during the fall within the Cienega Valley. The alluvial groundwater elevation in the pumping depression in October 2021, at 11.6 feet below sea level, was 2.8 feet higher than was present in October 2020. October 2021 groundwater elevations in the deep aquifer system main production zone along the coast ranged from 3.8 to 7.0 feet above sea level. 3.1.2 Historical Water Level Trends Hydrographs of five wells in the NCMA are presented in Figure 10, on page 31. Two of the wells are completed in the deep aquifer system (32D03 and 32D11) and three of the wells are completed in the alluvial aquifer within the Cienega Valley (28K02, 30K03, and 33K03). The hydrographs for wells 32D03 and 32D11 (Figure 10, on page 31) are paired hydrographs for deep aquifer system wells in the vicinity of the municipal wellfields. Depending on the duration of pumping of the municipal wells, water levels in these wells historically have been below the levels of wells in other areas of the NCMA for prolonged periods of time. The hydrographs show that, historically, groundwater elevations in these wells generally have been above mean sea level. In 2007 to 2009, an area of lower groundwater elevations (a trough) beneath the active wellfield appeared. Groundwater pumping was at its peak in 2007 to 2009 (in comparison with pumping of the last 30 years) and contributed to the apparent seawater intrusion event in the coastal wells in 2009. As illustrated in Figure 10, on page 31, the water elevations of all the wells, including the paired deep aquifer system wells 32D03 and 32D11, exhibited a steady decline from 2011 to 2016, during which time rainfall was below normal every year. In this period, groundwater elevations declined to near sea level or, in the case of alluvial aquifer well 33K03, to below sea level. By October 2016, the groundwater elevations in these wells were generally below the levels observed in 2009–2010. In 2016 and 2017, these five wells each exhibited an overall increase in water levels (with the exception of the normal, seasonal decline during the summer), generally reaching similar water levels as observed in 2011. However, since 2017, water levels have returned to a generally declining trend in all of the wells. The water level in well 33K03, located near the NCMA/NMMA boundary, is currently less than one foot above sea level. 3.1.3 Sentry Wells and the Deep Well Index Regular monitoring of water elevations in clustered sentry wells located along the coast are an essential tool for tracking critical groundwater elevation changes at the coast. Groundwater elevations in these wells are monitored quarterly as part of the sentry well monitoring program. As shown by the hydrographs for the five sentry well clusters (Figure 11, on page 32), the sentry wells provide a long history of groundwater elevations. FIGURE 10. SELECTED HYDROGRAPHS Northern Cities Management Area San Luis Obispo County, California 1990 1995 2000 2005 2010 2015 2020 2025 -20 -10 0 10 20 30 40 50 -20 -10 0 10 20 30 40 50 -20 -10 0 10 20 30 40 50 -20 -10 0 10 20 30 40 50 60 P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 10 NCMA Selected Hydrographs.grf Well 32D03 Well 32D11 Water Elevation, feet NAVD8832D03 and 32D11 28K02 30K03 33K03 Notes: NAVD88 - North American Vertical Datum of 1988 31 FIGURE 11. SENTRY WELL HYDROGRAPHS Northern Cities Management Area San Luis Obispo County, California 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025 0 5 10 15 200 5 10 15 200 5 10 15 200 5 10 15 20 P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 11 NCMA Sentry Well Hydrographs.grf Well 24B03 Well 24B02 Water Elevation, feet NAVD88North Beach Campground Highway 1 Pier Avenue Oceano Dunes Well 30F03 Well 30F02 Well 30N02 Well 30N03 Well 36L01 Well 36L02 Flowing Artesian Flowing Artesian Flowing Artesian Notes: NAVD88 - North American Vertical Datum of 1988 32 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 33 Inspection of the recent data shown in Figure 11, on page 32, compared with the historical record illustrates some noteworthy trends:  From 2013 until near the end of 2016, the water level trend of well 30N02—one of the wells that experienced elevated TDS and chloride levels (i.e., water quality degradation) in 2009–2010—looked quite similar to the water level trend of the well in 2007–2010, immediately before and during the period of incipient seawater intrusion. This trend was noteworthy and alarming. However, since the end of 2016 and continuing through 2020, the downward trend reversed and stabilized with water elevations seasonally fluctuating around 8 feet above sea level. In 2021, water elevations have again begun to trend slightly downward, likely in response to below average rainfall in 2020, and 2021.  The decline in water levels from 2005 to 2016 in the Oceano Dunes wells (36L01 and 36L02) was also notable and potentially significant, particularly in well 36L01, which is screened across the Paso Robles Formation. In 2016, both wells reached historical low water elevations. However, since the end of 2016 and continuing through 2020, both wells had recovered to less-alarming levels. Similar to well 30N02, water elevations in the Oceano Dunes wells have again begun to trend slightly downward, likely in response to below average rainfall in 2020, and 2021. The deepest wells in the clusters, 24B03, 30F03, and 30N02, were previously identified as key wells to monitor for potential seawater intrusion and were suggested to reflect the net effect of changing groundwater recharge and discharge conditions in the primary production zone of the deep aquifer system. One of the thresholds to track the status and apparent health of the aquifer is to average the groundwater elevations from these three deep sentry wells to generate a single, representative index, called the Deep Well Index. Previous studies suggested a Deep Well Index value of 7.5 feet above sea level as a minimum threshold, or trigger value, below which the aquifer is at risk for eastward migration of seawater and a subsequent threat of encroaching seawater intrusion. Historical variation of this index value is represented by the average deep sentry well elevations in Figure 12, on page 35. Inspection of the Deep Well Index in 2008–2009, prior to the period of water quality degradation in wells 30N03 and 30N02, shows that the Deep Well Index dropped below the 7.5-foot trigger value and remained below that level for almost 2 years. It appears that prolonged levels below the threshold may be causing the degradation. Since the start of the recent drought in 2011, the Deep Well Index dropped several times below the threshold, but usually for only a few months at a time. In 2021, the Deep Well Index started the year above the trigger value with an index value of more than 9 feet in January. It continued to rise, reached a high of nearly 10 feet during February, and then began to decline. The index value dropped below the 7.5-foot trigger value by July and continued to fall to a low point of just over 6 feet in late October. A slow recovery occurred through November, followed by a more rapid recovery in December, coincident with the above average monthly rainfall received in December. The index value continued to rise throughout the end of the year and finished 2021 at about 9 feet above sea level (Figure 12, on page 35). Key wells—including 24B03, 30F03, 30N02, 36L01, 36L02, and 32C03—are instrumented with pressure transducers equipped with conductivity probes that periodically record water level, water temperature, and conductivity (Figures 13 through 18, on pages 36 through 41). It should be noted that transducer malfunctions have resulted in variable conductivity data in some of the wells during certain years, including 2015 and 2019. Malfunctioning transducers have been replaced and continue to be monitored in an ongoing effort to maintain a properly functioning monitoring network. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 34 Wells 24B03, 30F03, and 30N02 comprise the wells used to calculate the Deep Well Index. Wells 36L01 and 36L02 are adjacent to the coast. Well 32C03 is the easternmost well and adjacent to the boundary between the NCMA and NMMA. The following discusses 2021 water levels for these key wells:  Deep Well Index Wells: The Deep Well Index wells exhibited a pattern throughout 2021 that is consistent with previous years. The water levels in wells 24B03, 30F03, and 30N02 generally declined starting in February 2021 and continued to decline into October when they began to rise.  Also consistent with patterns seen in previous years is the variability of aquifer response among the three wells. Well 24B03, the northernmost well and located in the North Beach Campground, maintains a relatively stable and moderated water level throughout the year and consistently sustains groundwater elevations higher than the Deep Well Index value. The water level in 24B03 mitigates the water levels in 30N02, which typically maintain levels consistently deeper than the Deep Well Index. Well 30F03 generally closely follows the Deep Well Index value.  Coastal Wells: The groundwater elevation in well 36L01, screened within the Paso Robles Formation, remained 5 to 7 feet above sea level throughout 2021 and remained stable within the relatively narrow historical range. The water level in well 36L02, which is screened within the Careaga Sand, illustrates a much greater seasonal fluctuation than is observed in 36L01. The water elevation in 36L02 dropped slightly below sea level in late July and remained below sea level into late-August.  NCMA/NMMA Boundary: Well 32C03, which shows regular seasonal fluctuations, remained above sea level throughout all of 2017, 2018, 2019, 2020, and 2021, in contrast with the prior 4 years when the water level dropped below sea level in August and remained at a low elevation until early October. FIGURE 12. HYDROGRAPH OF DEEP WELL INDEX ELEVATION Northern Cities Management Area San Luis Obispo County, California 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 -5-4-3-2-101234567891011121314151617181920 Deep Well Index Elevation, feet NAVD88Deep Well Index Elevation (Wells 24B03, 30F03 and 30N02) 0 100 200 300 400 500 600 700 800 Chloride, mg/LWell 30N02 Well 24B03 Well 30F03 Deep Well Index Threshold: 7.5 feet Deep Well Index is the average of groundwater elevations in the deep wells of Sentry Well clusters 24B,30F, and 30N (see Figure 3 for locations of monitoring wells and Figure 4 for well depths). P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 12 Hydrograph of Deep Well Index Level.grf Notes: NAVD88 - North American Vertical Datum of 1988 mg/L - milligrams per liter 35 FIGURE 13. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 24B03 Northern Cities Management Area San Luis Obispo County, California 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 -5-4-3-2-101234567891011121314151617181920Water Elevation, feet NAVD880 400 800 1,200 1,600 2,000 SpecificConductivityuS/cmWell 24B03 North Beach Campground Deep Well Well Depth: 435 feet (Careaga Sand) Deep Well Index 65 67 69 71 73 TemperatureºFDeep Well Index Threshold: 7.5 feet P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 13 NCMA Well 24B03.grf Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter Data gap due to accidental removal of transducers by SLO Co. 36 FIGURE 14. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 30F03 Northern Cities Management Area San Luis Obispo County, California 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 -5-4-3-2-101234567891011121314151617181920Water Elevation, feet NAVD880 400 800 1,200 1,600 2,000 SpecificConductivityuS/cmWell 30F03 Highway 1 Deep Well Well Depth: 372 feet (Careaga Sand) Deep Well Index 65 67 69 71 73 TemperatureºFDeep Well Index Threshold: 7.5 feet P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 14 NCMA Well 30F03.grf Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter Data gap due to accidental removal of transducers by SLO Co. 37 FIGURE 15. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 30N02 Northern Cities Management Area San Luis Obispo County, California -5-4-3-2-101234567891011121314151617181920Water Elevation, feet NAVD882012 2013 2014 2015 2016 2017 2018 2019 2020 2021 0 400 800 1,200 1,600 2,000 SpecificConductivityuS/cmWell 30N02 Pier Avenue Deep Well Well Depth: 255 feet (Paso Robles Formation) Deep Well Index 63 65 67 69 71 TemperatureºFP:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 15 NCMA Well 30N02.grf Deep Well Index Threshold: 7.5 feet Sensor malfunction. Field measurements indicate that specific conductivity is stable Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter Data gap due to accidental removal of transducers by SLO Co. 38 FIGURE 16. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 36L01 Northern Cities Management Area San Luis Obispo County, California 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 -5-4-3-2-101234567891011121314151617181920Water Elevation, feet NAVD880 400 800 1,200 1,600 2,000 SpecificConductivityuS/cmWell 36L01 Oceano Dunes Deep Well Well Depth: 237 feet (Paso Robles Formation) 65 67 69 71 73 TemperatureºFP:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 16 NCMA Well 36L01.grf Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter 39 FIGURE 17. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 36L02 Northern Cities Management Area San Luis Obispo County, California 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 -5-4-3-2-101234567891011121314151617181920Water Elevation, feet NAVD880 400 800 1,200 1,600 2,000 SpecificConductivityuS/cmWell 36L02 Oceano Dunes Deep Well Well Depth: 545 feet (Careaga Sand) Well 36L02 Manual Measurements 65 67 69 71 73 TemperatureºFP:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 17 NCMA Well 36L02.grf Transducer data corrupted Dashed where inferred Sensor malfunction. Field measurements indicate that specific conductivity is stable Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter 40 FIGURE 18. WATER ELEVATION, CONDUCTIVITY, AND TEMPERATURE, WELL 32C03 Northern Cities Management Area San Luis Obispo County, California 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 Water Elevation, feet NAVD880 400 800 1,200 1,600 2,000 SpecificConductivityuS/cm65 67 69 71 73 TemperatureºFWell 32C03 (County Monitoring Well No. 3) Well Depth: 170 feet (Paso Robles Formation) P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 18 NCMA Well 32C03.grf Notes: NAVD88 - North American Vertical Datum of 1988 uS/cm - microsiemens per centimeter 41 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 42 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 43 3.2 Change in Groundwater in Storage The relative change of groundwater levels and associated change in groundwater in storage in the NCMA portion of the SMGB between April 2020 and April 2021 were estimated using a comparison of water level contour maps created for these periods. Separate estimates of change in groundwater in storage were computed for both the deep aquifer system and for the alluvial aquifer and then summed together to represent the total NCMA estimated change in groundwater in storage. The comparison of the April water levels was chosen to comply with DWR reporting requirements and SGMA. For each aquifer, the groundwater contour lines from each period were compared and the volumetric difference between the two periods was calculated. The results are presented in Figure 19, on page 44, and Figure 20, on page 45, which show contours of equal difference between April 2020 and April 2021 water elevations in the deep aquifer system and the alluvial aquifer, respectively. Figure 19, on page 44, shows that deep aquifer system water elevations decreased across the NCMA, resulting in a net decrease of groundwater in storage in the deep aquifer. Larger deep aquifer water elevation declines are noted along the southeastern boundary with NMMA and within the area of concentrated municipal pumping on Tri-Cities Mesa. Figure 20, on page 45, shows that alluvial aquifer water elevations decreased throughout all but the southern end of the extent of alluvium in the Cienega Valley, resulting in a net decrease of groundwater in storage in the alluvial aquifer. From the change of water levels maps, a volumetric change in groundwater in storage estimate was made for each aquifer, based on assumed aquifer properties,18 and then summed to represent the total NCMA estimated change in groundwater in storage. The net changes in groundwater levels in both aquifers represents a net decrease of groundwater in storage from April 2020 to April 2021 of approximately 1,400 AF (compared to a net decrease of 500 AF during the previous year). 18 A storage coefficient of 0.02 was used for the deep aquifer system. This is representative of the Paso Robles Formation and Careaga Sand in the area, as documented in the SMGB Characterization Project (Fugro, 2015). A specific yield value for the alluvial aquifer of 0.09 was back-calculated using the 2019 estimated change in alluvial groundwater in storage represented by the calculated agricultural demand (Section 4.2.1) and an alluvial groundwater elevation change map representing the total volume change that occurred between April 2019 and October 2019. -10 SA N T A M A R I A R I V E R F A U L T O C E A N O F A U L T WI L M A R A V E N U E F A U L T -5-10-5PismoCreek Arroyo Grande Cre e kMeadowCreek LosBerros Creek TarSpringCreek £¤101 Date: January 25, 2022 Data Sources: SLO County, USGS, NCMA and NMMA Agencies,California Geological Survey, ESRI, Maxar Imagery (2020) LEGEND Contour of Equal Differencein Water Level, feet Area of Net Decline Area of Net Rise All Other Features Northern Cities ManagementArea Fault (dashed whereinferred) Interstate Watercourse FIGURE 19 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\008_2021_Annual_Report\Figure19_Water Level Change_Spring2020_2021_Deep.mxd o 0 1 MilesP A C I F I C O C E A N Change in Groundwater Elevation, Deep Aquifer SystemApril 2020 to April 2021 44 -5-15 10SA N T A M A R I A R I V E R F A U L T O C E A N O F A U L T WI L M A R A V E N U E F A U L T -5 -10 50-5PismoCreekArroyo Grande Cre e kMeadowCreek LosBerrosCreek TarSpringCreek £¤101 LEGEND Contour of Equal Difference inWater Level, feet Area of Net Decline Area of Net Rise All Other Features Northern Cities ManagementArea Fault (dashed where inferred) Interstate Watercourse FIGURE 20 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\008_2021_Annual_Report\Figure20_Water Level Change_Spring2020_2021_Qal.mxd o 0 1 MilesP A C I F I C O C E A N Change in Groundwater Elevation, Alluvial AquiferApril 2020 to April 2021 Date: January 25, 2022 Data Sources: SLO County, USGS, NCMA and NMMA Agencies,California Geological Survey, ESRI, Maxar Imagery (2020) 45 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 46 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 47 3.3 Water Quality Water is used in several ways in the NCMA, and each use requires a certain minimum water quality. Because contaminants from seawater intrusion or from anthropogenic sources can potentially impact the quality of water in the aquifer, water quality is monitored at each of the sentry well locations in the NCMA and County Monitoring Well No. 3 (32C03). 3.3.1 Quarterly Groundwater Monitoring Quarterly groundwater monitoring events occurred in January, April, July, and October 2021. During each event, depths to groundwater were measured, and wells were sampled using procedures, sampling equipment, and in-field sample preservation protocol pursuant to ASTM International Standard D4448-01. The water quality data from these events and historical data from these wells are provided in Appendix A. Graphs of historical chloride and total dissolved solids (TDS) concentrations over time are presented in Figure 21, on page 48, and Figure 22, on page 49, respectively, to monitor for trends that may aid in the detection of impending seawater intrusion. The historical water quality data show that concentration levels of chlorides and TDS, as well as other constituents, have remained relatively stable within a very narrow historical range since 2009. Improved management of municipal groundwater use, due to an overall reduction in pumping since 2009, has likely contributed to the past several years of relatively stable groundwater quality. FIGURE 21. CHLORIDE CONCENTRATIONS IN MONITORING WELLS Northern Cities Management Area San Luis Obispo County, California 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 0 100 2000 100 2000 100 2000 100 200 P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 21 NCMA Chloride Grouped.grf Well 24B03 Well 24B02 Well 30F01Well 30F02 Well 30F03 Well 30N03 Well 30N02 Well 36L02 Well 36L01 Well 32C03Chloride Concentration, mg/LNorth Beach Campground Highway 1 Pier Avenue Oceano Dunes and 32C03 Notes: mg/L - milligrams per liter 48 FIGURE 22. TOTAL DISSOLVED SOLIDS CONCENTRATIONS IN MONITORING WELLS Northern Cities Management Area San Luis Obispo County, California 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 0 500 1,000 1,5000 500 1,000 1,5000 500 1,000 1,5000 500 1,000 1,500 P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 22 NCMA TDS Grouped.grf Well 24B03 Well 24B02 Well 30F01Well 30F02 Well 30F03 Well 30N03 Well 30N02 Well 36L02 Well 36L01 Well 32C03Total Dissolved Solids Concentration, mg/LNorth Beach Campground Highway 1 Pier Avenue Oceano Dunes and 32C03 Notes: mg/L - milligrams per liter 49 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 50 3.3.2 Analytical Results Summary Analytical results of key water quality data, including chloride, TDS, and sodium, were generally consistent with historical concentrations and observed ranges of constituent concentrations during 2021. In general, no water quality results were observed that are a cause of concern. Figure 23A through D, beginning on page 52, are a set of Piper diagrams, representing groundwater sampling results from each of the quarterly sampling events in 2021. The Piper diagram provides a means of presenting the relative abundance of common ions (cations and anions) of each water quality sample. The relative abundance of common ions in each water quality sample, including cations; sodium, calcium, magnesium, and potassium, and anions; bicarbonate, chloride, and sulfate, determine the ‘water quality type’ of the sample. Examples of different water quality types include ‘calcium-magnesium-sulfate’ type (i.e. 30N02 and 36L01), ‘sodium-chloride’ type (i.e., 32C03), and ‘calcium-bicarbonate’ type (all remaining monitored wells). The Piper diagrams (Figure 23A–D, beginning on page 52) show the quarterly 2021 water quality results, which generally fall into these three water quality type groupings. The relative abundance of common ions found in seawater is presented as a red “X” on the Piper diagrams for reference purposes. Well 32C03 generally demonstrates the most similar signature to seawater, however, the total dissolved solids present in 32C03 are more than two orders of magnitude lower than that of seawater19. In the event of possible future incipient seawater intrusion, a migration towards the seawater base (red “X”) would be expected for the affected well(s) on the Piper diagram. Three separate water quality types are found in the monitoring wells: 1. The Pier Avenue deep well (30N02), screened in the Paso Robles Formation from 175 to 255 feet bgs, and Oceano Dunes intermediate well (36L01), screened in the Paso Robles Formation from 227 to 237 feet bgs, are screened in the same production zone. This is despite their different nomenclature as “deep” compared with “intermediate” wells. Relative to the other wells in the area, these two wells are high in sulfates and have calcium-magnesium-sulfate-rich water. Both wells are relatively low in chloride. This is significant because this zone, and well 30N02, was the site of an apparent seawater intrusion event in 2009–2010. 2. The County Monitoring Well No. 3 (32C03), screened from 90 to 170 feet bgs, in the Paso Robles Formation, has an apparent water quality that is different than any of the other wells in the area. It is relatively high in sodium, chloride, and potassium. Its location in the right quadrant of the diamond- shaped part of the Piper diagram (Figure 23A–D, beginning on page 52) commonly characterizes a sodium-chloride-rich groundwater representative of marine or deep ancient groundwater, even though it is a relatively shallow well and screened within the Paso Robles Formation, a Plio-Pleistocene-age alluvial deposit. 3. All of the other wells in the monitoring network fall into the third category of groundwater water quality. These wells are all generally a calcium-bicarbonate groundwater that is commonly associated with shallow groundwater. This grouping of water quality represents groundwater from wells that are screened in both the Paso Robles Formation and the Careaga Sand (wells 24B03, 30F03, and 36L02 are screened in the Careaga Sand; the others are screened in the Paso Robles Formation). None of the water quality results from monitoring wells throughout 2021 indicate an incipient episode or immediate threat of seawater intrusion. There have been no water quality results indicative of seawater 19 The concentration of TDS in well 32C03 is generally the lowest out of all 16 monitored wells in NCMA. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 51 intrusion since the decline of TDS, sodium, and chloride concentrations detected in Paso Robles Formation wells 30N02, 30N03, and OCSD MW-Blue following the 2009 – 2010 seasons. No indications of seawater intrusion have been observed in wells screened in the underlying Careaga Sand. At this time, without additional offshore data, the precise location of the interface or mixing zone is not known and will not be known unless and until it intercepts a monitoring well. However, the airborne electromagnetic survey conducted in 2020 (Section 1.7.4) indicates that no seawater intrusion was occurring in the deep aquifer system at the time of the survey, and that the interface generally conformed to the Ghyben-Herzberg ratio20 20 Under normal conditions, the higher density of saltwater causes it to move into coastal aquifers in a wedge shape under the freshwater. The shape of the saltwater wedge is described by the Ghyben–Herzberg ratio which states that, for every foot of fresh water in an unconfined aquifer above sea level, there will be forty feet of fresh water in the aquifer below sea level (Ploessel, 1982). FIGURE 23A. PIPER DIAGRAMS OF WATER QUALITY IN SELECT MONITORING WELLS - 2021 Q1 RESULTS Northern Cities Management Area San Luis Obispo County, California 52 FIGURE 23B. PIPER DIAGRAMS OF WATER QUALITY IN SELECT MONITORING WELLS - 2021 Q2 RESULTS Northern Cities Management Area San Luis Obispo County, California 53 FIGURE 23C. PIPER DIAGRAMS OF WATER QUALITY IN SELECT MONITORING WELLS - 2021 Q3 RESULTS Northern Cities Management Area San Luis Obispo County, California 54 FIGURE 23D. PIPER DIAGRAMS OF WATER QUALITY IN SELECT MONITORING WELLS - 2021 Q4 RESULTS Northern Cities Management Area San Luis Obispo County, California 55 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 56 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 57 SECTION 4: Water Supply and Production/Delivery 4.1 Water Supply The NCMA water supply consists of three major sources including Lopez Lake, the SWP, and groundwater. Each source of supply has a defined delivery volume that varies from year to year. 4.1.1 Lopez Lake The Lopez Project consists of Lopez Lake, Lopez Dam, Lopez Terminal Reservoir, and Lopez Water Treatment Plant and is operated by SLOFCWCD Zone 3. SLOFCWCD Zone 3 provides treated water directly to the Zone 3 contractors and releases water to Arroyo Grande Creek for habitat conservation and agricultural use. The Zone 3 contractors include Arroyo Grande, Grover Beach, Pismo Beach, Oceano CSD, and CSA 12, which serves Avila Beach and is not in the NCMA. The operational safe yield of Lopez Lake is 8,730 acre-feet per year (AFY), which reflects the amount of sustainable water supply during a drought of defined severity. Of this, 4,530 AFY is apportioned to the contractors and 4,200 AFY is reserved for downstream releases to maintain flows in Arroyo Grande Creek and provide groundwater recharge. The 2021 SLOFCWCD Zone 3 allocations are shown in Table 2. Table 2. Lopez Lake (SLOFCWCD Zone 3 Contractors) Water Allocations (AFY) Contractor Normal Water Allocation, (AFY) City of Arroyo Grande 2,290 City of Grover Beach 800 City of Pismo Beach 892 Oceano CSD 303 CSA 12 (not in NCMA) 245 Total 4,530 Downstream Releases 4,200 Safe Yield of Lopez Lake 8,730 Notes AFY = acre-feet per year, CSA = County Service Area CSD = Community Services District SLOFCWCD = County of San Luis Obispo Flood Control & Water Conservation District NCMA = Northern Cities Management Area In December 2014, SLOFCWCD Zone 3 adopted the Low Reservoir Response Plan (LRRP). The LRRP establishes actions that SLOFCWCD Zone 3 can take when the amount of water in storage in the reservoir drops below 20,000 AF, provided that the SLOFCWCD Board of Supervisors declares a drought emergency. The purpose of the LRRP is to limit downstream releases and municipal diversions from Lopez Lake to preserve water within the reservoir, above the minimum pool, for a minimum of 3 to 4 years under drought conditions. The reduction strategies for the LRRP are tied to the amount of water in the reservoir. As the amount of water in the reservoir drops below the triggers (20,000; 15,000; 10,000; 5,000; and 4,000 AF), the hydrologic Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 58 conditions are reviewed, and adaptive management is used to meet the LRRP objectives. The municipal diversions are to be reduced according to the strategies shown in Table 3. Table 3. Lopez Lake Municipal Diversion LRRP Reduction Strategy Amount of Water in Storage (AF) Municipal Diversion Reduction AFY 20,000 0% 4,530 15,000 10% 4,077 10,000 20% 3,624 5,000 35% 2,941 4,000 100% 0 Notes AF= acre-feet, AFY = acre-feet per year The initial prescribed actions after the LRRP is enacted include (1) reductions in entitlement water deliveries; (2) reductions in downstream releases; (3) no new allocations of surplus water from unreleased downstream releases; and (4) extension of time that agencies can take delivery of existing unused water throughout the duration of the drought emergency, subject to evaporation losses if the water is not used in the year of original allocation. Included in the LRRP is an adaptive management provision that allows the initial prescribed actions to be modified and adapted to the specific drought conditions. The initial prescribed actions with respect to downstream releases are that they should be reduced according to the strategies described in Table 4. The release strategies represent the maximum amount of water that can be released. The SLOFCWCD Zone 3 controls the timing of the reduced releases to meet the needs of the agricultural stakeholders and to address environmental requirements. Table 4. Lopez Lake Downstream Release LRRP Reduction Strategy Amount of Water in Storage (AF) Downstream Release Reduction AFY 20,000 9.5% 3,800 15,000 9.5% 3,800 10,000 75.6% 1,026 5,000 92.9% 300 4,000 100% 0 Notes AF= acre-feet, AFY = acre-feet per year The LRRP was put into effect on April 1, 2015. Throughout 2015 and all of 2016, SLOFCWCD Zone 3 operated Lopez Lake pursuant to the 15,000 AF diversion reduction trigger that required a 10 percent reduction in municipal diversions. The 10,000 AF trigger requiring a 20 percent reduction was avoided because agencies enacted mandatory water conservation measures and utilized other sources of water including some minimal rainfall and SWP water. Lopez Lake recovered from a low of 11,000 AF in storage to a peak of more than 30,000 AF in May 2017, ending with approximately 25,000 AF at the start of 2018 because of the relatively Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 59 heavy rainfall year of late 2016 and early 2017. Although contractually the LRRP is no longer in effect when both triggers are rescinded (i.e., the Board of Supervisors declaration of water emergency and reduction of reservoir levels to below 20,000 AF), the SLOFCWCD Zone 3 agencies resolved to keep the LRRP in effect. Because the reservoir volume was above 20,000 AF, no mandatory reductions in municipal deliveries were required in 2017, 2018, or 2019. In 2020, the reservoir storage level stayed above 20,000 AF until December, when it reached a level of 19,826 AF. The LRRP was not activated during 2020. In 2021, the high reservoir storage level occurred in January, at 19,874 AF. The reservoir storage level declined throughout most of 2021, reaching a low point of 14,174 AF in November. With the declining reservoir storage approaching the 15,000 AF trigger level, the Board of Supervisors voted on August 24, 2021, to enact the LRRP and the initial prescribed action of a 10% municipal entitlement reductions (retroactive to April 2021) was put in place. Although the reservoir level recovered slightly in December 2021, to 14,905 AF, the LRRP 15,000 AF trigger level entitlement reductions remain in effect. The total deliveries from Lopez Lake in 2021 was 6,586 AF, of which 3,522 AF were delivered to NCMA contractors, 72 AF were delivered to CSA 12, and 2,992 AF were released downstream to maintain flow in Arroyo Grande Creek (Table 5). When management of releases results in a portion of the 4,200 AFY remaining in the reservoir, or the contractors do not use their full entitlement for the year, the water is offered to the contractors as surplus water. Surplus water deliveries to the NCMA agencies in 2021 equaled 426 AF (Table 5). Table 5. Lopez Lake Deliveries, 2021 Contractor 2021 Allocation Delivery (AF) 2021 Surplus Delivery (AF) 2021 Total Lopez Lake Water Delivery (AF) Arroyo Grande 2,158 0 2,158 Grover Beach 795 0 795 Pismo Beach 143 263 406 Oceano CSD 0 163 163 Total NCMA 2021 Delivery 3,096 426 3,522 CSA 12 (not in NCMA) 72 0 72 Downstream Releases 2,992 -- 2,992 Total 2021 Lopez Lake Deliveries 6,160 426 6,586 Notes AF= acre-feet CSD = Community Services District NCMA = Northern Cities Management Area Source: SLOFCWCD Zone 3 Monthly Operations Reports 4.1.2 State Water Project Pismo Beach and OCSD have contracts with SLOFCWCD Zone 3 to receive water from the SWP. The SLOFCWCD serves as the SWP contractor and provides imported water to local retailers through the SWP Coastal Branch (Coastal Branch) pipeline. Pismo Beach and OCSD, as subcontractors to SLOFCWCD, have annual contractual Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 60 water delivery allocations, commonly referred to as Table A water, of 1,240 21 AFY and 750 AFY, respectively (Table 6). In addition to its Table A allocation, Pismo Beach holds 1,240 AFY of additional allocation known as “drought buffer” and OCSD holds an additional allocation of 750 AFY of drought buffer. The additional drought buffer allocation held by the agencies is available to augment the SWP water supply when the SWP annual allocation, i.e., percentage of SWP water available, is less than 100 percent. The additional allocations also increase each agency’s water held in storage. In any given year; however, the SWP contracts held by Pismo Beach and OCSD are only guaranteed for up to 1,240 AF and 750 AF, respectively 22. Table 6. NCMA SWP Deliveries, 2021 Agency Table A Allocation, AFY Drought Buffer, AFY 2021 Delivery, AF City of Arroyo Grande -- -- -- City of Grover Beach -- -- -- City of Pismo Beach1 1,140 1,240 1,302 2 Oceano CSD 750 750 470 Total Allocation/Usage, AFY 1,890 1,990 1,772 Notes 1 Pismo Beach contracts for 1,240 AF of Table A water from the SWP, but 100 AF are owned by private parties. 2 If excess water is available and there is capacity in the pipeline the SWP contract between SLOFCWCD Zone 3 and Pismo Beach does not prevent annual deliveries in excess of 1,240 AF (personal communication with David Spiegel, SLOFCWCD, on February 3, 2022). AF=acre feet AFY= acre-feet per year CSD = Community Services District NCMA = Northern Cities Management Area The SWP annual allocation for all contractors throughout California (including SLOFCWCD, Pismo Beach and Oceano CSD) for 2021 was initially set on December 1, 2020, at 10 percent of the Table A contractual allocation. The 2021 SWP allocation was then decreased to 5 percent on March 23, 2021. SWP contractors can store undelivered Table A water at the SWP facility in San Luis Reservoir (limitations exist on the amount that can be stored in any one year). This stored water is called “carryover water” and can be delivered in subsequent years, but total annual deliveries cannot exceed their Table A allocation due to capacity restrictions in the Coastal Branch. In addition, carryover water can be lost (or “spilled”) if its storage interferes with storage of current-year SWP water for project needs. For 2022, the initial allocation of the SWP contractors was set at 0 percent of Table A contractual allocation amounts on December 1, 202123. However, on January 20, 2022 the SWP allocation was increased to 15 percent, following above average precipitation in December 2021. 21 100 AF of which is owned by a private party. 22 If excess water is available and there is capacity in the pipeline the SWP contracts between SLOFCWCD Zone 3 and Pismo Beach or OCSD do not prevent annual deliveries in excess of 1,240 AF or 750 AF, respectively (personal communication with David Spiegel, SLOFCWCD, on February 3, 2022). 23 According to DWR’s December 1, 2021 notice to SWP contractors: “Due to persistent dry conditions over the last several years coupled with the elevated risk of continuing drought conditions, the Department of Water Resources (DWR) will be Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 61 The SWP supply has the potential to be affected by drought and environmental issues, particularly because of the endangered Delta smelt in the Sacramento-San Joaquin Delta (Delta). However, OCSD and Pismo Beach as well as the other SLOFCWCD subcontractors have not been negatively affected to date by reduced SWP supplies because of the SLOFCWCD’s large amount of unsubscribed Table A allocation which has been used to fulfill subcontractors’ requests, even in dry years. Therefore, even when SWP supplies are decreased, the SLOFCWCD’s unsubscribed allocation and any carryover water in San Luis Reservoir provides a buffer so that contracted volumes to subcontractors such as OCSD and Pismo Beach may still be provided in full. During 2021, Pismo Beach took delivery of 1,302 AF 22 of SWP water and OCSD took delivery of 470 AF of SWP water. 4.1.3 Groundwater The 2008 Judgment and the 2002 Settlement Agreement govern the use of groundwater in the NCMA and establish that groundwater will continue to be allotted and independently managed by the NCMA agencies, NCMA overlying owners, and SLOFCWCD (collectively known as the Northern Parties). Each of the NCMA agencies has the capability to extract groundwater from municipal water supply wells located in the central and northern portions of the NCMA (Figure 24, on page 62). Groundwater also satisfies agricultural irrigation and rural domestic use throughout the NCMA. The calculated, consensus safe yield value of 9,500 AFY for the NCMA portion of the SMGB was included in the 2002 Settlement Agreement through affirmation of the 2002 Groundwater Management Agreement among the NCMA agencies. The basis of the safe yield was established in 1982 by a Technical Advisory Committee, consisting of representatives from Arroyo Grande, Grover Beach, Pismo Beach, OCSD, Avila Beach Community Water District, Port San Luis Harbor District, the Farm Bureau, and the County to deal with a safe yield allocation strategy and agreement not to exceed the safe yield of what was then called the Arroyo Grande Groundwater Basin. The basis for the committee's analysis was DWR (1979). The Technical Advisory Committee concluded that the safe yield was 9,500 AFY. These findings and the allocation of the safe yield were incorporated into a groundwater management plan (1983 Gentlemen’s Agreement and 2002 Groundwater Management Agreement) and further formalized in the 2002 Settlement Agreement and the 2005 Stipulation. The 9,500 AFY safe yield provides allotments for agricultural irrigation of 5,300 AFY, subsurface outflow to the ocean of 200 AFY, and urban use entitlement of 4,000 AFY. The volume of the entitlement for urban use was subdivided as follows:  Arroyo Grande: 1,202 AFY  Grover Beach: 1,198 AFY  Pismo Beach: 700 AFY  OCSD: 900 AFY allocating the initial 2022 State Water Project (SWP) available supplies on a basis that ensures the SWP long-term water supply contractors (Contractors) can meet their outstanding minimum human health and safety demands for water (health and safety allocation). Pursuant to Article 18(a) of the long-term water supply contract between DWR and each of the SWP Contractors, the initial 2022 SWP allocation will be based on minimum unmet water demands to meet domestic supply, fire protection, and sanitation needs (referred to herein as “health and safety” needs) during the year. These health and safety needs are determined to be not more than 55 gallons per capita per day (gpcd), consistent with the recent State Water Resources Control Board (SWRCB) emergency curtailment regulations.” !R !R!R!R!R !R !R!R!R!R!R!R!R !R !R!R!R !R !R £¤101 Sant a M a r i a R i v e r F a u l tPismoCreekArroyoGrandeCr eekMeadow C reek L o s B erros Creek Oc e a n o F a u l t Wilmar A v e n u e F a u l t Date: February 26, 2020 Data Sources: LEGEND !R City of Arroyo Grande Well !R City of Grover Beach Well !R City of Pismo Beach Well !R Oceano Community Services District Well Northern Cities Management AreaFaultsStreams Locations of MunicipalProduction Wells FIGURE 24 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\_nonGISP\0672_Northern_Cities_Management_Area\Source_Figures\006_2019_Annual_Report\Annual_Report\Figure24_Locations of Municipal Production Well.mxd o 0 1 Miles PacificOcean 62 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 63 The safe yield allotment for agricultural irrigation is significantly higher than the actual historical agricultural irrigation demand and the calculated amount for subsurface outflow is unreasonably low. Todd (2007) recognized that maintaining sufficient subsurface outflow to the coast and preservation of a westward groundwater gradient is essential to preventing seawater intrusion. A regional outflow of 3,000 AFY was estimated as a reasonable approximation (Todd, 2007) although the minimum subsurface outflow necessary to prevent seawater intrusion is unknown. The Phase 1C model (see Section 1.7.3) may be utilized in the future to further evaluate regional subsurface outflow to the ocean. The 2001 Groundwater Management Agreement provides that groundwater entitlements of each of the urban agencies can be increased when land within the corporate boundaries is converted from agricultural use to urban use, which is referred to as an agricultural conversion credit. Agricultural conversion credits equal to 121 AFY and 209 AFY were developed in 2011 for Arroyo Grande and Grover Beach, respectively. These agricultural credits were unchanged during 2021. Total groundwater production in the NCMA, including agricultural irrigation and rural uses, is shown in Table 7 (descriptions of agricultural irrigation applied water and rural use estimation are provided in Sections 4.2.1 and 4.2.2, respectively). The total estimated groundwater pumpage in 2021 from the NCMA portion of the SMGB was 3,344 AF Table 7. NCMA Groundwater Entitlement and Production from Santa Maria Groundwater Basin, 2021 Total Entitlement/Use Groundwater Entitlement + Ag Conversion Credit (AF) 2021 Groundwater Use from SMGB (AF) Total Urban Groundwater Entitlement /Use 4,000 + 330 = 4,330 759 Total NCMA Groundwater Entitlement /Use 9,500 3,344 Notes AF= acre-feet Ag = agriculture SMGB = Santa Maria Groundwater Basin CSD = Community Services District 4.1.4 Developed Water The 2005 Stipulation states that “developed water” is “groundwater derived from human intervention” and states that this includes infiltration from the following sources: “Lopez Lake water, return flow, and recharge resulting from storm water percolation ponds.” Return flow results from deep percolation of water used in irrigation that is more than the requirement of the plant. Return flows have not been estimated recently but would be considered part of the groundwater basin inflow. In 2008, Arroyo Grande, Grover Beach, and Pismo Beach prepared stormwater management plans. To control stormwater runoff and to increase groundwater recharge, each city now requires that new development construct onsite retention or detention ponds. As these new ponds or basins are constructed, the increase in groundwater recharge could result in recognition of substantial augmentation of basin yield and provision of recharge credits to one or more of the NCMA agencies (Todd, 2007). Thus, a re-evaluation of estimated stormwater recharge is warranted as new recharge facilities are installed and as additional information on flow rates, pond size, infiltration rates, and tributary watershed area becomes available. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 64 4.1.5 Other Supplies Arroyo Grande owns three water wells that are located outside the SMGB and pump groundwater from the Pismo Formation. Two of the wells are pumped by the City and used for municipal consumption; the third well is likely to be used in the future. There is no established allocation that limits the volume of groundwater that Arroyo Grande can pump from these wells, but for planning purposes the City assumes that they can pump up to 160 AFY for municipal use. The volume that Arroyo Grande pumps from these wells varies from year to year and is included in summary totals for urban water use, but the volume is not included in the summary totals for SMGB production. 4.1.6 Total Water Supply Availability The baseline, or full allocation, water supply available to the NCMA agencies is summarized in Table 8. The baseline water supplies include 100 percent Lopez Lake allocation, SMGB groundwater entitlements, agricultural credits, and 100 percent delivery of SWP allocations. This baseline water supply does not include Lopez Lake surplus or SWP carryover, because these supplies vary from year to year and are not always available. The category “Other Supplies” includes groundwater pumped from outside the NCMA boundaries (outside the SMGB). The baseline supply for the NCMA agencies totals 10,665 AFY. Table 8. Baseline (Full Entitlement) Available Urban Water Supplies (AFY) Agency Lopez Lake SWP Allocation (at 100%) Groundwater Entitlement Ag Credit Other Supplies Total City of Arroyo Grande 2,290 0 1,202 121 160 3,773 City of Grover Beach 800 0 1,198 209 0 2,207 City of Pismo Beach 892 1,140 700 0 0 2,732 Oceano CSD 303 750 900 0 0 1,953 Total 4,285 1,890 4,000 330 160 10,665 Notes AFY= acre-feet per year Ag = agriculture CSD = Community Services District SWP = State Water Project Table 9 summarizes the available water supply to the NCMA agencies in 2021, including Lopez Lake, Lopez Lake carryover (surplus) water, the 2021 SWP 5 percent Table A delivery schedule, and the available SWP carryover water. The total available water supply is a compilation of all components of each agency’s portfolio. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 65 Table 9. Available Urban Water Supply, 2021 Agency Lopez Lake Allocation Lopez Lake Surplus 2021 SWP Allocation with Drought Buffer (at 20% Delivery) 2021 SWP Carryover Groundwater Entitlement Ag Credit Other Supplies Total, 2021 Arroyo Grande 2,290 807 0 0 1,202 121 160 4,580 Grover Beach 800 282 0 0 1,198 209 0 2,489 Pismo Beach 892 314 119 1 1,059 2 700 0 0 3,084 1 Oceano CSD 303 107 75 1 990 2 900 0 0 2,060 1 Total 4,285 1,510 194 2,049 4,000 330 160 12,213 Notes All units in acre-feet (AF) 1 In years when the Table A SWP allocation, plus drought buffer, plus carryover exceed 1,240 AF for Pismo Beach and 750 AF for OCSD, the total contract guaranteed SWP supply is capped at 1,240 AF for Pismo Beach and 750 AF for OCSD. However, if excess water is available and there is capacity in the pipeline the SWP contracts between SLOFCWCD Zone 3 and each Agency do not prevent annual deliveries in excess of these cap volumes (personal communication with David Spiegel, SLOFCWCD, on February 3, 2022). 2 Based on personal communication with Wes Thomson, SLOFCWCD, on January 4, 2022. AF = acre-feet CSD = Community Services District SWP = State Water Project Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 66 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 67 4.2 Water Use Water use refers to the total amount of water used to satisfy the needs of all water user groups. In the NCMA, water use predominantly serves urban production and agricultural applied water; a relatively small component of rural domestic use, including small community water systems; and domestic, recreational, and agriculture- related businesses. 4.2.1 Agricultural Water Supply Requirements For the 2021 Annual Report, the applied irrigation demand estimations were updated using the 2015 Integrated Water Flow Model (IWFM) Demand Calculator (IDC). The IDC is a stand-alone program that simulates land surface and root zone flow processes, and, importantly for this report, the agricultural water supply requirements for each crop type. IDC applies user-specified soil, weather, and land-use data to estimate and track the soil moisture balances. More specifically, available water within the root zone is tracked for each of the crops to simulate when irrigation events take place based on crop requirements and cultural irrigation practices. The data used in the IDC program for NCMA along with their respective sources are described below. Data Used in the IDC  Land-use Information. The San Luis Obispo County Agricultural Commissioner’s Office compiles an annual estimate of irrigated acres in the County. A view displaying the irrigated agricultural lands within NCMA for 2021 is shown in Figure 25, on page 68. The 2021 survey indicates a total of 1,486 acres of irrigated agriculture in the NCMA consisting predominantly of rotational crops. Table 10 lists the crop types and acreages found in the NCMA that were used in the IDC program.  Climate Data. 2021 weather data from the SLOFCWCD rain gauge in Oceano and the CIMIS Nipomo Station were used for precipitation and data related to reference ET values, respectively. The data needed to calculate reference ET values include solar radiation, humidity, air temperature, and wind speed. Both weather stations are shown in Figure 6, on page 21.  ET Values by Crop Category. The DWR Consumptive Use Program (CUP) was used to estimate potential ET values based on specific annual climate data and crop type. The CUP used monthly climate data from the closest CIMIS station (Nipomo station) and includes crop coefficients to calculate ET values for the irrigated crop categories. ARROYOGRANDEGROVERBEACH PISMOBEACH OCEANO Arr oyoGrandeCreekPismoCreekMeado wCr e e k Los BerrosCreek GovernorEdmundGBrownCoastalBranchCaliforniaA queduct£¤101 Date: January 28, 2022 Data Sources: NCMA, ESRI, USGS, Maxar Imagery (2020) LEGEND Avocado Rotational Crops Strawberry All Other Features Highway Watercourse Northern Cities Management Area NCMA Agricultural Land 2021 FIGURE 25 Northern Cities Management AreaSan Luis Obispo County, California Document Path: Y:\0672_Northern_Cities_Management_Area\Source_Figures\008_2021_Annual_Report\Figure25_NCMA Agricultural Land_2021.mxd o 0 0.5 1 MilesP A C I F I C O C E A N 68 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 69 Assumptions used in the analysis include the following:  As the NCMA is located near the coast, agricultural practices are influenced significantly by the marine layer, a mass of air that may be of lower temperature and have higher humidity than air over inland areas. As seen in Figure 6, on page 21, the Nipomo CIMIS station used for climatological data in both the CUP and IDC is located farther inland than the easternmost boundary of NCMA and the recorded weather data does not fully account for the cooling and moisture effects of the marine layer.  Use of an unadjusted calculated ET value results in a higher ET value than is actually taking place in the NCMA. Studies24 have identified that ET values within the influence of the marine layer can be as much as 20 to 25 percent lower than ET values for the same crop located just outside of the marine layer influence. The distance the marine layer extends inland can vary from less than one-half mile to as much as 4 to 5 miles, depending on land topography. Low-lying areas have a higher frequency of marine layer coverage and for longer periods throughout the day.  The NCMA is considered a low-lying area with boundaries extending between 2 and 5 miles inland. Recognizing that not all the crops would be affected by the marine layer but accounting for the cooling influence over some of the area, monthly ET values calculated based on the CIMIS Nipomo Station data were adjusted lower by 12 percent25 and are shown in Table 10.  Soil Data. The Natural Resources Conservation Service Soil Survey Geographic Database was used to collect soil parameters in the NCMA for use in the IDC. The soil properties used include saturated hydraulic conductivity, porosity, and the runoff curve numbers. The field capacity and wilting points were developed on the basis of the described soil textures (i.e., sand, loam, sandy clay) and industry standards. The IDC relies on soil properties for estimating water storage, deep percolation, and runoff; all of which lead to a refined estimation of applied water. Table 10. NCMA Crop Acreages and Calculated Evapotranspiration, 2021 Crop Type Acreage 2021 Potential ET1 (AF/Acre) Rotational Crops 1,105 1.92 Strawberries 336 0.8 Avocados 45 2.0 Notes 1 See ET Values by Crop Category, in text section above. 2 Rotational crop ET is based on a rotation of two to three crops. ET = evapotranspiration AF = acre-feet Model Development and Computations The IDC is written in FORTRAN 2003 using an object-oriented programming approach. The program consists of three main components: (1) input data files, (2) output data files, and (3) the numerical engine that reads data from input files, computes applied water demands, routes water through the root zone, and exports the 24 Irrigation Training and Research Center <http://www.itrc.org/etdata/etmain.htm> (Cal Poly, 2019) provides typical-year (1997 Hydrology) ET values using various irrigation methods for Zone 3, the coastal outside marine layer; and Zone 1, the marine layer. The computed percentage reduction in ET to Zone 3 values range from 11 percent for rotational crops (small vegetables) to 19 percent for strawberries. 25 A single ET reduction value is used based on changing location and rotation of crop types relative to influence of marine layer. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 70 results to the output files. The flow terms used in the root zone routing are defined in Table 11 and shown in the graphic below the table. Drainage from ponded areas (Dr) was not applicable because there are no ponded crops in the NCMA; data related to generic soil moisture (G) were not available. Table 11. Flow Terms Used in Root Zone Routing for IDC Model Abbreviation Term Notes P Precipitation User Specified ET Evapotranspiration IDC Output G Generic source of moisture (i.e., fog, dew) Data Not Available Aw Applied water IDC Output Dr Outflow resulting from drainage of ponded areas (e.g., rice, refuges) Not Applicable RP Direct runoff IDC Output Rf Return flow User Specified (fraction of applied water) U Re-used portion of return flow User Specified (fraction of return flow) D Deep percolation IDC Output Notes Integrated Water Flow Model (IWFM) Demand Calculator (IDC) (DWR, 2016) Source: California DWR (2016). All extracted geospatial information was applied to a computational grid within the IDC framework to simulate the root zone moisture for 2021 in NCMA agricultural areas. The IDC provides the total water supply requirement for each crop category met through rainfall and applied irrigation water in agricultural areas based on user-defined parameters for crop evaporation and transpiration requirements, climate conditions, soil properties, and agricultural management practices. The sources for data related to crop demands (i.e., Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 71 potential ET), climate conditions, and soil properties are discussed above. The computations for actual crop ET (versus potential ET), applied water, and deep percolation are described below. The potential ET is the amount of water a given crop will consume through evaporation and/or transpiration under ideal conditions (i.e., fully irrigated 100 percent of the time). Fully irrigated conditions mean that the water required to meet all crop demands is available. Water is available to the crops when the soil moisture content within the root zone is between the field capacity and the wilting point. When the soil moisture is above the field capacity, some water will go to runoff and/or deep percolation; when the soil moisture is below the wilting point, it is contained in the smallest pore spaces within the root zone and considered unavailable to the crops. The difference between the field capacity and the wilting point is the total available water (TAW). In IDC, when the soil moisture is above one-half of the TAW, the crop ET will be equal to the potential ET. However, if the soil moisture is below one-half of the TAW, the plants will experience water stress and ET decreases linearly until it reaches zero at the wilting point. This method of simulating water stress is similar to the method described in Allen et al. (1998) to compute non-standard crop ET under water stress conditions. The IDC monitors the moisture content within the root zone and applies water by triggering an irrigation event when the calculated soil moisture is below a user-specified minimum allowable soil moisture requirement. For this application of the IDC, the minimum soil moisture requirement was set to trigger an irrigation event when the soil moisture fell below one-half the TAW to limit water stress in the crops. During an irrigation event, the soil moisture content in the root zone reaches field capacity. If precipitation occurs, soil moisture may increase above field capacity, generating deep percolation and potentially runoff, both depending on the quantity and temporal distribution of rainfall. Deep percolation is the vertical movement of water through the soil column flowing out of the root zone resulting in the potential for groundwater recharge. The IDC applies the van Genuchten-Mualem equation (Mualem, 1976; van Genuchten, 1985) to compute deep percolation using the user-defined saturated hydraulic conductivity and pore size distribution. Results The total agricultural water supply requirements for 2021 was estimated to be 2,457 AF, and the effective precipitation (i.e., rainwater used by the crop) was 426 AF. Figure 26, on page 72, illustrates the estimated crop water requirement in the NCMA as calculated by the IDC and displays the three identified crop types and their estimated monthly applied water. The rotational crops have the highest water supply requirements because they cover the greatest area (see Figure 25, on page 68) and have the greatest annual ET (Table 12). The estimated agricultural water supply requirement of 2,457 AF in 2021 is comparable to the estimated 2,308 AF in 2020. In 2014, the methodology of estimating agricultural water requirements was modified from an estimated applied rate based on hydrologic conditions to the IWFM IDC methodology described here. FIGURE 26. 2021 ESTIMATED AGRICULTURAL WATER DEMAND AND MONTHLY PRECIPITATION AT THE SLO NO. 795 GAUGE Northern Cities Management Area San Luis Obispo County, California 72 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 73 Table 12. IDC Model Results of Monthly Applied Water, 2021 Monthly Applied Water (AF) Annual Total (AF) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Rotational Crops -- -- -- 203 350 363 285 350 288 214 49 -- 2,101 Strawberries -- -- -- -- -- 49 50 83 68 49 -- -- 300 Avocados -- -- -- -- 4 13 10 10 9 7 -- 3 56 Total 0 0 0 203 354 426 345 443 365 270 49 3 2,457 Monthly Precipitation (inches) Annual Total (inches) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Precipitation 4.88 0.32 0.92 -- -- -- -- -- -- 1.6 0.28 5.16 13.16 Monthly Unit Water Demand (AF/Acre) Annual Total (AF/Acre) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Rotational Crops -- -- -- 0.18 0.32 0.33 0.26 0.32 0.26 0.19 0.04 -- 1.90 Strawberries -- -- -- -- -- 0.15 0.15 0.25 0.20 0.15 -- -- 0.89 Avocados -- -- -- -- 0.09 0.29 0.22 0.22 0.20 0.16 -- 0.07 1.25 Area Weighted Average 0.00 0.00 0.00 0.14 0.24 0.29 0.23 0.30 0.25 0.18 0.03 0.00 1.65 Notes AF = acre-feet AF/Acre = acre-feet per acre Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 74 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 75 4.2.2 Rural Use In the NCMA, rural water use refers to groundwater pumping not designated as urban use or agricultural irrigation applied water and includes small community water systems, individual domestic water systems, recreational uses, and agriculture-related business systems. Small community water systems using groundwater in the NCMA were identified initially through a review of a list of water purveyors compiled in the 2007 County IRWMP. These include the Halcyon Water System, Ken Mar Gardens, and Pacific Dunes RV Resort. The Halcyon Water System serves 35 homes in the community of Halcyon, and Ken Mar Gardens provides water supply to 48 mobile homes on South Halcyon Road. The Pacific Dunes RV Resort, with 215 RV sites, provides water supply to a largely transitory population and a nearby riding stable. In addition, an inspection of aerial photographs of rural areas within NCMA has identified about 25 homes and businesses that are served by private wells. Two mobile home communities, Grande Mobile and Halcyon Estates, are served by OCSD through the distribution system of Arroyo Grande. Therefore, the production summary of OCSD includes these two communities. Based on prior reports, it is assumed that the number of private wells is negligible within the service areas of the NCMA agencies. The Pismo Beach Golf Course uses an onsite water well for turf irrigation. The pumped water is not metered, and the golf course operators do not know the total water use. An estimate of water demand for the golf course is based on the irrigated acreage, sandy soils, near-ocean climate, and water duty factors from the U.S. Golf Association, Alliance for Water Efficiency, U.S. Golf Courses Organization of America, and several other sources. The estimated rural water demand is provided in Table 13. Table 13. Estimated Rural Water Production, 2021 Groundwater User No. of Units Estimated Water Production, AFY per Unit Estimated Annual Water Production, AF Notes Halcyon Water System 35 0.40 14 1 Ken Mar Gardens 48 -- 7 2 Pacific Dunes RV Resort 215 0.03 6 3 Pismo Beach Golf Course -- -- 45 4 Rural Users 25 0.40 10 1 Current Estimated Rural Production 82 Notes 1 Rural residential water use is assumed to include minor outdoor irrigation and is estimated at 0.4 AFY per unit. 2 Demand based on metered water usage. 3 Water use/unit assumes 50 percent annual occupancy and 0.06 AFY per occupied site. 4 Estimated golf course demand, based on estimated water duty factor, annual ET, and irrigated acreage. AF=acre feet AFY = acre-feet per year ET = evapotranspiration Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 76 4.2.3 Urban Production for Potable Use Urban water production for potable use is presented in Table 14 for each of the NCMA agencies from 2005 through 2021. These values reflect Lopez Lake deliveries, SWP deliveries, groundwater production data, and system losses, and represent all water used within the service areas of the four NCMA agencies. In the last 17 years, urban water production has ranged from 5,476 AF (2016) to 8,982 AF (2007). There has been an overall decline in urban production since 2007, although there have been slight increases since the low point in 2016. The long-term declining trend in production is likely attributed to the relatively slow economy from 2009 through 2012 and conservation activities implemented by the NCMA agencies in response to the recent historical drought. Since 2013, when urban production was 7,939 AF, urban production declined dramatically to 2016 to the lowest level in at least the past 20 years. Urban water production was 6,073 AF in 2021. Table 14. Historical Urban Water Production for Potable Use (Groundwater and Surface Water) Year Arroyo Grande Grover Beach Pismo Beach OCSD Total Urban Percentage of 2013 Production1 2005 3,460 2,082 2,142 931 8,615 — 2006 3,425 2,025 2,121 882 8,453 — 2007 3,690 2,087 2,261 944 8,982 — 2008 3,579 2,051 2,208 933 8,771 — 2009 3,315 1,941 2,039 885 8,180 — 2010 2,956 1,787 1,944 855 7,542 — 2011 2,922 1,787 1,912 852 7,473 — 2012 3,022 1,757 2,029 838 7,646 — 2013 3,111 1,792 2,148 888 7,939 — 2014 2,752 1,347 1,949 807 6,856 — 2015 2,239 1,265 1,736 703 5,943 75% 2016 1,948 1,210 1,646 672 5,476 69% 2017 2,194 1,248 1,700 718 5,860 74% 2018 2,212 1,221 1,720 725 5,878 74% 2019 2,139 1,193 1,648 680 5,660 71% 2020 2,317 1,289 1,777 743 6,126 77% 2021 2,307 1,277 1,771 718 6,073 76% Notes 1 On April 1, 2015, California Governor Jerry Brown issued an executive order (B29-2015) mandating statewide reductions in water use. The order directs the State Water Resources Control Board to implement mandatory water reductions in cities and towns across California to reduce water usage by 25 percent, compared to the amount used in 2013, through February 2016. All units in acre-feet (AF) — = not applicable AF = acre-feet OCSD = Oceano Community Services District 4.2.4 2021 Groundwater Pumpage Total SMGB groundwater production in the NCMA, including urban production, applied agricultural water requirements, and rural pumping, is shown in Table 15. Total estimated SMGB groundwater pumpage in the NCMA in 2021 was 3,344 AF, which represents an increase from 2020 (3,064 AF). Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 77 Table 15. NCMA Groundwater Pumpage from Santa Maria Groundwater Basin, 2021 (AF) Agency Groundwater Entitlement + Ag Conversion Credit (AF) 2021 Groundwater Use from SMGB (AF) Percent Pumped of Groundwater Entitlement Arroyo Grande 1,202 + 121 = 1,323 129 10% Grover Beach 1,198 + 209 = 1,407 482 34% Pismo Beach 700 63 9% Oceano CSD 900 85 9% Total Urban Groundwater Entitlement /Use 4,000 + 330 = 4,330 759 18% Agricultural Irrigation Applied Water 5,300 - 330 = 4,970 2,457 49% Nonpotable Irrigation by Arroyo Grande -- 46 -- Rural Water Users -- 82 -- Estimated Subsurface Outflow to Ocean (2001 Groundwater Management Agreement) 200 -- -- Total NCMA Groundwater Entitlement /Use 9,500 3,344 35% Notes AF = acre-feet Ag = agriculture CSD = Community Services District NCMA = Northern Cities Management Area The total estimated groundwater pumpage of 3,344 in 2021 represents about 35 percent of the calculated safe yield of 9,500 AFY for the NCMA portion of the SMGB. A graphical depiction of water uses by supply source for each NCMA agency since 2000 is presented as Figure 27, on page 78. The graphs depict changes in water supply availability and use over time, including the increased use of SWP water during the early years of the period when SWP Table A deliveries were greater. The increased dependence in 2017, 2018, 2019, and 2020 on Lopez Lake is illustrated in this graphic. With reduced access to Lopez Lake water in 2021, Oceano CSD and City of Pismo Beach utilized a greater percentage of SWP water in 2021 than in recent years. Although all four agencies pumped groundwater as part of their supply portfolios in 2021, groundwater pumped from the SMGB constituted a minor part of the overall water supply, an amount of 805 AF26 or 13 percent of overall urban use. 26 This total includes the 613 AF pumped by NCMA agencies and the 61 AF of non-potable irrigation production in Arroyo Grande. FIGURE 27. MUNICIPAL WATER USE BY SOURCE Northern Cities Management Area San Luis Obispo County, California Notes: AFY - Acre-feet per year SWP - California State Water Project 78 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 79 As shown in Figure 28, on page 80, groundwater pumpage reached a peak in 2007 and then declined in 2008, 2009, and 2010. From 2010 through 2013, pumpage increased slightly every year, but even so, overall groundwater use remained significantly lower than previous annual pumpage rates. From 2013 through the present, annual pumpage totals have been on a downward trend. In 2021, urban potable groundwater use was 759 AF, which is 18 percent of the 4,330 AF of combined urban groundwater entitlement and agricultural conversion credit. 4.2.5 Changes in Water Production Historical water use for urban uses, agricultural irrigation, and rural uses is shown in Table 16. Table 16. Historical Total Water Use (Groundwater and Surface Water, AF) Year Arroyo Grande Grover Beach Pismo Beach OCSD Total Urban Agricultural Irrigation1 Rural Water Total Use 2005 3,460 2,082 2,142 931 8,615 2,056 36 10,707 2006 3,425 2,025 2,121 882 8,453 2,056 36 10,545 2007 3,690 2,087 2,261 944 8,982 2,742 36 11,760 2008 3,579 2,051 2,208 933 8,771 2,742 36 11,549 2009 3,315 1,941 2,039 885 8,180 2,742 36 10,958 2010 2,956 1,787 1,944 855 7,542 2,056 38 9,636 2011 2,922 1,787 1,912 852 7,473 2,742 38 10,253 2012 3,022 1,757 2,029 838 7,646 2,742 41 10,429 2013 3,111 1,792 2,148 888 7,939 2,742 42 10,722 2014 2,752 1,347 1,949 807 6,855 2,955 38 9,848 2015 2,239 1,266 1,736 703 5,943 3,008 38 8,990 2016 1,948 1,210 1,646 672 5,476 2,551 81 8,108 2017 2,194 1,248 1,700 718 5,860 2,579 80 8,519 2018 2,212 1,221 1,720 725 5,878 2,713 81 8,672 2019 2,139 1,193 1,648 680 5,660 2,554 82 8,296 2020 2,317 1,289 1,777 743 6,126 2,369 82 8,577 2021 2,307 1,277 1,771 718 6,073 2,503 82 8,658 Notes 1 Irrigation applied water includes agricultural irrigation plus SMGB non-potable irrigation by Arroyo Grande. AF = acre-feet CSD = Community Services District FIGURE 28. TOTAL WATER USE (URBAN, RURAL, AGRICULTURAL) BY SOURCE Northern Cities Management Area San Luis Obispo County, California P:\Portland\672-Northern Cities Management Area\005-2018 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 26 NCMA Total Water Use by Source Notes: AFY - Acre-feet per year SWP - California State Water Project 80 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 81 In general, urban water production has ranged from 8,982 AF in 2007 (Table 16) to 5,476 AF in 2016. Total water use since 2007 has been on a general downward trend; this overall decline in water use may be attributed to conservation activities implemented by the NCMA agencies in response to the drought. In the agricultural irrigation category, agricultural acreage has remained fairly constant. Thus, annual applied water for agricultural irrigation varies mostly with weather conditions. Acknowledging the variability caused by weather conditions, agricultural irrigation applied water is not expected to change significantly given the relative stability of applied irrigation acreage and cropping patterns in the NCMA south of Arroyo Grande Creek. Changes in rural domestic pumping have not been significant. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 82 This page intentionally left blank for duplex printing. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 83 SECTION 5: Comparison of Water Supply and Water Production The Baseline Available Urban Water Supplies for each of the NCMA agencies is 10,625 AFY, assuming 100 percent delivery of SWP allocation and assuming no Lopez Lake surplus water or SWP carryover (Table 8). In 2021, because of the availability of Lopez Lake surplus water and SWP carryover water, the total available urban water supply was 12,211 AF (Table 9). As described in the 2001 Groundwater Management Agreement and affirmed in the 2002 Settlement Agreement, the calculated safe yield from the NCMA portion of the SMGB is 9,500 AFY (Tables 8 and 15). Because all agricultural irrigation water use is supplied by groundwater, the total available agricultural irrigation supply is a portion of the estimated safe yield; this portion was allocated as 5,300 AFY for agricultural and rural use. The agricultural conversion of 330 AFY reduces this allocation to 4,970 AFY. Of the estimated safe yield of 9,500 AFY, other than what is allocated for agricultural irrigation and rural use, the remaining 4,330 AFY is allocated for urban water use (4,330 AFY, including 4,000 AFY groundwater allocation plus 330 AFY in agricultural conversion credit) and an estimated 200 AFY for subsurface outflow to the ocean. In 2021, the total estimated NCMA water production was 8,658 AF (Table 17). The 2021 water production of each city and agency is shown by source in Table 17. Note that the production volumes described here are gross production (if pumped groundwater) and gross deliveries (if surface water deliveries) and equal net consumptive demand plus losses and return water. Table 17. Water Production by Source, 2021 (AF) Agency Lopez Lake State Water Project SMGB Groundwater Other Supplies1 Total Urban Area Arroyo Grande 2,158 0 129 20 2,307 Grover Beach 795 0 482 0 1,277 Pismo Beach 406 1,302 63 0 1,771 Oceano CSD 163 470 85 0 718 Urban Water Use Total 3,522 1,772 759 20 6,073 Non-Urban Area Agricultural Irrigation Applied Water 0 0 2,457 0 2,457 Rural Water Users 0 0 82 0 82 Non-potable Irrigation by Arroyo Grande 0 0 46 0 46 Total 3,522 1,772 3,344 20 8,658 Notes 1 Other Supplies includes groundwater pumped from outside the NCMA boundaries. AF = acre-feet CSD = Community Services District SMGB = Santa Maria Groundwater Basin Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 84 As shown in Table 17, water for urban use in 2021 was supplied to the NCMA from 3,522 AF of Lopez Lake water; 1,772 AF of SWP water; and 759 AF of groundwater. Arroyo Grande produced 20 AF from its Pismo Formation wells in 2021. Based on the calculated yield of the NCMA portion of the SMGB, the baseline, or full allocation, of total available supply for all uses is 15,595 AFY, which is the sum of 10,625 AFY for urban use plus the allocation for agricultural irrigation and rural area of 4,970 AFY. In 2021, factoring in the SWP delivery schedule and availability of SWP carryover water and Lopez Lake surplus, the total available supply for all uses was 12,211 AF (Table 9) compared with actual 2021 NCMA water use of 8,658 AF (Table 17). It must be noted, however, that this comparative review of available 2021 supply versus production must be viewed with caution because of the potential threats to the groundwater supply (see Section 6.1, below). As described earlier, the NCMA agencies pumped only 18 percent of their “available” groundwater entitlement. Even with such minimal utilization of groundwater resources, a significant decrease of groundwater in storage occurred in the NCMA portion of the SMGB. It is clear that the NCMA agencies could not have used their entire groundwater entitlement in 2021 without significantly lowering water elevations below current conditions and potentially seriously exacerbating the threat of seawater intrusion. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 85 SECTION 6: Threats to Water Supply Because the NCMA agencies depend on both local and imported water supplies, changes in either state-wide or local conditions can threaten the NCMA water supply. Water supply imported from other areas of the state may be threatened by state-wide drought, effects of climate change in the SWP source area, management and environmental protection issues in the Delta that affect the amount and reliability of SWP deliveries, and risk of seismic damage to the SWP delivery system. Local threats to the NCMA water supply similarly include extended drought and climate change that may affect the yield from Lopez Lake and reduced recharge to the NCMA. In addition, the NCMA is not hydrologically isolated from the NMMA and the rest of the SMGB, and water supply threats in the NMMA are a potential threat to the water supply sustainability of the NCMA. There is a potential impact from seawater intrusion if the groundwater system, including the entire SMGB, is not adequately monitored and managed. In particular, management of the SMGB may need to account for sea level rise and the relative change in groundwater gradient along the shoreline. 6.1 Threats to Local Groundwater Supply 6.1.1 Declining Water Levels Water levels in the NCMA portion of the SMGB exhibited an overall declining trend for many years but have started to recover since about 2016. Important factors for maintaining water levels are managing inflow and outflow to the aquifer.  Inflow: An important inflow component to the NCMA area is subsurface inflow into the aquifers that supply water wells serving the NCMA. Historically, subsurface inflow to the NCMA from the Nipomo Mesa along the southeast boundary of the NCMA has been an important component of groundwater recharge. This inflow is reduced from historical levels, as first recognized in 2008–2009, to “something approaching no subsurface flow” because of lower groundwater levels in the NMMA (NMMA 2nd Annual Report CY 2009, page 43) (NMMA, 2010). This condition continues, as described in all subsequent NMMA annual reports.  Outflow: A major outflow component is groundwater pumpage. Total SMGB groundwater pumping in the NCMA (urban, agricultural, and rural domestic) was 3,344 AF in 2021, which is 35 percent of the court- accepted 9,500 AF safe yield of the NCMA portion of the SMGB. Such minimal utilization of the groundwater resource resulted in only a minor gain of groundwater in storage in the aquifer and a relatively slight rise in water level elevations. However, it is clear that the NCMA agencies could not have used their entire groundwater entitlement in 2021 without significantly lowering water elevations below current conditions and potentially seriously exacerbating the threat of seawater intrusion. The serious drought from 2011 to 2015 resulted in a steady decline in groundwater in storage in the NCMA portion of the SMGB. The recent slight increase of groundwater in storage (despite groundwater pumping at only approximately one third of the safe yield, which seemingly should have resulted in significant increases in groundwater in storage) illustrates the impacts of the recent drought. However, it also illustrates the impacts of reduced subsurface inflow recharge from the east (Nipomo Mesa). This condition of a long-term decline in groundwater in storage in the NCMA, even though total pumping is currently 35 percent of the safe yield, will be exacerbated if the NCMA agencies are required to increase groundwater withdrawals because of a reduction or total loss in local surface water supplies or SWP deliveries. 6.1.2 Seawater Intrusion The NCMA is underlain by an accumulation of alluvial materials that slope gently offshore and extend for many miles under the ocean (DWR 1970, 1975). Coarser materials within the alluvial materials comprise aquifer Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 86 zones that receive freshwater recharge in areas above sea level. If sufficient outflow from the aquifer occurs, the dynamic interface between seawater and fresh water will be prevented from moving onshore. Sufficient differential pressure to maintain a net outflow is indicated by onshore groundwater elevations that are above mean sea level and establish a seaward gradient to maintain that outflow. The 2008 NCMA Annual Report documented that a portion of the aquifer underlying the NCMA exhibited water surface elevations below sea level (NCMA, 2008). Hydrographs for NCMA sentry wells and the Deep Well Index (Figures 11 through 15, on pages 32 through 38) show that coastal groundwater elevations were at relatively low levels for as long as 2 years during that time. Such sustained low levels had not occurred previously in the historical record and reflected the impact of drought on groundwater levels. The low coastal groundwater levels indicated a potential for seawater intrusion. Elevated concentrations of TDS, chloride, and sodium were observed in wells 30N03 and 30N02 beginning in May 2009, indicating potential seawater intrusion (Figure 29, on page 87, and Figure 30, on page 88). OCSD MW-Blue also showed elevated concentrations of TDS and chlorides, but a concurrent decline in sodium (Figure 30, on page 88). Concentrations of TDS, chloride, and sodium recovered to historical levels in wells 30N03 and 30N02 (one of the sentry wells comprising the Deep Well Index) by April 2010. Comparing well 30N02 to the other Deep Well Index wells, the other Deep Well Index wells showed no elevated concentrations during the same period. However, comparing well 30N02 to wells with similar screen elevations (Figure 4, on page 15), wells 36L01 (approximately 12,000 feet south of well 30N02) and the OCSD MW-Blue well, approximately 3,300 feet east-southeast of well 30N02, suggested that seawater intrusion perhaps progressed eastward as far as the OCSD MW-Blue well, but not as far south as well 36L01 (Figure 30, on page 88). While the TDS and chloride concentrations were elevated from August 2009 to July 2011 in the OCSD MW-Blue well, the sodium concentrations remained within historical levels. During the same period, TDS, chloride, and sodium concentrations remained relatively stable in well 36L01. During 2021, there were no indications of seawater intrusion. FIGURE 29. HISTORICAL TDS, CHLORIDE AND SODIUM, INDEX WELLS AND 30N03 Northern Cities Management Area San Luis Obispo County, California 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 0 500 1,000 1,500 2,000 2,500 TDS, mg/L20 40 60 80 100 120 140 160 180 200 Chloride, mg/L0 40 80 120 160 200 240 280 Sodium, mg/LP:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 29 NCMA TDS, Cl and Sodium Index Wells and 30N03.grf 30N02 Chloride >600 mg/l in 2009 Notes: TDS - total dissolved solids mg/L - milligrams per liter 87 FIGURE 30. HISTORICAL TDS, CHLORIDE AND SODIUM, WELLS 30N02, MW-BLUE AND 36L01 Northern Cities Management Area San Luis Obispo County, California 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 0 500 1,000 1,500 2,000 2,500 TDS, mg/L20 40 60 80 100 120 140 160 180 200 Chloride, mg/L0 40 80 120 160 200 240 280 Sodium, mg/LWell 30N02 (Paso Robles Formation) Well 31H11 (Blue; Paso Robles Formation) Well 36L01 (Paso Robles Formation) P:\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Figures\Parts Fig 30 NCMA TDS, Cl and Sodium Wells 30N02 MW-Blue and 36L01_v2.grf Notes: TDS - total dissolved solids mg/L - milligrams per liter 31H11 Chloride 1,000 mg/l in 2009 88 Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 89 Measures to Avoid Seawater Intrusion In recognition of the risk of seawater intrusion, the NCMA agencies have developed and implemented a water quality monitoring program for the sentry wells and OCSD observation wells. The NCMA agencies and SLOFCWCD have worked cooperatively toward the protection of the sentry wells as long-term monitoring sites. Several measures are employed by the NCMA agencies to reduce the potential for seawater intrusion. Specifically, the NCMA agencies have voluntarily reduced coastal groundwater pumping; decreased overall water use via conservation; and initiated plans, studies, and institutional arrangements to secure additional surface water supplies. As a result, each of the four major municipal water users in the NCMA reduced groundwater use between 25 and 95 percent during the past several years. In 2021, municipal groundwater use was 759 AF, which constitutes 18 percent of the urban users’ groundwater entitlement (including agricultural conversion credits) of the safe yield (Table 7). According to the DWR Bulletin 63-3 report (DWR, 1970) both the Paso Robles Formation aquifer and the lower confined portion of the Cienega Valley alluvial aquifer are recharged primarily from subsurface groundwater inflow from the east, where the overlying confining layers are thin to nonexistent (DWR, 1970). These recharge areas to the east include inland reaches of Arroyo Grande Valley and portions of Nipomo Mesa (DWR, 1970). Any action that results in reduced groundwater recharge, whether it is from drought or reduction of subsurface inflow from the north and east, reduces overall recharge to the groundwater basin, lowers the gradient (or head) of the groundwater near the shoreline, and reduces subsurface outflow to the ocean, thereby increasing the potential threat of seawater intrusion. Alternatively, any action that results in increased groundwater recharge lessens the threat of seawater intrusion. A major initiative that will provide significant protection to the threat of seawater intrusion is the development of Central Coast Blue. Central Coast Blue is a regional recycled water project that includes advanced treatment of water from the wastewater treatment plants of Pismo Beach and SSLOCSD and injection into the NCMA portion of the SMGB. Injection of the highly purified effluent will reduce the threat of seawater intrusion and improve water supply sustainability for the region. Tasks related to the development of the project that were performed prior to and throughout 2021 include preliminary design, test injection well and monitoring well siting, construction, and testing, funding pursuits appropriation, cost/benefit sharing analysis, supplemental geophysics investigation, additional groundwater modeling with the Phase 1C model, and environmental review (see additional detail in Section 1.7.2). In 2020 the Nipomo Community Services District (NCSD) asked the NCMA agencies for a letter in support of an appeal to the Santa Barbara County Board of Supervisors to remove the 3,000 AFY volume limitation in the NCSD waterline intertie license agreement. NCSD has designed and constructed a pipeline for the Nipomo Supplemental Water27 project (Supplemental Water Project) that is sized to accommodate the delivery of 6,200 AFY as provided for in the Stipulation and Judgment. It is NCSD’s contention that the 3,000 AFY limitation in the license agreement is arbitrary, serves no purpose, and is in violation of Santa Barbara County’s obligations under the Stipulation and Judgment to support, and not oppose, implementation of the Adjudication, including development of the Supplemental Water Project. Further, the limitation threatens the long-term sustainability of the entire Basin. Completion of the Supplemental Water Project is intended to reduce groundwater pumping, increase subsurface inflow from Nipomo Mesa to the NCMA, and help protect 27 As described in Section VI.A of the Stipulation; “The NCSD agrees to purchase and transmit to the [Nipomo Mesa Management Area] (NMMA) a minimum of 2,500 acre-feet of Nipomo Supplemental Water each Year. However, the NMMA Technical Group may require NCSD in any given Year to purchase and transmit to the NMMA an amount in excess of 2,500 acre-feet and up to the maximum amount of Nipomo Supplemental Water which the NCSD is entitled to receive under the MOU if the Technical Group concludes that such an amount is necessary to protect or sustain Groundwater supplies in the NMMA.”. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 90 the groundwater resource from seawater intrusion. The NCMA agencies supplied the requested letter of support to NCSD on February 19, 2021. 6.2 Threats to State Water Project Supply Both extended drought and long-term reduction in snowpack from climate change can affect SWP deliveries. Above-average precipitation in 2016, 2017, and 2019 have resulted in a modest reprieve from drought conditions locally. However, the storage capacity levels of the state’s two largest reservoirs, Lake Shasta and Lake Oroville, were 45 and 35 percent capacity, respectively, as of the start of 2021, both significantly reduced from the previous year. Leading into 2022, rainfall during the last 8 months of 2021 resulted in 7.04 inches of rain, with over five inches of this total falling in December. The initial allocation announcement by DWR, announced on December 1, 2021, informed SWP contractors that their 2022 allocation would be 0 percent of requests for deliveries, satisfying only minimum unmet water demands to meet domestic supply, fire protection, and sanitation needs (referred to as “health and safety” needs)23. However, on January 20, 2022, the SWP allocation was increased to 15 percent, following above average precipitation in December 2021. As the winter rainfall season progresses, the allocations often increase by March or April. The last 100 percent allocation—difficult to achieve even in wet years largely because of Delta pumping restrictions to protect threatened and endangered fish species—occurred in 2006. The immediate threat of allocation reductions to Pismo Beach and OCSD, the only SWP subcontractors in the NCMA, has not significantly materialized during the past several years. The SLOFCWCD’s large amount of unsubscribed Table A allocation provides a buffer, in addition to the agency’s drought buffer, so that contracted volumes to SWP subcontractors, such as the OCSD and Pismo Beach, still may be provided in full. However, the SWP supply has the potential to be affected by drought as well as environmental issues, particularly involving the Delta smelt. 6.3 Threats to Lopez Lake Water Supply Extended drought conditions in recent years have contributed to record low water levels in Lopez Lake; the impacts of climate change may affect future precipitation amounts in the Lopez Creek watershed. As discussed in Section 4.1.1, the Zone 3 agencies developed and implemented the LRRP in response to reduced water in storage in the lake. The LRRP is intended to reduce municipal diversions and downstream releases as water levels drop to preserve water within the reservoir for an extended drought. Despite above-average precipitation in 2016, 2017, and 2019 the LRRP has been reactivated in 2021 in response to declining storage in the reservoir. Water from Lopez Lake may be significantly reduced or unavailable to the Zone 3 agencies in the event of prolonged future drought. Without access to water from Lopez Lake, the NCMA agencies and local agriculture stakeholders may be forced to rely more heavily on their groundwater supplies and increase pumping during extended drought conditions, which could result in lowering water levels in the aquifer and an increased threat from seawater intrusion. Moreover, a reduction in downstream releases from the reservoir, as mandated by the LRRP, likely will lead to reduced recharge to the NCMA portion of the SMGB and further contribute to declining groundwater levels. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 91 SECTION 7: Management Activities The NCMA and overlying private well users have actively managed surface water and groundwater resources in the area for more than 40 years. Management objectives and responsibilities were first established in the 1983 Gentlemen’s Agreement, recognized in the 2001 Groundwater Management Agreement, and affirmed in the 2002 Settlement Agreement. The responsibility and authority of the Northern Parties for NCMA groundwater management was formally established through the 2002 Settlement Agreement, 2005 Stipulation, and 2008 Judgment. Throughout the long history of collaborative management, which was formalized through the Agreement, Stipulation, and Judgment, the overall management goal for the NCMA agencies is to preserve the long-term integrity of water supplies in the NCMA portion of the SMGB. 7.1 Strategic Plan 7.1.1 Purpose and Background An NCMA Strategic Plan was first developed in 2014 to provide the NCMA TG with a mission statement to guide future initiatives, provide a framework for identifying and communicating water resource planning goals and objectives, and formalize a 10-year work plan for implementation of those efforts. Several key objectives were identified related to enhancing water supply reliability, improving water resource management, and increasing effective public outreach. Implementation of some of these efforts continued throughout 2021. Work began in 2019 to update the 2014 NCMA Strategic Plan. The Strategic Plan was developed over a series of strategic planning sessions and NCMA TG meetings and culminated with the publication of the Strategic Plan for the NCMA TG in March 2020. The purpose of the Strategic Plan is to provide the NCMA TG with the following:  A mission statement to guide future initiatives  A framework for communicating water resource goals  A formalized work plan for the next 10 years 7.1.2 Mission Statement Through the strategic planning process, the NCMA TG developed the following mission statement to guide ongoing initiatives and plan implementation and capture the requirements outlined in the 1983 Gentlemen’s Agreement, 2005 Stipulation, and the 2008 Judgment: Preserve and enhance the sustainability of water supplies for the Northern Cities Area by:  Enhancing supply reliability  Protecting water quality  Maintaining cost-effective water supplies  Advancing the legacy of cooperative water resources management  Promoting conjunctive use 7.1.3 Objectives of the NCMA TG Through the 2020 strategic planning process, the NCMA TG identified several key objectives to guide future efforts. These objectives include the following: Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 92 A. Enhance Water Supply Reliability  Develop coordinated response plan for saltwater intrusion and other supply emergencies  Support implementation of Central Coast Blue  Prepare the Northern Cities for prolonged drought conditions  Analyze impacts of pumping on the groundwater basin  Improve protection against threats to groundwater sustainability B. Improve Water Resource Management  Improve management/conjunctive use of water resources  Improve coordination between technical/legal/managerial initiatives  Abide by the legal/regulatory groundwater management requirements  Increase understanding of current and historical groundwater conditions to inform water resources initiatives C. Increase Effective Outreach  Engage agriculture stakeholders  Improve cooperation, coordination, and information sharing with local and regional agencies to further the objectives of the NCMA agencies  Reinforce the role of the NCMA TG as the recognized technical expert for water resources within the Northern Cities Management Area  Increase communication with City Councils and the Board of Directors  Maintain equity among all NCMA agencies 7.1.4 Strategic Initiatives and Implementation Plan Fifteen key strategies were identified by the TG for improving the sustainability of the water resource. Strategic initiatives were then developed for each key strategy, and an extensive screening and objective ranking process was applied. Utilizing the ranked and grouped strategic initiatives, the NCMA TG developed an implementation plan for the key strategies. The implementation plan includes a ranking for each initiative, the key participants, the required actions, an estimated budget, and an implementation time frame. The implementation time frame incorporates three periods: a current designation that refers to initiatives that the NCMA plans to complete within 1 year, a short- term designation that refers to initiatives that could be completed within 5 years, and a long-term designation that refers to initiatives that are anticipated to take longer than 5 years to implement. 7.2 Management Objectives In addition to the Strategic Plan, the NCMA TG has, over the years, established eight basic Water Management Objectives for ongoing NCMA groundwater management. Many of these objectives were incorporated into the Strategic Plan but are repeated here because they form the framework to long-term strategies and objectives to effectively manage the groundwater resource. The management objectives include the following: 1. Share Groundwater Resources and Manage Pumping 2. Enhance Management of NCMA Groundwater 3. Monitor Supply and Demand and Share Information 4. Manage Groundwater Levels and Prevent Seawater Intrusion Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 93 5. Protect Groundwater Quality 6. Manage Cooperatively 7. Encourage Water Conservation 8. Evaluate Alternative Sources of Supply Each of these objectives is discussed in the following sections. Under each objective, the NCMA TG has identified strategies to meet the objectives. These strategies are listed and then discussed under each of the eight objectives listed below. Other potential objectives are outlined in the final section. 7.2.1 Share Groundwater Resources and Manage Pumping Strategies:  Continued reduction of groundwater pumping; maintain pumping below safe yield.  Coordinated delivery of Lopez Lake water to the maximum amount available.  Continue to import SWP supplies to OCSD and Pismo Beach.  Maintain surface water delivery infrastructure to maximize capacity.  Utilize Lopez Lake to store additional SWP water within San Luis Obispo County.  Modify Zone 3 agency contracts to incorporate storage provisions in the contract. Discussion: Maintain Groundwater Pumping Below Accepted Basin Yield A longstanding objective of water users in the NCMA has been to cooperatively share and manage groundwater resources. In 1983, the Northern Parties mutually agreed on an initial safe yield estimate and an entitlement of pumping between the urban users and agricultural irrigation users of 57 percent and 43 percent, respectively (see Section 4.1). In this agreement, the NCMA agencies also established pumping entitlements among themselves (Section 4.1.3). Subsequently, the 2001 Groundwater Management Agreement included provisions to account for changes such as agricultural land conversions. The agreements provide that any change in the accepted safe yield based on ongoing assessments would be shared on a pro rata basis. Pursuant to the 2005 Stipulation, the NCMA agencies conducted a water balance study to update the safe yield estimate (Todd, 2007). As a result, the NCMA agencies agreed to maintain the existing pumping entitlement among the urban users and established a consistent methodology to address agricultural land use conversion. Maximize Delivery of Lopez Lake Water and Continue Importing State Water Project Water In addition to cooperatively sharing and managing groundwater resources, the NCMA agencies have coordinated delivery of water from Lopez Lake. At the same time, Pismo Beach and OCSD have continued to import SWP water. Both actions maximize use of available surface water supplies. In 2016, in response to the ongoing drought at that time and the threat of diminishing water supplies, Arroyo Grande approved a measure authorizing the purchase of SWP water from the SLOFCWCD’s excess entitlement on a temporary basis and only during a declared local water emergency. That condition was not reached in 2017 nor subsequent years, and Arroyo Grande has not purchased SWP water to date. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 94 Modify Zone 3 Agency Contracts An initiative to modify the Zone 3 agency contracts to incorporate storage provisions was started in late 2019 and continued throughout 2020 and 2021. By the end of 2020, the conceptual contract amendments were developed, reservoir modeling was completed, and updated contract language had been developed and reviewed by the Zone 3 Technical Advisory Committee (TAC). In 2021, a California Environmental Quality Act review was initiated to evaluate potential impacts of the proposed amendments. The administrative draft of the environmental review was presented to the Zone 3 TAC in 2021, but no public version of the document has yet been made available. Headed into 2022, the proposed Zone 3 contract changes remain a high priority for the NCMA agencies. The proposed contract language changes allow for the following:  Allow for year-over-year individual agency storage  Account for evaporation losses of stored water  Allow for the reduction of entitlements or to utilize stored water to meet downstream release requirements  Develop mechanisms to address the condition when the Zone 3 agencies do not have water to contribute to downstream release obligations  Clarify Lopez Lake water turnout delivery capacity limitations  Remove antiquated language from the contract that is no longer relevant  Allow for exchanges of Lopez Lake water with SWP water during times when there is a curtailment of delivery of Lopez Lake water due to maintenance projects The initiative to modify the contract language will provide each agency the ability to store water for future drought, improve flexibility of multi-year water supply planning, and provide an incentive for agencies to preserve water in the reservoir. 7.2.2 Enhance Management of NCMA Groundwater Strategies:  Develop a groundwater model for the NCMA/NMMA or the entire SMGB.  Coordinate with the County and NMMA to develop new monitoring well(s) in key locations within the SMGB.  Develop a Salt and Nutrient Management Plan (SNMP) for the NCMA/NMMA.  Develop and implement a framework for groundwater storage/conjunctive use, including return flows.  Update the 2001 Management Agreement. Discussion: The NCMA agencies participated in the oversight of the performance of the SMGB characterization study (Fugro, 2015) that was finalized with the distribution of the complete data sets in March 2016. The project was conducted as part of the County IRWMP 2014 update, in part to prepare for and to provide the foundational data for development of a numerical groundwater flow model and preparation of a basin-wide SNMP. To date, the SNMP has not been initiated, but the groundwater flow modeling work has been completed through Phase 1B, as described below. This groundwater flow model is associated with Central Coast Blue, a recycled water project formerly known as the Regional Groundwater Sustainability Project. the Central Coast Blue Partner Agencies to construct an ATF to produce APW to augment its water supply through injection to recharge the aquifer and develop a seawater intrusion barrier to improve water supply reliability for the area. As part of Central Coast Blue planning and technical studies, a localized groundwater flow model (the Phase 1A model) was developed for the northern portion of the NCMA that evaluated the concept of injecting APW Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 95 into the aquifer to increase recharge, improve water supply reliability, and help prevent future occurrences of seawater intrusion. Based on the results of the Phase 1A model and through funding by SSLOCSD Supplemental Environmental Program, work was initiated in 2017 for development of the Phase 1B groundwater flow model. The model domain of the Phase 1B model covers the entire NCMA, NMMA, and the portion of the SMVMA north of the Santa Maria River. The purpose of the Phase 1B model and the subsequently refined Phase 1C model (see Section 1.7.3) is to evaluate additional groundwater injection and extraction scenarios to further support Central Coast Blue. The Phase 1C model, developed in 2021, is being utilized to identify the locations of the proposed injection wells, quantify the amount of water that can be injected, evaluate strategies for preventing seawater intrusion, and develop estimates of the overall yield that the Central Coast Blue stakeholders will be able to receive from the project. The Phase 1C model will also be a tool for the NCMA agencies to further evaluate basin yield and basin management initiatives. As part of the SLOFCWCD’s SMGB characterization study (Fugro, 2015), continuous monitoring transducers were installed in 2015 in coastal sentry wells 36L01 and 36L02 (which are part of the NCMA monitoring program) and in wells 11N/36W-12C01 and 11N/36W-12C02 (located in the NMMA and monitored by the County and by NMMA). As a result, continuous water level and field-parameter water quality data were collected from these wells throughout 2021. Throughout 2021, the TG discussed various components and approaches to updating the 2001 Management Agreement. These discussions will continue in 2022. The monthly NCMA TG meetings provide for collaborative development of joint budget proposals for studies and plans and shared water resources. In addition, the monthly meetings provide a forum for discussing the data collected as part of the quarterly monitoring reports. 7.2.3 Monitor Supply and Demand and Share Information Strategies:  Develop a Water Supply, Production, and Delivery Plan (WSPDP).  In conjunction with and through the umbrella of the Zone 3 agencies and SLOFCWCD, continue efforts to evaluate potential drought emergency options and implement drought emergency actions.  Develop a coordinated Water Shortage Contingency Plan to respond to a severe water shortage condition in the NCMA.  Share groundwater pumping data at monthly NCMA TG meetings.  Evaluate future water demands through comparison with the following UWMP projections:  Arroyo Grande 2015 UWMP28 (WSC, 2017)  Pismo Beach 2020 UWMP (WSC, 2021)  Grover Beach 2020 UWMP (MKN, 2021)  OCSD is not required to prepare a UWMP because the community population does not meet the minimum requirement threshold. 28 Revised and updated, January 2017; 2020 UWMP update is in process. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 96 Discussion: Water Supply, Production and Delivery Plan In January 2015, the NCMA agencies developed a Water Supply, Production, and Delivery Plan (WSPDP) that applies the strategic objectives to the various supplies available to the area. The NCMA area receives supplies from Lopez Lake, the SWP, and the SMGB. The purpose of the WSPDP is to provide the NCMA agencies with a delivery plan that optimizes use of existing infrastructure and minimizes groundwater pumping from the SMGB. The plan includes the development of a water supply and delivery modeling tool for the NCMA agencies, evaluation of three delivery scenarios, and development of recommendations for water delivery. The WSPDP made recommendations that were implemented or subject to further study. Components of the WSPDP and the various recommendations incorporated into the Plan are summarized throughout Section 7. The recommendations of the WSPDP reinforce the ongoing management efforts by the NCMA and provide potential projects to improve water supply reliability and protect water quality during periods of drought. Ongoing work to implement the recommendations includes evaluation of additional delivery facilities to add operational flexibility to ensure optimum use of all supplies. Implementing the WSPDP has allowed the NCMA to minimize the use of groundwater thereby protecting against seawater intrusion while meeting the needs of its customers and other water users. The WSPDP now provides a framework for the NCMA to manage the groundwater resource actively and effectively, particularly in years of below-normal rainfall and below “normal” SWP delivery schedules. The WSPDP outlines a strategy to provide sufficient supplies to NCMA water users in instances of reduced SWP delivery. Specifically, in 2021, municipal groundwater pumpage totaled 759 AF. The pumped volume of 759 AF constitutes approximately 18 percent of the volume allotted to the agencies through the 1983 Gentlemen’s Agreement and 2005 Stipulation. Seawater intrusion is the most important potential adverse impact for the NCMA agencies to consider in the efforts to effectively manage the aquifer. Seawater intrusion, a concern since the 1960s, would degrade the quality of water in the aquifer and potentially render portions of the SMGB unsuitable for groundwater production (DWR, 1970). A Deep Well Index of the three primary deep sentry wells of 7.5 feet above sea level has been recognized as the threshold, above which it is thought that there is sufficient fresh water (groundwater) outflow to prevent seawater intrusion. From late 2009 to April 2013, the NCMA agencies’ management of groundwater levels and groundwater pumpage maintained the Deep Well Index above the 7.5-foot level. Then in mid-to-late 2013, 2014, and 2015, groundwater levels dropped below the target index value on several occasions and often remained below the target elevation for several months on end. In 2015, the groundwater levels were generally between 4 and 7 feet below the 7.5-foot target index level. Groundwater elevations dropped below the Deep Well Index threshold several months in 2016, but this occurred for a shorter duration than in 2015, with groundwater elevations reaching less than 2 feet below the target value. In 2017, the Deep Well Index remained above the 7.5-foot threshold value the entire year for the first time since 2012 (except for a very brief period between August 18 and August 29, 2017, when the agencies were forced to increase groundwater pumping due to a maintenance shutdown of the Lopez Lake water supply). In subsequent years, the Deep Well Index has generally started the year above the trigger value, then dropped below the 7.5-foot threshold at some point during the summer or fall and then risen again above the threshold value where it remained through the end of the year (Figure 12, on page 35). Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 97 In 2021, the Deep Well Index started the year above the trigger value with an index value of more than 9 feet in January. It continued to rise, reached a high of nearly 10 feet during February, and then began to decline. The index value dropped below the 7.5-foot trigger value by July and continued to fall to a low point of just over 6 feet in late October. A slow recovery occurred through November, followed by a more rapid recovery in December, coincident with the above average monthly rainfall received in December. The index value continued to rise throughout the end of the year and finished 2021 at about 9 feet above sea level (Figure 12, on page 35). Zone 3 Extended Drought Emergency Options Management activities have become more closely coordinated among the NCMA agencies as a result of the 2011 through 2015 drought. In particular, the implementation of the LRRP limited municipal diversions and downstream releases from Lopez Lake to ensure that water is available for future potentially dry years. In addition, the Zone 3 agencies (which include the NCMA agencies) initiated a long-term drought planning effort. The planning effort is intended to prepare water supplies for periods of extended drought conditions. The NCMA agencies, in conjunction with the other Zone 3 agencies and SLOFCWCD, continue efforts to evaluate potential drought emergency options and implement drought emergency actions. This initiative includes identification, evaluation, and ranking of potential options available to Zone 3 to improve the reliability of its water supplies. The Zone 3 agencies and the County have pledged to work collaboratively to continue to evaluate and implement emergency water supply reliability options as required in conditions of extended drought. In 2019, the County Board of Supervisors, in coordination with the NCMA agencies and other Zone 3 partners, approved a professional services contract for the 2019–2020 Winter Season Cloud Seeding Program for the Lopez Lake Watershed. The program is conceived to be a 3-year program. On November 17, 2020, the County Board of Supervisors approved the Zone 3 Cloud Seeding Program for 2020–2021. For the 2021 winter season, cloud seeding operations were conducted to enhance precipitation in the Lopez Lake drainage. The Cloud Seeding Program contractor recommended a transition to a “ground-only” seeding program for the 2021 winter season to increase the overall program efficiency. The operational period ran from December 1, 2020, to April 15, 2021, during which seeding opportunities occurred on 4 storm events. Additional potential drought emergency options that the Zone 3 agencies have evaluated in the past few years include the following:  State Water Project. Maximize importation of SLOFCWCD SWP supplies, including subcontractor supplies and the large amount of unsubscribed Table A allocation.  Surplus Nacimiento Water Project (NWP) Water. Investigate transfer/exchange opportunities to obtain surplus NWP water for the Zone 3 agencies (i.e., exchange agreements with the City of San Luis Obispo and the Chorro Valley pipeline SWP subcontractors).  Water Market Purchases. Investigate opportunities to obtain additional imported water and deliver it to the Zone 3 agencies through the SWP infrastructure (e.g., exchange agreements with San Joaquin/Sacramento Valley farmers, water broker consultation, groundwater banking exchange agreements, and others).  Morro Bay Desalination Plant Exchanges. Investigate opportunities to obtain SWP water from Morro Bay.  Land Fallowing. Evaluate potential agreements with local agriculture representatives to offer financial incentives to fallow land within the Arroyo Grande and Cienega Valleys to make that irrigation water available for municipal use. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 98  Enhanced Conservation. Evaluate opportunities for enhanced water conservation by the Zone 3 agencies (e.g., water rationing, no outdoor watering, agriculture water restrictions) to preserve additional water.  Nacimiento/California Men’s Colony Intertie. Complete design of a pipeline that would connect the NWP pipeline to the California Men’s Colony (CMC) Water Treatment Plant. Investigate opportunities for Zone 3 agencies to purchase NWP water and use exchange agreements and existing infrastructure to deliver additional water to Zone 3 through the Coastal Branch pipeline. Urban Water Management Plans Arroyo Grande is in the process of updating their UWMP. Pismo Beach and Grover Beach have each completed their 2020 UWMPs in June and December 2021, respectively. OCSD is not required to prepare an UWMP because the community population does not meet the minimum requirement threshold; however, many of the aspects of a UWMP are addressed through OCSD’s participation in the NCMA planning process. New to the 2020 UWMP, water suppliers are required to prepare a standalone Water Shortage Contingency Plan (WSCP) that can be updated independently of the UWMP. A WSCP documents a supplier's plans to manage and mitigate an actual water shortage condition, should one occur because of drought or other impacts on water supplies. Coordinated and Shared Data Regular monitoring of activities that affect the groundwater basin and sharing of that information have occurred for many years. The monitoring efforts include gathering data on hydrologic conditions, water supply and demand, and groundwater pumping, levels, and quality. The current monitoring program is managed by the NCMA agencies in accordance with the 2005 Stipulation and the 2008 Judgment, guided by the July 2008 Monitoring Program for the NCMA. The monitoring data and a summary of groundwater management activities are summarized in the annual reports. Arroyo Grande, Grover Beach, and Pismo Beach have each evaluated their future water demands as part of their respective UWMPs. The NCMA shares information with the two other management areas (NMMA and SMVMA) through data exchange throughout the annual report preparation cycle. 7.2.4 Manage Groundwater Levels and Prevent Seawater Intrusion Strategies:  Use stormwater ponds to capture stormwater runoff and recharge the groundwater basin.  Install transducers in key monitoring wells to provide continuous groundwater elevation data. The following wells have transducers:  24B03 (North Beach Campground)  30F03 (Highway 1)  30N02 (Pier Avenue)  36L01 (Oceano Dunes)  36L02 (Oceano Dunes)  32C03 (County Monitoring Well No. 3)  Collect and evaluate daily municipal pumping data to determine the impact on local groundwater elevation levels. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 99 Discussion: Prevention of seawater intrusion through the management of groundwater levels is essential to protect the shared resource. The NCMA agencies increase groundwater recharge with stormwater infiltration and closely monitoring groundwater levels and water quality in sentry wells along the coast. Arroyo Grande and Grover Beach each maintain stormwater retention ponds within their jurisdictions; the SLOFCWCD maintains the stormwater system, including retention ponds, in OCSD. These ponds collect stormwater runoff, allowing it to recharge the underlying aquifers. There are approximately 140 acres of detention ponds in Arroyo Grande and 48 acres of detention ponds in Grover Beach. The stormwater detention pond in OCSD is approximately one-half acre. Grover Beach modified its stormwater system in 2012 to direct additional flow into one of its recharge basins. The San Luis Obispo County Stormwater Resource Plan (Stormwater Resource Plan) (SLO Co., 2019) was submitted to the SWRCB for review on February 28, 2019; final approval of the plan was attained on February 25, 2020. The purpose of the Stormwater Resource Plan is to identify and prioritize stormwater and dry weather runoff capture projects in the County through detailed analyses of watershed conditions and processes, surface and groundwater resources, and the multiple benefits that can be achieved through stormwater-related capital projects and other programmatic actions (SLO Co., 2019). The Stormwater Resource Plan identifies four proposed projects within the NCMA, including the Pismo Preserve Roads Improvement Project, the Oceano Drainage Improvement Project (which was completed in 2020), South Halcyon Green/Complete Street, and a stormwater infiltration basins project. In 2019, Oceano CSD started design of the Oceano Stormwater Capture and Groundwater Recharge Project These proposed projects emphasize water supply augmentation, environmental restoration and other community benefits, including an estimated annual infiltration capacity of 26 AF and an instantaneous floodwater capture capacity of 3.37 AF (SLO Co., 2019). Although closely related to the objectives to manage pumping, monitor supply and demand, and share information, this objective to manage groundwater levels and prevent seawater intrusion also specifically recognizes the proximity of production wells to the coast and the threat of seawater intrusion. The NCMA agencies and SLOFCWCD have long cooperated in the monitoring of groundwater levels, including quarterly measurement by the NCMA of groundwater levels in sentry wells at the coast. Upon assuming responsibility for the coastal monitoring wells, the NCMA became aware of the need to upgrade the condition of the sentry wells. In July 2010 the wellheads (surface completions) at the four sentry monitoring well clusters in the NCMA were renovated (Todd, 2010). The renovations included raising the elevations of the top of each individual well casing by 2 to 3 feet and resurveying relative to the NAVD 88 standard in late September 2010 (Wallace Group, 2010). The individual well casings are now above the ground surface and protective locking steel risers enclose each cluster. As a result of this work, the sentry wells in the NCMA now are protected from surface contamination and tampering. Quarterly measurement of groundwater levels aids in assessing the risk of seawater intrusion along the coast. To enhance the data collection and assessment efforts, the NCMA installed transducers in four of the key sentry monitoring wells (24B03, 30F03, 30N02, and 24B01) to provide continuous groundwater levels at key locations (the transducer in the shallow completion 24B01 was later removed). By combining these data with the collection and evaluation of daily municipal pumping data, the NCMA is better able to determine the response of local groundwater levels to extractions and, therefore, can better manage the aquifer and NCMA portion of the SMGB. To gain insight into water level fluctuation and water quality variation in the area between the NCMA and NMMA, a continuous monitor was installed in County Monitoring Well #3 (32C03), which was constructed and is owned by the County as part of the County-wide groundwater monitoring network. Water level monitoring Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 100 was initiated in April 2012, when sensors were installed to document water level, temperature, and specific conductivity. In 2015, continuous monitoring sensors were installed in coastal monitoring wells 36L01 and 36L02 located in the Oceano Dunes. Data from the transducers in these wells now are collected on a quarterly basis along with the other sentry wells. Additional studies to enhance basin management efforts that have been discussed by the NCMA TG include the following:  Consider implementation of a monthly groundwater elevation data analysis of the sentry wells during periods when the Deep Well Index value is below the index target of 7.5 feet above sea level for an extended period. Given that the index value generally has remained steady because of reduced groundwater pumping, the NCMA has deferred the issue of monthly analysis.  Consider implementation of a monthly analysis of electrical conductivity data from the wells with downhole transducers during periods when the Deep Well Index value is below the index target of 7.5 feet to track potential water quality degradation (an enhanced monitoring schedule of County Monitoring Well No. 3 is not necessary because background water quality does not change or fluctuate significantly). If electrical conductivity data suggest water quality degradation, implement a monthly sampling and monitoring program. Given that the index value generally has remained steady because of reductions in groundwater pumping, the NCMA has deferred the issue of monthly analysis.  Assess the potential impacts on sentry well groundwater elevations from extended periods of increased groundwater pumping by conducting analytical modeling analyses to predict water level responses given certain pumping scenarios. These analyses may prove fruitful as scenarios unfold regarding decreased SWP deliveries or short-term emergency cuts to Lopez Lake deliveries. Utilization of the Phase 1C model may be used for this purpose in the future. 7.2.5 Protect Groundwater Quality Strategies:  Perform quarterly water quality monitoring at all sentry wells and County Well No. 3.  Gather continuous (every 4 hours) pressure (converts to depth to water), temperature, and electrical conductivity data from select monitoring wells to track water quality indicators for seawater intrusion.  Prepare an SNMP pursuant to state policy using the results of the SMGB characterization study (Fugro, 2015).  Construct the Central Coast Blue facility.  Support regional recycled water project planning through performance of a Recycled Water Facility Planning Study (RWFPS) by the SSLOCSD. The RWFPS was completed in 2017. Discussion: The objective to protect groundwater quality is closely linked with the objective for monitoring and data sharing. To meet this objective, all sources of water quality degradation, including the threat of seawater intrusion, need to be recognized. Water quality threats and possible degradation affect the integrity of the groundwater basin, potentially resulting in loss of use or the need for expensive water treatment processes. Sentry wells are monitored quarterly for water quality and data from other NCMA production wells are assessed annually. The monitoring program includes evaluation of potential contaminants in addition to those that might indicate Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 101 seawater intrusion. Temperature and electrical conductivity probes have been installed in six monitoring wells to provide continuous water quality tracking for early indication of seawater intrusion. The NCMA agencies participated in the oversight of the performance of the SMGB characterization study (Fugro, 2015). The project was conducted, in part, to prepare for and to provide the foundational data for preparation of a basinwide SNMP. To date, the SNMP has not been initiated. Investigations continued throughout 2021 for work associated with the Central Coast Blue project. These efforts continue to follow up on Pismo Beach’s RWFPS to investigate alternatives for constructing a recycled water system that will enable the NCMA agencies to beneficially use recycled water to augment their groundwater supply and provide a new, drought-proof source of water supply for the area. 7.2.6 Manage Cooperatively Strategies:  Improve outreach to the agricultural community by enhancing coordination with local growers.  Coordinate groundwater monitoring data sharing and annual report preparation with the NCMA, NMMA, and the SMVMA.  Improve interagency coordination among the NCMA agencies and include the County. Discussion: Since 1983, NCMA management has been based on cooperative efforts of the affected parties, including the NCMA agencies, private agricultural groundwater users, the County, the SLOFCWCD, and other local and state agencies. Specifically, the NCMA agencies have limited their pumping and, in cooperation with SLOFCWCD, invested in surface water supplies to reduce groundwater pumping to not exceed the safe yield of the NCMA portion of the SMGB. Other organizations participate as appropriate. Each year the NCMA TG hosts a meeting with agricultural representatives from throughout the NCMA to discuss the status of the basin, present the findings of the annual report, and develop collaborative strategies for protecting the groundwater resource. In addition to the efforts discussed in this 2021 Annual Report, cooperative management occurs through many other venues and forums, including communication by the NCMA agencies in their respective public meetings and participation in the WRAC. The NCMA agencies participated in preparation and adoption of the 2014 update of the County IRWMP. The IRWMP promotes integrated regional water management to ensure sustainable water uses, reliable water supplies, better water quality, environmental stewardship, efficient urban development, protection of agriculture, and a strong economy. The IRWMP integrates all the programs, plans, and projects within the region into water supply, water quality, ecosystem preservation and restoration, groundwater monitoring and management, and flood management programs. Since the 2008 Judgment, the NCMA has taken the lead in cooperative management of its management area. The NCMA TG met monthly (at a minimum) throughout 2021 and has been a willing and active participant in the SMGBMA technical subcommittee, which first met in 2009 (the SMGBMA technical subcommittee did not meet in 2021). The purpose of the SMGBMA technical subcommittee is to coordinate efforts such as enhanced monitoring of groundwater levels and improved sharing of data among the management areas. With the current threats to water supply in all management areas, greater communication, analytical collaboration, and data sharing are encouraged, especially between NCMA and NMMA. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 102 Actions initiated by NCMA in early 2016 resulted in increased discussion and collaboration between the NCMA and NMMA that is ongoing. The NCMA-NMMA Management Coordination Committee has met several times since 2017 to discuss items of mutual concern and develop strategies for addressing the concerns. Another area of increased mutual collaboration between the NCMA and NMMA was the formation of a technical team, consisting of representatives from the NCMA and NMMA, to collaboratively develop a single data set of water level data points to prepare a consistent set of semiannual water level contour maps for the NCMA and NMMA, so that the maps from each management area would represent a mutually agreed upon condition at the NCMA/NMMA boundary. This collaboration continued throughout 2021 through continued assessment and evaluation of the water level database, sharing of new data, and discussions of knowledge of hydrogeologic conditions gained. The result has been a series of groundwater elevation contour maps of both the NCMA and the NMMA that reflect water level conditions at the NCMA/NMMA boundary. A Modeling Subcommittee, composed of representatives from the NCMA and NMMA, was formed to discuss the development of a numerical groundwater flow model of the portion of the SMGB north of the Santa Maria River. When the Phase 1B groundwater flow model project was initiated in 2017, representatives from this subcommittee formed a technical review and advisory committee to provide input to the modeling consultant and monitor progress. An NMMA representative participated in the technical review and in an advisory capacity throughout the development of the Phase 1B model. The Modeling Subcommittee has not met since completion of the Phase 1B modeling project. 7.2.7 Encourage Water Conservation Strategies:  Share updated water conservation information.  Implement UWMPs. Discussion: Water conservation, or water use efficiency, is linked to the monitoring of supply and demand and the management of pumping. Water conservation reduces overall demand on all sources, including groundwater, and supports management objectives to manage groundwater levels and prevent seawater intrusion. In addition, water conservation is consistent with state policies seeking to achieve a 20 percent reduction in water use by the year 2020 (DWR et al., 2010). Water conservation activities in the NCMA are summarized in various documents produced by the NCMA agencies, including the 2020 UWMPs of Arroyo Grande (in progress), Pismo Beach (WSC, 2021), and Grover Beach (MKN, 2021). (OCSD is not required to prepare an UWMP.) In addition to ongoing water conservation efforts, the drought conditions that extended throughout 2016 led the NCMA agencies to increase their efforts to reduce water use. The statewide mandatory water conservation requirements (signed into law on April 1, 2015, by the governor [Executive Order B-29-15]) that enacted mandatory water conservation requirements because of statewide drought conditions and the historic low Sierra snowpack measurements were continued throughout 2016 and into early 2017. On April 7, 2017, the State of California lifted the drought emergency and mandated water use restrictions throughout the state. The water conservation measures instituted by each NCMA agency are summarized below. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 103 Arroyo Grande On April 7, 2017, the State of California took action to lift the drought emergency and mandated water use restrictions throughout the state. The action also eliminated the State’s mandate for Arroyo Grande to save 28 percent of its water use. In response, the Arroyo Grande City Council approved and adopted a resolution in May 2017, rescinding the Stage 1 Water Shortage Emergency in the City, which removes the temporary water use limitations that established individualized water budgets for all residential customers. During the State- mandated Stage 1 restrictions, Arroyo Grande’s water use reduction was, on average, 42 percent compared with 2013, thereby meeting and exceeding the state mandates. The City Council’s action in 2017 was based on a determination that there was no immediate or imminent threat to the City’s ability to meet the community’s water supply needs. However, all established mandatory water use restrictions remained in effect, including limitations on outdoor irrigation and continued adherence to four-day outdoor irrigation based on the property address. On October 12, 2021 Arroyo Grande City Council again declared a Stage 1 Water Shortage Emergency as a result of the ongoing severe drought conditions, low Lopez Lake levels and resulting reductions in deliveries of water from Lopez Lake. This action requires all customers to reduce water usage by a certain percentage compared to the same billing period in 2020, referred to as the baseline. Residential customers will be required to reduce consumption by a certain percentage based upon their billing tier: Tier 1 customers with bi-monthly usage of 0 – 9 units will not be required to reduce consumption but cannot increase usage above their assigned baseline; Tier 2 customers with bi-monthly usage of 10 – 18 units will be required to reduce consumption by 7 percent; and Tier 3 customers with bi-monthly usage of 19 units or more will need to reduce usage by 14 percent. This structure allows residents to choose how to utilize their water rather than mandate specifically how reductions are achieved. Commercial/Institutional customers with separate irrigation meter accounts will have to reduce water use by 25 percent. Mandatory water conservation measures that remain in place include the following:  Use of water that results in excessive gutter runoff is prohibited.  No water will be used for cleaning driveways, patios, parking lots, sidewalks, streets, or other such use except where necessary to protect the public health and safety.  Outdoor water use for washing vehicles shall be attended and have hand-controlled watering devices, typically including spring-loaded shutoff nozzles.  Outdoor irrigation is prohibited between 10 a.m. and 4 p.m.  Irrigation of private and public landscaping, turf areas, and gardens is permitted at even-numbered addresses only on Mondays and Thursdays, and at odd-numbered addresses only on Tuesdays and Fridays.  No irrigation of private and public landscaping, turf areas, and gardens is permitted on Wednesdays. Irrigation is permitted at all addresses on Saturdays and Sundays.  In all cases, customers are directed to use no more water than necessary to maintain landscaping.  Emptying and refilling swimming pools and commercial spas are prohibited except to prevent structural damage and/or to provide for the public health and safety.  Use of potable water for soil compaction or dust control purposes in construction activities is prohibited. To help manage the use of water, the City offers water conservation incentive programs designed to decrease overall water use. The conservation and incentive programs include the following: Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 104  Cash for Grass. This program reimburses residents $1 per square foot of turf removed with a minimum of 500 square feet of turf removed and a maximum of 5,000 square feet of turf removed. Turf must be replaced with drought-tolerant plans, permeable mulch or artificial turf. Applicants are required to remain in compliance with the program's terms and conditions for a five year period following the rebate.  Plumbing Retrofit Program. This program includes installation or adjustment of showerheads, toilets, faucet aerators, and pressure regulators for single-family and multi-family residential units constructed before 1992. This program has been in place since 2004 at an expense to the City of more than $1.55 million.  Water-Wise Landscaping Program. This program provides resources for designing and installing water- wise landscaping in San Luis Obispo County, selecting climate-appropriate plants, and irrigation and drainage improvements that will help residents improve their landscaping and protect the watershed.  Washing Machine Rebate. This program pays water customers a one-time rebate for the installation of a certified water-efficient washing machine.  Mandatory Plumbing Retrofit. Upon change of ownership of any residential property, the seller must retrofit the property’s plumbing fixtures to meet defined low-water-use criteria.  Water Conservation Hotline. Pismo Beach In 2014, Pismo Beach introduced the first-in-the-state waterless urinal mandate and a 0.5-gallon per minute (gpm) restroom aerator retrofit requirement. The components of this program include the following:  Waterless urinal retrofits. All existing urinals in the City were retrofitted to waterless urinals before February 14, 2016.  Faucet aerators. New residential restroom construction requires faucets that are fitted with aerators that emit no more than 0.5 gpm. Restroom faucets in all publicly accessible restrooms, including those in hotel rooms, lobbies and restrooms, restaurants, schools, commercial and retail buildings, public buildings, and similar publicly accessible restrooms were retrofitted to install aerators that emit no more than 0.5 gpm.  Sub-meters in new construction. All new multi-unit buildings, regardless of proposed use, were required to have a separate sub-meter capable of measuring the water use of every usable unit, separate common space, and landscaping that is expected to use at least 25 gallons of water per day on average for the course of a year, regardless of the overall size of the building. Buildings that have a separate water meter for each unit are exempt. Also in 2014, Pismo Beach adopted several Water Conservation Incentive Programs to help reduce water consumption and ensure reliable future water supply. On February 2, 2021, the Pismo Beach City Council updated the Water Conservation Incentive Programs list to include the following:  Cash for Grass. This program reimburses residents for each square foot of lawn removed (minimum 300 square feet) and replaced with drought-tolerant landscaping, which is required to have an automatic timer and drip or micro-spray irrigation.  Water-Wise Landscaping Program. This program provides resources for designing and installing water- wise landscaping in San Luis Obispo County, selecting climate-appropriate plants, and irrigation and drainage improvements that will help residents improve their landscaping and protect the watershed.  High Efficiency Toilet Rebate Program. This program provides a one-time rebate for each 3.5-gallon-per- flush or higher toilet replaced with a 1.28-gallon-per-flush or lower toilet.  Water Conservation Website. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 105 In January 2017, Pismo Beach adopted an updated schedule of development impact fees to include new recycled water fees for all new development, redevelopment, and additions to existing buildings that create additional dwelling units or additional non-residential floor area, to help fund the cost of the Central Coast Blue project. In June 2017, in response to the State of California action to lift the drought emergency and State-mandated water use restrictions throughout the state, Pismo Beach declared a “Normal Water Supply” and adopted an Urgency Ordinance O-2017-003, revising the restrictions associated with each water supply status to conform to State mandates. On June 1, 2021 Pismo Beach City Council declared a Moderately Restricted Water Supply condition and then on January 18, 2022 City Council declared a Severely Restricted Water Supply condition. The water use restrictions associated with the Severely Restricted Water Supply Condition are:  Use of water which causes runoff onto adjacent properties, non-irrigated areas, private and public walkways, roadways, gutters, parking lots, or structures is prohibited.  Outdoor water use for washing vehicles, boats, paved surfaces, buildings, and other similar uses shall be attended and have hand-controlled water devices, which shut off the water immediately when not in use.  No water shall be used for cleaning driveways, patios, parking lots, sidewalks, streets, or other such uses except as found necessary by the city to protect the public health or safety.  Outdoor irrigation  Outdoor irrigation is prohibited between the hours of ten a.m. and four p.m.  Applying water to outdoor landscapes during and within 48 hours after measurable rainfall is prohibited.  Irrigation of private and public landscaping, turf areas and gardens is permitted at even-numbered addresses only on Mondays and Thursdays, and at odd-numbered addresses only on Tuesdays and Fridays. All customers are directed to use no more water than necessary to maintain landscaping.  Restaurants shall serve drinking water only in response to a specific request by a customer.  Using water in a fountain or other decorative water feature, except where the water is part of a recirculating system, is prohibited.  Use of potable water for compaction or dust control purposes in construction activities is prohibited.  Emptying and refilling swimming pools and commercial spas is prohibited except to prevent structural damage and/or to provide for the public health and safety. In November 2021, Pismo Beach considered adoption of building restrictions such that on May 1st of each year the City’s water supply is evaluated and if the water supply as of May 1st is 15% greater than the previous year’s production, no building restrictions are required. If the water supply is 15% less than the previous year’s production, than a series of other factors are considered that would trigger implementation of Tier I, Tier II, or Tier III restrictions. As of early 2022, the City’s water supply is greater than 15% of the 2021 supply, therefore staff did not recommend immediate implementation of building restrictions. As required in the 2020 UWMP update (WSC, 2021), Pismo Beach prepared a standalone Water Shortage Contingency Plan (WSCP) that can be updated independently of the UWMP. As droughts and other events impacting water supply occur more frequently and intensely, the WSCP helps prepare for and respond to water shortages. The WSCP includes six standard stages of action tied to actual water shortage conditions in 10 percent increments. Each stage relates a supply reduction range to an associated demand reduction target, which may vary based on the nature of triggering conditions that are dependent on the cause, severity, and Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 106 anticipated duration of the water supply shortage. Each year City staff assesses their current water supply and estimates the available future supply based on their SWP Table A allocation, the SMGB groundwater levels, and storage levels at Lopez Lake. If the projected supply will not meet demand, then City staff presents status to the City Council and makes recommendations to enact shortage response actions and building restrictions as needed to accommodate the reduced supply (WSC, 2021). Grover Beach Between 2011 and 2014, Grover Beach declared Stage I and Stage II water shortage conditions and implemented conservation measures including public outreach and education and voluntary prohibitions on water use. In June 2014, Grover Beach declared a Stage III Water Shortage that required all water customers to reduce their water usage by 10 percent. Many of the prohibitions that had previously been voluntary since declaration of the Stage II Water Shortage Declaration became mandatory with the Stage III declaration. The declaration also provided the City with the authority to impose penalties for failure to comply with the water reduction or use prohibitions. Declaration of the Stage III Water Shortage in 2014 made mandatory many of the conservation measures and prohibitions that had previously been implemented prior to 2014. Although the drought declaration was lifted in 2017, all established mandatory water use restrictions remained in effect to encourage conservation. These prohibitions include:  Washing of sidewalks, driveways, or roadways where air blowers or sweeping provides a reasonable alternative.  Refilling of private pools except to maintain water levels.  Planting of turf and other new landscaping, unless it consists of drought-tolerant plants.  Washing vehicles, boats, etc. without a quick-acting shut-off nozzle on the hose.  Washing any exterior surfaces unless using a quick-acting shut-off nozzle on the hose.  Restaurant water service, unless requested.  Use of potable water for construction purposes, unless no other source of water or method can be used.  Operation of ornamental fountain or car wash unless water is re-circulated. In 2020, Grover Beach made changes to its water conservation program through preparation and adoption of a Water Shortage Contingency Plan (WSCP),29 enacted when water supplies are insufficient to support demand. As droughts and other events impacting water supply occur more frequently and intensely, the WSCP helps prepare for and respond to water shortages. The changes include six stages of action tied to actual water shortage conditions in 10 percent increments. Each stage relates a supply reduction range to an associated demand reduction target, which may vary based on the nature of triggering conditions that are dependent on the cause, severity, and anticipated duration of the water supply shortage. Grover Beach city staff continuously monitor the availability of water supply sources30 and, if one or more set of triggering conditions are met, the Public Works Director notifies the City Council and recommends declaration of the appropriate stage of water shortage. In addition to mandatory water use prohibitions, Grover Beach has implemented water conservation incentive programs including the following: 29 The WSCP is a component of the City of Grover Beach’s 2020 UWMP (MKN, 2021). 30 Including monitoring of Lopez Lake supplies and monitoring of groundwater availability based on the Deep Well Index value as compared with its threshold value of 7.5 feet NAVD 88. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 107  Cash for Grass Rebate Program  Smart Irrigation Controller and Sensor Rebate Program  Toilet Fixture, Showerhead, and Sink Aerator Retrofit Rebate Program  Washing Machine Rebate Program Oceano CSD Given the population of its service area, OCSD is not required to prepare an UWMP nor was it required to reduce water consumption as mandated by the Governor for urban water suppliers during the recent drought. Outdoor water use restrictions have been adopted, as required. In April 2015, OCSD adopted a rate increase that included tiered rates to promote water conservation. These rates were reduced in July 2017, upon adoption of the Post Drought Consumption Charges and Supplemental Water Charge Ordinance. In October 2020, the OCSD increased water rates and a new water rate structure was adopted that reduced the number of consumption tiers from five to two. This brought the OCSD rates more closely into conformance with Proposition 218 requirements. The Tier 1 rate is tied directly to the cost of the Lopez Water supply and the Tier 2 rate is tied directly to the cost of the State Water supply. In addition, the new rate structure eliminated the six units of water previously included in the base rate so that customers now pay a consumption charge for every unit of water used, which further promotes conservation. OCSD pumped only 9 percent of its groundwater entitlement in 2021 and is using Lopez Lake surplus water in addition to its SWP supply. OCSD is preserving its Lopez Lake allocation in storage while increasing deliveries of SWP. Meanwhile, OCSD’s conservation efforts continue to realize 20 percent reductions from 2013 levels. Strategies exist in the event of temporary non-delivery of SWP and Lopez Lake water and other unforeseen circumstances. Current strategies include resumption of groundwater pumping, storage of Lopez Lake allocation, and maximizing deliveries of SWP water as provided in SWP contracts. 7.2.8 Evaluate Alternative Sources of Supply Strategies:  Evaluate expanded use of recycled water, including implementation of Central Coast Blue.  Analyze the capacity of the Lopez Lake and Coastal Branch pipelines to maximize deliveries of surface water. The following analyses have been completed:  Lopez Lake Pipeline Capacity Evaluation (WSC, 2011a)  Lopez Lake Pipeline Capacity Re-Evaluation (WSC, 2011b)  Coastal Branch Capacity Assessment (WSC, 2011a)  Lopez Bypass and State Water Delivery Evaluation (WSC, 2017)  Optimize existing surface water supplies, including surface water storage, through the development of a framework for interagency exchanges and transfers, including SWP and Lopez Lake supplies.  Maximize Lopez Lake pipeline capacity. Discussion: The NCMA agencies continue to evaluate alternative sources of water supply that could provide a more reliable and sustainable water supply for the NCMA. An expanded portfolio of water supply sources will support sustainable management of the groundwater resource and help to reduce the risk of water shortages. These alternative sources include the following: Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 108  State Water Project. OCSD and Pismo Beach are currently SWP customers. Both agencies increased their SWP allocations by securing “drought buffers” to increase the availability of supply during periods of SWP shortfalls. Grover Beach and Arroyo Grande are not SWP customers. However, Arroyo Grande approved a measure in 2016 authorizing the City to purchase SWP water from the SLOFCWCD’s excess entitlement on a temporary basis and only during a declared local water emergency. To date, Arroyo Grande has not declared such an emergency and has not purchased SWP water.  Water Recycling. As discussed in Section 7.2.5, Pismo Beach and the SSLOCSD both prepared RWFPSs to evaluate alternatives for a recycled water program that could provide a supplemental water supply source and improve the water supply reliability for the Pismo Beach and the SSLOCSD member agencies (Arroyo Grande, Grover Beach, and OCSD). Section 7.2.5 also describes ongoing efforts for Central Coast Blue that will enable the NCMA agencies to produce recycled water to augment their water supplies. Construction of the new facility will allow for the use of recycled water to recharge the groundwater basin and provide a new, drought-proof source of water supply for the area. As conceived, the project includes construction of a distribution system that will inject advanced purified water into the SMGB and will allow the NCMA agencies to increase recharge to the aquifer, improve water supply reliability, and help prevent future occurrences of seawater intrusion.  Lopez Lake Expansion. In 2008, the County sponsored a preliminary assessment of the concept of installing an inflatable rubber dam at the Lopez Dam spillway. Subsequently, the SLOFCWCD CSA 12 and Arroyo Grande, Grover Beach, and Pismo Beach funded a study to further analyze the feasibility of increasing the yield of Lopez Lake by raising the spillway height with an inflatable dam or permanent extension. The study was finalized in 2013 and identified the potential to increase the annual yield from Lopez Lake by 500 AFY with a spillway height increase of 6 feet (Stetson, 2013). The NCMA agencies and Zone 3 are continuing to evaluate other aspects of the project, including impacts on the Habitat Conservation Plan process.  Desalination. In 2006, Arroyo Grande, Grover Beach, and OCSD used Proposition 50 funds to complete a feasibility study on desalination as an additional water supply option for the NCMA. This alternative supply is not considered to be a viable option at this time. When PG&E announced plans to close its Diablo Canyon Power Plant, previous efforts by the SLOFCWCD to (1) evaluate the potential to expand the existing desalination facility at the PG&E Diablo Canyon Power Plant and (2) connect it to the Lopez Lake pipeline to provide a supplemental water supply for the Zone 3 agencies were terminated.  Nacimiento Pipeline Extension. In 2006, Arroyo Grande, Grover Beach, and OCSD completed an evaluation of a Nacimiento pipeline extension to determine the feasibility of delivery of water from the Nacimiento reservoir to the NCMA. This alternative supply is not considered to be a viable option at this time. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 109 SECTION 8: References Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements: Food and Agriculture Organization of the United Nations, Irrigation and Drainage Paper 56, 300p. Cal Poly. 2019. California Evapotranspiration Data for Irrigation District Water Balances, Irrigation Training & Research Center, San Luis Obispo, CA 93407-0730. Cleath-Harris Geologists (CHG). 2017. Phase 1A Model TM; Groundwater Flow Analysis Regional Groundwater Sustainability Project Arroyo Grande/Tri-Cities Mesa Area. Prepared for City of Pismo Beach and Water Systems Consulting. February 2017. DWR. 1970. Sea-Water Intrusion: Pismo-Guadalupe Area. Bulletin No. 63-3, 76 p. Prepared by the California Department of Water Resources. DWR. 1975. Sea-Water Intrusion in California, Inventory of Coastal Ground Water Basins, Bulletin No. 63-5. Prepared by the California Department of Water Resources. DWR. 1979. Ground Water in the Arroyo Grande Area, Southern District Report. Prepared by the California Department of Water Resources. DWR. 2002. Water Resources of the Arroyo Grande – Nipomo Mesa Area: Southern District Report. Prepared by the California Department of Water Resources. DWR. 2016. IWFM Demand Calculator IDC 2015: Theoretical Documentation and User’s Manual. Central Valley Modeling Unit. Prepared by the California Department of Water Resources Bay Delta Office. DWR et al. 2010. 20X2020 Water Conservation Plan. Prepared by the California Department of Water Resources, State Water Resources Control Board, California Bay-Delta Authority, California Energy Commission, California Department of Public Health, California Public Utilities Commission, California Air Resources Board. Fugro. 2015. Santa Maria Groundwater Basin Characterization and Planning Activities Study, Final Report. Prepared for San Luis Obispo County Flood Control and Water Conservation District, December 30, 2015. Prepared by Fugro Consultants, Inc. Geoscience Support Services. 2019. City of Pismo Beach and South San Luis Obispo County Sanitation District, Central Coast Blue Phase 1B Hydrogeologic Evaluation. Prepared for Water Systems Consulting. November 25, 2019. Geoscience Support Services. 2021. City of Pismo Beach Central Coast Blue Phase 1C Hydrogeologic Evaluation Model Updates and Scenario Evaluation. Prepared for Water Systems Consulting. June 8, 2021. Miller, G. A. and R.E. Evenson. 1966. Utilization of Groundwater in the Santa Maria Valley Area, California. USGS Water Supply Paper 1819-A. MKN. 2021. City of Grover Beach 2020 Urban Water Management Plan. December 2021. Mualem, Y. 1976. “A new model for predicting the hydraulic conductivity of unsaturated porous media.” Water Resources Res., 12, 513-522. Northern Cities Management Area. 2008. Annual Monitoring Report, prepared by Todd Engineers. April 2009. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 110 Northern Cities Management Area. 2009. Annual Monitoring Report, prepared by Todd Engineers. April 2010. Northern Cities Management Area. 2010. Annual Monitoring Report, prepared by GEI Consultants. April 2011. Northern Cities Management Area. 2011. Annual Monitoring Report, prepared by GEI Consultants. May 2012. Northern Cities Management Area. 2012. Annual Monitoring Report, prepared by GEI Consultants. April 2013. Northern Cities Management Area. 2013. Annual Monitoring Report, prepared by Fugro Consultants. April 2014. Northern Cities Management Area. 2014. Annual Monitoring Report, prepared by Fugro Consultants. April 2015. Northern Cities Management Area. 2015. Annual Monitoring Report, prepared by Fugro Consultants. April 2016. Northern Cities Management Area. 2016. Annual Monitoring Report, prepared by GSI Water Solutions, Inc. April 2017. Northern Cities Management Area. 2017. Annual Monitoring Report, prepared by GSI Water Solutions, Inc. April 2018. Northern Cities Management Area. 2018. Annual Monitoring Report, prepared by GSI Water Solutions, Inc. April 2019. Northern Cities Management Area. 2019. Annual Monitoring Report, prepared by GSI Water Solutions, Inc. April 2020. Northern Cities Management Area. 2020. Annual Monitoring Report, prepared by GSI Water Solutions, Inc. April 2021. Nipomo Mesa Management Area. 2010. 2nd Annual Report, Calendar Year 2009, prepared by the NMMA Technical Group, April 2010. Nipomo Mesa Management Area. 2011. 3rd Annual Report, Calendar Year 2010, prepared by the NMMA Technical Group, April 2011. Nipomo Mesa Management Area. 2012. 4th Annual Report, Calendar Year 2011, prepared by the NMMA Technical Group, April 2012. Nipomo Mesa Management Area. 2013. 5th Annual Report, Calendar Year 2012, prepared by the NMMA Technical Group, April 2013. Nipomo Mesa Management Area. 2014. 6th Annual Report, Calendar Year 2013, prepared by the NMMA Technical Group, April 2014. Nipomo Mesa Management Area. 2015. 7th Annual Report, Calendar Year 2014, prepared by the NMMA Technical Group, April 2015. Nipomo Mesa Management Area. 2016. 8th Annual Report, Calendar Year 2015, prepared by the NMMA Technical Group, April 2016. Nipomo Mesa Management Area. 2017. 9th Annual Report, Calendar Year 2016, prepared by the NMMA Technical Group, April 2017. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 111 Nipomo Mesa Management Area. 2018. 10th Annual Report, Calendar Year 2017, prepared by the NMMA Technical Group, April 2018. Nipomo Mesa Management Area. 2019. 11th Annual Report, Calendar Year 2018, prepared by the NMMA Technical Group, April 2019. Nipomo Mesa Management Area. 2020. 12th Annual Report, Calendar Year 2019, prepared by the NMMA Technical Group, April 2020. Nipomo Mesa Management Area. 2021. 13th Annual Report, Calendar Year 2020, prepared by the NMMA Technical Group, April 2021. PG&E. 2014. Central Coastal California Seismic Imaging Project (CCSIP), report to the California Public Utilities Commission. http://www.pge.com/en/safety/systemworks/dcpp/seismicsafety/report.page Prepared by Pacific Gas and Electric Company. Ploessel M.R. 1982. Ghyben-herzberg ratio. In: Beaches and Coastal Geology. Encyclopedia of Earth Sciences Series. Springer, New York, NY. https://doi.org/10.1007/0-387-30843-1_207 Ramboll. 2022. Pismo Beach Groundwater Investigation; Processing, Inversion and Interpretation of AEM Data. Prepared for City of Pismo Beach and Water Systems Consulting. January 2022. SLO Co. 2019. San Luis Obispo County Stormwater Resource Plan. Submitted to the State Water Resources Control Board on February 28, 2019. Prepared by San Luis Obispo County. SLOFCWCD. 2014. Low Reservoir Response Plan for the San Luis Obispo County Flood Control and Water Conservation District Zone 3. Prepared by the San Luis Obispo County Flood Control and Water Conservation District Zone 3. Stetson. 2013. Lopez Lake Spillway Raise Project Report. Prepared by Stetson Engineers, Inc. Todd. 2007. Water Balance Study for the Northern Cities Area. Prepared by Todd Engineers. Todd. 2008. Monitoring Program for the Northern Cities Management Area. Prepared by Todd Engineers. Todd. 2010. Summary of Renovations for the Northern Cities Management Area Sentry Wells, San Luis Obispo County, California. Prepared by Todd Engineers. U.S. Geological Survey. 2006. Quaternary fault and fold database for the United States. http://earthquake.usgs.gov/regional/qfaults van Genuchten, M.T. 1985. “A closed-form solution for predicting the conductivity of unsaturated soils.” Soil Sci. Soc. Am. J., 44, 892-898. Wallace Group. 2010. Survey Report on the “Sentry” Well Elevation Establishment for Cities of Arroyo Grande, Grover Beach, Pismo Beach and the Oceano Community Services District. WSC. 2011a. Capacity Assessment of the Coastal Branch, Chorro Valley, & Lopez Pipelines. Prepared by Water Systems Consulting, Inc. for the San Luis Obispo County Flood Control and Water Conservation District and the Central Coast Water Authority. Prepared by Water Systems Consulting, Inc. WSC. 2011b. Lopez Pipeline Re-Evaluation Technical Memorandum. Prepared by Water Systems Consulting, Inc. for the San Luis Obispo County Flood Control and Water Conservation District and the Central Coast Water Authority. Prepared by Water Systems Consulting, Inc. WSC. 2014. Final Draft Strategic Plan for the Northern Cities Management Area Technical Group, June 2014. Prepared by Water Systems Consulting, Inc. Final | Northern Cities Management Area 2021 Annual Monitoring Report GSI Water Solutions, Inc. 112 WSC. 2015. Recycled Water Facilities Planning Study – Final: prepared for the City of Pismo Beach, April 2015. Prepared by Water Systems Consulting, Inc. WSC. 2017. Lopez Bypass & State Water Delivery Evaluation. Prepared for the San Luis Obispo County Flood Control and Water Conservation District. Prepared by Water Systems Consulting, Inc. WSC. 2017. Amended Final Draft, 2015 Urban Water Management Plan, City of Arroyo Grande. January 2017. WSC. 2021. City of Pismo Beach 2020 Urban Water Management Plan. June 2021. Woodring, W.P and M.N. Bramlette. 1950. “Geology and Paleontology of the Santa Maria District, California.” U.S. Geological Survey, Professional Paper 222, 142 p. Worts, G.G., Jr. 1951. “Geology and Ground-water Resources of the Santa Maria Valley Area, California.” U.S. Geological Survey Water-Supply Paper 1000, 176 p. APPENDIX A NCMA Sentry Well Water Level and Water Quality Data This page intentionally left blank. Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B01 North Beach Shallow Alluvium 10/5/2021 6.20 Stove Pipe Top of Steel 13.58 7.38 32S/12E-24B01 North Beach Shallow Alluvium 7/13/2021 6.15 Stove Pipe Top of Steel 13.58 7.43 32S/12E-24B01 North Beach Shallow Alluvium 4/6/2021 6.20 Stove Pipe Top of Steel 13.58 7.38 32S/12E-24B01 North Beach Shallow Alluvium 1/6/2021 6.08 Stove Pipe Top of Steel 13.58 7.5 32S/12E-24B01 North Beach Shallow Alluvium 10/7/2020 6.27 Stove Pipe Top of Steel 13.58 7.31 32S/12E-24B01 North Beach Shallow Alluvium 7/6/2020 5.94 Stove Pipe Top of Steel 13.58 7.64 32S/12E-24B01 North Beach Shallow Alluvium 4/17/2020 5.93 Stove Pipe Top of Steel 13.58 7.65 32S/12E-24B01 North Beach Shallow Alluvium 1/7/2020 5.80 Stove Pipe Top of Steel 13.58 7.78 32S/12E-24B01 North Beach Shallow Alluvium 10/9/2019 6.22 Stove Pipe Top of Steel 13.58 7.36 32S/12E-24B01 North Beach Shallow Alluvium 7/9/2019 6.07 Stove Pipe Top of Steel 13.58 7.51 32S/12E-24B01 North Beach Shallow Alluvium 4/9/2019 6.40 Stove Pipe Top of Steel 13.58 7.18 32S/12E-24B01 North Beach Shallow Alluvium 1/8/2019 5.95 Stove Pipe Top of Steel 13.58 7.63 32S/12E-24B01 North Beach Shallow Alluvium 10/9/2018 6.29 Stove Pipe Top of Steel 13.58 7.29 32S/12E-24B01 North Beach Shallow Alluvium 7/10/2018 7.00 Stove Pipe Top of Steel 13.58 6.58 32S/12E-24B01 North Beach Shallow Alluvium 4/10/2018 6.48 Stove Pipe Top of Steel 13.58 7.10 32S/12E-24B01 North Beach Shallow Alluvium 1/10/2018 6.00 Stove Pipe Top of Steel 13.58 7.58 32S/12E-24B01 North Beach Shallow Alluvium 10/10/2017 6.12 Stove Pipe Top of Steel 13.58 7.46 32S/12E-24B01 North Beach Shallow Alluvium 7/11/2017 6.74 Stove Pipe Top of Steel 13.58 6.84 32S/12E-24B01 North Beach Shallow Alluvium 4/11/2017 6.30 Stove Pipe Top of Steel 13.58 7.28 32S/12E-24B01 North Beach Shallow Alluvium 1/10/2017 5.54 Stove Pipe Top of Steel 13.58 8.04 32S/12E-24B01 North Beach Shallow Alluvium 10/12/2016 6.54 Stove Pipe Top of Steel 13.58 7.04 32S/12E-24B01 North Beach Shallow Alluvium 7/19/2016 6.78 Stove Pipe Top of Steel 13.58 6.80 32S/12E-24B01 North Beach Shallow Alluvium 4/12/2016 6.35 Stove Pipe Top of Steel 13.58 7.23 32S/12E-24B01 North Beach Shallow Alluvium 1/12/2016 5.17 Stove Pipe Top of Steel 13.58 8.41 32S/12E-24B01 North Beach Shallow Alluvium 10/13/2015 5.73 Stove Pipe Top of Steel 13.58 7.85 32S/12E-24B01 North Beach Shallow Alluvium 7/14/2015 6.06 Stove Pipe Top of Steel 13.58 7.52 32S/12E-24B01 North Beach Shallow Alluvium 4/14/2015 6.22 Stove Pipe Top of Steel 13.58 7.36 32S/12E-24B01 North Beach Shallow Alluvium 1/13/2015 5.83 Stove Pipe Top of Steel 13.58 7.75 32S/12E-24B01 North Beach Shallow Alluvium 10/14/2014 5.76 Stove Pipe Top of Steel 13.58 7.82 32S/12E-24B01 North Beach Shallow Alluvium 7/29/2014 5.99 Stove Pipe Top of Steel 13.58 7.59 32S/12E-24B01 North Beach Shallow Alluvium 6/4/2014 6.52 Stove Pipe Top of Steel 13.58 7.06 32S/12E-24B01 North Beach Shallow Alluvium 4/15/2014 5.95 Stove Pipe Top of Steel 13.58 7.63 32S/12E-24B01 North Beach Shallow Alluvium 1/14/2014 5.75 Stove Pipe Top of Steel 13.58 7.83 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B01 North Beach Shallow Alluvium 10/14/2013 6.07 Stove Pipe Top of Steel 13.58 7.51 32S/12E-24B01 North Beach Shallow Alluvium 7/9/2013 6.09 Stove Pipe Top of Steel 13.58 7.49 32S/12E-24B01 North Beach Shallow Alluvium 4/10/2013 7.00 Stove Pipe Top of Steel 13.58 6.58 32S/12E-24B01 North Beach Shallow Alluvium 1/14/2013 5.72 Stove Pipe Top of Steel 13.58 7.86 32S/12E-24B01 North Beach Shallow Alluvium 10/29/2012 5.92 Stove Pipe Top of Steel 13.58 7.66 32S/12E-24B01 North Beach Shallow Alluvium 7/23/2012 5.79 Stove Pipe Top of Steel 13.58 7.79 32S/12E-24B01 North Beach Shallow Alluvium 4/18/2012 5.58 Stove Pipe Top of Steel 13.58 8.00 32S/12E-24B01 North Beach Shallow Alluvium 1/11/2012 5.72 Stove Pipe Top of Steel 13.58 7.86 32S/12E-24B01 North Beach Shallow Alluvium 11/21/2011 5.80 Stove Pipe Top of Steel 13.58 7.78 32S/12E-24B01 North Beach Shallow Alluvium 7/26/2011 6.38 Stove Pipe Top of Steel 13.58 7.20 32S/12E-24B01 North Beach Shallow Alluvium 4/20/2011 6.40 Stove Pipe Top of Steel 13.58 7.18 32S/12E-24B01 North Beach Shallow Alluvium 1/24/2011 5.78 Stove Pipe Top of Steel 13.58 7.80 32S/12E-24B01 North Beach Shallow Alluvium 10/21/2010 6.37 Stove Pipe Top of Steel 13.58 7.21 32S/12E-24B01 North Beach Shallow Alluvium 7/27/2010 6.48 Stove Pipe Top of Steel 13.58 7.1 32S/12E-24B01 North Beach Shallow Alluvium 4/27/2010 3.84 Flush Top Flush Mount 10.70 6.86 32S/12E-24B01 North Beach Shallow Alluvium 1/27/2010 3.13 Flush Top Flush Mount 10.70 7.57 32S/12E-24B01 North Beach Shallow Alluvium 10/19/2009 2.28 Flush Top Flush Mount 10.70 8.42 32S/12E-24B01 North Beach Shallow Alluvium 8/20/2009 3.25 Flush Top Flush Mount 10.70 7.45 32S/12E-24B01 North Beach Shallow Alluvium 5/12/2009 3.58 Flush Top Flush Mount 10.70 7.12 32S/12E-24B01 North Beach Shallow Alluvium 4/7/2009 1.61 Flush Top Flush Mount 10.70 9.09 32S/12E-24B01 North Beach Shallow Alluvium 10/15/2008 4.72 Flush Top Flush Mount 10.70 5.98 32S/12E-24B01 North Beach Shallow Alluvium 4/15/2008 2.65 Flush Top Flush Mount 10.70 8.05 32S/12E-24B01 North Beach Shallow Alluvium 10/18/2007 5.15 Flush Top Flush Mount 10.70 5.55 32S/12E-24B01 North Beach Shallow Alluvium 10/19/2006 0.75 Flush Top Flush Mount 10.70 9.95 32S/12E-24B01 North Beach Shallow Alluvium 4/25/2006 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B01 North Beach Shallow Alluvium 10/7/2005 4.30 Flush Top Flush Mount 10.70 6.40 32S/12E-24B01 North Beach Shallow Alluvium 4/29/2005 2.65 Flush Top Flush Mount 10.70 8.05 32S/12E-24B01 North Beach Shallow Alluvium 10/29/2004 4.70 Flush Top Flush Mount 10.70 6.00 32S/12E-24B01 North Beach Shallow Alluvium 4/8/2004 0.80 Flush Top Flush Mount 10.70 9.90 32S/12E-24B01 North Beach Shallow Alluvium 10/8/2003 1.20 Flush Top Flush Mount 10.70 9.50 32S/12E-24B01 North Beach Shallow Alluvium 10/14/2002 3.60 Flush Top Flush Mount 10.70 7.10 32S/12E-24B01 North Beach Shallow Alluvium 4/9/2002 0.80 Flush Top Flush Mount 10.70 9.90 32S/12E-24B01 North Beach Shallow Alluvium 10/5/2001 2.70 Flush Top Flush Mount 10.70 8.00 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B01 North Beach Shallow Alluvium 4/23/2001 2.20 Flush Top Flush Mount 10.70 8.50 32S/12E-24B01 North Beach Shallow Alluvium 4/24/2000 3.50 Flush Top Flush Mount 10.70 7.20 32S/12E-24B01 North Beach Shallow Alluvium 10/29/1999 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B01 North Beach Shallow Alluvium 4/15/1999 1.78 Flush Top Flush Mount 10.70 8.92 32S/12E-24B01 North Beach Shallow Alluvium 10/20/1998 2.20 Flush Top Flush Mount 10.70 8.50 32S/12E-24B01 North Beach Shallow Alluvium 4/23/1998 1.00 Flush Top Flush Mount 10.70 9.70 32S/12E-24B01 North Beach Shallow Alluvium 10/22/1997 3.16 Flush Top Flush Mount 10.70 7.54 32S/12E-24B01 North Beach Shallow Alluvium 4/29/1997 3.13 Flush Top Flush Mount 10.70 7.57 32S/12E-24B01 North Beach Shallow Alluvium 10/23/1996 4.50 Flush Top Flush Mount 10.70 6.20 32S/12E-24B01 North Beach Shallow Alluvium 4/29/1996 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B01 North Beach Shallow Alluvium 10/10/1995 3.30 Flush Top Flush Mount 10.70 7.40 32S/12E-24B01 North Beach Shallow Alluvium 4/19/1995 1.89 Flush Top Flush Mount 10.70 8.81 32S/12E-24B01 North Beach Shallow Alluvium 11/1/1994 4.70 Flush Top Flush Mount 10.70 6.00 32S/12E-24B01 North Beach Shallow Alluvium 4/11/1994 3.96 Flush Top Flush Mount 10.70 6.74 32S/12E-24B01 North Beach Shallow Alluvium 10/13/1993 3.95 Flush Top Flush Mount 10.70 6.75 32S/12E-24B01 North Beach Shallow Alluvium 4/8/1993 2.89 Flush Top Flush Mount 10.70 7.81 32S/12E-24B01 North Beach Shallow Alluvium 11/4/1992 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B01 North Beach Shallow Alluvium 4/21/1992 3.90 Flush Top Flush Mount 10.70 6.80 32S/12E-24B01 North Beach Shallow Alluvium 10/11/1991 4.51 Flush Top Flush Mount 10.70 6.19 32S/12E-24B01 North Beach Shallow Alluvium 4/19/1991 4.35 Flush Top Flush Mount 10.70 6.35 32S/12E-24B01 North Beach Shallow Alluvium 10/11/1990 4.34 Flush Top Flush Mount 10.70 6.36 32S/12E-24B01 North Beach Shallow Alluvium 4/24/1990 4.54 Flush Top Flush Mount 10.70 6.16 32S/12E-24B01 North Beach Shallow Alluvium 10/4/1989 3.51 Flush Top Flush Mount 10.70 7.19 32S/12E-24B01 North Beach Shallow Alluvium 4/17/1989 4.31 Flush Top Flush Mount 10.70 6.39 32S/12E-24B01 North Beach Shallow Alluvium 10/20/1988 4.40 Flush Top Flush Mount 10.70 6.30 32S/12E-24B01 North Beach Shallow Alluvium 4/29/1988 4.26 Flush Top Flush Mount 10.70 6.44 32S/12E-24B01 North Beach Shallow Alluvium 4/21/1988 4.34 Flush Top Flush Mount 10.70 6.36 32S/12E-24B01 North Beach Shallow Alluvium 10/19/1987 4.45 Flush Top Flush Mount 10.70 6.25 32S/12E-24B01 North Beach Shallow Alluvium 4/13/1987 3.18 Flush Top Flush Mount 10.70 7.52 32S/12E-24B01 North Beach Shallow Alluvium 10/31/1986 3.88 Flush Top Flush Mount 10.70 6.82 32S/12E-24B01 North Beach Shallow Alluvium 4/27/1986 4.18 Flush Top Flush Mount 10.70 6.52 32S/12E-24B01 North Beach Shallow Alluvium 10/18/1985 3.41 Flush Top Flush Mount 10.70 7.29 32S/12E-24B01 North Beach Shallow Alluvium 4/22/1985 2.10 Flush Top Flush Mount 10.70 8.60 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B01 North Beach Shallow Alluvium 10/29/1984 2.12 Flush Top Flush Mount 10.70 8.58 32S/12E-24B01 North Beach Shallow Alluvium 10/28/1983 1.92 Flush Top Flush Mount 10.70 8.78 32S/12E-24B01 North Beach Shallow Alluvium 5/6/1982 2.15 Flush Top Flush Mount 10.70 8.55 32S/12E-24B01 North Beach Shallow Alluvium 10/19/1981 2.08 Flush Top Flush Mount 10.70 8.62 32S/12E-24B01 North Beach Shallow Alluvium 4/21/1981 2.06 Flush Top Flush Mount 10.70 8.64 32S/12E-24B01 North Beach Shallow Alluvium 10/21/1980 2.59 Flush Top Flush Mount 10.70 8.11 32S/12E-24B01 North Beach Shallow Alluvium 5/9/1980 2.08 Flush Top Flush Mount 10.70 8.62 32S/12E-24B01 North Beach Shallow Alluvium 11/7/1979 2.60 Flush Top Flush Mount 10.70 8.10 32S/12E-24B01 North Beach Shallow Alluvium 4/17/1979 2.13 Flush Top Flush Mount 10.70 8.57 32S/12E-24B01 North Beach Shallow Alluvium 5/17/1977 2.39 Flush Top Flush Mount 10.70 8.31 32S/12E-24B01 North Beach Shallow Alluvium 6/9/1976 14.00 Flush Top Flush Mount 10.70 -3.30 32S/12E-24B01 North Beach Shallow Alluvium 5/21/1976 4.00 Flush Top Flush Mount 10.70 6.70 32S/12E-24B01 North Beach Shallow Alluvium 1/14/1976 2.00 Flush Top Flush Mount 10.70 8.70 32S/12E-24B01 North Beach Shallow Alluvium 7/7/1975 2.00 Flush Top Flush Mount 10.70 8.70 32S/12E-24B01 North Beach Shallow Alluvium 4/1/1975 2.08 Flush Top Flush Mount 10.70 8.62 32S/12E-24B01 North Beach Shallow Alluvium 6/7/1974 1.00 Flush Top Flush Mount 10.70 9.70 32S/12E-24B01 North Beach Shallow Alluvium 4/1/1974 2.00 Flush Top Flush Mount 10.70 8.70 32S/12E-24B01 North Beach Shallow Alluvium 9/20/1973 2.16 Flush Top Flush Mount 10.70 8.54 32S/12E-24B01 North Beach Shallow Alluvium 6/29/1972 2.57 Flush Top Flush Mount 10.70 8.13 32S/12E-24B01 North Beach Shallow Alluvium 2/29/1972 1.00 Flush Top Flush Mount 10.70 9.70 32S/12E-24B01 North Beach Shallow Alluvium 2/21/1972 1.45 Flush Top Flush Mount 10.70 9.25 32S/12E-24B01 North Beach Shallow Alluvium 11/29/1971 2.36 Flush Top Flush Mount 10.70 8.34 32S/12E-24B01 North Beach Shallow Alluvium 8/28/1971 2.25 Flush Top Flush Mount 10.70 8.45 32S/12E-24B01 North Beach Shallow Alluvium 6/2/1971 2.59 Flush Top Flush Mount 10.70 8.11 32S/12E-24B01 North Beach Shallow Alluvium 3/2/1971 1.81 Flush Top Flush Mount 10.70 8.89 32S/12E-24B01 North Beach Shallow Alluvium 12/15/1970 2.42 Flush Top Flush Mount 10.70 8.28 32S/12E-24B01 North Beach Shallow Alluvium 8/4/1970 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B01 North Beach Shallow Alluvium 6/3/1970 2.30 Flush Top Flush Mount 10.70 8.40 32S/12E-24B01 North Beach Shallow Alluvium 3/27/1970 2.16 Flush Top Flush Mount 10.70 8.54 32S/12E-24B01 North Beach Shallow Alluvium 1/29/1970 2.23 Flush Top Flush Mount 10.70 8.47 32S/12E-24B01 North Beach Shallow Alluvium 10/3/1969 2.55 Flush Top Flush Mount 10.70 8.15 32S/12E-24B01 North Beach Shallow Alluvium 7/23/1969 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B01 North Beach Shallow Alluvium 6/24/1969 3.00 Flush Top Flush Mount 10.70 7.70 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B01 North Beach Shallow Alluvium 5/22/1969 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B01 North Beach Shallow Alluvium 4/18/1969 2.13 Flush Top Flush Mount 10.70 8.57 32S/12E-24B01 North Beach Shallow Alluvium 1/15/1969 2.71 Flush Top Flush Mount 10.70 7.99 32S/12E-24B01 North Beach Shallow Alluvium 12/12/1968 2.81 Flush Top Flush Mount 10.70 7.89 32S/12E-24B01 North Beach Shallow Alluvium 11/14/1968 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B01 North Beach Shallow Alluvium 10/17/1968 3.47 Flush Top Flush Mount 10.70 7.23 32S/12E-24B01 North Beach Shallow Alluvium 9/14/1968 3.64 Flush Top Flush Mount 10.70 7.06 32S/12E-24B01 North Beach Shallow Alluvium 8/13/1968 3.23 Flush Top Flush Mount 10.70 7.47 32S/12E-24B01 North Beach Shallow Alluvium 7/22/1968 3.68 Flush Top Flush Mount 10.70 7.02 32S/12E-24B01 North Beach Shallow Alluvium 6/24/1968 3.70 Flush Top Flush Mount 10.70 7.00 32S/12E-24B01 North Beach Shallow Alluvium 5/30/1968 3.69 Flush Top Flush Mount 10.70 7.01 32S/12E-24B01 North Beach Shallow Alluvium 4/20/1968 2.84 Flush Top Flush Mount 10.70 7.86 32S/12E-24B01 North Beach Shallow Alluvium 3/21/1968 2.99 Flush Top Flush Mount 10.70 7.71 32S/12E-24B01 North Beach Shallow Alluvium 2/22/1968 2.67 Flush Top Flush Mount 10.70 8.03 32S/12E-24B01 North Beach Shallow Alluvium 1/16/1968 2.34 Flush Top Flush Mount 10.70 8.36 32S/12E-24B01 North Beach Shallow Alluvium 12/8/1967 2.66 Flush Top Flush Mount 10.70 8.04 32S/12E-24B01 North Beach Shallow Alluvium 11/13/1967 2.99 Flush Top Flush Mount 10.70 7.71 32S/12E-24B01 North Beach Shallow Alluvium 10/11/1967 3.86 Flush Top Flush Mount 10.70 6.84 32S/12E-24B01 North Beach Shallow Alluvium 9/5/1967 3.35 Flush Top Flush Mount 10.70 7.35 32S/12E-24B01 North Beach Shallow Alluvium 8/8/1967 3.57 Flush Top Flush Mount 10.70 7.13 32S/12E-24B01 North Beach Shallow Alluvium 7/12/1967 3.69 Flush Top Flush Mount 10.70 7.01 32S/12E-24B01 North Beach Shallow Alluvium 6/1/1967 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B01 North Beach Shallow Alluvium 5/2/1967 3.10 Flush Top Flush Mount 10.70 7.60 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B02 North Beach Middle Paso Robles 10/5/2021 6.56 Stove Pipe Top of Steel 13.58 7.023333333 32S/12E-24B02 North Beach Middle Paso Robles 7/13/2021 7.10 Stove Pipe Top of Steel 13.58 6.48 32S/12E-24B02 North Beach Middle Paso Robles 4/6/2021 6.25 Stove Pipe Top of Steel 13.58 7.33 32S/12E-24B02 North Beach Middle Paso Robles 1/6/2021 6.27 Stove Pipe Top of Steel 13.58 7.31 32S/12E-24B02 North Beach Middle Paso Robles 10/7/2020 6.64 Stove Pipe Top of Steel 13.58 6.94 32S/12E-24B02 North Beach Middle Paso Robles 7/6/2020 6.35 Stove Pipe Top of Steel 13.58 7.23 32S/12E-24B02 North Beach Middle Paso Robles 4/7/2020 5.54 Stove Pipe Top of Steel 13.58 8.04 32S/12E-24B02 North Beach Middle Paso Robles 1/7/2020 5.93 Stove Pipe Top of Steel 13.58 7.65 32S/12E-24B02 North Beach Middle Paso Robles 10/9/2019 6.52 Stove Pipe Top of Steel 13.58 7.06 32S/12E-24B02 North Beach Middle Paso Robles 7/9/2019 6.40 Stove Pipe Top of Steel 13.58 7.18 32S/12E-24B02 North Beach Middle Paso Robles 4/9/2019 6.50 Stove Pipe Top of Steel 13.58 7.08 32S/12E-24B02 North Beach Middle Paso Robles 1/8/2019 6.00 Stove Pipe Top of Steel 13.58 7.58 32S/12E-24B02 North Beach Middle Paso Robles 10/9/2018 6.65 Stove Pipe Top of Steel 13.58 6.93 32S/12E-24B02 North Beach Middle Paso Robles 7/10/2018 7.17 Stove Pipe Top of Steel 13.58 6.41 32S/12E-24B02 North Beach Middle Paso Robles 4/10/2018 6.02 Stove Pipe Top of Steel 13.58 7.56 32S/12E-24B02 North Beach Middle Paso Robles 1/10/2018 5.57 Stove Pipe Top of Steel 13.58 8.01 32S/12E-24B02 North Beach Middle Paso Robles 10/10/2017 6.46 Stove Pipe Top of Steel 13.58 7.12 32S/12E-24B02 North Beach Middle Paso Robles 7/11/2017 6.93 Stove Pipe Top of Steel 13.58 6.65 32S/12E-24B02 North Beach Middle Paso Robles 4/11/2017 6.26 Stove Pipe Top of Steel 13.58 7.32 32S/12E-24B02 North Beach Middle Paso Robles 1/10/2017 5.33 Stove Pipe Top of Steel 13.58 8.25 32S/12E-24B02 North Beach Middle Paso Robles 10/12/2016 7.05 Stove Pipe Top of Steel 13.58 6.53 32S/12E-24B02 North Beach Middle Paso Robles 7/19/2016 7.61 Stove Pipe Top of Steel 13.58 5.97 32S/12E-24B02 North Beach Middle Paso Robles 4/12/2016 6.37 Stove Pipe Top of Steel 13.58 7.21 32S/12E-24B02 North Beach Middle Paso Robles 1/12/2016 5.51 Stove Pipe Top of Steel 13.58 8.07 32S/12E-24B02 North Beach Middle Paso Robles 10/13/2015 6.61 Stove Pipe Top of Steel 13.58 6.97 32S/12E-24B02 North Beach Middle Paso Robles 7/14/2015 6.97 Stove Pipe Top of Steel 13.58 6.61 32S/12E-24B02 North Beach Middle Paso Robles 4/14/2015 7.13 Stove Pipe Top of Steel 13.58 6.45 32S/12E-24B02 North Beach Middle Paso Robles 1/13/2015 6.28 Stove Pipe Top of Steel 13.58 7.30 32S/12E-24B02 North Beach Middle Paso Robles 10/14/2014 6.61 Stove Pipe Top of Steel 13.58 6.97 32S/12E-24B02 North Beach Middle Paso Robles 7/29/2014 7.05 Stove Pipe Top of Steel 13.58 6.53 32S/12E-24B02 North Beach Middle Paso Robles 6/4/2014 8.25 Stove Pipe Top of Steel 13.58 5.33 32S/12E-24B02 North Beach Middle Paso Robles 4/15/2014 6.55 Stove Pipe Top of Steel 13.58 7.03 32S/12E-24B02 North Beach Middle Paso Robles 1/14/2014 6.34 Stove Pipe Top of Steel 13.58 7.24 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B02 North Beach Middle Paso Robles 10/14/2013 7.08 Stove Pipe Top of Steel 13.58 6.50 32S/12E-24B02 North Beach Middle Paso Robles 7/9/2013 7.17 Stove Pipe Top of Steel 13.58 6.41 32S/12E-24B02 North Beach Middle Paso Robles 4/10/2013 6.33 Stove Pipe Top of Steel 13.58 7.25 32S/12E-24B02 North Beach Middle Paso Robles 1/14/2013 5.61 Stove Pipe Top of Steel 13.58 7.97 32S/12E-24B02 North Beach Middle Paso Robles 10/29/2012 5.88 Stove Pipe Top of Steel 13.58 7.7 32S/12E-24B02 North Beach Middle Paso Robles 7/23/2012 6.12 Stove Pipe Top of Steel 13.58 7.46 32S/12E-24B02 North Beach Middle Paso Robles 4/18/2012 5.48 Stove Pipe Top of Steel 13.58 8.1 32S/12E-24B02 North Beach Middle Paso Robles 1/11/2012 5.47 Stove Pipe Top of Steel 13.58 8.11 32S/12E-24B02 North Beach Middle Paso Robles 11/21/2011 5.69 Stove Pipe Top of Steel 13.58 7.89 32S/12E-24B02 North Beach Middle Paso Robles 7/26/2011 6.51 Stove Pipe Top of Steel 13.58 7.07 32S/12E-24B02 North Beach Middle Paso Robles 4/20/2011 6.30 Stove Pipe Top of Steel 13.58 7.28 32S/12E-24B02 North Beach Middle Paso Robles 1/24/2011 5.69 Stove Pipe Top of Steel 13.58 7.89 32S/12E-24B02 North Beach Middle Paso Robles 10/21/2010 6.79 Stove Pipe Top of Steel 13.58 6.79 32S/12E-24B02 North Beach Middle Paso Robles 7/27/2010 7.05 Stove Pipe Top of Steel 13.58 6.53 32S/12E-24B02 North Beach Middle Paso Robles 4/27/2010 4.34 Flush Top Flush Mount 10.70 6.36 32S/12E-24B02 North Beach Middle Paso Robles 1/27/2010 3.38 Flush Top Flush Mount 10.70 7.32 32S/12E-24B02 North Beach Middle Paso Robles 10/19/2009 2.26 Flush Top Flush Mount 10.70 8.44 32S/12E-24B02 North Beach Middle Paso Robles 8/20/2009 4.09 Flush Top Flush Mount 10.70 6.61 32S/12E-24B02 North Beach Middle Paso Robles 5/12/2009 4.74 Flush Top Flush Mount 10.70 5.96 32S/12E-24B02 North Beach Middle Paso Robles 10/15/2008 4.54 Flush Top Flush Mount 10.70 6.16 32S/12E-24B02 North Beach Middle Paso Robles 4/15/2008 3.17 Flush Top Flush Mount 10.70 7.53 32S/12E-24B02 North Beach Middle Paso Robles 10/18/2007 3.75 Flush Top Flush Mount 10.70 6.95 32S/12E-24B02 North Beach Middle Paso Robles 4/17/2007 3.34 Flush Top Flush Mount 10.70 7.36 32S/12E-24B02 North Beach Middle Paso Robles 10/19/2006 3.40 Flush Top Flush Mount 10.70 7.30 32S/12E-24B02 North Beach Middle Paso Robles 4/25/2006 2.65 Flush Top Flush Mount 10.70 8.05 32S/12E-24B02 North Beach Middle Paso Robles 10/7/2005 3.10 Flush Top Flush Mount 10.70 7.60 32S/12E-24B02 North Beach Middle Paso Robles 4/28/2005 0.92 Flush Top Flush Mount 10.70 9.78 32S/12E-24B02 North Beach Middle Paso Robles 10/29/2004 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 4/8/2004 3.50 Flush Top Flush Mount 10.70 7.20 32S/12E-24B02 North Beach Middle Paso Robles 10/14/2002 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 4/9/2002 3.30 Flush Top Flush Mount 10.70 7.40 32S/12E-24B02 North Beach Middle Paso Robles 10/5/2001 2.40 Flush Top Flush Mount 10.70 8.30 32S/12E-24B02 North Beach Middle Paso Robles 4/23/2001 2.80 Flush Top Flush Mount 10.70 7.90 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B02 North Beach Middle Paso Robles 4/24/2000 3.40 Flush Top Flush Mount 10.70 7.30 32S/12E-24B02 North Beach Middle Paso Robles 10/29/1999 2.90 Flush Top Flush Mount 10.70 7.80 32S/12E-24B02 North Beach Middle Paso Robles 4/15/1999 2.30 Flush Top Flush Mount 10.70 8.40 32S/12E-24B02 North Beach Middle Paso Robles 10/20/1998 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B02 North Beach Middle Paso Robles 4/23/1998 2.30 Flush Top Flush Mount 10.70 8.40 32S/12E-24B02 North Beach Middle Paso Robles 10/22/1997 2.70 Flush Top Flush Mount 10.70 8.00 32S/12E-24B02 North Beach Middle Paso Robles 4/29/1997 3.59 Flush Top Flush Mount 10.70 7.11 32S/12E-24B02 North Beach Middle Paso Robles 10/23/1996 3.68 Flush Top Flush Mount 10.70 7.02 32S/12E-24B02 North Beach Middle Paso Robles 4/29/1996 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B02 North Beach Middle Paso Robles 10/10/1995 3.80 Flush Top Flush Mount 10.70 6.90 32S/12E-24B02 North Beach Middle Paso Robles 4/19/1995 3.39 Flush Top Flush Mount 10.70 7.31 32S/12E-24B02 North Beach Middle Paso Robles 11/1/1994 3.88 Flush Top Flush Mount 10.70 6.82 32S/12E-24B02 North Beach Middle Paso Robles 4/11/1994 3.54 Flush Top Flush Mount 10.70 7.16 32S/12E-24B02 North Beach Middle Paso Robles 10/13/1993 3.49 Flush Top Flush Mount 10.70 7.21 32S/12E-24B02 North Beach Middle Paso Robles 4/8/1993 3.23 Flush Top Flush Mount 10.70 7.47 32S/12E-24B02 North Beach Middle Paso Robles 11/4/1992 4.60 Flush Top Flush Mount 10.70 6.10 32S/12E-24B02 North Beach Middle Paso Robles 4/21/1992 4.35 Flush Top Flush Mount 10.70 6.35 32S/12E-24B02 North Beach Middle Paso Robles 10/11/1991 4.86 Flush Top Flush Mount 10.70 5.84 32S/12E-24B02 North Beach Middle Paso Robles 4/19/1991 4.22 Flush Top Flush Mount 10.70 6.48 32S/12E-24B02 North Beach Middle Paso Robles 10/11/1990 4.66 Flush Top Flush Mount 10.70 6.04 32S/12E-24B02 North Beach Middle Paso Robles 4/24/1990 4.54 Flush Top Flush Mount 10.70 6.16 32S/12E-24B02 North Beach Middle Paso Robles 10/4/1989 4.31 Flush Top Flush Mount 10.70 6.39 32S/12E-24B02 North Beach Middle Paso Robles 4/17/1989 4.13 Flush Top Flush Mount 10.70 6.57 32S/12E-24B02 North Beach Middle Paso Robles 10/20/1988 4.40 Flush Top Flush Mount 10.70 6.30 32S/12E-24B02 North Beach Middle Paso Robles 4/29/1988 3.86 Flush Top Flush Mount 10.70 6.84 32S/12E-24B02 North Beach Middle Paso Robles 4/21/1988 3.93 Flush Top Flush Mount 10.70 6.77 32S/12E-24B02 North Beach Middle Paso Robles 10/19/1987 3.97 Flush Top Flush Mount 10.70 6.73 32S/12E-24B02 North Beach Middle Paso Robles 4/13/1987 2.68 Flush Top Flush Mount 10.70 8.02 32S/12E-24B02 North Beach Middle Paso Robles 10/31/1986 3.70 Flush Top Flush Mount 10.70 7.00 32S/12E-24B02 North Beach Middle Paso Robles 4/27/1986 3.65 Flush Top Flush Mount 10.70 7.05 32S/12E-24B02 North Beach Middle Paso Robles 10/18/1985 3.50 Flush Top Flush Mount 10.70 7.20 32S/12E-24B02 North Beach Middle Paso Robles 4/22/1985 3.30 Flush Top Flush Mount 10.70 7.40 32S/12E-24B02 North Beach Middle Paso Robles 10/29/1984 3.26 Flush Top Flush Mount 10.70 7.44 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B02 North Beach Middle Paso Robles 10/28/1983 2.68 Flush Top Flush Mount 10.70 8.02 32S/12E-24B02 North Beach Middle Paso Robles 5/6/1982 3.05 Flush Top Flush Mount 10.70 7.65 32S/12E-24B02 North Beach Middle Paso Robles 10/19/1981 3.51 Flush Top Flush Mount 10.70 7.19 32S/12E-24B02 North Beach Middle Paso Robles 4/21/1981 3.04 Flush Top Flush Mount 10.70 7.66 32S/12E-24B02 North Beach Middle Paso Robles 10/21/1980 3.50 Flush Top Flush Mount 10.70 7.20 32S/12E-24B02 North Beach Middle Paso Robles 5/9/1980 3.51 Flush Top Flush Mount 10.70 7.19 32S/12E-24B02 North Beach Middle Paso Robles 11/7/1979 2.72 Flush Top Flush Mount 10.70 7.98 32S/12E-24B02 North Beach Middle Paso Robles 4/17/1979 2.90 Flush Top Flush Mount 10.70 7.80 32S/12E-24B02 North Beach Middle Paso Robles 12/4/1978 2.55 Flush Top Flush Mount 10.70 8.15 32S/12E-24B02 North Beach Middle Paso Robles 5/4/1978 2.00 Flush Top Flush Mount 10.70 8.70 32S/12E-24B02 North Beach Middle Paso Robles 11/7/1977 3.45 Flush Top Flush Mount 10.70 7.25 32S/12E-24B02 North Beach Middle Paso Robles 5/17/1977 3.52 Flush Top Flush Mount 10.70 7.18 32S/12E-24B02 North Beach Middle Paso Robles 6/9/1976 9.89 Flush Top Flush Mount 10.70 0.81 32S/12E-24B02 North Beach Middle Paso Robles 1/14/1976 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 7/7/1975 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 4/17/1975 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 6/7/1974 2.00 Flush Top Flush Mount 10.70 8.70 32S/12E-24B02 North Beach Middle Paso Robles 9/20/1973 3.32 Flush Top Flush Mount 10.70 7.38 32S/12E-24B02 North Beach Middle Paso Robles 6/29/1972 3.05 Flush Top Flush Mount 10.70 7.65 32S/12E-24B02 North Beach Middle Paso Robles 3/2/1972 2.80 Flush Top Flush Mount 10.70 7.90 32S/12E-24B02 North Beach Middle Paso Robles 2/29/1972 2.62 Flush Top Flush Mount 10.70 8.08 32S/12E-24B02 North Beach Middle Paso Robles 11/29/1971 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 8/25/1971 3.40 Flush Top Flush Mount 10.70 7.30 32S/12E-24B02 North Beach Middle Paso Robles 6/2/1971 3.10 Flush Top Flush Mount 10.70 7.60 32S/12E-24B02 North Beach Middle Paso Robles 12/15/1970 2.65 Flush Top Flush Mount 10.70 8.05 32S/12E-24B02 North Beach Middle Paso Robles 8/4/1970 3.19 Flush Top Flush Mount 10.70 7.51 32S/12E-24B02 North Beach Middle Paso Robles 6/3/1970 3.17 Flush Top Flush Mount 10.70 7.53 32S/12E-24B02 North Beach Middle Paso Robles 3/27/1970 2.70 Flush Top Flush Mount 10.70 8.00 32S/12E-24B02 North Beach Middle Paso Robles 1/29/1970 2.62 Flush Top Flush Mount 10.70 8.08 32S/12E-24B02 North Beach Middle Paso Robles 10/3/1969 3.33 Flush Top Flush Mount 10.70 7.37 32S/12E-24B02 North Beach Middle Paso Robles 7/23/1969 4.00 Flush Top Flush Mount 10.70 6.70 32S/12E-24B02 North Beach Middle Paso Robles 6/24/1969 4.00 Flush Top Flush Mount 10.70 6.70 32S/12E-24B02 North Beach Middle Paso Robles 5/22/1969 4.00 Flush Top Flush Mount 10.70 6.70 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B02 North Beach Middle Paso Robles 4/18/1969 2.58 Flush Top Flush Mount 10.70 8.12 32S/12E-24B02 North Beach Middle Paso Robles 1/15/1969 2.55 Flush Top Flush Mount 10.70 8.15 32S/12E-24B02 North Beach Middle Paso Robles 12/12/1968 3.00 Flush Top Flush Mount 10.70 7.70 32S/12E-24B02 North Beach Middle Paso Robles 11/14/1968 2.89 Flush Top Flush Mount 10.70 1.97 32S/12E-24B02 North Beach Middle Paso Robles 10/17/1968 3.26 Flush Top Flush Mount 10.70 7.44 32S/12E-24B02 North Beach Middle Paso Robles 9/14/1968 4.25 Flush Top Flush Mount 10.70 6.45 32S/12E-24B02 North Beach Middle Paso Robles 8/13/1968 3.52 Flush Top Flush Mount 10.70 7.18 32S/12E-24B02 North Beach Middle Paso Robles 7/22/1968 3.65 Flush Top Flush Mount 10.70 7.05 32S/12E-24B02 North Beach Middle Paso Robles 6/24/1968 3.50 Flush Top Flush Mount 10.70 7.20 32S/12E-24B02 North Beach Middle Paso Robles 5/30/1968 4.65 Flush Top Flush Mount 10.70 6.05 32S/12E-24B02 North Beach Middle Paso Robles 4/20/1968 3.05 Flush Top Flush Mount 10.70 7.65 32S/12E-24B02 North Beach Middle Paso Robles 3/21/1968 2.51 Flush Top Flush Mount 10.70 8.19 32S/12E-24B02 North Beach Middle Paso Robles 2/22/1968 2.32 Flush Top Flush Mount 10.70 8.38 32S/12E-24B02 North Beach Middle Paso Robles 1/17/1968 1.75 Flush Top Flush Mount 10.70 8.95 32S/12E-24B02 North Beach Middle Paso Robles 12/8/1967 2.45 Flush Top Flush Mount 10.70 8.25 32S/12E-24B02 North Beach Middle Paso Robles 11/13/1967 2.95 Flush Top Flush Mount 10.70 7.75 32S/12E-24B02 North Beach Middle Paso Robles 10/11/1967 3.70 Flush Top Flush Mount 10.70 7.00 32S/12E-24B02 North Beach Middle Paso Robles 9/5/1967 3.21 Flush Top Flush Mount 10.70 7.49 32S/12E-24B02 North Beach Middle Paso Robles 8/8/1967 3.34 Flush Top Flush Mount 10.70 7.36 32S/12E-24B02 North Beach Middle Paso Robles 7/12/1967 2.71 Flush Top Flush Mount 10.70 7.99 32S/12E-24B02 North Beach Middle Paso Robles 6/1/1967 2.20 Flush Top Flush Mount 10.70 8.50 32S/12E-24B02 North Beach Middle Paso Robles 5/2/1967 2.20 Flush Top Flush Mount 10.70 8.50 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B03 North Beach Deep Careaga 10/5/2021 4.02 Stove Pipe Top of Steel 13.58 9.56 32S/12E-24B03 North Beach Deep Careaga 7/13/2021 4.33 Stove Pipe Top of Steel 13.58 9.25 32S/12E-24B03 North Beach Deep Careaga 4/6/2021 3.33 Stove Pipe Top of Steel 13.58 10.25 32S/12E-24B03 North Beach Deep Careaga 1/6/2021 2.46 Stove Pipe Top of Steel 13.58 11.12 32S/12E-24B03 North Beach Deep Careaga 10/7/2020 4.16 Stove Pipe Top of Steel 13.58 9.42 32S/12E-24B03 North Beach Deep Careaga 7/6/2020 3.00 Stove Pipe Top of Steel 13.58 10.58 32S/12E-24B03 North Beach Deep Careaga 4/7/2020 2.22 Stove Pipe Top of Steel 13.58 11.36 32S/12E-24B03 North Beach Deep Careaga 1/7/2020 2.77 Stove Pipe Top of Steel 13.58 10.81 32S/12E-24B03 North Beach Deep Careaga 10/9/2019 3.36 Stove Pipe Top of Steel 13.58 10.22 32S/12E-24B03 North Beach Deep Careaga 7/9/2019 3.39 Stove Pipe Top of Steel 13.58 10.19 32S/12E-24B03 North Beach Deep Careaga 4/9/2019 3.08 Stove Pipe Top of Steel 13.58 10.50 32S/12E-24B03 North Beach Deep Careaga 1/8/2019 3.12 Stove Pipe Top of Steel 13.58 10.46 32S/12E-24B03 North Beach Deep Careaga 10/9/2018 3.80 Stove Pipe Top of Steel 13.58 9.78 32S/12E-24B03 North Beach Deep Careaga 7/10/2018 4.18 Stove Pipe Top of Steel 13.58 9.40 32S/12E-24B03 North Beach Deep Careaga 4/10/2018 2.55 Stove Pipe Top of Steel 13.58 11.03 32S/12E-24B03 North Beach Deep Careaga 1/10/2018 2.51 Stove Pipe Top of Steel 13.58 11.07 32S/12E-24B03 North Beach Deep Careaga 10/10/2017 3.60 Stove Pipe Top of Steel 13.58 9.98 32S/12E-24B03 North Beach Deep Careaga 7/11/2017 3.75 Stove Pipe Top of Steel 13.58 9.83 32S/12E-24B03 North Beach Deep Careaga 4/11/2017 2.90 Stove Pipe Top of Steel 13.58 10.68 32S/12E-24B03 North Beach Deep Careaga 1/10/2017 2.59 Stove Pipe Top of Steel 13.58 10.99 32S/12E-24B03 North Beach Deep Careaga 10/12/2016 4.70 Stove Pipe Top of Steel 13.58 8.88 32S/12E-24B03 North Beach Deep Careaga 7/19/2016 5.10 Stove Pipe Top of Steel 13.58 8.48 32S/12E-24B03 North Beach Deep Careaga 4/12/2016 3.81 Stove Pipe Top of Steel 13.58 9.77 32S/12E-24B03 North Beach Deep Careaga 1/12/2016 3.01 Stove Pipe Top of Steel 13.58 10.57 32S/12E-24B03 North Beach Deep Careaga 10/13/2015 4.62 Stove Pipe Top of Steel 13.58 8.96 32S/12E-24B03 North Beach Deep Careaga 7/14/2015 4.76 Stove Pipe Top of Steel 13.58 8.82 32S/12E-24B03 North Beach Deep Careaga 4/14/2015 4.86 Stove Pipe Top of Steel 13.58 8.72 32S/12E-24B03 North Beach Deep Careaga 1/13/2015 3.59 Stove Pipe Top of Steel 13.58 9.99 32S/12E-24B03 North Beach Deep Careaga 10/14/2014 4.60 Stove Pipe Top of Steel 13.58 8.98 32S/12E-24B03 North Beach Deep Careaga 7/29/2014 4.78 Stove Pipe Top of Steel 13.58 8.80 32S/12E-24B03 North Beach Deep Careaga 6/4/2014 7.33 Stove Pipe Top of Steel 13.58 6.25 32S/12E-24B03 North Beach Deep Careaga 5/5/2014 5.36 Stove Pipe Top of Steel 13.58 8.22 32S/12E-24B03 North Beach Deep Careaga 4/15/2014 3.94 Stove Pipe Top of Steel 13.58 9.64 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B03 North Beach Deep Careaga 1/14/2014 3.81 Stove Pipe Top of Steel 13.58 9.77 32S/12E-24B03 North Beach Deep Careaga 10/14/2013 4.50 Stove Pipe Top of Steel 13.58 9.08 32S/12E-24B03 North Beach Deep Careaga 7/9/2013 4.48 Stove Pipe Top of Steel 13.58 9.1 32S/12E-24B03 North Beach Deep Careaga 4/10/2013 3.41 Stove Pipe Top of Steel 13.58 10.17 32S/12E-24B03 North Beach Deep Careaga 1/14/2013 2.48 Stove Pipe Top of Steel 13.58 11.1 32S/12E-24B03 North Beach Deep Careaga 10/29/2012 3.01 Stove Pipe Top of Steel 13.58 10.57 32S/12E-24B03 North Beach Deep Careaga 7/23/2012 2.98 Stove Pipe Top of Steel 13.58 10.6 32S/12E-24B03 North Beach Deep Careaga 4/18/2012 1.93 Stove Pipe Top of Steel 13.58 11.65 32S/12E-24B03 North Beach Deep Careaga 1/12/2012 2.15 Stove Pipe Top of Steel 13.58 11.43 32S/12E-24B03 North Beach Deep Careaga 11/21/2011 2.93 Stove Pipe Top of Steel 13.58 10.65 32S/12E-24B03 North Beach Deep Careaga 7/26/2011 3.17 Stove Pipe Top of Steel 13.58 10.41 32S/12E-24B03 North Beach Deep Careaga 4/20/2011 3.25 Stove Pipe Top of Steel 13.58 10.33 32S/12E-24B03 North Beach Deep Careaga 1/24/2011 2.65 Stove Pipe Top of Steel 13.58 10.93 32S/12E-24B03 North Beach Deep Careaga 10/21/2010 4.60 Stove Pipe Top of Steel 13.58 8.98 32S/12E-24B03 North Beach Deep Careaga 7/27/2010 4.54 Stove Pipe Top of Steel 13.58 9.04 32S/12E-24B03 North Beach Deep Careaga 4/27/2010 1.43 Flush Top Flush Mount 10.70 9.27 32S/12E-24B03 North Beach Deep Careaga 1/27/2010 0.94 Flush Top Flush Mount 10.70 9.76 32S/12E-24B03 North Beach Deep Careaga 10/19/2009 0.81 Flush Top Flush Mount 10.70 9.89 32S/12E-24B03 North Beach Deep Careaga 8/19/2009 4.18 Flush Top Flush Mount 10.70 6.52 32S/12E-24B03 North Beach Deep Careaga 5/12/2009 3.18 Flush Top Flush Mount 10.70 7.52 32S/12E-24B03 North Beach Deep Careaga 10/15/2008 3.13 Flush Top Flush Mount 10.70 7.57 32S/12E-24B03 North Beach Deep Careaga 4/15/2008 3.80 Flush Top Flush Mount 10.70 6.90 32S/12E-24B03 North Beach Deep Careaga 10/18/2007 5.40 Flush Top Flush Mount 10.70 5.30 32S/12E-24B03 North Beach Deep Careaga 4/17/2007 3.80 Flush Top Flush Mount 10.70 6.90 32S/12E-24B03 North Beach Deep Careaga 10/19/2006 2.45 Flush Top Flush Mount 10.70 8.25 32S/12E-24B03 North Beach Deep Careaga 4/25/2006 0.15 Flush Top Flush Mount 10.70 10.55 32S/12E-24B03 North Beach Deep Careaga 10/7/2005 3.20 Flush Top Flush Mount 10.70 7.50 32S/12E-24B03 North Beach Deep Careaga 4/28/2005 3.15 Flush Top Flush Mount 10.70 7.55 32S/12E-24B03 North Beach Deep Careaga 10/27/2004 4.00 Flush Top Flush Mount 10.70 6.70 32S/12E-24B03 North Beach Deep Careaga 4/8/2004 0.90 Flush Top Flush Mount 10.70 9.80 32S/12E-24B03 North Beach Deep Careaga 10/14/2002 2.80 Flush Top Flush Mount 10.70 7.90 32S/12E-24B03 North Beach Deep Careaga 4/9/2002 2.90 Flush Top Flush Mount 10.70 7.80 32S/12E-24B03 North Beach Deep Careaga 10/5/2001 0.20 Flush Top Flush Mount 10.70 10.50 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B03 North Beach Deep Careaga 4/23/2001 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 4/24/2000 2.70 Flush Top Flush Mount 10.70 8.00 32S/12E-24B03 North Beach Deep Careaga 10/29/1999 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 4/15/1999 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/20/1998 1.80 Flush Top Flush Mount 10.70 8.90 32S/12E-24B03 North Beach Deep Careaga 10/29/1997 2.15 Flush Top Flush Mount 10.70 8.55 32S/12E-24B03 North Beach Deep Careaga 4/29/1997 2.68 Flush Top Flush Mount 10.70 8.02 32S/12E-24B03 North Beach Deep Careaga 10/23/1996 3.68 Flush Top Flush Mount 10.70 7.02 32S/12E-24B03 North Beach Deep Careaga 4/29/1996 1.60 Flush Top Flush Mount 10.70 9.10 32S/12E-24B03 North Beach Deep Careaga 10/10/1995 2.80 Flush Top Flush Mount 10.70 7.90 32S/12E-24B03 North Beach Deep Careaga 4/19/1995 0.50 Flush Top Flush Mount 10.70 10.20 32S/12E-24B03 North Beach Deep Careaga 11/1/1994 2.95 Flush Top Flush Mount 10.70 7.75 32S/12E-24B03 North Beach Deep Careaga 4/11/1994 1.31 Flush Top Flush Mount 10.70 9.39 32S/12E-24B03 North Beach Deep Careaga 10/13/1993 2.28 Flush Top Flush Mount 10.70 8.42 32S/12E-24B03 North Beach Deep Careaga 4/8/1993 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/4/1992 4.30 Flush Top Flush Mount 10.70 6.40 32S/12E-24B03 North Beach Deep Careaga 4/21/1992 1.70 Flush Top Flush Mount 10.70 9.00 32S/12E-24B03 North Beach Deep Careaga 10/11/1991 3.60 Flush Top Flush Mount 10.70 7.10 32S/12E-24B03 North Beach Deep Careaga 4/19/1991 2.74 Flush Top Flush Mount 10.70 7.96 32S/12E-24B03 North Beach Deep Careaga 10/11/1990 2.65 Flush Top Flush Mount 10.70 8.05 32S/12E-24B03 North Beach Deep Careaga 4/24/1990 2.39 Flush Top Flush Mount 10.70 8.31 32S/12E-24B03 North Beach Deep Careaga 10/4/1989 2.22 Flush Top Flush Mount 10.70 8.48 32S/12E-24B03 North Beach Deep Careaga 4/17/1989 2.73 Flush Top Flush Mount 10.70 7.97 32S/12E-24B03 North Beach Deep Careaga 10/20/1988 2.62 Flush Top Flush Mount 10.70 8.08 32S/12E-24B03 North Beach Deep Careaga 4/29/1988 2.26 Flush Top Flush Mount 10.70 8.44 32S/12E-24B03 North Beach Deep Careaga 10/19/1987 3.36 Flush Top Flush Mount 10.70 7.34 32S/12E-24B03 North Beach Deep Careaga 4/13/1987 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/31/1986 3.18 Flush Top Flush Mount 10.70 7.52 32S/12E-24B03 North Beach Deep Careaga 4/27/1986 3.07 Flush Top Flush Mount 10.70 7.63 32S/12E-24B03 North Beach Deep Careaga 10/18/1985 0.82 Flush Top Flush Mount 10.70 9.88 32S/12E-24B03 North Beach Deep Careaga 4/22/1985 0.40 Flush Top Flush Mount 10.70 10.30 32S/12E-24B03 North Beach Deep Careaga 10/29/1984 1.69 Flush Top Flush Mount 10.70 9.01 32S/12E-24B03 North Beach Deep Careaga 10/19/1981 0.00 Flush Top Flush Mount 10.70 10.70 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B03 North Beach Deep Careaga 4/21/1981 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/21/1980 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 5/9/1980 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/7/1979 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 4/17/1979 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 12/4/1978 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 5/4/1978 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/7/1977 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 5/17/1977 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/9/1976 1.90 Flush Top Flush Mount 10.70 8.80 32S/12E-24B03 North Beach Deep Careaga 5/21/1976 1.33 Flush Top Flush Mount 10.70 9.37 32S/12E-24B03 North Beach Deep Careaga 1/14/1976 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 7/7/1975 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 4/1/1975 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/7/1974 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 9/20/1973 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/29/1972 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 2/29/1972 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/29/1971 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 8/28/1971 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/2/1971 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 3/2/1971 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 12/15/1970 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 8/4/1970 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/3/1970 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 3/27/1970 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 1/29/1970 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/3/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 7/23/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/24/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 5/22/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 4/18/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 2/21/1969 0.00 Flush Top Flush Mount 10.70 10.70 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/12E-24B03 North Beach Deep Careaga 1/15/1969 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 12/12/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/14/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/17/1968 0.72 Flush Top Flush Mount 10.70 9.98 32S/12E-24B03 North Beach Deep Careaga 9/14/1968 0.60 Flush Top Flush Mount 10.70 10.10 32S/12E-24B03 North Beach Deep Careaga 8/13/1968 0.28 Flush Top Flush Mount 10.70 10.42 32S/12E-24B03 North Beach Deep Careaga 7/22/1968 0.48 Flush Top Flush Mount 10.70 10.22 32S/12E-24B03 North Beach Deep Careaga 6/24/1968 0.32 Flush Top Flush Mount 10.70 10.38 32S/12E-24B03 North Beach Deep Careaga 5/30/1968 0.38 Flush Top Flush Mount 10.70 10.32 32S/12E-24B03 North Beach Deep Careaga 4/20/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 3/21/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 2/22/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 1/17/1968 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 12/8/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 11/13/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 10/11/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 9/5/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 8/8/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 7/12/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 6/1/1967 0.00 Flush Top Flush Mount 10.70 10.70 32S/12E-24B03 North Beach Deep Careaga 5/2/1967 0.00 Flush Top Flush Mount 10.70 10.70 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F01 Highway 1 Shallow Alluvium/ Paso Robles 10/5/2021 16.21 Stove Pipe Top of Steel 23.16 6.954166667 32S/13E-30F01 Highway 1 Shallow Alluvium/ Paso Robles 7/13/2021 15.36 Stove Pipe Top of Steel 23.16 7.804166667 32S/13E-30F01 Highway 1 Shallow Alluvium/ Paso Robles 4/6/2021 14.06 Stove Pipe Top of Steel 23.16 9.1 32S/13E-30F01 Highway 1 Shallow Alluvium/ Paso Robles 1/6/2021 14.90 Stove Pipe Top of Steel 23.16 8.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/7/2020 14.89 Stove Pipe Top of Steel 23.16 8.27 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/6/2020 13.98 Stove Pipe Top of Steel 23.16 9.18 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/7/2020 13.04 Stove Pipe Top of Steel 23.16 10.12 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/7/2020 13.80 Stove Pipe Top of Steel 23.16 9.36 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/9/2019 14.78 Stove Pipe Top of Steel 23.16 8.38 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/9/2019 13.60 Stove Pipe Top of Steel 23.16 9.56 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/9/2019 13.03 Stove Pipe Top of Steel 23.16 10.13 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/8/2019 14.54 Stove Pipe Top of Steel 23.16 8.62 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/9/2018 15.23 Stove Pipe Top of Steel 23.16 7.93 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/10/2018 14.81 Stove Pipe Top of Steel 23.16 8.35 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/10/2018 14.03 Stove Pipe Top of Steel 23.16 9.13 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/10/2018 14.40 Stove Pipe Top of Steel 23.16 8.76 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/10/2017 14.65 Stove Pipe Top of Steel 23.16 8.51 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/11/2017 13.73 Stove Pipe Top of Steel 23.16 9.43 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/11/2017 13.25 Stove Pipe Top of Steel 23.16 9.91 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/10/2017 13.99 Stove Pipe Top of Steel 23.16 9.17 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/12/2016 17.08 Stove Pipe Top of Steel 23.16 6.08 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/19/2016 16.42 Stove Pipe Top of Steel 23.16 6.74 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/12/2016 14.83 Stove Pipe Top of Steel 23.16 8.33 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/12/2016 15.00 Stove Pipe Top of Steel 23.16 8.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/13/2015 17.11 Stove Pipe Top of Steel 23.16 6.05 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/14/2015 16.93 Stove Pipe Top of Steel 23.16 6.23 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/14/2015 16.01 Stove Pipe Top of Steel 23.16 7.15 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/13/2015 15.41 Stove Pipe Top of Steel 23.16 7.75 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/14/2014 17.05 Stove Pipe Top of Steel 23.16 6.11 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/29/2014 17.11 Stove Pipe Top of Steel 23.16 6.05 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/4/2014 16.82 Stove Pipe Top of Steel 23.16 6.34 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/15/2014 15.56 Stove Pipe Top of Steel 23.16 7.60 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/14/2014 16.58 Stove Pipe Top of Steel 23.16 6.58 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/14/2013 17.07 Stove Pipe Top of Steel 23.16 6.09 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/9/2013 16.17 Stove Pipe Top of Steel 23.16 6.99 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/10/2013 14.58 Stove Pipe Top of Steel 23.16 8.58 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/14/2013 14.36 Stove Pipe Top of Steel 23.16 8.8 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/30/2012 14.95 Stove Pipe Top of Steel 23.16 8.21 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/24/2012 14.00 Stove Pipe Top of Steel 23.16 9.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/18/2012 13.42 Stove Pipe Top of Steel 23.16 9.74 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/10/2012 13.80 Stove Pipe Top of Steel 23.16 9.36 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/21/2011 13.78 Stove Pipe Top of Steel 23.16 9.38 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/26/2011 13.50 Stove Pipe Top of Steel 23.16 9.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/20/2011 12.82 Stove Pipe Top of Steel 23.16 10.34 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/24/2011 13.33 Stove Pipe Top of Steel 23.16 9.83 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/21/2010 16.55 Stove Pipe Top of Steel 23.16 6.61 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/26/2010 15.68 Stove Pipe Top of Steel 23.16 7.48 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/27/2010 11.02 Stove Pipe Top of Steel 23.16 12.14 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/28/2010 12.73 Stove Pipe Top of Steel 23.16 10.43 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/19/2009 14.33 Stove Pipe Top of Steel 23.16 8.83 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 8/19/2009 14.34 Stove Pipe Top of Steel 23.16 8.82 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/12/2009 12.38 Stove Pipe Top of Steel 23.16 10.78 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/7/2009 11.67 Stove Pipe Top of Steel 23.16 11.49 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/15/2008 15.53 Stove Pipe Top of Steel 23.16 7.63 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/19/2006 12.45 Stove Pipe Top of Steel 23.16 10.71 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/25/2006 11.55 Stove Pipe Top of Steel 23.16 11.61 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/7/2005 12.75 Stove Pipe Top of Steel 23.16 10.41 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/28/2005 10.25 Stove Pipe Top of Steel 23.16 12.91 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/27/2004 14.20 Stove Pipe Top of Steel 23.16 8.96 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/8/2004 10.90 Stove Pipe Top of Steel 23.16 12.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/8/2003 14.90 Stove Pipe Top of Steel 23.16 8.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/14/2002 14.20 Stove Pipe Top of Steel 23.16 8.96 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/9/2002 10.00 Stove Pipe Top of Steel 23.16 13.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/5/2001 11.50 Stove Pipe Top of Steel 23.16 11.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/23/2001 8.90 Stove Pipe Top of Steel 23.16 14.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/16/2000 11.60 Stove Pipe Top of Steel 23.16 11.56 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/24/2000 10.00 Stove Pipe Top of Steel 23.16 13.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/29/1999 11.50 Stove Pipe Top of Steel 23.16 11.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/15/1999 8.40 Stove Pipe Top of Steel 23.16 14.76 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/20/1998 10.70 Stove Pipe Top of Steel 23.16 12.46 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/23/1998 8.80 Stove Pipe Top of Steel 23.16 14.36 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/22/1997 12.07 Stove Pipe Top of Steel 23.16 11.09 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/29/1997 10.21 Stove Pipe Top of Steel 23.16 12.95 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/23/1996 11.70 Stove Pipe Top of Steel 23.16 11.46 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/29/1996 10.50 Stove Pipe Top of Steel 23.16 12.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/11/1995 11.70 Stove Pipe Top of Steel 23.16 11.46 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/19/1995 9.20 Stove Pipe Top of Steel 23.16 13.96 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/1/1994 12.50 Stove Pipe Top of Steel 23.16 10.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/11/1994 10.90 Stove Pipe Top of Steel 23.16 12.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/13/1993 11.86 Stove Pipe Top of Steel 23.16 11.30 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/8/1993 10.01 Stove Pipe Top of Steel 23.16 13.15 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/4/1992 12.50 Stove Pipe Top of Steel 23.16 10.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/21/1992 10.70 Stove Pipe Top of Steel 23.16 12.46 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/11/1991 13.37 Stove Pipe Top of Steel 23.16 9.79 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/19/1991 12.05 Stove Pipe Top of Steel 23.16 11.11 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/11/1990 14.90 Stove Pipe Top of Steel 23.16 8.26 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/24/1990 12.35 Stove Pipe Top of Steel 23.16 10.81 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/4/1989 13.52 Stove Pipe Top of Steel 23.16 9.64 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/17/1989 11.82 Stove Pipe Top of Steel 23.16 11.34 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/20/1988 13.36 Stove Pipe Top of Steel 23.16 9.80 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/29/1988 11.66 Stove Pipe Top of Steel 23.16 11.50 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/21/1988 11.73 Stove Pipe Top of Steel 23.16 11.43 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/19/1987 13.09 Stove Pipe Top of Steel 23.16 10.07 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/13/1987 11.31 Stove Pipe Top of Steel 23.16 11.85 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/31/1986 12.19 Stove Pipe Top of Steel 23.16 10.97 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/15/1986 11.05 Stove Pipe Top of Steel 23.16 12.11 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/18/1985 13.15 Stove Pipe Top of Steel 23.16 10.01 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/22/1985 11.10 Stove Pipe Top of Steel 23.16 12.06 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/15/1984 11.32 Stove Pipe Top of Steel 23.16 11.84 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/28/1983 10.05 Stove Pipe Top of Steel 23.16 13.11 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/6/1982 10.14 Stove Pipe Top of Steel 23.16 13.02 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/19/1981 11.43 Stove Pipe Top of Steel 23.16 11.73 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/21/1981 10.04 Stove Pipe Top of Steel 23.16 13.12 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/10/1980 11.40 Stove Pipe Top of Steel 23.16 11.76 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/9/1980 10.53 Stove Pipe Top of Steel 23.16 12.63 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/7/1979 11.21 Stove Pipe Top of Steel 23.16 11.95 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/17/1979 10.19 Stove Pipe Top of Steel 23.16 12.97 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 12/4/1978 10.41 Stove Pipe Top of Steel 23.16 12.75 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/24/1978 9.50 Stove Pipe Top of Steel 23.16 13.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/7/1977 12.97 Stove Pipe Top of Steel 23.16 10.19 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/17/1977 12.09 Stove Pipe Top of Steel 23.16 11.07 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/9/1976 12.25 Stove Pipe Top of Steel 23.16 10.91 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/14/1976 11.40 Stove Pipe Top of Steel 23.16 11.76 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/4/1976 11.00 Stove Pipe Top of Steel 23.16 12.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/7/1975 13.42 Stove Pipe Top of Steel 23.16 9.74 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/1/1975 10.00 Stove Pipe Top of Steel 23.16 13.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/7/1974 10.00 Stove Pipe Top of Steel 23.16 13.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/1/1974 10.50 Stove Pipe Top of Steel 23.16 12.66 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/20/1973 11.67 Stove Pipe Top of Steel 23.16 11.49 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/29/1972 16.00 Stove Pipe Top of Steel 23.16 7.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 2/23/1972 10.00 Stove Pipe Top of Steel 23.16 13.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/29/1971 11.10 Stove Pipe Top of Steel 23.16 12.06 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 8/26/1971 11.43 Stove Pipe Top of Steel 23.16 11.73 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/2/1971 10.94 Stove Pipe Top of Steel 23.16 12.22 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 3/2/1971 10.29 Stove Pipe Top of Steel 23.16 12.87 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 12/15/1970 10.56 Stove Pipe Top of Steel 23.16 12.60 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 8/4/1970 19.00 Stove Pipe Top of Steel 23.16 4.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/3/1970 14.00 Stove Pipe Top of Steel 23.16 9.16 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 3/27/1970 12.07 Stove Pipe Top of Steel 23.16 11.09 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/29/1970 11.80 Stove Pipe Top of Steel 23.16 11.36 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/3/1969 14.60 Stove Pipe Top of Steel 23.16 8.56 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/23/1969 13.75 Stove Pipe Top of Steel 23.16 9.41 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/24/1969 12.93 Stove Pipe Top of Steel 23.16 10.23 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/22/1969 12.16 Stove Pipe Top of Steel 23.16 11.00 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/18/1969 11.24 Stove Pipe Top of Steel 23.16 11.92 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 3/20/1969 10.33 Stove Pipe Top of Steel 23.16 12.83 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 2/21/1969 11.63 Stove Pipe Top of Steel 23.16 11.53 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/15/1969 13.60 Stove Pipe Top of Steel 23.16 9.56 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 12/12/1968 15.07 Stove Pipe Top of Steel 23.16 8.09 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/14/1968 16.28 Stove Pipe Top of Steel 23.16 6.88 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/17/1968 17.37 Stove Pipe Top of Steel 23.16 5.79 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 9/14/1968 18.80 Stove Pipe Top of Steel 23.16 4.36 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 8/13/1968 17.96 Stove Pipe Top of Steel 23.16 5.20 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/22/1968 17.70 Stove Pipe Top of Steel 23.16 5.46 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/24/1968 16.95 Stove Pipe Top of Steel 23.16 6.21 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/30/1968 5.47 Stove Pipe Top of Steel 23.16 17.69 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 4/20/1968 13.51 Stove Pipe Top of Steel 23.16 9.65 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 3/21/1968 12.10 Stove Pipe Top of Steel 23.16 11.06 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 2/22/1968 12.29 Stove Pipe Top of Steel 23.16 10.87 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 1/17/1968 12.67 Stove Pipe Top of Steel 23.16 10.49 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 12/8/1967 13.37 Stove Pipe Top of Steel 23.16 9.79 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 11/13/1967 15.36 Stove Pipe Top of Steel 23.16 7.80 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 10/9/1967 15.41 Stove Pipe Top of Steel 23.16 7.75 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 9/5/1967 15.34 Stove Pipe Top of Steel 23.16 7.82 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 8/8/1967 15.04 Stove Pipe Top of Steel 23.16 8.12 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 7/12/1967 14.29 Stove Pipe Top of Steel 23.16 8.87 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 6/1/1967 13.20 Stove Pipe Top of Steel 23.16 9.96 32S/13E-30F01 Highway 1 Shallow Alluvium / Paso Robles 5/2/1967 12.20 Stove Pipe Top of Steel 23.16 10.96 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F02 Highway 1 Middle Paso Robles 10/5/2021 16.44 Stove Pipe Top of Steel 23.16 6.725 32S/13E-30F02 Highway 1 Middle Paso Robles 7/13/2021 17.10 Stove Pipe Top of Steel 23.16 6.065 32S/13E-30F02 Highway 1 Middle Paso Robles 4/6/2021 14.87 Stove Pipe Top of Steel 23.16 8.29 32S/13E-30F02 Highway 1 Middle Paso Robles 1/6/2021 15.96 Stove Pipe Top of Steel 23.16 7.2 32S/13E-30F02 Highway 1 Middle Paso Robles 10/7/2020 15.80 Stove Pipe Top of Steel 23.16 7.37 32S/13E-30F02 Highway 1 Middle Paso Robles 7/6/2020 14.19 Stove Pipe Top of Steel 23.16 8.98 32S/13E-30F02 Highway 1 Middle Paso Robles 4/7/2020 14.23 Stove Pipe Top of Steel 23.16 8.94 32S/13E-30F02 Highway 1 Middle Paso Robles 1/7/2020 14.99 Stove Pipe Top of Steel 23.16 8.17 32S/13E-30F02 Highway 1 Middle Paso Robles 10/9/2019 15.55 Stove Pipe Top of Steel 23.16 7.61 32S/13E-30F02 Highway 1 Middle Paso Robles 7/9/2019 14.90 Stove Pipe Top of Steel 23.16 8.26 32S/13E-30F02 Highway 1 Middle Paso Robles 4/9/2019 14.87 Stove Pipe Top of Steel 23.16 8.29 32S/13E-30F02 Highway 1 Middle Paso Robles 1/8/2019 15.11 Stove Pipe Top of Steel 23.16 8.05 32S/13E-30F02 Highway 1 Middle Paso Robles 10/9/2018 15.94 Stove Pipe Top of Steel 23.16 7.22 32S/13E-30F02 Highway 1 Middle Paso Robles 7/10/2018 15.90 Stove Pipe Top of Steel 23.16 7.26 32S/13E-30F02 Highway 1 Middle Paso Robles 4/10/2018 14.62 Stove Pipe Top of Steel 23.16 8.54 32S/13E-30F02 Highway 1 Middle Paso Robles 1/10/2018 14.79 Stove Pipe Top of Steel 23.16 8.37 32S/13E-30F02 Highway 1 Middle Paso Robles 10/10/2017 15.45 Stove Pipe Top of Steel 23.16 7.71 32S/13E-30F02 Highway 1 Middle Paso Robles 7/11/2017 15.30 Stove Pipe Top of Steel 23.16 7.86 32S/13E-30F02 Highway 1 Middle Paso Robles 4/11/2017 14.27 Stove Pipe Top of Steel 23.16 8.89 32S/13E-30F02 Highway 1 Middle Paso Robles 1/10/2017 14.53 Stove Pipe Top of Steel 23.16 8.63 32S/13E-30F02 Highway 1 Middle Paso Robles 10/12/2016 17.35 Stove Pipe Top of Steel 23.16 5.81 32S/13E-30F02 Highway 1 Middle Paso Robles 7/19/2016 17.63 Stove Pipe Top of Steel 23.16 5.53 32S/13E-30F02 Highway 1 Middle Paso Robles 4/12/2016 15.98 Stove Pipe Top of Steel 23.16 7.18 32S/13E-30F02 Highway 1 Middle Paso Robles 1/12/2016 15.29 Stove Pipe Top of Steel 23.16 7.87 32S/13E-30F02 Highway 1 Middle Paso Robles 10/13/2015 17.29 Stove Pipe Top of Steel 23.16 5.87 32S/13E-30F02 Highway 1 Middle Paso Robles 7/14/2015 17.44 Stove Pipe Top of Steel 23.16 5.72 32S/13E-30F02 Highway 1 Middle Paso Robles 4/14/2015 16.94 Stove Pipe Top of Steel 23.16 6.22 32S/13E-30F02 Highway 1 Middle Paso Robles 1/13/2015 16.41 Stove Pipe Top of Steel 23.16 6.75 32S/13E-30F02 Highway 1 Middle Paso Robles 10/14/2014 17.33 Stove Pipe Top of Steel 23.16 5.83 32S/13E-30F02 Highway 1 Middle Paso Robles 7/29/2014 17.31 Stove Pipe Top of Steel 23.16 5.85 32S/13E-30F02 Highway 1 Middle Paso Robles 6/4/2014 18.00 Stove Pipe Top of Steel 23.16 5.16 32S/13E-30F02 Highway 1 Middle Paso Robles 4/15/2014 16.27 Stove Pipe Top of Steel 23.16 6.89 32S/13E-30F02 Highway 1 Middle Paso Robles 1/14/2014 17.01 Stove Pipe Top of Steel 23.16 6.15 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F02 Highway 1 Middle Paso Robles 10/14/2013 17.52 Stove Pipe Top of Steel 23.16 5.64 32S/13E-30F02 Highway 1 Middle Paso Robles 7/9/2013 17.15 Stove Pipe Top of Steel 23.16 6.01 32S/13E-30F02 Highway 1 Middle Paso Robles 4/10/2013 15.76 Stove Pipe Top of Steel 23.16 7.4 32S/13E-30F02 Highway 1 Middle Paso Robles 1/14/2013 15.01 Stove Pipe Top of Steel 23.16 8.15 32S/13E-30F02 Highway 1 Middle Paso Robles 10/30/2012 15.27 Stove Pipe Top of Steel 23.16 7.89 32S/13E-30F02 Highway 1 Middle Paso Robles 7/24/2012 14.82 Stove Pipe Top of Steel 23.16 8.34 32S/13E-30F02 Highway 1 Middle Paso Robles 4/18/2012 14.38 Stove Pipe Top of Steel 23.16 8.78 32S/13E-30F02 Highway 1 Middle Paso Robles 1/12/2012 14.31 Stove Pipe Top of Steel 23.16 8.85 32S/13E-30F02 Highway 1 Middle Paso Robles 11/21/2011 14.94 Stove Pipe Top of Steel 23.16 8.22 32S/13E-30F02 Highway 1 Middle Paso Robles 7/26/2011 14.46 Stove Pipe Top of Steel 23.16 8.7 32S/13E-30F02 Highway 1 Middle Paso Robles 4/20/2011 14.23 Stove Pipe Top of Steel 23.16 8.93 32S/13E-30F02 Highway 1 Middle Paso Robles 1/24/2011 14.36 Stove Pipe Top of Steel 23.16 8.80 32S/13E-30F02 Highway 1 Middle Paso Robles 10/21/2010 7.39 Stove Pipe Top of Steel 23.16 15.77 32S/13E-30F02 Highway 1 Middle Paso Robles 7/26/2010 16.21 Stove Pipe Top of Steel 23.16 6.95 32S/13E-30F02 Highway 1 Middle Paso Robles 4/27/2010 12.14 Flush Top Flush Mount 20.36 8.22 32S/13E-30F02 Highway 1 Middle Paso Robles 1/28/2010 13.09 Flush Top Flush Mount 20.36 7.27 32S/13E-30F02 Highway 1 Middle Paso Robles 10/19/2009 14.36 Flush Top Flush Mount 20.36 6.00 32S/13E-30F02 Highway 1 Middle Paso Robles 8/19/2009 14.81 Flush Top Flush Mount 20.36 5.55 32S/13E-30F02 Highway 1 Middle Paso Robles 5/12/2009 14.34 Flush Top Flush Mount 20.36 6.02 32S/13E-30F02 Highway 1 Middle Paso Robles 4/7/2009 12.28 Flush Top Flush Mount 20.36 8.08 32S/13E-30F02 Highway 1 Middle Paso Robles 10/15/2008 15.34 Flush Top Flush Mount 20.36 5.02 32S/13E-30F02 Highway 1 Middle Paso Robles 4/15/2008 12.40 Flush Top Flush Mount 20.36 7.96 32S/13E-30F02 Highway 1 Middle Paso Robles 10/18/2007 15.35 Flush Top Flush Mount 20.36 5.01 32S/13E-30F02 Highway 1 Middle Paso Robles 4/17/2007 12.43 Flush Top Flush Mount 20.36 7.93 32S/13E-30F02 Highway 1 Middle Paso Robles 10/19/2006 12.85 Flush Top Flush Mount 20.36 7.51 32S/13E-30F02 Highway 1 Middle Paso Robles 4/25/2006 9.85 Flush Top Flush Mount 20.36 10.51 32S/13E-30F02 Highway 1 Middle Paso Robles 10/7/2005 12.15 Flush Top Flush Mount 20.36 8.21 32S/13E-30F02 Highway 1 Middle Paso Robles 4/28/2005 11.35 Flush Top Flush Mount 20.36 9.01 32S/13E-30F02 Highway 1 Middle Paso Robles 10/27/2004 14.50 Flush Top Flush Mount 20.36 5.86 32S/13E-30F02 Highway 1 Middle Paso Robles 4/8/2004 10.40 Flush Top Flush Mount 20.36 9.96 32S/13E-30F02 Highway 1 Middle Paso Robles 10/14/2002 14.30 Flush Top Flush Mount 20.36 6.06 32S/13E-30F02 Highway 1 Middle Paso Robles 4/9/2002 11.10 Flush Top Flush Mount 20.36 9.26 32S/13E-30F02 Highway 1 Middle Paso Robles 10/5/2001 12.30 Flush Top Flush Mount 20.36 8.06 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F02 Highway 1 Middle Paso Robles 4/23/2001 10.10 Flush Top Flush Mount 20.36 10.26 32S/13E-30F02 Highway 1 Middle Paso Robles 10/16/2000 12.30 Flush Top Flush Mount 20.36 8.06 32S/13E-30F02 Highway 1 Middle Paso Robles 4/24/2000 11.00 Flush Top Flush Mount 20.36 9.36 32S/13E-30F02 Highway 1 Middle Paso Robles 10/29/1999 12.20 Flush Top Flush Mount 20.36 8.16 32S/13E-30F02 Highway 1 Middle Paso Robles 4/15/1999 10.30 Flush Top Flush Mount 20.36 10.06 32S/13E-30F02 Highway 1 Middle Paso Robles 10/20/1998 10.70 Flush Top Flush Mount 20.36 9.66 32S/13E-30F02 Highway 1 Middle Paso Robles 4/23/1998 8.30 Flush Top Flush Mount 20.36 12.06 32S/13E-30F02 Highway 1 Middle Paso Robles 10/22/1997 12.30 Flush Top Flush Mount 20.36 8.06 32S/13E-30F02 Highway 1 Middle Paso Robles 4/29/1997 11.20 Flush Top Flush Mount 20.36 9.16 32S/13E-30F02 Highway 1 Middle Paso Robles 10/23/1996 12.05 Flush Top Flush Mount 20.36 8.31 32S/13E-30F02 Highway 1 Middle Paso Robles 4/29/1996 10.80 Flush Top Flush Mount 20.36 9.56 32S/13E-30F02 Highway 1 Middle Paso Robles 10/11/1995 11.90 Flush Top Flush Mount 20.36 8.46 32S/13E-30F02 Highway 1 Middle Paso Robles 4/19/1995 10.05 Flush Top Flush Mount 20.36 10.31 32S/13E-30F02 Highway 1 Middle Paso Robles 11/1/1994 13.90 Flush Top Flush Mount 20.36 6.46 32S/13E-30F02 Highway 1 Middle Paso Robles 4/11/1994 11.79 Flush Top Flush Mount 20.36 8.57 32S/13E-30F02 Highway 1 Middle Paso Robles 10/13/1993 12.76 Flush Top Flush Mount 20.36 7.60 32S/13E-30F02 Highway 1 Middle Paso Robles 4/8/1993 10.48 Flush Top Flush Mount 20.36 9.88 32S/13E-30F02 Highway 1 Middle Paso Robles 11/4/1992 13.30 Flush Top Flush Mount 20.36 7.06 32S/13E-30F02 Highway 1 Middle Paso Robles 4/21/1992 9.45 Flush Top Flush Mount 20.36 10.91 32S/13E-30F02 Highway 1 Middle Paso Robles 10/11/1991 13.42 Flush Top Flush Mount 20.36 6.94 32S/13E-30F02 Highway 1 Middle Paso Robles 4/19/1991 13.05 Flush Top Flush Mount 20.36 7.31 32S/13E-30F02 Highway 1 Middle Paso Robles 10/11/1990 14.71 Flush Top Flush Mount 20.36 5.65 32S/13E-30F02 Highway 1 Middle Paso Robles 4/24/1990 13.15 Flush Top Flush Mount 20.36 7.21 32S/13E-30F02 Highway 1 Middle Paso Robles 10/4/1989 13.71 Flush Top Flush Mount 20.36 6.65 32S/13E-30F02 Highway 1 Middle Paso Robles 4/17/1989 14.50 Flush Top Flush Mount 20.36 5.86 32S/13E-30F02 Highway 1 Middle Paso Robles 10/20/1988 14.00 Flush Top Flush Mount 20.36 6.36 32S/13E-30F02 Highway 1 Middle Paso Robles 4/29/1988 12.85 Flush Top Flush Mount 20.36 7.51 32S/13E-30F02 Highway 1 Middle Paso Robles 4/21/1988 13.23 Flush Top Flush Mount 20.36 7.13 32S/13E-30F02 Highway 1 Middle Paso Robles 10/19/1987 13.97 Flush Top Flush Mount 20.36 6.39 32S/13E-30F02 Highway 1 Middle Paso Robles 4/13/1987 11.96 Flush Top Flush Mount 20.36 8.40 32S/13E-30F02 Highway 1 Middle Paso Robles 10/31/1986 12.56 Flush Top Flush Mount 20.36 7.80 32S/13E-30F02 Highway 1 Middle Paso Robles 4/15/1986 11.97 Flush Top Flush Mount 20.36 8.39 32S/13E-30F02 Highway 1 Middle Paso Robles 10/18/1985 13.40 Flush Top Flush Mount 20.36 6.96 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F02 Highway 1 Middle Paso Robles 4/22/1985 11.80 Flush Top Flush Mount 20.36 8.56 32S/13E-30F02 Highway 1 Middle Paso Robles 10/15/1984 11.48 Flush Top Flush Mount 20.36 8.88 32S/13E-30F02 Highway 1 Middle Paso Robles 10/28/1983 10.10 Flush Top Flush Mount 20.36 10.26 32S/13E-30F02 Highway 1 Middle Paso Robles 5/6/1982 10.95 Flush Top Flush Mount 20.36 9.41 32S/13E-30F02 Highway 1 Middle Paso Robles 10/19/1981 11.70 Flush Top Flush Mount 20.36 8.66 32S/13E-30F02 Highway 1 Middle Paso Robles 4/21/1981 10.73 Flush Top Flush Mount 20.36 9.63 32S/13E-30F02 Highway 1 Middle Paso Robles 10/10/1980 11.75 Flush Top Flush Mount 20.36 8.61 32S/13E-30F02 Highway 1 Middle Paso Robles 5/9/1980 11.88 Flush Top Flush Mount 20.36 8.48 32S/13E-30F02 Highway 1 Middle Paso Robles 11/7/1979 11.20 Flush Top Flush Mount 20.36 9.16 32S/13E-30F02 Highway 1 Middle Paso Robles 4/17/1979 11.25 Flush Top Flush Mount 20.36 9.11 32S/13E-30F02 Highway 1 Middle Paso Robles 12/4/1978 10.45 Flush Top Flush Mount 20.36 9.91 32S/13E-30F02 Highway 1 Middle Paso Robles 4/24/1978 10.15 Flush Top Flush Mount 20.36 10.21 32S/13E-30F02 Highway 1 Middle Paso Robles 11/7/1977 13.65 Flush Top Flush Mount 20.36 6.71 32S/13E-30F02 Highway 1 Middle Paso Robles 5/17/1977 13.19 Flush Top Flush Mount 20.36 7.17 32S/13E-30F02 Highway 1 Middle Paso Robles 6/9/1976 12.80 Flush Top Flush Mount 20.36 7.56 32S/13E-30F02 Highway 1 Middle Paso Robles 1/14/1976 12.00 Flush Top Flush Mount 20.36 8.36 32S/13E-30F02 Highway 1 Middle Paso Robles 7/7/1975 12.00 Flush Top Flush Mount 20.36 8.36 32S/13E-30F02 Highway 1 Middle Paso Robles 4/1/1975 10.00 Flush Top Flush Mount 20.36 10.36 32S/13E-30F02 Highway 1 Middle Paso Robles 6/7/1974 10.94 Flush Top Flush Mount 20.36 9.42 32S/13E-30F02 Highway 1 Middle Paso Robles 9/20/1973 11.85 Flush Top Flush Mount 20.36 8.51 32S/13E-30F02 Highway 1 Middle Paso Robles 6/29/1972 15.00 Flush Top Flush Mount 20.36 5.36 32S/13E-30F02 Highway 1 Middle Paso Robles 2/23/1972 11.00 Flush Top Flush Mount 20.36 9.36 32S/13E-30F02 Highway 1 Middle Paso Robles 11/29/1971 12.35 Flush Top Flush Mount 20.36 8.01 32S/13E-30F02 Highway 1 Middle Paso Robles 8/26/1971 12.10 Flush Top Flush Mount 20.36 8.26 32S/13E-30F02 Highway 1 Middle Paso Robles 6/2/1971 12.15 Flush Top Flush Mount 20.36 8.21 32S/13E-30F02 Highway 1 Middle Paso Robles 3/2/1971 11.35 Flush Top Flush Mount 20.36 9.01 32S/13E-30F02 Highway 1 Middle Paso Robles 12/15/1970 11.39 Flush Top Flush Mount 20.36 8.97 32S/13E-30F02 Highway 1 Middle Paso Robles 6/3/1970 14.81 Flush Top Flush Mount 20.36 5.55 32S/13E-30F02 Highway 1 Middle Paso Robles 3/27/1970 13.65 Flush Top Flush Mount 20.36 6.71 32S/13E-30F02 Highway 1 Middle Paso Robles 1/29/1970 12.72 Flush Top Flush Mount 20.36 7.64 32S/13E-30F02 Highway 1 Middle Paso Robles 10/3/1969 14.81 Flush Top Flush Mount 20.36 5.55 32S/13E-30F02 Highway 1 Middle Paso Robles 7/23/1969 14.90 Flush Top Flush Mount 20.36 5.46 32S/13E-30F02 Highway 1 Middle Paso Robles 6/24/1969 13.99 Flush Top Flush Mount 20.36 6.37 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F02 Highway 1 Middle Paso Robles 5/22/1969 13.83 Flush Top Flush Mount 20.36 6.53 32S/13E-30F02 Highway 1 Middle Paso Robles 4/18/1969 12.78 Flush Top Flush Mount 20.36 7.58 32S/13E-30F02 Highway 1 Middle Paso Robles 3/20/1969 12.08 Flush Top Flush Mount 20.36 8.28 32S/13E-30F02 Highway 1 Middle Paso Robles 2/21/1969 12.62 Flush Top Flush Mount 20.36 7.74 32S/13E-30F02 Highway 1 Middle Paso Robles 1/15/1969 14.92 Flush Top Flush Mount 20.36 5.44 32S/13E-30F02 Highway 1 Middle Paso Robles 11/14/1968 16.19 Flush Top Flush Mount 20.36 4.17 32S/13E-30F02 Highway 1 Middle Paso Robles 10/17/1968 17.30 Flush Top Flush Mount 20.36 3.06 32S/13E-30F02 Highway 1 Middle Paso Robles 9/14/1968 18.18 Flush Top Flush Mount 20.36 2.18 32S/13E-30F02 Highway 1 Middle Paso Robles 8/13/1968 17.40 Flush Top Flush Mount 20.36 2.96 32S/13E-30F02 Highway 1 Middle Paso Robles 7/22/1968 17.37 Flush Top Flush Mount 20.36 2.99 32S/13E-30F02 Highway 1 Middle Paso Robles 6/24/1968 17.17 Flush Top Flush Mount 20.36 3.19 32S/13E-30F02 Highway 1 Middle Paso Robles 5/30/1968 16.94 Flush Top Flush Mount 20.36 3.42 32S/13E-30F02 Highway 1 Middle Paso Robles 4/20/1968 15.24 Flush Top Flush Mount 20.36 5.12 32S/13E-30F02 Highway 1 Middle Paso Robles 3/21/1968 14.70 Flush Top Flush Mount 20.36 5.66 32S/13E-30F02 Highway 1 Middle Paso Robles 2/22/1968 13.85 Flush Top Flush Mount 20.36 6.51 32S/13E-30F02 Highway 1 Middle Paso Robles 1/17/1968 13.32 Flush Top Flush Mount 20.36 7.04 32S/13E-30F02 Highway 1 Middle Paso Robles 12/22/1967 13.99 Flush Top Flush Mount 20.36 6.37 32S/13E-30F02 Highway 1 Middle Paso Robles 11/13/1967 15.77 Flush Top Flush Mount 20.36 4.59 32S/13E-30F02 Highway 1 Middle Paso Robles 10/9/1967 14.98 Flush Top Flush Mount 20.36 5.38 32S/13E-30F02 Highway 1 Middle Paso Robles 9/5/1967 15.32 Flush Top Flush Mount 20.36 5.04 32S/13E-30F02 Highway 1 Middle Paso Robles 8/8/1967 15.65 Flush Top Flush Mount 20.36 4.71 32S/13E-30F02 Highway 1 Middle Paso Robles 7/12/1967 14.94 Flush Top Flush Mount 20.36 5.42 32S/13E-30F02 Highway 1 Middle Paso Robles 6/1/1967 14.50 Flush Top Flush Mount 20.36 5.86 32S/13E-30F02 Highway 1 Middle Paso Robles 5/2/1967 13.40 Flush Top Flush Mount 20.36 6.96 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F03 Highway 1 Deep Careaga 10/5/2021 16.64 Stove Pipe Top of Steel 23.16 6.52 32S/13E-30F03 Highway 1 Deep Careaga 7/13/2021 15.11 Stove Pipe Top of Steel 23.16 8.05 32S/13E-30F03 Highway 1 Deep Careaga 4/6/2021 14.09 Stove Pipe Top of Steel 23.16 9.07 32S/13E-30F03 Highway 1 Deep Careaga 1/6/2021 14.04 Stove Pipe Top of Steel 23.16 9.12 32S/13E-30F03 Highway 1 Deep Careaga 10/7/2020 16.15 Stove Pipe Top of Steel 23.16 7.01 32S/13E-30F03 Highway 1 Deep Careaga 7/6/2020 13.68 Stove Pipe Top of Steel 23.16 9.48 32S/13E-30F03 Highway 1 Deep Careaga 4/7/2020 11.19 Stove Pipe Top of Steel 23.16 11.97 32S/13E-30F03 Highway 1 Deep Careaga 1/7/2020 12.13 Stove Pipe Top of Steel 23.16 11.03 32S/13E-30F03 Highway 1 Deep Careaga 10/9/2019 14.40 Stove Pipe Top of Steel 23.16 8.76 32S/13E-30F03 Highway 1 Deep Careaga 7/9/2019 13.38 Stove Pipe Top of Steel 23.16 9.78 32S/13E-30F03 Highway 1 Deep Careaga 4/9/2019 12.55 Stove Pipe Top of Steel 23.16 10.61 32S/13E-30F03 Highway 1 Deep Careaga 1/8/2019 14.27 Stove Pipe Top of Steel 23.16 8.89 32S/13E-30F03 Highway 1 Deep Careaga 10/9/2018 15.48 Stove Pipe Top of Steel 23.16 7.68 32S/13E-30F03 Highway 1 Deep Careaga 7/10/2018 16.11 Stove Pipe Top of Steel 23.16 7.05 32S/13E-30F03 Highway 1 Deep Careaga 4/10/2018 12.16 Stove Pipe Top of Steel 23.16 11.00 32S/13E-30F03 Highway 1 Deep Careaga 1/10/2018 12.85 Stove Pipe Top of Steel 23.16 10.31 32S/13E-30F03 Highway 1 Deep Careaga 10/10/2017 14.70 Stove Pipe Top of Steel 23.16 8.46 32S/13E-30F03 Highway 1 Deep Careaga 7/11/2017 13.64 Stove Pipe Top of Steel 23.16 9.52 32S/13E-30F03 Highway 1 Deep Careaga 4/11/2017 12.36 Stove Pipe Top of Steel 23.16 10.80 32S/13E-30F03 Highway 1 Deep Careaga 1/10/2017 14.25 Stove Pipe Top of Steel 23.16 8.91 32S/13E-30F03 Highway 1 Deep Careaga 10/12/2016 17.82 Stove Pipe Top of Steel 23.16 5.34 32S/13E-30F03 Highway 1 Deep Careaga 7/19/2016 17.22 Stove Pipe Top of Steel 23.16 5.94 32S/13E-30F03 Highway 1 Deep Careaga 4/12/2016 14.90 Stove Pipe Top of Steel 23.16 8.26 32S/13E-30F03 Highway 1 Deep Careaga 1/12/2016 14.84 Stove Pipe Top of Steel 23.16 8.32 32S/13E-30F03 Highway 1 Deep Careaga 10/13/2015 18.87 Stove Pipe Top of Steel 23.16 4.29 32S/13E-30F03 Highway 1 Deep Careaga 7/14/2015 18.87 Stove Pipe Top of Steel 23.16 4.29 32S/13E-30F03 Highway 1 Deep Careaga 4/14/2015 17.92 Stove Pipe Top of Steel 23.16 5.24 32S/13E-30F03 Highway 1 Deep Careaga 1/13/2015 14.13 Stove Pipe Top of Steel 23.16 9.03 32S/13E-30F03 Highway 1 Deep Careaga 10/14/2014 18.98 Stove Pipe Top of Steel 23.16 4.18 32S/13E-30F03 Highway 1 Deep Careaga 7/29/2014 18.62 Stove Pipe Top of Steel 23.16 4.54 32S/13E-30F03 Highway 1 Deep Careaga 6/4/2014 22.27 Stove Pipe Top of Steel 23.16 0.89 32S/13E-30F03 Highway 1 Deep Careaga 5/5/2014 21.34 Stove Pipe Top of Steel 23.16 1.82 32S/13E-30F03 Highway 1 Deep Careaga 4/15/2014 16.14 Stove Pipe Top of Steel 23.16 7.02 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F03 Highway 1 Deep Careaga 1/14/2014 15.35 Stove Pipe Top of Steel 23.16 7.81 32S/13E-30F03 Highway 1 Deep Careaga 10/14/2013 17.30 Stove Pipe Top of Steel 23.16 5.86 32S/13E-30F03 Highway 1 Deep Careaga 7/9/2013 16.61 Stove Pipe Top of Steel 23.16 6.55 32S/13E-30F03 Highway 1 Deep Careaga 4/10/2013 14.69 Stove Pipe Top of Steel 23.16 8.47 32S/13E-30F03 Highway 1 Deep Careaga 1/14/2013 12.62 Stove Pipe Top of Steel 23.16 10.54 32S/13E-30F03 Highway 1 Deep Careaga 10/30/2012 14.61 Stove Pipe Top of Steel 23.16 8.55 32S/13E-30F03 Highway 1 Deep Careaga 7/24/2012 14.50 Stove Pipe Top of Steel 23.16 8.66 32S/13E-30F03 Highway 1 Deep Careaga 4/18/2012 10.43 Stove Pipe Top of Steel 23.16 12.73 32S/13E-30F03 Highway 1 Deep Careaga 1/12/2012 12.37 Stove Pipe Top of Steel 23.16 10.79 32S/13E-30F03 Highway 1 Deep Careaga 11/21/2011 13.24 Stove Pipe Top of Steel 23.16 9.92 32S/13E-30F03 Highway 1 Deep Careaga 7/26/2011 14.22 Stove Pipe Top of Steel 23.16 8.94 32S/13E-30F03 Highway 1 Deep Careaga 4/20/2011 12.51 Stove Pipe Top of Steel 23.16 10.65 32S/13E-30F03 Highway 1 Deep Careaga 1/24/2011 12.67 Stove Pipe Top of Steel 23.16 10.49 32S/13E-30F03 Highway 1 Deep Careaga 10/21/2010 6.62 Stove Pipe Top of Steel 23.16 16.54 32S/13E-30F03 Highway 1 Deep Careaga 7/26/2010 17.32 Stove Pipe Top of Steel 23.16 5.84 32S/13E-30F03 Highway 1 Deep Careaga 4/27/2010 11.38 Flush Top Flush Mount 20.36 8.98 32S/13E-30F03 Highway 1 Deep Careaga 1/28/2010 10.98 Flush Top Flush Mount 20.36 9.38 32S/13E-30F03 Highway 1 Deep Careaga 10/19/2009 14.18 Flush Top Flush Mount 20.36 6.18 32S/13E-30F03 Highway 1 Deep Careaga 8/19/2009 20.23 Flush Top Flush Mount 20.36 0.13 32S/13E-30F03 Highway 1 Deep Careaga 5/12/2009 17.68 Flush Top Flush Mount 20.36 2.68 32S/13E-30F03 Highway 1 Deep Careaga 10/15/2008 22.52 Flush Top Flush Mount 20.36 -2.16 32S/13E-30F03 Highway 1 Deep Careaga 4/15/2008 17.86 Flush Top Flush Mount 20.36 2.50 32S/13E-30F03 Highway 1 Deep Careaga 10/18/2007 22.35 Flush Top Flush Mount 20.36 -1.99 32S/13E-30F03 Highway 1 Deep Careaga 4/17/2007 21.75 Flush Top Flush Mount 20.36 -1.39 32S/13E-30F03 Highway 1 Deep Careaga 10/19/2006 13.65 Flush Top Flush Mount 20.36 6.71 32S/13E-30F03 Highway 1 Deep Careaga 4/26/2006 10.45 Flush Top Flush Mount 20.36 9.91 32S/13E-30F03 Highway 1 Deep Careaga 10/7/2005 14.65 Flush Top Flush Mount 20.36 5.71 32S/13E-30F03 Highway 1 Deep Careaga 4/28/2005 13.40 Flush Top Flush Mount 20.36 6.96 32S/13E-30F03 Highway 1 Deep Careaga 10/27/2004 20.00 Flush Top Flush Mount 20.36 0.36 32S/13E-30F03 Highway 1 Deep Careaga 4/8/2004 13.90 Flush Top Flush Mount 20.36 6.46 32S/13E-30F03 Highway 1 Deep Careaga 10/14/2002 16.10 Flush Top Flush Mount 20.36 4.26 32S/13E-30F03 Highway 1 Deep Careaga 4/9/2002 13.50 Flush Top Flush Mount 20.36 6.86 32S/13E-30F03 Highway 1 Deep Careaga 10/5/2001 13.40 Flush Top Flush Mount 20.36 6.96 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F03 Highway 1 Deep Careaga 4/23/2001 8.10 Flush Top Flush Mount 20.36 12.26 32S/13E-30F03 Highway 1 Deep Careaga 10/16/2000 12.10 Flush Top Flush Mount 20.36 8.26 32S/13E-30F03 Highway 1 Deep Careaga 4/24/2000 16.20 Flush Top Flush Mount 20.36 4.16 32S/13E-30F03 Highway 1 Deep Careaga 10/29/1999 11.50 Flush Top Flush Mount 20.36 8.86 32S/13E-30F03 Highway 1 Deep Careaga 4/15/1999 7.09 Flush Top Flush Mount 20.36 13.27 32S/13E-30F03 Highway 1 Deep Careaga 10/20/1998 14.70 Flush Top Flush Mount 20.36 5.66 32S/13E-30F03 Highway 1 Deep Careaga 4/22/1998 8.75 Flush Top Flush Mount 20.36 11.61 32S/13E-30F03 Highway 1 Deep Careaga 10/22/1997 17.86 Flush Top Flush Mount 20.36 2.50 32S/13E-30F03 Highway 1 Deep Careaga 4/29/1997 17.86 Flush Top Flush Mount 20.36 2.50 32S/13E-30F03 Highway 1 Deep Careaga 10/23/1996 19.34 Flush Top Flush Mount 20.36 1.02 32S/13E-30F03 Highway 1 Deep Careaga 4/29/1996 16.20 Flush Top Flush Mount 20.36 4.16 32S/13E-30F03 Highway 1 Deep Careaga 10/11/1995 23.00 Flush Top Flush Mount 20.36 -2.64 32S/13E-30F03 Highway 1 Deep Careaga 4/19/1995 11.60 Flush Top Flush Mount 20.36 8.76 32S/13E-30F03 Highway 1 Deep Careaga 11/1/1994 17.60 Flush Top Flush Mount 20.36 2.76 32S/13E-30F03 Highway 1 Deep Careaga 4/11/1994 14.05 Flush Top Flush Mount 20.36 6.31 32S/13E-30F03 Highway 1 Deep Careaga 10/13/1993 17.28 Flush Top Flush Mount 20.36 3.08 32S/13E-30F03 Highway 1 Deep Careaga 4/8/1993 10.25 Flush Top Flush Mount 20.36 10.11 32S/13E-30F03 Highway 1 Deep Careaga 11/4/1992 18.30 Flush Top Flush Mount 20.36 2.06 32S/13E-30F03 Highway 1 Deep Careaga 4/21/1992 15.20 Flush Top Flush Mount 20.36 5.16 32S/13E-30F03 Highway 1 Deep Careaga 10/11/1991 20.02 Flush Top Flush Mount 20.36 0.34 32S/13E-30F03 Highway 1 Deep Careaga 4/19/1991 16.82 Flush Top Flush Mount 20.36 3.54 32S/13E-30F03 Highway 1 Deep Careaga 10/11/1990 18.12 Flush Top Flush Mount 20.36 2.24 32S/13E-30F03 Highway 1 Deep Careaga 4/24/1990 15.03 Flush Top Flush Mount 20.36 5.33 32S/13E-30F03 Highway 1 Deep Careaga 10/4/1989 15.96 Flush Top Flush Mount 20.36 4.40 32S/13E-30F03 Highway 1 Deep Careaga 4/17/1989 16.40 Flush Top Flush Mount 20.36 3.96 32S/13E-30F03 Highway 1 Deep Careaga 10/20/1988 17.03 Flush Top Flush Mount 20.36 3.33 32S/13E-30F03 Highway 1 Deep Careaga 4/29/1988 14.70 Flush Top Flush Mount 20.36 5.66 32S/13E-30F03 Highway 1 Deep Careaga 10/19/1987 18.77 Flush Top Flush Mount 20.36 1.59 32S/13E-30F03 Highway 1 Deep Careaga 4/13/1987 12.89 Flush Top Flush Mount 20.36 7.47 32S/13E-30F03 Highway 1 Deep Careaga 10/31/1986 19.05 Flush Top Flush Mount 20.36 1.31 32S/13E-30F03 Highway 1 Deep Careaga 4/15/1986 15.83 Flush Top Flush Mount 20.36 4.53 32S/13E-30F03 Highway 1 Deep Careaga 10/18/1985 15.23 Flush Top Flush Mount 20.36 5.13 32S/13E-30F03 Highway 1 Deep Careaga 4/22/1985 12.00 Flush Top Flush Mount 20.36 8.36 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F03 Highway 1 Deep Careaga 10/15/1984 16.88 Flush Top Flush Mount 20.36 3.48 32S/13E-30F03 Highway 1 Deep Careaga 10/27/1983 7.48 Flush Top Flush Mount 20.36 12.88 32S/13E-30F03 Highway 1 Deep Careaga 5/6/1982 9.15 Flush Top Flush Mount 20.36 11.21 32S/13E-30F03 Highway 1 Deep Careaga 10/19/1981 11.12 Flush Top Flush Mount 20.36 9.24 32S/13E-30F03 Highway 1 Deep Careaga 4/21/1981 6.83 Flush Top Flush Mount 20.36 13.53 32S/13E-30F03 Highway 1 Deep Careaga 10/10/1980 9.75 Flush Top Flush Mount 20.36 10.61 32S/13E-30F03 Highway 1 Deep Careaga 5/9/1980 7.02 Flush Top Flush Mount 20.36 13.34 32S/13E-30F03 Highway 1 Deep Careaga 11/7/1979 7.88 Flush Top Flush Mount 20.36 12.48 32S/13E-30F03 Highway 1 Deep Careaga 4/17/1979 5.09 Flush Top Flush Mount 20.36 15.27 32S/13E-30F03 Highway 1 Deep Careaga 12/4/1978 6.02 Flush Top Flush Mount 20.36 14.34 32S/13E-30F03 Highway 1 Deep Careaga 4/24/1978 4.70 Flush Top Flush Mount 20.36 15.66 32S/13E-30F03 Highway 1 Deep Careaga 11/7/1977 10.75 Flush Top Flush Mount 20.36 9.61 32S/13E-30F03 Highway 1 Deep Careaga 5/17/1977 8.95 Flush Top Flush Mount 20.36 11.41 32S/13E-30F03 Highway 1 Deep Careaga 6/9/1976 14.24 Flush Top Flush Mount 20.36 6.12 32S/13E-30F03 Highway 1 Deep Careaga 1/14/1976 7.24 Flush Top Flush Mount 20.36 13.12 32S/13E-30F03 Highway 1 Deep Careaga 7/7/1975 8.42 Flush Top Flush Mount 20.36 11.94 32S/13E-30F03 Highway 1 Deep Careaga 4/1/1975 5.58 Flush Top Flush Mount 20.36 14.78 32S/13E-30F03 Highway 1 Deep Careaga 6/7/1974 5.54 Flush Top Flush Mount 20.36 14.82 32S/13E-30F03 Highway 1 Deep Careaga 9/20/1973 7.18 Flush Top Flush Mount 20.36 13.18 32S/13E-30F03 Highway 1 Deep Careaga 6/29/1972 9.62 Flush Top Flush Mount 20.36 10.74 32S/13E-30F03 Highway 1 Deep Careaga 2/23/1972 5.65 Flush Top Flush Mount 20.36 14.71 32S/13E-30F03 Highway 1 Deep Careaga 11/29/1971 6.78 Flush Top Flush Mount 20.36 13.58 32S/13E-30F03 Highway 1 Deep Careaga 8/26/1971 8.20 Flush Top Flush Mount 20.36 12.16 32S/13E-30F03 Highway 1 Deep Careaga 6/2/1971 7.34 Flush Top Flush Mount 20.36 13.02 32S/13E-30F03 Highway 1 Deep Careaga 3/2/1971 5.76 Flush Top Flush Mount 20.36 14.60 32S/13E-30F03 Highway 1 Deep Careaga 12/15/1970 5.79 Flush Top Flush Mount 20.36 14.57 32S/13E-30F03 Highway 1 Deep Careaga 8/4/1970 10.11 Flush Top Flush Mount 20.36 10.25 32S/13E-30F03 Highway 1 Deep Careaga 6/3/1970 9.88 Flush Top Flush Mount 20.36 10.48 32S/13E-30F03 Highway 1 Deep Careaga 3/27/1970 6.83 Flush Top Flush Mount 20.36 13.53 32S/13E-30F03 Highway 1 Deep Careaga 1/29/1970 6.35 Flush Top Flush Mount 20.36 14.01 32S/13E-30F03 Highway 1 Deep Careaga 10/3/1969 9.44 Flush Top Flush Mount 20.36 10.92 32S/13E-30F03 Highway 1 Deep Careaga 7/23/1969 10.05 Flush Top Flush Mount 20.36 10.31 32S/13E-30F03 Highway 1 Deep Careaga 6/24/1969 9.04 Flush Top Flush Mount 20.36 11.32 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30F03 Highway 1 Deep Careaga 5/22/1969 7.91 Flush Top Flush Mount 20.36 12.45 32S/13E-30F03 Highway 1 Deep Careaga 4/18/1969 6.53 Flush Top Flush Mount 20.36 13.83 32S/13E-30F03 Highway 1 Deep Careaga 3/20/1969 6.57 Flush Top Flush Mount 20.36 13.79 32S/13E-30F03 Highway 1 Deep Careaga 2/21/1969 7.18 Flush Top Flush Mount 20.36 13.18 32S/13E-30F03 Highway 1 Deep Careaga 1/15/1969 9.37 Flush Top Flush Mount 20.36 10.99 32S/13E-30F03 Highway 1 Deep Careaga 12/12/1968 10.33 Flush Top Flush Mount 20.36 10.03 32S/13E-30F03 Highway 1 Deep Careaga 11/14/1968 11.75 Flush Top Flush Mount 20.36 8.61 32S/13E-30F03 Highway 1 Deep Careaga 10/17/1968 13.55 Flush Top Flush Mount 20.36 6.81 32S/13E-30F03 Highway 1 Deep Careaga 9/14/1968 14.20 Flush Top Flush Mount 20.36 6.16 32S/13E-30F03 Highway 1 Deep Careaga 8/13/1968 13.65 Flush Top Flush Mount 20.36 6.71 32S/13E-30F03 Highway 1 Deep Careaga 6/24/1968 12.92 Flush Top Flush Mount 20.36 7.44 32S/13E-30F03 Highway 1 Deep Careaga 5/30/1968 11.91 Flush Top Flush Mount 20.36 8.45 32S/13E-30F03 Highway 1 Deep Careaga 4/20/1968 9.35 Flush Top Flush Mount 20.36 11.01 32S/13E-30F03 Highway 1 Deep Careaga 3/21/1968 8.25 Flush Top Flush Mount 20.36 12.11 32S/13E-30F03 Highway 1 Deep Careaga 2/22/1968 7.67 Flush Top Flush Mount 20.36 12.69 32S/13E-30F03 Highway 1 Deep Careaga 1/17/1968 7.61 Flush Top Flush Mount 20.36 12.75 32S/13E-30F03 Highway 1 Deep Careaga 12/8/1967 8.57 Flush Top Flush Mount 20.36 11.79 32S/13E-30F03 Highway 1 Deep Careaga 11/13/1967 9.93 Flush Top Flush Mount 20.36 10.43 32S/13E-30F03 Highway 1 Deep Careaga 10/9/1967 10.12 Flush Top Flush Mount 20.36 10.24 32S/13E-30F03 Highway 1 Deep Careaga 9/5/1967 10.45 Flush Top Flush Mount 20.36 9.91 32S/13E-30F03 Highway 1 Deep Careaga 8/8/1967 10.16 Flush Top Flush Mount 20.36 10.20 32S/13E-30F03 Highway 1 Deep Careaga 7/12/1967 9.40 Flush Top Flush Mount 20.36 10.96 32S/13E-30F03 Highway 1 Deep Careaga 6/1/1967 8.30 Flush Top Flush Mount 20.36 12.06 32S/13E-30F03 Highway 1 Deep Careaga 5/2/1967 7.13 Flush Top Flush Mount 20.36 13.23 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N01 Pier Ave Shallow Alluvium 10/5/2021 9.85 Stove Pipe Top of Steel 16.13 6.285 32S/13E-30N01 Pier Ave Shallow Alluvium 7/13/2021 9.46 Stove Pipe Top of Steel 16.13 6.675 32S/13E-30N01 Pier Ave Shallow Alluvium 4/6/2021 9.25 Stove Pipe Top of Steel 16.13 6.88 32S/13E-30N01 Pier Ave Shallow Alluvium 1/6/2021 8.90 Stove Pipe Top of Steel 16.13 7.23 32S/13E-30N01 Pier Ave Shallow Alluvium 10/7/2020 9.31 Stove Pipe Top of Steel 16.13 6.83 32S/13E-30N01 Pier Ave Shallow Alluvium 7/6/2020 9.17 Stove Pipe Top of Steel 16.13 6.97 32S/13E-30N01 Pier Ave Shallow Alluvium 4/7/2020 8.92 Stove Pipe Top of Steel 16.13 7.22 32S/13E-30N01 Pier Ave Shallow Alluvium 1/7/2020 8.95 Stove Pipe Top of Steel 16.13 7.18 32S/13E-30N01 Pier Ave Shallow Alluvium 10/9/2019 9.63 Stove Pipe Top of Steel 16.13 6.50 32S/13E-30N01 Pier Ave Shallow Alluvium 7/9/2019 9.25 Stove Pipe Top of Steel 16.13 6.88 32S/13E-30N01 Pier Ave Shallow Alluvium 4/9/2019 8.91 Stove Pipe Top of Steel 16.13 7.22 32S/13E-30N01 Pier Ave Shallow Alluvium 1/8/2019 8.60 Stove Pipe Top of Steel 16.13 7.53 32S/13E-30N01 Pier Ave Shallow Alluvium 10/9/2018 9.35 Stove Pipe Top of Steel 16.13 6.78 32S/13E-30N01 Pier Ave Shallow Alluvium 7/10/2018 9.46 Stove Pipe Top of Steel 16.13 6.67 32S/13E-30N01 Pier Ave Shallow Alluvium 4/10/2018 9.04 Stove Pipe Top of Steel 16.13 7.09 32S/13E-30N01 Pier Ave Shallow Alluvium 1/10/2018 8.97 Stove Pipe Top of Steel 16.13 7.16 32S/13E-30N01 Pier Ave Shallow Alluvium 10/10/2017 9.35 Stove Pipe Top of Steel 16.13 6.78 32S/13E-30N01 Pier Ave Shallow Alluvium 7/11/2017 9.00 Stove Pipe Top of Steel 16.13 7.13 32S/13E-30N01 Pier Ave Shallow Alluvium 4/11/2017 8.70 Stove Pipe Top of Steel 16.13 7.43 32S/13E-30N01 Pier Ave Shallow Alluvium 1/10/2017 7.89 Stove Pipe Top of Steel 16.13 8.24 32S/13E-30N01 Pier Ave Shallow Alluvium 10/12/2016 10.21 Stove Pipe Top of Steel 16.13 5.92 32S/13E-30N01 Pier Ave Shallow Alluvium 7/19/2016 9.91 Stove Pipe Top of Steel 16.13 6.22 32S/13E-30N01 Pier Ave Shallow Alluvium 4/12/2016 8.93 Stove Pipe Top of Steel 16.13 7.20 32S/13E-30N01 Pier Ave Shallow Alluvium 1/12/2016 8.73 Stove Pipe Top of Steel 16.13 7.40 32S/13E-30N01 Pier Ave Shallow Alluvium 10/13/2015 10.11 Stove Pipe Top of Steel 16.13 6.02 32S/13E-30N01 Pier Ave Shallow Alluvium 7/14/2015 9.91 Stove Pipe Top of Steel 16.13 6.22 32S/13E-30N01 Pier Ave Shallow Alluvium 4/14/2015 9.51 Stove Pipe Top of Steel 16.13 6.62 32S/13E-30N01 Pier Ave Shallow Alluvium 1/13/2015 9.03 Stove Pipe Top of Steel 16.13 7.10 32S/13E-30N01 Pier Ave Shallow Alluvium 10/14/2014 9.95 Stove Pipe Top of Steel 16.13 6.18 32S/13E-30N01 Pier Ave Shallow Alluvium 7/29/2014 9.88 Stove Pipe Top of Steel 16.13 6.25 32S/13E-30N01 Pier Ave Shallow Alluvium 6/4/2014 9.54 Stove Pipe Top of Steel 16.13 6.59 32S/13E-30N01 Pier Ave Shallow Alluvium 4/15/2014 9.17 Stove Pipe Top of Steel 16.13 6.96 32S/13E-30N01 Pier Ave Shallow Alluvium 1/14/2014 9.61 Stove Pipe Top of Steel 16.13 6.52 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N01 Pier Ave Shallow Alluvium 10/14/2013 9.86 Stove Pipe Top of Steel 16.13 6.27 32S/13E-30N01 Pier Ave Shallow Alluvium 7/9/2013 9.40 Stove Pipe Top of Steel 16.13 6.73 32S/13E-30N01 Pier Ave Shallow Alluvium 4/10/2013 8.98 Stove Pipe Top of Steel 16.13 7.15 32S/13E-30N01 Pier Ave Shallow Alluvium 1/14/2013 8.60 Stove Pipe Top of Steel 16.13 7.53 32S/13E-30N01 Pier Ave Shallow Alluvium 10/29/2012 8.96 Stove Pipe Top of Steel 16.13 7.17 32S/13E-30N01 Pier Ave Shallow Alluvium 7/23/2012 8.54 Stove Pipe Top of Steel 16.13 7.59 32S/13E-30N01 Pier Ave Shallow Alluvium 4/18/2012 8.53 Stove Pipe Top of Steel 16.13 7.60 32S/13E-30N01 Pier Ave Shallow Alluvium 1/9/2012 8.74 Stove Pipe Top of Steel 16.13 7.39 32S/13E-30N01 Pier Ave Shallow Alluvium 11/21/2011 8.78 Stove Pipe Top of Steel 16.13 7.35 32S/13E-30N01 Pier Ave Shallow Alluvium 7/26/2011 9.01 Stove Pipe Top of Steel 16.13 7.12 32S/13E-30N01 Pier Ave Shallow Alluvium 4/20/2011 8.59 Stove Pipe Top of Steel 16.13 7.54 32S/13E-30N01 Pier Ave Shallow Alluvium 1/24/2011 8.18 Stove Pipe Top of Steel 16.13 7.95 32S/13E-30N01 Pier Ave Shallow Alluvium 10/21/2010 9.99 Stove Pipe Top of Steel 16.13 6.14 32S/13E-30N01 Pier Ave Shallow Alluvium 7/27/2010 8.97 Stove Pipe Top of Steel 16.13 7.16 32S/13E-30N01 Pier Ave Shallow Alluvium 4/27/2010 6.14 Flush Top Flush Mount 13.53 7.39 32S/13E-30N01 Pier Ave Shallow Alluvium 1/26/2010 4.90 Flush Top Flush Mount 13.53 8.63 32S/13E-30N01 Pier Ave Shallow Alluvium 10/20/2009 6.53 Flush Top Flush Mount 13.53 7.00 32S/13E-30N01 Pier Ave Shallow Alluvium 8/20/2009 6.71 Flush Top Flush Mount 13.53 6.82 32S/13E-30N01 Pier Ave Shallow Alluvium 5/11/2009 6.03 Flush Top Flush Mount 13.53 7.50 32S/13E-30N01 Pier Ave Shallow Alluvium 4/7/2009 5.83 Flush Top Flush Mount 13.53 7.70 32S/13E-30N01 Pier Ave Shallow Alluvium 10/15/2008 7.19 Flush Top Flush Mount 13.53 6.34 32S/13E-30N01 Pier Ave Shallow Alluvium 4/15/2008 6.20 Flush Top Flush Mount 13.53 7.33 32S/13E-30N01 Pier Ave Shallow Alluvium 10/18/2007 7.20 Flush Top Flush Mount 13.53 6.33 32S/13E-30N01 Pier Ave Shallow Alluvium 4/25/2006 5.55 Flush Top Flush Mount 13.53 7.98 32S/13E-30N01 Pier Ave Shallow Alluvium 10/7/2005 6.85 Flush Top Flush Mount 13.53 6.68 32S/13E-30N01 Pier Ave Shallow Alluvium 4/29/2005 5.35 Flush Top Flush Mount 13.53 8.18 32S/13E-30N01 Pier Ave Shallow Alluvium 10/27/2004 6.50 Flush Top Flush Mount 13.53 7.03 32S/13E-30N01 Pier Ave Shallow Alluvium 4/8/2004 5.80 Flush Top Flush Mount 13.53 7.73 32S/13E-30N01 Pier Ave Shallow Alluvium 10/14/2002 6.60 Flush Top Flush Mount 13.53 6.93 32S/13E-30N01 Pier Ave Shallow Alluvium 4/9/2002 5.70 Flush Top Flush Mount 13.53 7.83 32S/13E-30N01 Pier Ave Shallow Alluvium 10/5/2001 5.80 Flush Top Flush Mount 13.53 7.73 32S/13E-30N01 Pier Ave Shallow Alluvium 4/23/2001 5.00 Flush Top Flush Mount 13.53 8.53 32S/13E-30N01 Pier Ave Shallow Alluvium 10/16/2000 5.90 Flush Top Flush Mount 13.53 7.63 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N01 Pier Ave Shallow Alluvium 4/24/2000 5.20 Flush Top Flush Mount 13.53 8.33 32S/13E-30N01 Pier Ave Shallow Alluvium 10/29/1999 6.10 Flush Top Flush Mount 13.53 7.43 32S/13E-30N01 Pier Ave Shallow Alluvium 4/15/1999 5.50 Flush Top Flush Mount 13.53 8.03 32S/13E-30N01 Pier Ave Shallow Alluvium 10/20/1998 6.20 Flush Top Flush Mount 13.53 7.33 32S/13E-30N01 Pier Ave Shallow Alluvium 4/22/1998 4.90 Flush Top Flush Mount 13.53 8.63 32S/13E-30N01 Pier Ave Shallow Alluvium 10/22/1997 6.02 Flush Top Flush Mount 13.53 7.51 32S/13E-30N01 Pier Ave Shallow Alluvium 4/29/1997 6.10 Flush Top Flush Mount 13.53 7.43 32S/13E-30N01 Pier Ave Shallow Alluvium 10/23/1996 6.15 Flush Top Flush Mount 13.53 7.38 32S/13E-30N01 Pier Ave Shallow Alluvium 4/29/1996 5.80 Flush Top Flush Mount 13.53 7.73 32S/13E-30N01 Pier Ave Shallow Alluvium 10/10/1995 6.20 Flush Top Flush Mount 13.53 7.33 32S/13E-30N01 Pier Ave Shallow Alluvium 4/19/1995 5.20 Flush Top Flush Mount 13.53 8.33 32S/13E-30N01 Pier Ave Shallow Alluvium 11/1/1994 6.60 Flush Top Flush Mount 13.53 6.93 32S/13E-30N01 Pier Ave Shallow Alluvium 4/11/1994 5.80 Flush Top Flush Mount 13.53 7.73 32S/13E-30N01 Pier Ave Shallow Alluvium 10/13/1993 6.33 Flush Top Flush Mount 13.53 7.20 32S/13E-30N01 Pier Ave Shallow Alluvium 4/8/1993 5.40 Flush Top Flush Mount 13.53 8.13 32S/13E-30N01 Pier Ave Shallow Alluvium 11/4/1992 6.10 Flush Top Flush Mount 13.53 7.43 32S/13E-30N01 Pier Ave Shallow Alluvium 4/21/1992 5.17 Flush Top Flush Mount 13.53 8.36 32S/13E-30N01 Pier Ave Shallow Alluvium 4/11/1991 5.16 Flush Top Flush Mount 13.53 8.37 32S/13E-30N01 Pier Ave Shallow Alluvium 10/11/1990 6.93 Flush Top Flush Mount 13.53 6.60 32S/13E-30N01 Pier Ave Shallow Alluvium 4/24/1990 6.10 Flush Top Flush Mount 13.53 7.43 32S/13E-30N01 Pier Ave Shallow Alluvium 10/4/1989 6.65 Flush Top Flush Mount 13.53 6.88 32S/13E-30N01 Pier Ave Shallow Alluvium 4/17/1989 6.23 Flush Top Flush Mount 13.53 7.30 32S/13E-30N01 Pier Ave Shallow Alluvium 10/20/1988 6.77 Flush Top Flush Mount 13.53 6.76 32S/13E-30N01 Pier Ave Shallow Alluvium 4/28/1988 6.13 Flush Top Flush Mount 13.53 7.40 32S/13E-30N01 Pier Ave Shallow Alluvium 4/21/1988 5.77 Flush Top Flush Mount 13.53 7.76 32S/13E-30N01 Pier Ave Shallow Alluvium 10/19/1987 6.61 Flush Top Flush Mount 13.53 6.92 32S/13E-30N01 Pier Ave Shallow Alluvium 4/13/1987 5.99 Flush Top Flush Mount 13.53 7.54 32S/13E-30N01 Pier Ave Shallow Alluvium 11/5/1986 6.26 Flush Top Flush Mount 13.53 7.27 32S/13E-30N01 Pier Ave Shallow Alluvium 4/15/1986 4.89 Flush Top Flush Mount 13.53 8.64 32S/13E-30N01 Pier Ave Shallow Alluvium 4/22/1985 5.40 Flush Top Flush Mount 13.53 8.13 32S/13E-30N01 Pier Ave Shallow Alluvium 10/24/1984 6.00 Flush Top Flush Mount 13.53 7.53 32S/13E-30N01 Pier Ave Shallow Alluvium 10/28/1983 6.00 Flush Top Flush Mount 13.53 7.53 32S/13E-30N01 Pier Ave Shallow Alluvium 5/6/1982 4.03 Flush Top Flush Mount 13.53 9.50 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N01 Pier Ave Shallow Alluvium 10/20/1981 6.18 Flush Top Flush Mount 13.53 7.35 32S/13E-30N01 Pier Ave Shallow Alluvium 4/21/1981 5.35 Flush Top Flush Mount 13.53 8.18 32S/13E-30N01 Pier Ave Shallow Alluvium 10/10/1980 5.95 Flush Top Flush Mount 13.53 7.58 32S/13E-30N01 Pier Ave Shallow Alluvium 5/9/1980 4.97 Flush Top Flush Mount 13.53 8.56 32S/13E-30N01 Pier Ave Shallow Alluvium 11/7/1979 5.89 Flush Top Flush Mount 13.53 7.64 32S/13E-30N01 Pier Ave Shallow Alluvium 4/17/1979 5.63 Flush Top Flush Mount 13.53 7.90 32S/13E-30N01 Pier Ave Shallow Alluvium 12/4/1978 5.64 Flush Top Flush Mount 13.53 7.89 32S/13E-30N01 Pier Ave Shallow Alluvium 4/24/1978 5.25 Flush Top Flush Mount 13.53 8.28 32S/13E-30N01 Pier Ave Shallow Alluvium 11/7/1977 6.16 Flush Top Flush Mount 13.53 7.37 32S/13E-30N01 Pier Ave Shallow Alluvium 5/17/1977 6.41 Flush Top Flush Mount 13.53 7.12 32S/13E-30N01 Pier Ave Shallow Alluvium 6/7/1976 6.52 Flush Top Flush Mount 13.53 7.01 32S/13E-30N01 Pier Ave Shallow Alluvium 5/21/1976 6.50 Flush Top Flush Mount 13.53 7.03 32S/13E-30N01 Pier Ave Shallow Alluvium 1/14/1976 6.15 Flush Top Flush Mount 13.53 7.38 32S/13E-30N01 Pier Ave Shallow Alluvium 7/7/1975 6.33 Flush Top Flush Mount 13.53 7.20 32S/13E-30N01 Pier Ave Shallow Alluvium 4/1/1975 6.18 Flush Top Flush Mount 13.53 7.35 32S/13E-30N01 Pier Ave Shallow Alluvium 6/7/1974 6.12 Flush Top Flush Mount 13.53 7.41 32S/13E-30N01 Pier Ave Shallow Alluvium 9/20/1973 6.75 Flush Top Flush Mount 13.53 6.78 32S/13E-30N01 Pier Ave Shallow Alluvium 6/29/1972 6.48 Flush Top Flush Mount 13.53 7.05 32S/13E-30N01 Pier Ave Shallow Alluvium 2/29/1972 6.80 Flush Top Flush Mount 13.53 6.73 32S/13E-30N01 Pier Ave Shallow Alluvium 11/29/1971 6.31 Flush Top Flush Mount 13.53 7.22 32S/13E-30N01 Pier Ave Shallow Alluvium 8/26/1971 6.23 Flush Top Flush Mount 13.53 7.30 32S/13E-30N01 Pier Ave Shallow Alluvium 6/2/1971 6.12 Flush Top Flush Mount 13.53 7.41 32S/13E-30N01 Pier Ave Shallow Alluvium 3/2/1971 5.49 Flush Top Flush Mount 13.53 8.04 32S/13E-30N01 Pier Ave Shallow Alluvium 12/15/1970 5.73 Flush Top Flush Mount 13.53 7.80 32S/13E-30N01 Pier Ave Shallow Alluvium 5/22/1969 6.28 Flush Top Flush Mount 13.53 7.25 32S/13E-30N01 Pier Ave Shallow Alluvium 4/18/1969 5.94 Flush Top Flush Mount 13.53 7.59 32S/13E-30N01 Pier Ave Shallow Alluvium 3/20/1969 5.42 Flush Top Flush Mount 13.53 8.11 32S/13E-30N01 Pier Ave Shallow Alluvium 2/21/1969 4.96 Flush Top Flush Mount 13.53 8.57 32S/13E-30N01 Pier Ave Shallow Alluvium 1/5/1969 6.66 Flush Top Flush Mount 13.53 6.87 32S/13E-30N01 Pier Ave Shallow Alluvium 12/12/1968 7.24 Flush Top Flush Mount 13.53 6.29 32S/13E-30N01 Pier Ave Shallow Alluvium 11/14/1968 7.46 Flush Top Flush Mount 13.53 6.07 32S/13E-30N01 Pier Ave Shallow Alluvium 10/17/1968 7.81 Flush Top Flush Mount 13.53 5.72 32S/13E-30N01 Pier Ave Shallow Alluvium 9/14/1968 7.88 Flush Top Flush Mount 13.53 5.65 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N01 Pier Ave Shallow Alluvium 8/13/1968 7.50 Flush Top Flush Mount 13.53 6.03 32S/13E-30N01 Pier Ave Shallow Alluvium 3/21/1968 6.15 Flush Top Flush Mount 13.53 7.38 32S/13E-30N01 Pier Ave Shallow Alluvium 2/22/1968 6.23 Flush Top Flush Mount 13.53 7.30 32S/13E-30N01 Pier Ave Shallow Alluvium 1/17/1968 6.68 Flush Top Flush Mount 13.53 6.85 32S/13E-30N01 Pier Ave Shallow Alluvium 12/8/1967 6.45 Flush Top Flush Mount 13.53 7.08 32S/13E-30N01 Pier Ave Shallow Alluvium 11/13/1967 7.02 Flush Top Flush Mount 13.53 6.51 32S/13E-30N01 Pier Ave Shallow Alluvium 10/9/1967 7.30 Flush Top Flush Mount 13.53 6.23 32S/13E-30N01 Pier Ave Shallow Alluvium 9/5/1967 7.18 Flush Top Flush Mount 13.53 6.35 32S/13E-30N01 Pier Ave Shallow Alluvium 8/8/1967 7.04 Flush Top Flush Mount 13.53 6.49 32S/13E-30N01 Pier Ave Shallow Alluvium 7/12/1967 7.02 Flush Top Flush Mount 13.53 6.51 32S/13E-30N01 Pier Ave Shallow Alluvium 6/1/1967 6.75 Flush Top Flush Mount 13.53 6.78 32S/13E-30N01 Pier Ave Shallow Alluvium 5/2/1967 6.40 Flush Top Flush Mount 13.53 7.13 32S/13E-30N01 Pier Ave Shallow Alluvium 12/12/1950 72.44 Flush Top Flush Mount 13.53 -58.91 32S/13E-30N01 Pier Ave Shallow Alluvium 4/14/1950 68.38 Flush Top Flush Mount 13.53 -54.85 32S/13E-30N01 Pier Ave Shallow Alluvium 4/8/1942 43.63 Flush Top Flush Mount 13.53 -30.10 32S/13E-30N01 Pier Ave Shallow Alluvium 4/1/1942 44.00 Flush Top Flush Mount 13.53 -30.47 32S/13E-30N01 Pier Ave Shallow Alluvium 3/2/1937 63.41 Flush Top Flush Mount 13.53 -49.88 32S/13E-30N01 Pier Ave Shallow Alluvium 8/30/1933 59.66 Flush Top Flush Mount 13.53 -46.13 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N03 Pier Ave Middle Paso Robles 10/5/2021 9.35 Stove Pipe Top of Steel 16.13 6.781666667 32S/13E-30N03 Pier Ave Middle Paso Robles 7/13/2021 10.49 Stove Pipe Top of Steel 16.13 5.641666667 32S/13E-30N03 Pier Ave Middle Paso Robles 4/6/2021 7.77 Stove Pipe Top of Steel 16.13 8.36 32S/13E-30N03 Pier Ave Middle Paso Robles 1/6/2021 8.81 Stove Pipe Top of Steel 16.13 7.32 32S/13E-30N03 Pier Ave Middle Paso Robles 10/7/2020 9.00 Stove Pipe Top of Steel 16.13 7.13 32S/13E-30N03 Pier Ave Middle Paso Robles 7/6/2020 8.37 Stove Pipe Top of Steel 16.13 7.76 32S/13E-30N03 Pier Ave Middle Paso Robles 4/7/2020 7.42 Stove Pipe Top of Steel 16.13 8.71 32S/13E-30N03 Pier Ave Middle Paso Robles 1/7/2020 7.89 Stove Pipe Top of Steel 16.13 8.24 32S/13E-30N03 Pier Ave Middle Paso Robles 10/9/2019 8.29 Stove Pipe Top of Steel 16.13 7.84 32S/13E-30N03 Pier Ave Middle Paso Robles 7/9/2019 8.35 Stove Pipe Top of Steel 16.13 7.78 32S/13E-30N03 Pier Ave Middle Paso Robles 4/9/2019 8.25 Stove Pipe Top of Steel 16.13 7.88 32S/13E-30N03 Pier Ave Middle Paso Robles 1/8/2019 7.90 Stove Pipe Top of Steel 16.13 8.23 32S/13E-30N03 Pier Ave Middle Paso Robles 10/9/2018 8.37 Stove Pipe Top of Steel 16.13 7.76 32S/13E-30N03 Pier Ave Middle Paso Robles 7/10/2018 9.12 Stove Pipe Top of Steel 16.13 7.01 32S/13E-30N03 Pier Ave Middle Paso Robles 4/10/2018 7.50 Stove Pipe Top of Steel 16.13 8.63 32S/13E-30N03 Pier Ave Middle Paso Robles 1/10/2018 7.61 Stove Pipe Top of Steel 16.13 8.52 32S/13E-30N03 Pier Ave Middle Paso Robles 10/10/2017 8.61 Stove Pipe Top of Steel 16.13 7.52 32S/13E-30N03 Pier Ave Middle Paso Robles 7/11/2017 8.84 Stove Pipe Top of Steel 16.13 7.29 32S/13E-30N03 Pier Ave Middle Paso Robles 4/11/2017 7.55 Stove Pipe Top of Steel 16.13 8.58 32S/13E-30N03 Pier Ave Middle Paso Robles 1/10/2017 7.11 Stove Pipe Top of Steel 16.13 9.02 32S/13E-30N03 Pier Ave Middle Paso Robles 10/12/2016 10.13 Stove Pipe Top of Steel 16.13 6.00 32S/13E-30N03 Pier Ave Middle Paso Robles 7/19/2016 10.62 Stove Pipe Top of Steel 16.13 5.51 32S/13E-30N03 Pier Ave Middle Paso Robles 4/12/2016 9.21 Stove Pipe Top of Steel 16.13 6.92 32S/13E-30N03 Pier Ave Middle Paso Robles 1/12/2016 7.98 Stove Pipe Top of Steel 16.13 8.15 32S/13E-30N03 Pier Ave Middle Paso Robles 10/13/2015 10.48 Stove Pipe Top of Steel 16.13 5.65 32S/13E-30N03 Pier Ave Middle Paso Robles 7/14/2015 10.88 Stove Pipe Top of Steel 16.13 5.25 32S/13E-30N03 Pier Ave Middle Paso Robles 4/14/2015 11.88 Stove Pipe Top of Steel 16.13 4.25 32S/13E-30N03 Pier Ave Middle Paso Robles 1/13/2015 9.40 Stove Pipe Top of Steel 16.13 6.73 32S/13E-30N03 Pier Ave Middle Paso Robles 10/14/2014 10.52 Stove Pipe Top of Steel 16.13 5.61 32S/13E-30N03 Pier Ave Middle Paso Robles 7/29/2014 10.22 Stove Pipe Top of Steel 16.13 5.91 32S/13E-30N03 Pier Ave Middle Paso Robles 6/4/2014 11.33 Stove Pipe Top of Steel 16.13 4.80 32S/13E-30N03 Pier Ave Middle Paso Robles 4/15/2014 9.31 Stove Pipe Top of Steel 16.13 6.82 32S/13E-30N03 Pier Ave Middle Paso Robles 1/14/2014 10.26 Stove Pipe Top of Steel 16.13 5.87 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N03 Pier Ave Middle Paso Robles 10/14/2013 10.72 Stove Pipe Top of Steel 16.13 5.41 32S/13E-30N03 Pier Ave Middle Paso Robles 7/9/2013 10.36 Stove Pipe Top of Steel 16.13 5.77 32S/13E-30N03 Pier Ave Middle Paso Robles 4/10/2013 8.26 Stove Pipe Top of Steel 16.13 7.87 32S/13E-30N03 Pier Ave Middle Paso Robles 1/14/2013 7.71 Stove Pipe Top of Steel 16.13 8.42 32S/13E-30N03 Pier Ave Middle Paso Robles 10/29/2012 8.01 Stove Pipe Top of Steel 16.13 8.12 32S/13E-30N03 Pier Ave Middle Paso Robles 7/23/2012 9.15 Stove Pipe Top of Steel 16.13 6.98 32S/13E-30N03 Pier Ave Middle Paso Robles 4/18/2012 6.72 Stove Pipe Top of Steel 16.13 9.41 32S/13E-30N03 Pier Ave Middle Paso Robles 1/11/2012 7.17 Stove Pipe Top of Steel 16.13 8.96 32S/13E-30N03 Pier Ave Middle Paso Robles 11/21/2011 6.45 Stove Pipe Top of Steel 16.13 9.68 32S/13E-30N03 Pier Ave Middle Paso Robles 7/26/2011 7.59 Stove Pipe Top of Steel 16.13 8.54 32S/13E-30N03 Pier Ave Middle Paso Robles 4/20/2011 6.65 Stove Pipe Top of Steel 16.13 9.48 32S/13E-30N03 Pier Ave Middle Paso Robles 1/24/2011 6.68 Stove Pipe Top of Steel 16.13 9.45 32S/13E-30N03 Pier Ave Middle Paso Robles 10/21/2010 10.76 Stove Pipe Top of Steel 16.13 5.37 32S/13E-30N03 Pier Ave Middle Paso Robles 7/27/2010 9.53 Stove Pipe Top of Steel 16.13 6.60 32S/13E-30N03 Pier Ave Middle Paso Robles 4/27/2010 5.26 Flush Top Flush Mount 13.53 8.27 32S/13E-30N03 Pier Ave Middle Paso Robles 1/26/2010 5.88 Flush Top Flush Mount 13.53 7.65 32S/13E-30N03 Pier Ave Middle Paso Robles 10/20/2009 6.56 Flush Top Flush Mount 13.53 6.97 32S/13E-30N03 Pier Ave Middle Paso Robles 8/20/2009 7.50 Flush Top Flush Mount 13.53 6.03 32S/13E-30N03 Pier Ave Middle Paso Robles 5/12/2009 6.33 Flush Top Flush Mount 13.53 7.20 32S/13E-30N03 Pier Ave Middle Paso Robles 4/15/2008 5.50 Flush Top Flush Mount 13.53 8.03 32S/13E-30N03 Pier Ave Middle Paso Robles 10/18/2007 8.15 Flush Top Flush Mount 13.53 5.38 32S/13E-30N03 Pier Ave Middle Paso Robles 4/17/2007 5.50 Flush Top Flush Mount 13.53 8.03 32S/13E-30N03 Pier Ave Middle Paso Robles 10/19/2006 5.47 Flush Top Flush Mount 13.53 8.06 32S/13E-30N03 Pier Ave Middle Paso Robles 4/25/2006 3.25 Flush Top Flush Mount 13.53 10.28 32S/13E-30N03 Pier Ave Middle Paso Robles 10/7/2005 6.15 Flush Top Flush Mount 13.53 7.38 32S/13E-30N03 Pier Ave Middle Paso Robles 4/29/2005 5.42 Flush Top Flush Mount 13.53 8.11 32S/13E-30N03 Pier Ave Middle Paso Robles 10/27/2004 6.70 Flush Top Flush Mount 13.53 6.83 32S/13E-30N03 Pier Ave Middle Paso Robles 4/8/2004 4.90 Flush Top Flush Mount 13.53 8.63 32S/13E-30N03 Pier Ave Middle Paso Robles 10/8/2003 3.20 Flush Top Flush Mount 13.53 10.33 32S/13E-30N03 Pier Ave Middle Paso Robles 10/14/2002 7.10 Flush Top Flush Mount 13.53 6.43 32S/13E-30N03 Pier Ave Middle Paso Robles 4/9/2002 4.60 Flush Top Flush Mount 13.53 8.93 32S/13E-30N03 Pier Ave Middle Paso Robles 10/5/2001 5.00 Flush Top Flush Mount 13.53 8.53 32S/13E-30N03 Pier Ave Middle Paso Robles 4/23/2001 3.20 Flush Top Flush Mount 13.53 10.33 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N03 Pier Ave Middle Paso Robles 10/16/2000 4.80 Flush Top Flush Mount 13.53 8.73 32S/13E-30N03 Pier Ave Middle Paso Robles 4/24/2000 4.10 Flush Top Flush Mount 13.53 9.43 32S/13E-30N03 Pier Ave Middle Paso Robles 10/28/1999 5.80 Flush Top Flush Mount 13.53 7.73 32S/13E-30N03 Pier Ave Middle Paso Robles 4/15/1999 3.35 Flush Top Flush Mount 13.53 10.18 32S/13E-30N03 Pier Ave Middle Paso Robles 10/20/1998 3.50 Flush Top Flush Mount 13.53 10.03 32S/13E-30N03 Pier Ave Middle Paso Robles 4/22/1998 1.20 Flush Top Flush Mount 13.53 12.33 32S/13E-30N03 Pier Ave Middle Paso Robles 10/22/1997 4.93 Flush Top Flush Mount 13.53 8.60 32S/13E-30N03 Pier Ave Middle Paso Robles 4/29/1997 4.60 Flush Top Flush Mount 13.53 8.93 32S/13E-30N03 Pier Ave Middle Paso Robles 10/23/1996 5.05 Flush Top Flush Mount 13.53 8.48 32S/13E-30N03 Pier Ave Middle Paso Robles 4/29/1996 3.70 Flush Top Flush Mount 13.53 9.83 32S/13E-30N03 Pier Ave Middle Paso Robles 10/10/1995 4.70 Flush Top Flush Mount 13.53 8.83 32S/13E-30N03 Pier Ave Middle Paso Robles 4/19/1995 3.10 Flush Top Flush Mount 13.53 10.43 32S/13E-30N03 Pier Ave Middle Paso Robles 11/1/1994 7.20 Flush Top Flush Mount 13.53 6.33 32S/13E-30N03 Pier Ave Middle Paso Robles 4/11/1994 4.88 Flush Top Flush Mount 13.53 8.65 32S/13E-30N03 Pier Ave Middle Paso Robles 10/13/1993 5.98 Flush Top Flush Mount 13.53 7.55 32S/13E-30N03 Pier Ave Middle Paso Robles 4/8/1993 3.35 Flush Top Flush Mount 13.53 10.18 32S/13E-30N03 Pier Ave Middle Paso Robles 11/4/1992 6.40 Flush Top Flush Mount 13.53 7.13 32S/13E-30N03 Pier Ave Middle Paso Robles 4/21/1992 4.51 Flush Top Flush Mount 13.53 9.02 32S/13E-30N03 Pier Ave Middle Paso Robles 10/11/1991 6.59 Flush Top Flush Mount 13.53 6.94 32S/13E-30N03 Pier Ave Middle Paso Robles 4/11/1991 7.14 Flush Top Flush Mount 13.53 6.39 32S/13E-30N03 Pier Ave Middle Paso Robles 10/11/1990 7.61 Flush Top Flush Mount 13.53 5.92 32S/13E-30N03 Pier Ave Middle Paso Robles 4/24/1990 5.89 Flush Top Flush Mount 13.53 7.64 32S/13E-30N03 Pier Ave Middle Paso Robles 10/4/1989 6.54 Flush Top Flush Mount 13.53 6.99 32S/13E-30N03 Pier Ave Middle Paso Robles 4/17/1989 6.65 Flush Top Flush Mount 13.53 6.88 32S/13E-30N03 Pier Ave Middle Paso Robles 10/20/1988 7.29 Flush Top Flush Mount 13.53 6.24 32S/13E-30N03 Pier Ave Middle Paso Robles 4/28/1988 6.45 Flush Top Flush Mount 13.53 7.08 32S/13E-30N03 Pier Ave Middle Paso Robles 4/21/1988 6.45 Flush Top Flush Mount 13.53 7.08 32S/13E-30N03 Pier Ave Middle Paso Robles 10/19/1987 7.12 Flush Top Flush Mount 13.53 6.41 32S/13E-30N03 Pier Ave Middle Paso Robles 4/13/1987 5.09 Flush Top Flush Mount 13.53 8.44 32S/13E-30N03 Pier Ave Middle Paso Robles 11/5/1986 5.06 Flush Top Flush Mount 13.53 8.47 32S/13E-30N03 Pier Ave Middle Paso Robles 4/15/1986 5.61 Flush Top Flush Mount 13.53 7.92 32S/13E-30N03 Pier Ave Middle Paso Robles 4/22/1985 4.80 Flush Top Flush Mount 13.53 8.73 32S/13E-30N03 Pier Ave Middle Paso Robles 10/24/1984 5.70 Flush Top Flush Mount 13.53 7.83 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N03 Pier Ave Middle Paso Robles 10/28/1982 3.04 Flush Top Flush Mount 13.53 10.49 32S/13E-30N03 Pier Ave Middle Paso Robles 5/6/1982 5.53 Flush Top Flush Mount 13.53 8.00 32S/13E-30N03 Pier Ave Middle Paso Robles 10/20/1981 5.23 Flush Top Flush Mount 13.53 8.30 32S/13E-30N03 Pier Ave Middle Paso Robles 4/21/1981 3.09 Flush Top Flush Mount 13.53 10.44 32S/13E-30N03 Pier Ave Middle Paso Robles 10/10/1980 4.70 Flush Top Flush Mount 13.53 8.83 32S/13E-30N03 Pier Ave Middle Paso Robles 5/9/1980 5.30 Flush Top Flush Mount 13.53 8.23 32S/13E-30N03 Pier Ave Middle Paso Robles 11/7/1979 3.85 Flush Top Flush Mount 13.53 9.68 32S/13E-30N03 Pier Ave Middle Paso Robles 4/17/1979 4.48 Flush Top Flush Mount 13.53 9.05 32S/13E-30N03 Pier Ave Middle Paso Robles 12/4/1978 3.25 Flush Top Flush Mount 13.53 10.28 32S/13E-30N03 Pier Ave Middle Paso Robles 4/24/1978 3.32 Flush Top Flush Mount 13.53 10.21 32S/13E-30N03 Pier Ave Middle Paso Robles 11/7/1977 6.67 Flush Top Flush Mount 13.53 6.86 32S/13E-30N03 Pier Ave Middle Paso Robles 5/17/1977 6.67 Flush Top Flush Mount 13.53 6.86 32S/13E-30N03 Pier Ave Middle Paso Robles 6/7/1976 6.28 Flush Top Flush Mount 13.53 7.25 32S/13E-30N03 Pier Ave Middle Paso Robles 5/21/1976 6.07 Flush Top Flush Mount 13.53 7.46 32S/13E-30N03 Pier Ave Middle Paso Robles 1/14/1976 5.00 Flush Top Flush Mount 13.53 8.53 32S/13E-30N03 Pier Ave Middle Paso Robles 7/7/1975 5.00 Flush Top Flush Mount 13.53 8.53 32S/13E-30N03 Pier Ave Middle Paso Robles 4/1/1975 4.00 Flush Top Flush Mount 13.53 9.53 32S/13E-30N03 Pier Ave Middle Paso Robles 6/7/1974 4.00 Flush Top Flush Mount 13.53 9.53 32S/13E-30N03 Pier Ave Middle Paso Robles 9/20/1973 5.00 Flush Top Flush Mount 13.53 8.53 32S/13E-30N03 Pier Ave Middle Paso Robles 6/29/1972 11.00 Flush Top Flush Mount 13.53 2.53 32S/13E-30N03 Pier Ave Middle Paso Robles 2/29/1972 3.00 Flush Top Flush Mount 13.53 10.53 32S/13E-30N03 Pier Ave Middle Paso Robles 11/29/1971 5.81 Flush Top Flush Mount 13.53 7.72 32S/13E-30N03 Pier Ave Middle Paso Robles 8/26/1971 6.00 Flush Top Flush Mount 13.53 7.53 32S/13E-30N03 Pier Ave Middle Paso Robles 6/2/1971 6.00 Flush Top Flush Mount 13.53 7.53 32S/13E-30N03 Pier Ave Middle Paso Robles 3/2/1971 4.62 Flush Top Flush Mount 13.53 8.91 32S/13E-30N03 Pier Ave Middle Paso Robles 12/15/1970 6.03 Flush Top Flush Mount 13.53 7.50 32S/13E-30N03 Pier Ave Middle Paso Robles 6/24/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N03 Pier Ave Middle Paso Robles 5/22/1969 7.00 Flush Top Flush Mount 13.53 6.53 32S/13E-30N03 Pier Ave Middle Paso Robles 4/18/1969 6.23 Flush Top Flush Mount 13.53 7.30 32S/13E-30N03 Pier Ave Middle Paso Robles 3/20/1969 5.24 Flush Top Flush Mount 13.53 8.29 32S/13E-30N03 Pier Ave Middle Paso Robles 2/21/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N03 Pier Ave Middle Paso Robles 1/15/1969 8.24 Flush Top Flush Mount 13.53 5.29 32S/13E-30N03 Pier Ave Middle Paso Robles 12/12/1968 7.82 Flush Top Flush Mount 13.53 5.71 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N03 Pier Ave Middle Paso Robles 11/14/1968 9.05 Flush Top Flush Mount 13.53 4.48 32S/13E-30N03 Pier Ave Middle Paso Robles 10/17/1968 10.07 Flush Top Flush Mount 13.53 3.46 32S/13E-30N03 Pier Ave Middle Paso Robles 9/14/1968 10.77 Flush Top Flush Mount 13.53 2.76 32S/13E-30N03 Pier Ave Middle Paso Robles 8/23/1968 11.59 Flush Top Flush Mount 13.53 1.94 32S/13E-30N03 Pier Ave Middle Paso Robles 4/20/1968 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N03 Pier Ave Middle Paso Robles 3/21/1968 8.64 Flush Top Flush Mount 13.53 4.89 32S/13E-30N03 Pier Ave Middle Paso Robles 2/22/1968 7.20 Flush Top Flush Mount 13.53 6.33 32S/13E-30N03 Pier Ave Middle Paso Robles 1/17/1968 7.67 Flush Top Flush Mount 13.53 5.86 32S/13E-30N03 Pier Ave Middle Paso Robles 12/8/1967 6.95 Flush Top Flush Mount 13.53 6.58 32S/13E-30N03 Pier Ave Middle Paso Robles 11/13/1967 9.03 Flush Top Flush Mount 13.53 4.50 32S/13E-30N03 Pier Ave Middle Paso Robles 10/9/1967 8.05 Flush Top Flush Mount 13.53 5.48 32S/13E-30N03 Pier Ave Middle Paso Robles 9/5/1967 8.07 Flush Top Flush Mount 13.53 5.46 32S/13E-30N03 Pier Ave Middle Paso Robles 8/8/1967 9.14 Flush Top Flush Mount 13.53 4.39 32S/13E-30N03 Pier Ave Middle Paso Robles 7/12/1967 8.92 Flush Top Flush Mount 13.53 4.61 32S/13E-30N03 Pier Ave Middle Paso Robles 6/1/1967 6.70 Flush Top Flush Mount 13.53 6.83 32S/13E-30N03 Pier Ave Middle Paso Robles 5/2/1967 6.15 Flush Top Flush Mount 13.53 7.38 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N02 Pier Ave Deep Paso Robles 10/5/2021 12.28 Stove Pipe Top of Steel 16.13 3.851666667 32S/13E-30N02 Pier Ave Deep Paso Robles 7/13/2021 11.67 Stove Pipe Top of Steel 16.13 4.461666667 32S/13E-30N02 Pier Ave Deep Paso Robles 4/6/2021 8.28 Stove Pipe Top of Steel 16.13 7.85 32S/13E-30N02 Pier Ave Deep Paso Robles 1/6/2021 8.54 Stove Pipe Top of Steel 16.13 7.59 32S/13E-30N02 Pier Ave Deep Paso Robles 10/7/2020 11.33 Stove Pipe Top of Steel 16.13 4.80 32S/13E-30N02 Pier Ave Deep Paso Robles 7/6/2020 9.18 Stove Pipe Top of Steel 16.13 6.95 32S/13E-30N02 Pier Ave Deep Paso Robles 4/7/2020 5.01 Stove Pipe Top of Steel 16.13 11.12 32S/13E-30N02 Pier Ave Deep Paso Robles 1/7/2020 5.92 Stove Pipe Top of Steel 16.13 10.21 32S/13E-30N02 Pier Ave Deep Paso Robles 10/9/2019 10.00 Stove Pipe Top of Steel 16.13 6.13 32S/13E-30N02 Pier Ave Deep Paso Robles 7/9/2019 8.05 Stove Pipe Top of Steel 16.13 8.08 32S/13E-30N02 Pier Ave Deep Paso Robles 4/9/2019 5.23 Stove Pipe Top of Steel 16.13 10.90 32S/13E-30N02 Pier Ave Deep Paso Robles 1/8/2019 7.60 Stove Pipe Top of Steel 16.13 8.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/9/2018 10.77 Stove Pipe Top of Steel 16.13 5.36 32S/13E-30N02 Pier Ave Deep Paso Robles 7/10/2018 10.23 Stove Pipe Top of Steel 16.13 5.90 32S/13E-30N02 Pier Ave Deep Paso Robles 4/10/2018 5.96 Stove Pipe Top of Steel 16.13 10.17 32S/13E-30N02 Pier Ave Deep Paso Robles 1/10/2018 7.43 Stove Pipe Top of Steel 16.13 8.70 32S/13E-30N02 Pier Ave Deep Paso Robles 10/10/2017 10.40 Stove Pipe Top of Steel 16.13 5.73 32S/13E-30N02 Pier Ave Deep Paso Robles 7/11/2017 8.38 Stove Pipe Top of Steel 16.13 7.75 32S/13E-30N02 Pier Ave Deep Paso Robles 4/11/2017 5.35 Stove Pipe Top of Steel 16.13 10.78 32S/13E-30N02 Pier Ave Deep Paso Robles 1/10/2017 7.34 Stove Pipe Top of Steel 16.13 8.79 32S/13E-30N02 Pier Ave Deep Paso Robles 10/12/2016 13.44 Stove Pipe Top of Steel 16.13 2.69 32S/13E-30N02 Pier Ave Deep Paso Robles 7/19/2016 12.40 Stove Pipe Top of Steel 16.13 3.73 32S/13E-30N02 Pier Ave Deep Paso Robles 4/12/2016 8.57 Stove Pipe Top of Steel 16.13 7.56 32S/13E-30N02 Pier Ave Deep Paso Robles 1/12/2016 7.48 Stove Pipe Top of Steel 16.13 8.65 32S/13E-30N02 Pier Ave Deep Paso Robles 10/13/2015 14.14 Stove Pipe Top of Steel 16.13 1.99 32S/13E-30N02 Pier Ave Deep Paso Robles 7/14/2015 13.55 Stove Pipe Top of Steel 16.13 2.58 32S/13E-30N02 Pier Ave Deep Paso Robles 4/14/2015 10.02 Stove Pipe Top of Steel 16.13 6.11 32S/13E-30N02 Pier Ave Deep Paso Robles 1/13/2015 7.85 Stove Pipe Top of Steel 16.13 8.28 32S/13E-30N02 Pier Ave Deep Paso Robles 10/14/2014 13.69 Stove Pipe Top of Steel 16.13 2.44 32S/13E-30N02 Pier Ave Deep Paso Robles 7/29/2014 13.27 Stove Pipe Top of Steel 16.13 2.86 32S/13E-30N02 Pier Ave Deep Paso Robles 6/4/2014 15.20 Stove Pipe Top of Steel 16.13 0.93 32S/13E-30N02 Pier Ave Deep Paso Robles 5/5/2014 13.19 Stove Pipe Top of Steel 16.13 2.94 32S/13E-30N02 Pier Ave Deep Paso Robles 4/15/2014 8.57 Stove Pipe Top of Steel 16.13 7.56 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N02 Pier Ave Deep Paso Robles 1/14/2014 9.30 Stove Pipe Top of Steel 16.13 6.83 32S/13E-30N02 Pier Ave Deep Paso Robles 10/14/2013 12.13 Stove Pipe Top of Steel 16.13 4.00 32S/13E-30N02 Pier Ave Deep Paso Robles 7/9/2013 11.05 Stove Pipe Top of Steel 16.13 5.08 32S/13E-30N02 Pier Ave Deep Paso Robles 4/10/2013 7.06 Stove Pipe Top of Steel 16.13 9.07 32S/13E-30N02 Pier Ave Deep Paso Robles 1/14/2013 4.98 Stove Pipe Top of Steel 16.13 11.15 32S/13E-30N02 Pier Ave Deep Paso Robles 10/29/2012 8.52 Stove Pipe Top of Steel 16.13 7.61 32S/13E-30N02 Pier Ave Deep Paso Robles 7/23/2012 8.31 Stove Pipe Top of Steel 16.13 7.82 32S/13E-30N02 Pier Ave Deep Paso Robles 4/18/2012 3.45 Stove Pipe Top of Steel 16.13 12.68 32S/13E-30N02 Pier Ave Deep Paso Robles 1/11/2012 4.88 Stove Pipe Top of Steel 16.13 11.25 32S/13E-30N02 Pier Ave Deep Paso Robles 11/21/2011 5.35 Stove Pipe Top of Steel 16.13 10.78 32S/13E-30N02 Pier Ave Deep Paso Robles 7/26/2011 7.25 Stove Pipe Top of Steel 16.13 8.88 32S/13E-30N02 Pier Ave Deep Paso Robles 4/20/2011 3.53 Flush Top Flush Mount 13.53 10.00 32S/13E-30N02 Pier Ave Deep Paso Robles 1/24/2011 3.67 Flush Top Flush Mount 13.53 9.86 32S/13E-30N02 Pier Ave Deep Paso Robles 10/21/2010 10.42 Flush Top Flush Mount 13.53 3.11 32S/13E-30N02 Pier Ave Deep Paso Robles 7/27/2010 10.02 Flush Top Flush Mount 13.53 3.51 32S/13E-30N02 Pier Ave Deep Paso Robles 4/27/2010 6.14 Flush Top Flush Mount 13.53 7.39 32S/13E-30N02 Pier Ave Deep Paso Robles 2/25/2010 1.72 Flush Top Flush Mount 13.53 11.81 32S/13E-30N02 Pier Ave Deep Paso Robles 2/25/2010 1.72 Flush Top Flush Mount 13.53 11.81 32S/13E-30N02 Pier Ave Deep Paso Robles 1/26/2010 3.72 Flush Top Flush Mount 13.53 9.81 32S/13E-30N02 Pier Ave Deep Paso Robles 10/20/2009 7.38 Flush Top Flush Mount 13.53 6.15 32S/13E-30N02 Pier Ave Deep Paso Robles 8/20/2009 11.94 Flush Top Flush Mount 13.53 1.59 32S/13E-30N02 Pier Ave Deep Paso Robles 5/11/2009 6.98 Flush Top Flush Mount 13.53 6.55 32S/13E-30N02 Pier Ave Deep Paso Robles 10/15/2008 12.23 Flush Top Flush Mount 13.53 1.30 32S/13E-30N02 Pier Ave Deep Paso Robles 4/15/2008 5.60 Flush Top Flush Mount 13.53 7.93 32S/13E-30N02 Pier Ave Deep Paso Robles 10/18/2007 10.35 Flush Top Flush Mount 13.53 3.18 32S/13E-30N02 Pier Ave Deep Paso Robles 4/17/2007 6.80 Flush Top Flush Mount 13.53 6.73 32S/13E-30N02 Pier Ave Deep Paso Robles 10/19/2006 5.07 Flush Top Flush Mount 13.53 8.46 32S/13E-30N02 Pier Ave Deep Paso Robles 4/25/2006 0.35 Flush Top Flush Mount 13.53 13.18 32S/13E-30N02 Pier Ave Deep Paso Robles 10/7/2005 2.50 Flush Top Flush Mount 13.53 11.03 32S/13E-30N02 Pier Ave Deep Paso Robles 4/29/2005 1.80 Flush Top Flush Mount 13.53 11.73 32S/13E-30N02 Pier Ave Deep Paso Robles 10/27/2004 8.40 Flush Top Flush Mount 13.53 5.13 32S/13E-30N02 Pier Ave Deep Paso Robles 4/8/2004 3.90 Flush Top Flush Mount 13.53 9.63 32S/13E-30N02 Pier Ave Deep Paso Robles 10/17/2002 6.20 Flush Top Flush Mount 13.53 7.33 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N02 Pier Ave Deep Paso Robles 4/9/2002 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/5/2001 3.70 Flush Top Flush Mount 13.53 9.83 32S/13E-30N02 Pier Ave Deep Paso Robles 4/23/2001 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/16/2000 2.90 Flush Top Flush Mount 13.53 10.63 32S/13E-30N02 Pier Ave Deep Paso Robles 4/24/2000 1.90 Flush Top Flush Mount 13.53 11.63 32S/13E-30N02 Pier Ave Deep Paso Robles 10/28/1999 2.98 Flush Top Flush Mount 13.53 10.55 32S/13E-30N02 Pier Ave Deep Paso Robles 4/15/1999 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/20/1998 3.30 Flush Top Flush Mount 13.53 10.23 32S/13E-30N02 Pier Ave Deep Paso Robles 4/22/1998 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/22/1997 5.45 Flush Top Flush Mount 13.53 8.08 32S/13E-30N02 Pier Ave Deep Paso Robles 4/29/1997 5.19 Flush Top Flush Mount 13.53 8.34 32S/13E-30N02 Pier Ave Deep Paso Robles 10/23/1996 5.91 Flush Top Flush Mount 13.53 7.62 32S/13E-30N02 Pier Ave Deep Paso Robles 4/29/1996 3.10 Flush Top Flush Mount 13.53 10.43 32S/13E-30N02 Pier Ave Deep Paso Robles 10/10/1995 9.15 Flush Top Flush Mount 13.53 4.38 32S/13E-30N02 Pier Ave Deep Paso Robles 4/19/1995 1.60 Flush Top Flush Mount 13.53 11.93 32S/13E-30N02 Pier Ave Deep Paso Robles 11/1/1994 7.10 Flush Top Flush Mount 13.53 6.43 32S/13E-30N02 Pier Ave Deep Paso Robles 4/11/1994 3.61 Flush Top Flush Mount 13.53 9.92 32S/13E-30N02 Pier Ave Deep Paso Robles 10/13/1993 8.45 Flush Top Flush Mount 13.53 5.08 32S/13E-30N02 Pier Ave Deep Paso Robles 4/8/1993 1.31 Flush Top Flush Mount 13.53 12.22 32S/13E-30N02 Pier Ave Deep Paso Robles 11/4/1992 7.10 Flush Top Flush Mount 13.53 6.43 32S/13E-30N02 Pier Ave Deep Paso Robles 4/21/1992 3.27 Flush Top Flush Mount 13.53 10.26 32S/13E-30N02 Pier Ave Deep Paso Robles 10/11/1991 8.79 Flush Top Flush Mount 13.53 4.74 32S/13E-30N02 Pier Ave Deep Paso Robles 4/11/1991 7.14 Flush Top Flush Mount 13.53 6.39 32S/13E-30N02 Pier Ave Deep Paso Robles 10/11/1990 8.70 Flush Top Flush Mount 13.53 4.83 32S/13E-30N02 Pier Ave Deep Paso Robles 4/24/1990 5.40 Flush Top Flush Mount 13.53 8.13 32S/13E-30N02 Pier Ave Deep Paso Robles 10/4/1989 6.34 Flush Top Flush Mount 13.53 7.19 32S/13E-30N02 Pier Ave Deep Paso Robles 4/17/1989 4.48 Flush Top Flush Mount 13.53 9.05 32S/13E-30N02 Pier Ave Deep Paso Robles 10/20/1988 7.28 Flush Top Flush Mount 13.53 6.25 32S/13E-30N02 Pier Ave Deep Paso Robles 4/29/1988 2.72 Flush Top Flush Mount 13.53 10.81 32S/13E-30N02 Pier Ave Deep Paso Robles 4/21/1988 3.78 Flush Top Flush Mount 13.53 9.75 32S/13E-30N02 Pier Ave Deep Paso Robles 10/19/1987 6.10 Flush Top Flush Mount 13.53 7.43 32S/13E-30N02 Pier Ave Deep Paso Robles 4/13/1987 1.22 Flush Top Flush Mount 13.53 12.31 32S/13E-30N02 Pier Ave Deep Paso Robles 11/5/1986 4.85 Flush Top Flush Mount 13.53 8.68 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N02 Pier Ave Deep Paso Robles 4/15/1986 0.88 Flush Top Flush Mount 13.53 12.65 32S/13E-30N02 Pier Ave Deep Paso Robles 4/22/1985 0.07 Flush Top Flush Mount 13.53 13.46 32S/13E-30N02 Pier Ave Deep Paso Robles 10/24/1984 3.38 Flush Top Flush Mount 13.53 10.15 32S/13E-30N02 Pier Ave Deep Paso Robles 10/28/1983 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 5/6/1982 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/20/1981 3.54 Flush Top Flush Mount 13.53 9.99 32S/13E-30N02 Pier Ave Deep Paso Robles 4/21/1981 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 10/10/1980 2.48 Flush Top Flush Mount 13.53 11.05 32S/13E-30N02 Pier Ave Deep Paso Robles 5/9/1980 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 11/7/1979 1.73 Flush Top Flush Mount 13.53 11.80 32S/13E-30N02 Pier Ave Deep Paso Robles 4/17/1979 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 12/4/1978 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 4/24/1978 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 11/7/1977 4.89 Flush Top Flush Mount 13.53 8.64 32S/13E-30N02 Pier Ave Deep Paso Robles 5/17/1977 2.80 Flush Top Flush Mount 13.53 10.73 32S/13E-30N02 Pier Ave Deep Paso Robles 6/7/1976 4.70 Flush Top Flush Mount 13.53 8.83 32S/13E-30N02 Pier Ave Deep Paso Robles 5/21/1976 3.79 Flush Top Flush Mount 13.53 9.74 32S/13E-30N02 Pier Ave Deep Paso Robles 11/14/1975 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 7/7/1975 2.53 Flush Top Flush Mount 13.53 11.00 32S/13E-30N02 Pier Ave Deep Paso Robles 4/1/1975 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 6/7/1974 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 9/20/1973 1.03 Flush Top Flush Mount 13.53 12.50 32S/13E-30N02 Pier Ave Deep Paso Robles 6/29/1972 4.35 Flush Top Flush Mount 13.53 9.18 32S/13E-30N02 Pier Ave Deep Paso Robles 2/29/1972 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 11/29/1971 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 8/26/1971 3.00 Flush Top Flush Mount 13.53 10.53 32S/13E-30N02 Pier Ave Deep Paso Robles 6/2/1971 0.88 Flush Top Flush Mount 13.53 12.65 32S/13E-30N02 Pier Ave Deep Paso Robles 3/2/1971 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 12/15/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 6/24/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 5/22/1969 1.48 Flush Top Flush Mount 13.53 12.05 32S/13E-30N02 Pier Ave Deep Paso Robles 4/18/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 3/20/1969 0.00 Flush Top Flush Mount 13.53 13.53 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-30N02 Pier Ave Deep Paso Robles 2/21/1969 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 1/15/1969 2.41 Flush Top Flush Mount 13.53 11.12 32S/13E-30N02 Pier Ave Deep Paso Robles 12/12/1968 4.12 Flush Top Flush Mount 13.53 9.41 32S/13E-30N02 Pier Ave Deep Paso Robles 11/14/1968 5.48 Flush Top Flush Mount 13.53 8.05 32S/13E-30N02 Pier Ave Deep Paso Robles 10/17/1968 8.06 Flush Top Flush Mount 13.53 5.47 32S/13E-30N02 Pier Ave Deep Paso Robles 9/14/1968 9.22 Flush Top Flush Mount 13.53 4.31 32S/13E-30N02 Pier Ave Deep Paso Robles 8/13/1968 8.47 Flush Top Flush Mount 13.53 5.06 32S/13E-30N02 Pier Ave Deep Paso Robles 4/20/1968 0.00 Flush Top Flush Mount 13.53 13.53 32S/13E-30N02 Pier Ave Deep Paso Robles 3/21/1968 1.37 Flush Top Flush Mount 13.53 12.16 32S/13E-30N02 Pier Ave Deep Paso Robles 2/22/1968 0.74 Flush Top Flush Mount 13.53 12.79 32S/13E-30N02 Pier Ave Deep Paso Robles 1/17/1968 1.02 Flush Top Flush Mount 13.53 12.51 32S/13E-30N02 Pier Ave Deep Paso Robles 12/8/1967 2.14 Flush Top Flush Mount 13.53 11.39 32S/13E-30N02 Pier Ave Deep Paso Robles 11/13/1967 4.04 Flush Top Flush Mount 13.53 9.49 32S/13E-30N02 Pier Ave Deep Paso Robles 10/9/1967 4.46 Flush Top Flush Mount 13.53 9.07 32S/13E-30N02 Pier Ave Deep Paso Robles 9/5/1967 5.03 Flush Top Flush Mount 13.53 8.50 32S/13E-30N02 Pier Ave Deep Paso Robles 8/8/1967 4.71 Flush Top Flush Mount 13.53 8.82 32S/13E-30N02 Pier Ave Deep Paso Robles 7/12/1967 1.77 Flush Top Flush Mount 13.53 11.76 32S/13E-30N02 Pier Ave Deep Paso Robles 6/1/1967 1.90 Flush Top Flush Mount 13.53 11.63 32S/13E-30N02 Pier Ave Deep Paso Robles 5/2/1967 0.00 Flush Top Flush Mount 13.53 13.53 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H10 Oceano Green Paso Robles 10/5/2021 29.59 Manhole Top Flush Mount 34.63 5.04 32S/13E-31H10 Oceano Green Paso Robles 7/13/2021 29.37 Manhole Top Flush Mount 34.63 5.26 32S/13E-31H10 Oceano Green Paso Robles 4/6/2021 25.86 Manhole Top Flush Mount 34.63 8.77 32S/13E-31H10 Oceano Green Paso Robles 1/6/2021 24.16 Manhole Top Flush Mount 34.63 10.47 32S/13E-31H10 Oceano Green Paso Robles 10/7/2020 28.77 Manhole Top Flush Mount 34.63 5.86 32S/13E-31H10 Oceano Green Paso Robles 7/6/2020 25.99 Manhole Top Flush Mount 34.63 8.64 32S/13E-31H10 Oceano Green Paso Robles 4/7/2020 22.54 Manhole Top Flush Mount 34.63 12.09 32S/13E-31H10 Oceano Green Paso Robles 1/7/2020 24.03 Manhole Top Flush Mount 34.63 10.60 32S/13E-31H10 Oceano Green Paso Robles 10/9/2019 27.50 Manhole Top Flush Mount 34.63 7.13 32S/13E-31H10 Oceano Green Paso Robles 7/9/2019 28.68 Manhole Top Flush Mount 34.63 5.95 32S/13E-31H10 Oceano Green Paso Robles 4/9/2019 22.35 Manhole Top Flush Mount 34.63 12.28 32S/13E-31H10 Oceano Green Paso Robles 1/8/2019 24.48 Manhole Top Flush Mount 34.63 10.15 32S/13E-31H10 Oceano Green Paso Robles 10/9/2018 27.35 Manhole Top Flush Mount 34.63 7.28 32S/13E-31H10 Oceano Green Paso Robles 7/10/2018 27.94 Manhole Top Flush Mount 34.63 6.69 32S/13E-31H10 Oceano Green Paso Robles 4/10/2018 24.15 Manhole Top Flush Mount 34.63 10.48 32S/13E-31H10 Oceano Green Paso Robles 1/10/2018 24.15 Manhole Top Flush Mount 34.63 10.48 32S/13E-31H10 Oceano Green Paso Robles 10/10/2017 26.53 Manhole Top Flush Mount 34.63 8.10 32S/13E-31H10 Oceano Green Paso Robles 7/11/2017 25.11 Manhole Top Flush Mount 34.63 9.52 32S/13E-31H10 Oceano Green Paso Robles 4/11/2017 21.98 Manhole Top Flush Mount 34.63 12.65 32S/13E-31H10 Oceano Green Paso Robles 1/10/2017 24.50 Manhole Top Flush Mount 34.63 10.13 32S/13E-31H10 Oceano Green Paso Robles 10/12/2016 30.74 Manhole Top Flush Mount 34.63 3.89 32S/13E-31H10 Oceano Green Paso Robles 7/19/2016 29.77 Manhole Top Flush Mount 34.63 4.86 32S/13E-31H10 Oceano Green Paso Robles 4/12/2016 25.64 Manhole Top Flush Mount 34.63 8.99 32S/13E-31H10 Oceano Green Paso Robles 1/12/2016 20.83 Manhole Top of Casing 30.49 9.66 32S/13E-31H10 Oceano Green Paso Robles 10/13/2015 31.88 Manhole Top Flush Mount 34.63 2.75 32S/13E-31H10 Oceano Green Paso Robles 7/14/2015 31.61 Manhole Top Flush Mount 34.63 3.02 32S/13E-31H10 Oceano Green Paso Robles 4/14/2015 28.81 Manhole Top Flush Mount 34.63 5.82 32S/13E-31H10 Oceano Green Paso Robles 1/13/2015 26.11 Manhole Top Flush Mount 34.63 8.52 32S/13E-31H10 Oceano Green Paso Robles 10/14/2014 31.64 Manhole Top Flush Mount 34.63 2.99 32S/13E-31H10 Oceano Green Paso Robles 7/29/2014 32.30 Manhole Top Flush Mount 34.63 2.33 32S/13E-31H10 Oceano Green Paso Robles 6/4/2014 32.82 Manhole Top Flush Mount 34.63 1.81 32S/13E-31H10 Oceano Green Paso Robles 4/15/2014 27.98 Manhole Top Flush Mount 34.63 6.65 32S/13E-31H10 Oceano Green Paso Robles 1/14/2014 28.55 Manhole Top Flush Mount 34.63 6.08 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H10 Oceano Green Paso Robles 10/14/2013 30.31 Manhole Top Flush Mount 34.63 4.32 32S/13E-31H10 Oceano Green Paso Robles 7/9/2013 29.98 Manhole Top Flush Mount 34.63 4.65 32S/13E-31H10 Oceano Green Paso Robles 4/10/2013 23.30 Manhole Top Flush Mount 34.63 11.33 32S/13E-31H10 Oceano Green Paso Robles 1/14/2013 23.59 Manhole Top Flush Mount 34.63 11.04 32S/13E-31H10 Oceano Green Paso Robles 10/30/2012 27.31 Manhole Top Flush Mount 34.63 7.32 32S/13E-31H10 Oceano Green Paso Robles 7/25/2012 27.15 Manhole Top Flush Mount 34.63 7.48 32S/13E-31H10 Oceano Green Paso Robles 4/18/2012 21.65 Manhole Top Flush Mount 34.63 12.98 32S/13E-31H10 Oceano Green Paso Robles 1/12/2012 23.29 Manhole Top Flush Mount 34.63 11.34 32S/13E-31H10 Oceano Green Paso Robles 11/21/2011 22.46 Manhole Top Flush Mount 34.63 12.17 32S/13E-31H10 Oceano Green Paso Robles 7/26/2011 25.51 Manhole Top Flush Mount 34.63 9.12 32S/13E-31H10 Oceano Green Paso Robles 4/20/2011 114.79 Manhole Top Flush Mount 34.63 -80.16 32S/13E-31H10 Oceano Green Paso Robles 1/24/2011 106.59 Manhole Top Flush Mount 34.63 -71.96 32S/13E-31H10 Oceano Green Paso Robles 10/21/2010 112.71 Manhole Top of Casing 30.49 -82.22 32S/13E-31H10 Oceano Green Paso Robles 7/26/2010 95.61 Manhole Top of Casing 30.49 -65.12 32S/13E-31H10 Oceano Green Paso Robles 4/26/2010 63.90 Manhole Top of Casing 30.49 -33.41 32S/13E-31H10 Oceano Green Paso Robles 1/27/2010 43.71 Manhole Top of Casing 30.49 -13.22 32S/13E-31H10 Oceano Green Paso Robles 10/20/2009 29.20 Manhole Top of Casing 30.49 1.29 32S/13E-31H10 Oceano Green Paso Robles 8/19/2009 24.55 Manhole Top of Casing 30.49 5.94 32S/13E-31H10 Oceano Green Paso Robles 4/7/2009 28.12 Manhole Top of Casing 30.49 2.37 32S/13E-31H10 Oceano Green Paso Robles 10/15/2008 27.84 Manhole Top of Casing 30.49 2.65 32S/13E-31H10 Oceano Green Paso Robles 4/16/2008 26.82 Manhole Top of Casing 30.49 3.67 32S/13E-31H10 Oceano Green Paso Robles 10/18/2007 27.10 Manhole Top of Casing 30.49 3.39 32S/13E-31H10 Oceano Green Paso Robles 4/18/2007 25.15 Manhole Top of Casing 30.49 5.34 32S/13E-31H10 Oceano Green Paso Robles 10/16/2006 25.40 Manhole Top of Casing 30.49 5.09 32S/13E-31H10 Oceano Green Paso Robles 4/11/2006 25.60 Manhole Top of Casing 30.49 4.89 32S/13E-31H10 Oceano Green Paso Robles 10/31/2005 26.50 Manhole Top of Casing 30.49 3.99 32S/13E-31H10 Oceano Green Paso Robles 10/5/2001 20.10 Manhole Top of Casing 30.49 10.39 32S/13E-31H10 Oceano Green Paso Robles 4/25/2001 20.00 Manhole Top of Casing 30.49 10.49 32S/13E-31H10 Oceano Green Paso Robles 10/4/2000 20.90 Manhole Top of Casing 30.49 9.59 32S/13E-31H10 Oceano Green Paso Robles 4/14/2000 16.10 Manhole Top of Casing 30.49 14.39 32S/13E-31H10 Oceano Green Paso Robles 10/27/1999 21.40 Manhole Top of Casing 30.49 9.09 32S/13E-31H10 Oceano Green Paso Robles 10/23/1998 19.80 Manhole Top of Casing 30.49 10.69 32S/13E-31H10 Oceano Green Paso Robles 10/21/1998 19.50 Manhole Top of Casing 30.49 10.99 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H10 Oceano Green Paso Robles 4/28/1997 20.30 Manhole Top of Casing 30.49 10.19 32S/13E-31H10 Oceano Green Paso Robles 4/16/1996 20.70 Manhole Top of Casing 30.49 9.79 32S/13E-31H10 Oceano Green Paso Robles 10/4/1995 211.90 Manhole Top of Casing 30.49 -181.41 32S/13E-31H10 Oceano Green Paso Robles 4/7/1995 22.50 Manhole Top of Casing 30.49 7.99 32S/13E-31H10 Oceano Green Paso Robles 4/13/1994 20.20 Manhole Top of Casing 30.49 10.29 32S/13E-31H10 Oceano Green Paso Robles 10/5/1993 21.10 Manhole Top of Casing 30.49 9.39 32S/13E-31H10 Oceano Green Paso Robles 4/6/1993 19.73 Manhole Top of Casing 30.49 10.76 32S/13E-31H10 Oceano Green Paso Robles 10/14/1992 23.69 Manhole Top of Casing 30.49 6.8 32S/13E-31H10 Oceano Green Paso Robles 4/15/1992 24.20 Manhole Top of Casing 30.49 6.29 32S/13E-31H10 Oceano Green Paso Robles 10/7/1991 26.10 Manhole Top of Casing 30.49 4.39 32S/13E-31H10 Oceano Green Paso Robles 4/4/1991 25.50 Manhole Top of Casing 30.49 4.99 32S/13E-31H10 Oceano Green Paso Robles 10/4/1990 25.70 Manhole Top of Casing 30.49 4.79 32S/13E-31H10 Oceano Green Paso Robles 4/11/1990 23.00 Manhole Top of Casing 30.49 7.49 32S/13E-31H10 Oceano Green Paso Robles 10/4/1989 24.60 Manhole Top of Casing 30.49 5.89 32S/13E-31H10 Oceano Green Paso Robles 10/3/1984 21.90 Manhole Top of Casing 30.49 8.59 32S/13E-31H10 Oceano Green Paso Robles 10/14/1983 17.55 Manhole Top of Casing 30.49 12.94 32S/13E-31H10 Oceano Green Paso Robles 5/16/1983 15.80 Manhole Top of Casing 30.49 14.69 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H11 Oceano Blue Paso Robles 10/5/2021 30.64 Manhole Top Flush Mount 34.63 3.99 32S/13E-31H11 Oceano Blue Paso Robles 7/13/2021 29.93 Manhole Top Flush Mount 34.63 4.7 32S/13E-31H11 Oceano Blue Paso Robles 4/6/2021 26.22 Manhole Top Flush Mount 34.63 8.41 32S/13E-31H11 Oceano Blue Paso Robles 1/6/2021 26.51 Manhole Top Flush Mount 34.63 8.12 32S/13E-31H11 Oceano Blue Paso Robles 10/7/2020 29.71 Manhole Top Flush Mount 34.63 4.92 32S/13E-31H11 Oceano Blue Paso Robles 7/6/2020 27.07 Manhole Top Flush Mount 34.63 7.56 32S/13E-31H11 Oceano Blue Paso Robles 4/7/2020 22.42 Manhole Top Flush Mount 34.63 12.21 32S/13E-31H11 Oceano Blue Paso Robles 1/7/2020 23.73 Manhole Top Flush Mount 34.63 10.9 32S/13E-31H11 Oceano Blue Paso Robles 10/9/2019 28.31 Manhole Top Flush Mount 34.63 6.32 32S/13E-31H11 Oceano Blue Paso Robles 7/9/2019 26.69 Manhole Top Flush Mount 34.63 7.94 32S/13E-31H11 Oceano Blue Paso Robles 4/9/2019 22.61 Manhole Top Flush Mount 34.63 12.02 32S/13E-31H11 Oceano Blue Paso Robles 1/8/2019 25.18 Manhole Top Flush Mount 34.63 9.45 32S/13E-31H11 Oceano Blue Paso Robles 10/9/2018 28.82 Manhole Top Flush Mount 34.63 5.81 32S/13E-31H11 Oceano Blue Paso Robles 7/10/2018 28.60 Manhole Top Flush Mount 34.63 6.03 32S/13E-31H11 Oceano Blue Paso Robles 4/10/2018 23.98 Manhole Top Flush Mount 34.63 10.65 32S/13E-31H11 Oceano Blue Paso Robles 1/10/2018 25.08 Manhole Top Flush Mount 34.63 9.55 32S/13E-31H11 Oceano Blue Paso Robles 10/10/2017 28.03 Manhole Top Flush Mount 34.63 6.6 32S/13E-31H11 Oceano Blue Paso Robles 7/11/2017 26.18 Manhole Top Flush Mount 34.63 8.45 32S/13E-31H11 Oceano Blue Paso Robles 4/11/2017 21.90 Manhole Top Flush Mount 34.63 12.73 32S/13E-31H11 Oceano Blue Paso Robles 1/10/2017 25.00 Manhole Top Flush Mount 34.63 9.63 32S/13E-31H11 Oceano Blue Paso Robles 10/12/2016 30.74 Manhole Top Flush Mount 34.63 3.89 32S/13E-31H11 Oceano Blue Paso Robles 7/19/2016 29.62 Manhole Top Flush Mount 34.63 5.01 32S/13E-31H11 Oceano Blue Paso Robles 4/12/2016 25.13 Manhole Top Flush Mount 34.63 9.50 32S/13E-31H11 Oceano Blue Paso Robles 1/12/2016 22.00 Manhole Top of Casing 30.54 8.54 32S/13E-31H11 Oceano Blue Paso Robles 10/13/2015 32.70 Manhole Top Flush Mount 34.63 1.93 32S/13E-31H11 Oceano Blue Paso Robles 7/14/2015 32.21 Manhole Top Flush Mount 34.63 2.42 32S/13E-31H11 Oceano Blue Paso Robles 4/14/2015 28.41 Manhole Top Flush Mount 34.63 6.22 32S/13E-31H11 Oceano Blue Paso Robles 1/13/2015 25.98 Manhole Top Flush Mount 34.63 8.65 32S/13E-31H11 Oceano Blue Paso Robles 10/14/2014 32.70 Manhole Top Flush Mount 34.63 1.93 32S/13E-31H11 Oceano Blue Paso Robles 7/29/2014 32.69 Manhole Top Flush Mount 34.63 1.94 32S/13E-31H11 Oceano Blue Paso Robles 6/4/2014 34.02 Manhole Top Flush Mount 34.63 0.61 32S/13E-31H11 Oceano Blue Paso Robles 4/15/2014 27.07 Manhole Top Flush Mount 34.63 7.56 32S/13E-31H11 Oceano Blue Paso Robles 1/14/2014 27.86 Manhole Top Flush Mount 34.63 6.77 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H11 Oceano Blue Paso Robles 10/14/2013 30.98 Manhole Top Flush Mount 34.63 3.65 32S/13E-31H11 Oceano Blue Paso Robles 7/9/2013 29.36 Manhole Top Flush Mount 34.63 5.27 32S/13E-31H11 Oceano Blue Paso Robles 4/10/2013 24.45 Manhole Top Flush Mount 34.63 10.18 32S/13E-31H11 Oceano Blue Paso Robles 1/14/2013 23.14 Manhole Top Flush Mount 34.63 11.49 32S/13E-31H11 Oceano Blue Paso Robles 10/30/2012 27.68 Manhole Top Flush Mount 34.63 6.95 32S/13E-31H11 Oceano Blue Paso Robles 7/25/2012 27.18 Manhole Top Flush Mount 34.63 7.45 32S/13E-31H11 Oceano Blue Paso Robles 4/18/2012 20.10 Manhole Top Flush Mount 34.63 14.53 32S/13E-31H11 Oceano Blue Paso Robles 1/12/2012 22.26 Manhole Top Flush Mount 34.63 12.37 32S/13E-31H11 Oceano Blue Paso Robles 11/21/2011 22.73 Manhole Top Flush Mount 34.63 11.90 32S/13E-31H11 Oceano Blue Paso Robles 7/26/2011 25.29 Manhole Top Flush Mount 34.63 9.34 32S/13E-31H11 Oceano Blue Paso Robles 4/20/2011 22.59 Manhole Top Flush Mount 34.63 12.04 32S/13E-31H11 Oceano Blue Paso Robles 1/24/2011 24.87 Manhole Top Flush Mount 34.63 9.76 32S/13E-31H11 Oceano Blue Paso Robles 10/21/2010 30.11 Manhole Top of Casing 30.54 0.43 32S/13E-31H11 Oceano Blue Paso Robles 7/26/2010 24.74 Manhole Top of Casing 30.54 5.80 32S/13E-31H11 Oceano Blue Paso Robles 4/26/2010 18.52 Manhole Top of Casing 30.54 12.02 32S/13E-31H11 Oceano Blue Paso Robles 1/27/2010 22.06 Manhole Top of Casing 30.54 8.48 32S/13E-31H11 Oceano Blue Paso Robles 10/20/2009 27.50 Manhole Top of Casing 30.54 3.04 32S/13E-31H11 Oceano Blue Paso Robles 8/19/2009 24.65 Manhole Top of Casing 30.54 5.89 32S/13E-31H11 Oceano Blue Paso Robles 4/7/2009 27.65 Manhole Top of Casing 30.54 2.89 32S/13E-31H11 Oceano Blue Paso Robles 10/15/2008 29.29 Manhole Top of Casing 30.54 1.25 32S/13E-31H11 Oceano Blue Paso Robles 4/16/2008 26.98 Manhole Top of Casing 30.54 3.56 32S/13E-31H11 Oceano Blue Paso Robles 10/18/2007 28.20 Manhole Top of Casing 30.54 2.34 32S/13E-31H11 Oceano Blue Paso Robles 4/18/2007 24.75 Manhole Top of Casing 30.54 5.79 32S/13E-31H11 Oceano Blue Paso Robles 10/16/2006 25.60 Manhole Top of Casing 30.54 4.94 32S/13E-31H11 Oceano Blue Paso Robles 4/11/2006 24.10 Manhole Top of Casing 30.54 6.44 32S/13E-31H11 Oceano Blue Paso Robles 10/31/2005 26.35 Manhole Top of Casing 30.54 4.19 32S/13E-31H11 Oceano Blue Paso Robles 10/5/2001 18.20 Manhole Top of Casing 30.54 12.34 32S/13E-31H11 Oceano Blue Paso Robles 4/25/2001 16.80 Manhole Top of Casing 30.54 13.74 32S/13E-31H11 Oceano Blue Paso Robles 10/4/2000 19.10 Manhole Top of Casing 30.54 11.44 32S/13E-31H11 Oceano Blue Paso Robles 4/14/2000 12.40 Manhole Top of Casing 30.54 18.14 32S/13E-31H11 Oceano Blue Paso Robles 10/27/1999 17.10 Manhole Top of Casing 30.54 13.44 32S/13E-31H11 Oceano Blue Paso Robles 10/21/1998 16.20 Manhole Top of Casing 30.54 14.34 32S/13E-31H11 Oceano Blue Paso Robles 4/23/1998 14.70 Manhole Top of Casing 30.54 15.84 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H11 Oceano Blue Paso Robles 10/22/1997 23.20 Manhole Top of Casing 30.54 7.34 32S/13E-31H11 Oceano Blue Paso Robles 4/28/1997 18.00 Manhole Top of Casing 30.54 12.54 32S/13E-31H11 Oceano Blue Paso Robles 4/16/1996 17.90 Manhole Top of Casing 30.54 12.64 32S/13E-31H11 Oceano Blue Paso Robles 10/4/1995 20.00 Manhole Top of Casing 30.54 10.54 32S/13E-31H11 Oceano Blue Paso Robles 4/7/1995 16.60 Manhole Top of Casing 30.54 13.94 32S/13E-31H11 Oceano Blue Paso Robles 4/13/1994 20.90 Manhole Top of Casing 30.54 9.64 32S/13E-31H11 Oceano Blue Paso Robles 10/5/1993 21.80 Manhole Top of Casing 30.54 8.74 32S/13E-31H11 Oceano Blue Paso Robles 4/6/1993 18.92 Manhole Top of Casing 30.54 11.62 32S/13E-31H11 Oceano Blue Paso Robles 10/14/1992 25.46 Manhole Top of Casing 30.54 5.08 32S/13E-31H11 Oceano Blue Paso Robles 4/14/1992 21.90 Manhole Top of Casing 30.54 8.64 32S/13E-31H11 Oceano Blue Paso Robles 10/7/1991 25.30 Manhole Top of Casing 30.54 5.24 32S/13E-31H11 Oceano Blue Paso Robles 4/4/1991 24.10 Manhole Top of Casing 30.54 6.44 32S/13E-31H11 Oceano Blue Paso Robles 10/4/1990 27.00 Manhole Top of Casing 30.54 3.54 32S/13E-31H11 Oceano Blue Paso Robles 4/11/1990 22.50 Manhole Top of Casing 30.54 8.04 32S/13E-31H11 Oceano Blue Paso Robles 10/4/1989 23.70 Manhole Top of Casing 30.54 6.84 32S/13E-31H11 Oceano Blue Paso Robles 10/13/1984 23.30 Manhole Top of Casing 30.54 7.24 32S/13E-31H11 Oceano Blue Paso Robles 10/3/1984 23.30 Manhole Top of Casing 30.54 7.24 32S/13E-31H11 Oceano Blue Paso Robles 10/14/1983 16.18 Manhole Top of Casing 30.54 14.36 32S/13E-31H11 Oceano Blue Paso Robles 5/16/1983 13.30 Manhole Top of Casing 30.54 17.24 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H12 Oceano Silver Careaga 10/5/2021 37.64 Manhole Top Flush Mount 34.63 -3.01 32S/13E-31H12 Oceano Silver Careaga 7/13/2021 34.71 Manhole Top Flush Mount 34.63 -0.08 32S/13E-31H12 Oceano Silver Careaga 4/6/2021 25.26 Manhole Top Flush Mount 34.63 9.37 32S/13E-31H12 Oceano Silver Careaga 1/6/2021 25.17 Manhole Top Flush Mount 34.63 9.46 32S/13E-31H12 Oceano Silver Careaga 10/7/2020 28.34 Manhole Top Flush Mount 34.63 6.29 32S/13E-31H12 Oceano Silver Careaga 7/6/2020 24.92 Manhole Top Flush Mount 34.63 9.71 32S/13E-31H12 Oceano Silver Careaga 4/7/2020 21.35 Manhole Top Flush Mount 34.63 13.28 32S/13E-31H12 Oceano Silver Careaga 1/7/2020 22.71 Manhole Top Flush Mount 34.63 11.92 32S/13E-31H12 Oceano Silver Careaga 10/9/2019 26.50 Manhole Top Flush Mount 34.63 8.13 32S/13E-31H12 Oceano Silver Careaga 7/9/2019 24.59 Manhole Top Flush Mount 34.63 10.04 32S/13E-31H12 Oceano Silver Careaga 4/9/2019 27.90 Manhole Top Flush Mount 34.63 6.73 32S/13E-31H12 Oceano Silver Careaga 1/8/2019 28.15 Manhole Top Flush Mount 34.63 6.48 32S/13E-31H12 Oceano Silver Careaga 10/9/2018 39.15 Manhole Top Flush Mount 34.63 -4.52 32S/13E-31H12 Oceano Silver Careaga 7/10/2018 28.92 Manhole Top Flush Mount 34.63 5.71 32S/13E-31H12 Oceano Silver Careaga 4/10/2018 23.50 Manhole Top Flush Mount 34.63 11.13 32S/13E-31H12 Oceano Silver Careaga 1/10/2018 23.90 Manhole Top Flush Mount 34.63 10.73 32S/13E-31H12 Oceano Silver Careaga 10/10/2017 28.06 Manhole Top Flush Mount 34.63 6.57 32S/13E-31H12 Oceano Silver Careaga 7/11/2017 24.09 Manhole Top Flush Mount 34.63 10.54 32S/13E-31H12 Oceano Silver Careaga 4/11/2017 21.14 Manhole Top Flush Mount 34.63 13.49 32S/13E-31H12 Oceano Silver Careaga 1/10/2017 24.80 Manhole Top Flush Mount 34.63 9.83 32S/13E-31H12 Oceano Silver Careaga 10/12/2016 31.00 Manhole Top Flush Mount 34.63 3.63 32S/13E-31H12 Oceano Silver Careaga 7/19/2016 26.95 Manhole Top of Casing 30.48 3.53 32S/13E-31H12 Oceano Silver Careaga 4/12/2016 25.32 Manhole Top Flush Mount 34.63 9.31 32S/13E-31H12 Oceano Silver Careaga 1/12/2016 21.44 Manhole Top of Casing 30.48 9.04 32S/13E-31H12 Oceano Silver Careaga 10/13/2015 32.30 Manhole Top Flush Mount 34.63 2.33 32S/13E-31H12 Oceano Silver Careaga 7/14/2015 32.58 Manhole Top Flush Mount 34.63 2.05 32S/13E-31H12 Oceano Silver Careaga 4/14/2015 30.38 Manhole Top Flush Mount 34.63 4.25 32S/13E-31H12 Oceano Silver Careaga 1/13/2015 26.19 Manhole Top Flush Mount 34.63 8.44 32S/13E-31H12 Oceano Silver Careaga 10/14/2014 43.01 Manhole Top Flush Mount 34.63 -8.38 32S/13E-31H12 Oceano Silver Careaga 7/29/2014 33.65 Manhole Top Flush Mount 34.63 0.98 32S/13E-31H12 Oceano Silver Careaga 6/4/2014 36.33 Manhole Top Flush Mount 34.63 -1.70 32S/13E-31H12 Oceano Silver Careaga 4/15/2014 42.20 Manhole Top Flush Mount 34.63 -7.57 32S/13E-31H12 Oceano Silver Careaga 1/14/2014 27.78 Manhole Top Flush Mount 34.63 6.85 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H12 Oceano Silver Careaga 10/14/2013 30.92 Manhole Top Flush Mount 34.63 3.71 32S/13E-31H12 Oceano Silver Careaga 7/9/2013 30.91 Manhole Top Flush Mount 34.63 3.72 32S/13E-31H12 Oceano Silver Careaga 4/10/2013 26.08 Manhole Top Flush Mount 34.63 8.55 32S/13E-31H12 Oceano Silver Careaga 1/14/2013 23.12 Manhole Top Flush Mount 34.63 11.51 32S/13E-31H12 Oceano Silver Careaga 10/30/2012 27.14 Manhole Top Flush Mount 34.63 7.49 32S/13E-31H12 Oceano Silver Careaga 7/25/2012 27.68 Manhole Top Flush Mount 34.63 6.95 32S/13E-31H12 Oceano Silver Careaga 4/18/2012 20.13 Manhole Top Flush Mount 34.63 14.5 32S/13E-31H12 Oceano Silver Careaga 1/11/2012 23.00 Manhole Top Flush Mount 34.63 11.63 32S/13E-31H12 Oceano Silver Careaga 11/21/2011 22.85 Manhole Top Flush Mount 34.63 11.78 32S/13E-31H12 Oceano Silver Careaga 7/26/2011 25.23 Manhole Top Flush Mount 34.63 9.4 32S/13E-31H12 Oceano Silver Careaga 4/20/2011 21.27 Manhole Top Flush Mount 34.63 13.36 32S/13E-31H12 Oceano Silver Careaga 1/24/2011 22.02 Manhole Top Flush Mount 34.63 12.61 32S/13E-31H12 Oceano Silver Careaga 10/21/2010 29.11 Manhole Top Flush Mount 34.63 5.52 32S/13E-31H12 Oceano Silver Careaga 7/26/2010 24.24 Manhole Well Casing 30.48 6.24 32S/13E-31H12 Oceano Silver Careaga 4/26/2010 19.04 Manhole Well Casing 30.48 11.44 32S/13E-31H12 Oceano Silver Careaga 1/27/2010 21.05 Manhole Well Casing 30.48 9.43 32S/13E-31H12 Oceano Silver Careaga 10/20/2009 27.52 Manhole Well Casing 30.48 2.96 32S/13E-31H12 Oceano Silver Careaga 8/19/2009 29.34 Manhole Well Casing 30.48 1.14 32S/13E-31H12 Oceano Silver Careaga 4/7/2009 31.32 Manhole Well Casing 30.48 -0.84 32S/13E-31H12 Oceano Silver Careaga 10/15/2008 41.62 Manhole Well Casing 30.48 -11.14 32S/13E-31H12 Oceano Silver Careaga 4/16/2008 29.70 Manhole Well Casing 30.48 0.78 32S/13E-31H12 Oceano Silver Careaga 10/19/2007 33.15 Manhole Well Casing 30.48 -2.67 32S/13E-31H12 Oceano Silver Careaga 4/18/2007 26.30 Manhole Well Casing 30.48 4.18 32S/13E-31H12 Oceano Silver Careaga 10/16/2006 27.30 Manhole Well Casing 30.48 3.18 32S/13E-31H12 Oceano Silver Careaga 4/11/2006 22.70 Manhole Well Casing 30.48 7.78 32S/13E-31H12 Oceano Silver Careaga 10/31/2005 30.10 Manhole Well Casing 30.48 0.38 32S/13E-31H12 Oceano Silver Careaga 10/5/2001 18.10 Manhole Well Casing 30.48 12.38 32S/13E-31H12 Oceano Silver Careaga 4/25/2001 15.90 Manhole Well Casing 30.48 14.58 32S/13E-31H12 Oceano Silver Careaga 10/4/2000 21.60 Manhole Well Casing 30.48 8.88 32S/13E-31H12 Oceano Silver Careaga 4/14/2000 17.00 Manhole Well Casing 30.48 13.48 32S/13E-31H12 Oceano Silver Careaga 10/27/1999 24.10 Manhole Well Casing 30.48 6.38 32S/13E-31H12 Oceano Silver Careaga 10/21/1998 26.60 Manhole Well Casing 30.48 3.88 32S/13E-31H12 Oceano Silver Careaga 4/23/1998 16.80 Manhole Well Casing 30.48 13.68 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H12 Oceano Silver Careaga 10/22/1997 32.20 Manhole Well Casing 30.48 -1.72 32S/13E-31H12 Oceano Silver Careaga 4/28/1997 33.50 Manhole Well Casing 30.48 -3.02 32S/13E-31H12 Oceano Silver Careaga 4/16/1996 29.20 Manhole Well Casing 30.48 1.28 32S/13E-31H12 Oceano Silver Careaga 10/4/1995 34.90 Manhole Well Casing 30.48 -4.42 32S/13E-31H12 Oceano Silver Careaga 4/7/1995 29.50 Manhole Well Casing 30.48 0.98 32S/13E-31H12 Oceano Silver Careaga 4/13/1994 35.30 Manhole Well Casing 30.48 -4.82 32S/13E-31H12 Oceano Silver Careaga 10/5/1993 28.30 Manhole Well Casing 30.48 2.18 32S/13E-31H12 Oceano Silver Careaga 4/6/1993 19.47 Manhole Well Casing 30.48 11.01 32S/13E-31H12 Oceano Silver Careaga 10/14/1992 30.34 Manhole Well Casing 30.48 0.14 32S/13E-31H12 Oceano Silver Careaga 4/14/1992 25.23 Manhole Well Casing 30.48 5.25 32S/13E-31H12 Oceano Silver Careaga 10/7/1991 30.50 Manhole Well Casing 30.48 -0.02 32S/13E-31H12 Oceano Silver Careaga 4/4/1991 23.12 Manhole Well Casing 30.48 7.36 32S/13E-31H12 Oceano Silver Careaga 10/4/1990 29.70 Manhole Well Casing 30.48 0.78 32S/13E-31H12 Oceano Silver Careaga 4/11/1990 44.00 Manhole Well Casing 30.48 -13.52 32S/13E-31H12 Oceano Silver Careaga 10/4/1989 25.80 Manhole Well Casing 30.48 4.68 32S/13E-31H12 Oceano Silver Careaga 10/3/1984 26.80 Manhole Well Casing 30.48 3.68 32S/13E-31H12 Oceano Silver Careaga 5/16/1983 13.50 Manhole Well Casing 30.48 16.98 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H13 Oceano Yellow Careaga 10/5/2021 37.03 Manhole Top Flush Mount 34.63 -2.4 32S/13E-31H13 Oceano Yellow Careaga 7/13/2021 33.74 Manhole Top Flush Mount 34.63 0.89 32S/13E-31H13 Oceano Yellow Careaga 4/6/2021 25.09 Manhole Top Flush Mount 34.63 9.54 32S/13E-31H13 Oceano Yellow Careaga 1/6/2021 25.03 Manhole Top Flush Mount 34.63 9.6 32S/13E-31H13 Oceano Yellow Careaga 10/7/2020 28.13 Manhole Top Flush Mount 34.63 6.5 32S/13E-31H13 Oceano Yellow Careaga 7/6/2020 24.64 Manhole Top Flush Mount 34.63 9.99 32S/13E-31H13 Oceano Yellow Careaga 4/7/2020 21.03 Manhole Top Flush Mount 34.63 13.6 32S/13E-31H13 Oceano Yellow Careaga 1/7/2020 22.63 Manhole Top Flush Mount 34.63 12 32S/13E-31H13 Oceano Yellow Careaga 10/9/2019 26.35 Manhole Top Flush Mount 34.63 8.28 32S/13E-31H13 Oceano Yellow Careaga 7/9/2019 24.47 Manhole Top Flush Mount 34.63 10.16 32S/13E-31H13 Oceano Yellow Careaga 4/9/2019 28.05 Manhole Top Flush Mount 34.63 6.58 32S/13E-31H13 Oceano Yellow Careaga 1/8/2019 28.35 Manhole Top Flush Mount 34.63 6.28 32S/13E-31H13 Oceano Yellow Careaga 10/9/2018 37.38 Manhole Top Flush Mount 34.63 -2.75 32S/13E-31H13 Oceano Yellow Careaga 7/10/2018 28.90 Manhole Top Flush Mount 34.63 5.73 32S/13E-31H13 Oceano Yellow Careaga 4/10/2018 23.55 Manhole Top Flush Mount 34.63 11.08 32S/13E-31H13 Oceano Yellow Careaga 1/10/2018 23.85 Manhole Top Flush Mount 34.63 10.78 32S/13E-31H13 Oceano Yellow Careaga 10/10/2017 27.96 Manhole Top Flush Mount 34.63 6.67 32S/13E-31H13 Oceano Yellow Careaga 7/11/2017 23.68 Manhole Top Flush Mount 34.63 10.95 32S/13E-31H13 Oceano Yellow Careaga 4/11/2017 21.18 Manhole Top Flush Mount 34.63 13.45 32S/13E-31H13 Oceano Yellow Careaga 1/10/2017 24.79 Manhole Top Flush Mount 34.63 9.84 32S/13E-31H13 Oceano Yellow Careaga 10/12/2016 30.91 Manhole Top Flush Mount 34.63 3.72 32S/13E-31H13 Oceano Yellow Careaga 7/19/2016 29.58 Manhole Top Flush Mount 34.63 5.05 32S/13E-31H13 Oceano Yellow Careaga 4/12/2016 25.25 Manhole Top Flush Mount 34.63 9.38 32S/13E-31H13 Oceano Yellow Careaga 1/12/2016 21.66 Manhole Top of Casing 30.52 8.86 32S/13E-31H13 Oceano Yellow Careaga 10/13/2015 32.28 Manhole Top Flush Mount 34.63 2.35 32S/13E-31H13 Oceano Yellow Careaga 7/14/2015 32.60 Manhole Top Flush Mount 34.63 2.03 32S/13E-31H13 Oceano Yellow Careaga 4/14/2015 30.42 Manhole Top Flush Mount 34.63 4.21 32S/13E-31H13 Oceano Yellow Careaga 1/13/2015 26.32 Manhole Top Flush Mount 34.63 8.31 32S/13E-31H13 Oceano Yellow Careaga 10/14/2014 41.12 Manhole Top Flush Mount 34.63 -6.49 32S/13E-31H13 Oceano Yellow Careaga 7/29/2014 33.72 Manhole Top Flush Mount 34.63 0.91 32S/13E-31H13 Oceano Yellow Careaga 6/4/2014 36.55 Manhole Top Flush Mount 34.63 -1.92 32S/13E-31H13 Oceano Yellow Careaga 4/15/2014 39.06 Manhole Top Flush Mount 34.63 -4.43 32S/13E-31H13 Oceano Yellow Careaga 1/14/2014 27.80 Manhole Top Flush Mount 34.63 6.83 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H13 Oceano Yellow Careaga 10/14/2013 30.83 Manhole Top Flush Mount 34.63 3.80 32S/13E-31H13 Oceano Yellow Careaga 7/9/2013 30.41 Manhole Top Flush Mount 34.63 4.22 32S/13E-31H13 Oceano Yellow Careaga 4/10/2013 26.09 Manhole Top Flush Mount 34.63 8.54 32S/13E-31H13 Oceano Yellow Careaga 1/14/2013 23.25 Manhole Top Flush Mount 34.63 11.38 32S/13E-31H13 Oceano Yellow Careaga 10/30/2012 27.23 Manhole Top Flush Mount 34.63 7.40 32S/13E-31H13 Oceano Yellow Careaga 7/25/2012 27.69 Manhole Top Flush Mount 34.63 6.94 32S/13E-31H13 Oceano Yellow Careaga 4/18/2012 20.05 Manhole Top Flush Mount 34.63 14.58 32S/13E-31H13 Oceano Yellow Careaga 1/12/2012 23.08 Manhole Top Flush Mount 34.63 11.55 32S/13E-31H13 Oceano Yellow Careaga 11/21/2011 22.98 Manhole Top Flush Mount 34.63 11.65 32S/13E-31H13 Oceano Yellow Careaga 7/26/2011 26.73 Manhole Top Flush Mount 34.63 7.90 32S/13E-31H13 Oceano Yellow Careaga 4/20/2011 21.30 Manhole Top Flush Mount 34.63 13.33 32S/13E-31H13 Oceano Yellow Careaga 1/24/2011 22.01 Manhole Top Flush Mount 34.63 12.62 32S/13E-31H13 Oceano Yellow Careaga 10/21/2010 28.22 Manhole Well Casing 30.52 2.30 32S/13E-31H13 Oceano Yellow Careaga 7/26/2010 25.50 Manhole Well Casing 30.52 5.02 32S/13E-31H13 Oceano Yellow Careaga 4/26/2010 19.17 Manhole Well Casing 30.52 11.35 32S/13E-31H13 Oceano Yellow Careaga 1/27/2010 20.58 Manhole Well Casing 30.52 9.94 32S/13E-31H13 Oceano Yellow Careaga 10/20/2009 25.80 Manhole Well Casing 30.52 4.72 32S/13E-31H13 Oceano Yellow Careaga 8/19/2009 31.04 Manhole Well Casing 30.52 -0.52 32S/13E-31H13 Oceano Yellow Careaga 4/7/2009 34.78 Manhole Well Casing 30.52 -4.26 32S/13E-31H13 Oceano Yellow Careaga 10/15/2008 37.72 Manhole Well Casing 30.52 -7.20 32S/13E-31H13 Oceano Yellow Careaga 4/16/2008 29.80 Manhole Well Casing 30.52 0.72 32S/13E-31H13 Oceano Yellow Careaga 10/19/2007 33.95 Manhole Well Casing 30.52 -3.43 32S/13E-31H13 Oceano Yellow Careaga 4/18/2007 27.50 Manhole Well Casing 30.52 3.02 32S/13E-31H13 Oceano Yellow Careaga 10/16/2006 27.50 Manhole Well Casing 30.52 3.02 32S/13E-31H13 Oceano Yellow Careaga 4/11/2006 26.85 Manhole Well Casing 30.52 3.67 32S/13E-31H13 Oceano Yellow Careaga 10/31/2005 28.05 Manhole Well Casing 30.52 2.47 32S/13E-31H13 Oceano Yellow Careaga 10/5/2001 22.80 Manhole Well Casing 30.52 7.72 32S/13E-31H13 Oceano Yellow Careaga 4/25/2001 22.60 Manhole Well Casing 30.52 7.92 32S/13E-31H13 Oceano Yellow Careaga 10/4/2000 26.50 Manhole Well Casing 30.52 4.02 32S/13E-31H13 Oceano Yellow Careaga 10/27/1999 34.80 Manhole Well Casing 30.52 -4.28 32S/13E-31H13 Oceano Yellow Careaga 10/21/1998 24.80 Manhole Well Casing 30.52 5.72 32S/13E-31H13 Oceano Yellow Careaga 4/23/1998 21.60 Manhole Well Casing 30.52 8.92 32S/13E-31H13 Oceano Yellow Careaga 10/22/1997 30.20 Manhole Well Casing 30.52 0.32 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 32S/13E-31H13 Oceano Yellow Careaga 4/28/1997 25.60 Manhole Well Casing 30.52 4.92 32S/13E-31H13 Oceano Yellow Careaga 4/16/1996 23.80 Manhole Well Casing 30.52 6.72 32S/13E-31H13 Oceano Yellow Careaga 10/4/1995 25.90 Manhole Well Casing 30.52 4.62 32S/13E-31H13 Oceano Yellow Careaga 4/7/1995 22.40 Manhole Well Casing 30.52 8.12 32S/13E-31H13 Oceano Yellow Careaga 4/13/1994 26.50 Manhole Well Casing 30.52 4.02 32S/13E-31H13 Oceano Yellow Careaga 10/5/1993 31.10 Manhole Well Casing 30.52 -0.58 32S/13E-31H13 Oceano Yellow Careaga 4/6/1993 26.90 Manhole Well Casing 30.52 3.62 32S/13E-31H13 Oceano Yellow Careaga 10/14/1992 34.05 Manhole Well Casing 30.52 -3.53 32S/13E-31H13 Oceano Yellow Careaga 4/14/1992 24.90 Manhole Well Casing 30.52 5.62 32S/13E-31H13 Oceano Yellow Careaga 10/7/1991 31.20 Manhole Well Casing 30.52 -0.68 32S/13E-31H13 Oceano Yellow Careaga 4/4/1991 24.60 Manhole Well Casing 30.52 5.92 32S/13E-31H13 Oceano Yellow Careaga 10/4/1990 34.20 Manhole Well Casing 30.52 -3.68 32S/13E-31H13 Oceano Yellow Careaga 4/11/1990 26.10 Manhole Well Casing 30.52 4.42 32S/13E-31H13 Oceano Yellow Careaga 10/4/1989 30.40 Manhole Well Casing 30.52 0.12 32S/13E-31H13 Oceano Yellow Careaga 10/3/1984 26.60 Manhole Well Casing 30.52 3.92 32S/13E-31H13 Oceano Yellow Careaga 5/16/1983 14.30 Manhole Well Casing 30.52 16.22 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/5/2021 21.28 Stove Pipe Top of Steel 26.77 5.488333333 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/13/2021 22.07 Stove Pipe Top of Steel 26.77 4.698333333 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/6/2021 19.74 Stove Pipe Top of Steel 26.77 7.03 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/6/2021 20.04 Stove Pipe Top of Steel 26.77 6.73 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/7/2020 21.30 Stove Pipe Top of Steel 26.77 5.47 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/7/2020 18.35 Stove Pipe Top of Steel 26.77 8.42 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/7/2020 19.02 Stove Pipe Top of Steel 26.77 7.75 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/9/2019 20.85 Stove Pipe Top of Steel 26.77 5.92 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/9/2019 20.39 Stove Pipe Top of Steel 26.77 6.38 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/9/2019 19.93 Stove Pipe Top of Steel 26.77 6.84 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/8/2019 19.00 Stove Pipe Top of Steel 26.77 7.77 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/9/2018 20.80 Stove Pipe Top of Steel 26.77 5.97 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/10/2018 20.74 Stove Pipe Top of Steel 26.77 6.03 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/10/2018 19.11 Stove Pipe Top of Steel 26.77 7.66 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/10/2018 19.32 Stove Pipe Top of Steel 26.77 7.45 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/10/2017 21.23 Stove Pipe Top of Steel 26.77 5.54 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/11/2017 21.59 Stove Pipe Top of Steel 26.77 5.18 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/11/2017 19.38 Stove Pipe Top of Steel 26.77 7.39 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/10/2017 19.70 Stove Pipe Top of Steel 26.77 7.07 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/12/2016 21.86 Stove Pipe Top of Steel 26.77 4.91 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/19/2016 22.21 Stove Pipe Top of Steel 26.77 4.56 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/12/2016 20.56 Stove Pipe Top of Steel 26.77 6.21 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/12/2016 18.76 Stove Pipe Top of Steel 26.77 8.01 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/13/2015 22.14 Stove Pipe Top of Steel 26.77 4.63 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/14/2015 21.84 Stove Pipe Top of Steel 26.77 4.93 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/14/2015 21.18 Stove Pipe Top of Steel 26.77 5.59 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/13/2015 19.89 Stove Pipe Top of Steel 26.77 6.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/14/2014 21.75 Stove Pipe Top of Steel 26.77 5.02 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/29/2014 21.57 Stove Pipe Top of Steel 26.77 5.20 12N/36W-36L01 Oceano Dunes Middle Paso Robles 6/4/2014 22.36 Stove Pipe Top of Steel 26.77 4.41 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/15/2014 19.89 Stove Pipe Top of Steel 26.77 6.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/14/2014 20.38 Stove Pipe Top of Steel 26.77 6.39 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/14/2013 21.71 Stove Pipe Top of Steel 26.77 5.06 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/9/2013 21.37 Stove Pipe Top of Steel 26.77 5.4 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/10/2013 20.10 Stove Pipe Top of Steel 26.77 6.67 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/14/2013 18.62 Stove Pipe Top of Steel 26.77 8.15 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/31/2012 20.11 Stove Pipe Top of Steel 26.77 6.66 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/24/2012 19.42 Stove Pipe Top of Steel 26.77 7.35 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/20/2012 18.26 Stove Pipe Top of Steel 26.77 8.51 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/18/2012 23.83 Stove Pipe Top of Steel 26.77 2.94 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/11/2012 17.68 Stove Pipe Top of Steel 26.77 9.09 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/21/2011 18.08 Stove Pipe Top of Steel 26.77 8.69 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/26/2011 19.63 Stove Pipe Top of Steel 26.77 7.14 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/20/2011 18.26 Stove Pipe Top of Steel 26.77 8.51 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/24/2011 17.61 Stove Pipe Top of Steel 26.77 9.16 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/21/2010 20.75 Stove Pipe Top of Steel 26.77 6.02 12N/36W-36L01 Oceano Dunes Middle Paso Robles 7/27/2010 21.18 Stove Pipe Top of Steel 26.77 5.59 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/26/2010 15.94 Flush Top Flush Mount 23.98 8.04 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/21/2009 17.72 Flush Top Flush Mount 23.98 6.26 12N/36W-36L01 Oceano Dunes Middle Paso Robles 8/20/2009 19.16 Flush Top Flush Mount 23.98 4.82 12N/36W-36L01 Oceano Dunes Middle Paso Robles 5/11/2009 17.68 Flush Top Flush Mount 23.98 6.30 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/18/2009 15.95 Flush Top Flush Mount 23.98 8.03 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/23/2008 18.75 Flush Top Flush Mount 23.98 5.23 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/23/2008 16.87 Flush Top Flush Mount 23.98 7.11 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/18/2007 17.80 Flush Top Flush Mount 23.98 6.18 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/18/2007 16.45 Flush Top Flush Mount 23.98 7.53 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/12/2006 16.44 Flush Top Flush Mount 23.98 7.54 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/20/2006 15.40 Flush Top Flush Mount 23.98 8.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/28/2005 16.56 Flush Top Flush Mount 23.98 7.42 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/29/2005 16.60 Flush Top Flush Mount 23.98 7.38 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/15/2004 17.00 Flush Top Flush Mount 23.98 6.98 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/29/2004 15.00 Flush Top Flush Mount 23.98 8.98 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/28/2003 15.43 Flush Top Flush Mount 23.98 8.55 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/17/2002 17.20 Flush Top Flush Mount 23.98 6.78 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/18/2002 17.10 Flush Top Flush Mount 23.98 6.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/5/2001 15.70 Flush Top Flush Mount 23.98 8.28 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/24/2001 14.60 Flush Top Flush Mount 23.98 9.38 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/13/2000 15.50 Flush Top Flush Mount 23.98 8.48 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/28/2000 15.40 Flush Top Flush Mount 23.98 8.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/29/1998 16.32 Flush Top Flush Mount 23.98 7.66 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/26/1996 18.10 Flush Top Flush Mount 23.98 5.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/24/1996 17.40 Flush Top Flush Mount 23.98 6.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/19/1995 15.45 Flush Top Flush Mount 23.98 8.53 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/1/1994 18.40 Flush Top Flush Mount 23.98 5.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/11/1994 16.60 Flush Top Flush Mount 23.98 7.38 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/20/1993 17.55 Flush Top Flush Mount 23.98 6.43 12N/36W-36L01 Oceano Dunes Middle Paso Robles 5/3/1993 17.00 Flush Top Flush Mount 23.98 6.98 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/20/1993 16.30 Flush Top Flush Mount 23.98 7.68 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/4/1992 17.95 Flush Top Flush Mount 23.98 6.03 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/30/1992 16.80 Flush Top Flush Mount 23.98 7.18 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/11/1991 17.54 Flush Top Flush Mount 23.98 6.44 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/19/1991 17.78 Flush Top Flush Mount 23.98 6.20 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/11/1990 18.91 Flush Top Flush Mount 23.98 5.07 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/24/1990 17.38 Flush Top Flush Mount 23.98 6.60 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/12/1989 17.69 Flush Top Flush Mount 23.98 6.29 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/20/1989 17.02 Flush Top Flush Mount 23.98 6.96 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/25/1988 17.24 Flush Top Flush Mount 23.98 6.74 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/21/1988 17.42 Flush Top Flush Mount 23.98 6.56 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/19/1987 16.81 Flush Top Flush Mount 23.98 7.17 12N/36W-36L01 Oceano Dunes Middle Paso Robles 8/5/1987 18.00 Flush Top Flush Mount 23.98 5.98 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/13/1987 15.39 Flush Top Flush Mount 23.98 8.59 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/31/1986 16.10 Flush Top Flush Mount 23.98 7.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/27/1986 16.61 Flush Top Flush Mount 23.98 7.37 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/4/1985 15.90 Flush Top Flush Mount 23.98 8.08 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/24/1984 16.82 Flush Top Flush Mount 23.98 7.16 12N/36W-36L01 Oceano Dunes Middle Paso Robles 5/4/1982 14.80 Flush Top Flush Mount 23.98 9.18 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/19/1981 16.78 Flush Top Flush Mount 23.98 7.20 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/21/1981 15.00 Flush Top Flush Mount 23.98 8.98 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/20/1980 17.10 Flush Top Flush Mount 23.98 6.88 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L01 Oceano Dunes Middle Paso Robles 10/10/1980 17.10 Flush Top Flush Mount 23.98 6.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 12/11/1979 16.50 Flush Top Flush Mount 23.98 7.48 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/13/1979 16.40 Flush Top Flush Mount 23.98 7.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 4/16/1979 15.25 Flush Top Flush Mount 23.98 8.73 12N/36W-36L01 Oceano Dunes Middle Paso Robles 12/4/1978 14.84 Flush Top Flush Mount 23.98 9.14 12N/36W-36L01 Oceano Dunes Middle Paso Robles 5/4/1978 15.10 Flush Top Flush Mount 23.98 8.88 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/7/1977 18.05 Flush Top Flush Mount 23.98 5.93 12N/36W-36L01 Oceano Dunes Middle Paso Robles 5/17/1977 17.23 Flush Top Flush Mount 23.98 6.75 12N/36W-36L01 Oceano Dunes Middle Paso Robles 6/8/1976 19.15 Flush Top Flush Mount 23.98 4.83 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/14/1976 16.83 Flush Top Flush Mount 23.98 7.15 12N/36W-36L01 Oceano Dunes Middle Paso Robles 1/8/1976 13.70 Flush Top Flush Mount 23.98 10.28 12N/36W-36L01 Oceano Dunes Middle Paso Robles 12/25/1975 16.40 Flush Top Flush Mount 23.98 7.58 12N/36W-36L01 Oceano Dunes Middle Paso Robles 12/25/1975 16.20 Flush Top Flush Mount 23.98 7.78 12N/36W-36L01 Oceano Dunes Middle Paso Robles 11/25/1975 16.20 Flush Top Flush Mount 23.98 7.78 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L02 Oceano Dunes Deep Careaga 10/5/2021 26.43 Stove Pipe Top of Steel 26.77 0.345 12N/36W-36L02 Oceano Dunes Deep Careaga 7/13/2021 26.96 Stove Pipe Top of Steel 26.77 -0.185 12N/36W-36L02 Oceano Dunes Deep Careaga 4/6/2021 19.68 Stove Pipe Top of Steel 26.77 7.09 12N/36W-36L02 Oceano Dunes Deep Careaga 1/6/2021 20.29 Stove Pipe Top of Steel 26.77 6.48 12N/36W-36L02 Oceano Dunes Deep Careaga 10/7/2020 25.28 Stove Pipe Top of Steel 26.77 1.50 12N/36W-36L02 Oceano Dunes Deep Careaga 4/7/2020 14.90 Stove Pipe Top of Steel 26.77 11.88 12N/36W-36L02 Oceano Dunes Deep Careaga 1/7/2020 15.06 Stove Pipe Top of Steel 26.77 11.71 12N/36W-36L02 Oceano Dunes Deep Careaga 10/9/2019 24.32 Stove Pipe Top of Steel 26.77 2.45 12N/36W-36L02 Oceano Dunes Deep Careaga 7/9/2019 21.30 Stove Pipe Top of Steel 26.77 5.47 12N/36W-36L02 Oceano Dunes Deep Careaga 4/9/2019 15.72 Stove Pipe Top of Steel 26.77 11.05 12N/36W-36L02 Oceano Dunes Deep Careaga 1/8/2019 17.45 Stove Pipe Top of Steel 26.77 9.32 12N/36W-36L02 Oceano Dunes Deep Careaga 10/9/2018 25.10 Stove Pipe Top of Steel 26.77 1.67 12N/36W-36L02 Oceano Dunes Deep Careaga 7/10/2018 24.11 Stove Pipe Top of Steel 26.77 2.66 12N/36W-36L02 Oceano Dunes Deep Careaga 4/10/2018 16.02 Stove Pipe Top of Steel 26.77 10.75 12N/36W-36L02 Oceano Dunes Deep Careaga 1/10/2018 19.11 Stove Pipe Top of Steel 26.77 7.66 12N/36W-36L02 Oceano Dunes Deep Careaga 10/10/2017 24.70 Stove Pipe Top of Steel 26.77 2.07 12N/36W-36L02 Oceano Dunes Deep Careaga 7/11/2017 23.65 Stove Pipe Top of Steel 26.77 3.12 12N/36W-36L02 Oceano Dunes Deep Careaga 4/10/2017 15.00 Stove Pipe Top of Steel 26.77 11.77 12N/36W-36L02 Oceano Dunes Deep Careaga 1/10/2017 16.15 Stove Pipe Top of Steel 26.77 10.62 12N/36W-36L02 Oceano Dunes Deep Careaga 10/12/2016 27.86 Stove Pipe Top of Steel 26.77 -1.09 12N/36W-36L02 Oceano Dunes Deep Careaga 7/19/2016 25.76 Stove Pipe Top of Steel 26.77 1.01 12N/36W-36L02 Oceano Dunes Deep Careaga 4/12/2016 18.43 Stove Pipe Top of Steel 26.77 8.34 12N/36W-36L02 Oceano Dunes Deep Careaga 1/12/2016 16.27 Stove Pipe Top of Steel 26.77 10.50 12N/36W-36L02 Oceano Dunes Deep Careaga 10/13/2015 27.17 Stove Pipe Top of Steel 26.77 -0.40 12N/36W-36L02 Oceano Dunes Deep Careaga 7/14/2015 26.11 Stove Pipe Top of Steel 26.77 0.66 12N/36W-36L02 Oceano Dunes Deep Careaga 4/14/2015 22.24 Stove Pipe Top of Steel 26.77 4.53 12N/36W-36L02 Oceano Dunes Deep Careaga 1/13/2015 16.91 Stove Pipe Top of Steel 26.77 9.86 12N/36W-36L02 Oceano Dunes Deep Careaga 10/14/2014 26.30 Stove Pipe Top of Steel 26.77 0.47 12N/36W-36L02 Oceano Dunes Deep Careaga 7/29/2014 25.64 Stove Pipe Top of Steel 26.77 1.13 12N/36W-36L02 Oceano Dunes Deep Careaga 6/4/2014 25.22 Stove Pipe Top of Steel 26.77 1.55 12N/36W-36L02 Oceano Dunes Deep Careaga 4/15/2014 16.94 Stove Pipe Top of Steel 26.77 9.83 12N/36W-36L02 Oceano Dunes Deep Careaga 1/14/2014 18.76 Stove Pipe Top of Steel 26.77 8.01 12N/36W-36L02 Oceano Dunes Deep Careaga 10/14/2013 23.94 Stove Pipe Top of Steel 26.77 2.83 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L02 Oceano Dunes Deep Careaga 7/9/2013 23.15 Stove Pipe Top of Steel 26.77 3.62 12N/36W-36L02 Oceano Dunes Deep Careaga 4/10/2013 15.35 Stove Pipe Top of Steel 26.77 11.42 12N/36W-36L02 Oceano Dunes Deep Careaga 1/14/2013 11.24 Stove Pipe Top of Steel 26.77 15.53 12N/36W-36L02 Oceano Dunes Deep Careaga 10/31/2012 18.81 Stove Pipe Top of Steel 26.77 7.96 12N/36W-36L02 Oceano Dunes Deep Careaga 7/24/2012 19.05 Stove Pipe Top of Steel 26.77 7.72 12N/36W-36L02 Oceano Dunes Deep Careaga 4/18/2012 10.81 Stove Pipe Top of Steel 26.77 15.96 12N/36W-36L02 Oceano Dunes Deep Careaga 1/11/2012 11.18 Stove Pipe Top of Steel 26.77 15.59 12N/36W-36L02 Oceano Dunes Deep Careaga 11/21/2011 13.99 Stove Pipe Top of Steel 26.77 12.78 12N/36W-36L02 Oceano Dunes Deep Careaga 7/26/2011 18.03 Stove Pipe Top of Steel 26.77 8.74 12N/36W-36L02 Oceano Dunes Deep Careaga 1/24/2011 9.37 Stove Pipe Top of Steel 26.77 17.40 12N/36W-36L02 Oceano Dunes Deep Careaga 10/21/2010 19.77 Stove Pipe Top of Steel 26.77 7.00 12N/36W-36L02 Oceano Dunes Deep Careaga 7/27/2010 20.53 Stove Pipe Top of Steel 26.77 6.24 12N/36W-36L02 Oceano Dunes Deep Careaga 4/26/2010 9.24 Flush Top Flush Mount 23.98 14.74 12N/36W-36L02 Oceano Dunes Deep Careaga 10/21/2009 17.65 Flush Top Flush Mount 23.98 6.33 12N/36W-36L02 Oceano Dunes Deep Careaga 8/20/2009 19.15 Flush Top Flush Mount 23.98 4.83 12N/36W-36L02 Oceano Dunes Deep Careaga 5/11/2009 14.38 Flush Top Flush Mount 23.98 9.60 12N/36W-36L02 Oceano Dunes Deep Careaga 10/23/2008 18.73 Flush Top Flush Mount 23.98 5.25 12N/36W-36L02 Oceano Dunes Deep Careaga 4/23/2008 11.55 Flush Top Flush Mount 23.98 12.43 12N/36W-36L02 Oceano Dunes Deep Careaga 10/18/2007 17.70 Flush Top Flush Mount 23.98 6.28 12N/36W-36L02 Oceano Dunes Deep Careaga 4/18/2007 10.30 Flush Top Flush Mount 23.98 13.68 12N/36W-36L02 Oceano Dunes Deep Careaga 10/12/2006 14.36 Flush Top Flush Mount 23.98 9.62 12N/36W-36L02 Oceano Dunes Deep Careaga 4/20/2006 3.41 Flush Top Flush Mount 23.98 20.57 12N/36W-36L02 Oceano Dunes Deep Careaga 10/28/2005 14.10 Flush Top Flush Mount 23.98 9.88 12N/36W-36L02 Oceano Dunes Deep Careaga 4/29/2005 6.50 Flush Top Flush Mount 23.98 17.48 12N/36W-36L02 Oceano Dunes Deep Careaga 10/15/2004 16.57 Flush Top Flush Mount 23.98 7.41 12N/36W-36L02 Oceano Dunes Deep Careaga 4/29/2004 3.80 Flush Top Flush Mount 23.98 20.18 12N/36W-36L02 Oceano Dunes Deep Careaga 10/28/2003 11.73 Flush Top Flush Mount 23.98 12.25 12N/36W-36L02 Oceano Dunes Deep Careaga 10/17/2002 12.00 Flush Top Flush Mount 23.98 11.98 12N/36W-36L02 Oceano Dunes Deep Careaga 4/18/2002 5.80 Flush Top Flush Mount 23.98 18.18 12N/36W-36L02 Oceano Dunes Deep Careaga 10/5/2001 9.80 Flush Top Flush Mount 23.98 14.18 12N/36W-36L02 Oceano Dunes Deep Careaga 4/24/2001 1.80 Flush Top Flush Mount 23.98 22.18 12N/36W-36L02 Oceano Dunes Deep Careaga 10/13/2000 9.00 Flush Top Flush Mount 23.98 14.98 12N/36W-36L02 Oceano Dunes Deep Careaga 4/28/2000 3.40 Flush Top Flush Mount 23.98 20.58 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L02 Oceano Dunes Deep Careaga 4/23/1999 10.80 Flush Top Flush Mount 23.98 13.18 12N/36W-36L02 Oceano Dunes Deep Careaga 10/29/1998 10.19 Flush Top Flush Mount 23.98 13.79 12N/36W-36L02 Oceano Dunes Deep Careaga 10/24/1996 13.80 Flush Top Flush Mount 23.98 10.18 12N/36W-36L02 Oceano Dunes Deep Careaga 10/26/1995 14.50 Flush Top Flush Mount 23.98 9.48 12N/36W-36L02 Oceano Dunes Deep Careaga 4/19/1995 6.25 Flush Top Flush Mount 23.98 17.73 12N/36W-36L02 Oceano Dunes Deep Careaga 11/1/1994 15.50 Flush Top Flush Mount 23.98 8.48 12N/36W-36L02 Oceano Dunes Deep Careaga 4/11/1994 9.38 Flush Top Flush Mount 23.98 14.60 12N/36W-36L02 Oceano Dunes Deep Careaga 10/20/1993 16.10 Flush Top Flush Mount 23.98 7.88 12N/36W-36L02 Oceano Dunes Deep Careaga 5/3/1993 11.60 Flush Top Flush Mount 23.98 12.38 12N/36W-36L02 Oceano Dunes Deep Careaga 4/20/1993 9.50 Flush Top Flush Mount 23.98 14.48 12N/36W-36L02 Oceano Dunes Deep Careaga 11/4/1992 16.90 Flush Top Flush Mount 23.98 7.08 12N/36W-36L02 Oceano Dunes Deep Careaga 4/30/1992 11.50 Flush Top Flush Mount 23.98 12.48 12N/36W-36L02 Oceano Dunes Deep Careaga 10/11/1991 16.80 Flush Top Flush Mount 23.98 7.18 12N/36W-36L02 Oceano Dunes Deep Careaga 4/16/1991 10.83 Flush Top Flush Mount 23.98 13.15 12N/36W-36L02 Oceano Dunes Deep Careaga 10/11/1990 17.05 Flush Top Flush Mount 23.98 6.93 12N/36W-36L02 Oceano Dunes Deep Careaga 4/24/1990 11.39 Flush Top Flush Mount 23.98 12.59 12N/36W-36L02 Oceano Dunes Deep Careaga 10/12/1989 13.54 Flush Top Flush Mount 23.98 10.44 12N/36W-36L02 Oceano Dunes Deep Careaga 4/20/1989 8.90 Flush Top Flush Mount 23.98 15.08 12N/36W-36L02 Oceano Dunes Deep Careaga 10/25/1988 12.98 Flush Top Flush Mount 23.98 11.00 12N/36W-36L02 Oceano Dunes Deep Careaga 4/21/1988 8.40 Flush Top Flush Mount 23.98 15.58 12N/36W-36L02 Oceano Dunes Deep Careaga 10/19/1987 11.40 Flush Top Flush Mount 23.98 12.58 12N/36W-36L02 Oceano Dunes Deep Careaga 8/5/1987 11.40 Flush Top Flush Mount 23.98 12.58 12N/36W-36L02 Oceano Dunes Deep Careaga 4/13/1987 3.24 Flush Top Flush Mount 23.98 20.74 12N/36W-36L02 Oceano Dunes Deep Careaga 10/31/1986 7.51 Flush Top Flush Mount 23.98 16.47 12N/36W-36L02 Oceano Dunes Deep Careaga 4/27/1986 3.56 Flush Top Flush Mount 23.98 20.42 12N/36W-36L02 Oceano Dunes Deep Careaga 4/4/1985 4.10 Flush Top Flush Mount 23.98 19.88 12N/36W-36L02 Oceano Dunes Deep Careaga 10/24/1984 8.32 Flush Top Flush Mount 23.98 15.66 12N/36W-36L02 Oceano Dunes Deep Careaga 5/4/1982 3.12 Flush Top Flush Mount 23.98 20.86 12N/36W-36L02 Oceano Dunes Deep Careaga 10/19/1981 11.75 Flush Top Flush Mount 23.98 12.23 12N/36W-36L02 Oceano Dunes Deep Careaga 4/21/1981 4.14 Flush Top Flush Mount 23.98 19.84 12N/36W-36L02 Oceano Dunes Deep Careaga 10/20/1980 10.40 Flush Top Flush Mount 23.98 13.58 12N/36W-36L02 Oceano Dunes Deep Careaga 12/11/1979 9.30 Flush Top Flush Mount 23.98 14.68 12N/36W-36L02 Oceano Dunes Deep Careaga 11/13/1979 10.00 Flush Top Flush Mount 23.98 13.98 12N/36W-36L02 Oceano Dunes Deep Careaga 4/16/1979 5.46 Flush Top Flush Mount 23.98 18.52 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/36W-36L02 Oceano Dunes Deep Careaga 12/4/1978 9.90 Flush Top Flush Mount 23.98 14.08 12N/36W-36L02 Oceano Dunes Deep Careaga 5/4/1978 6.84 Flush Top Flush Mount 23.98 17.14 12N/36W-36L02 Oceano Dunes Deep Careaga 11/7/1977 16.20 Flush Top Flush Mount 23.98 7.78 12N/36W-36L02 Oceano Dunes Deep Careaga 5/17/1977 13.31 Flush Top Flush Mount 23.98 10.67 12N/36W-36L02 Oceano Dunes Deep Careaga 6/8/1976 12.75 Flush Top Flush Mount 23.98 11.23 12N/36W-36L02 Oceano Dunes Deep Careaga 1/14/1976 7.03 Flush Top Flush Mount 23.98 16.95 12N/36W-36L02 Oceano Dunes Deep Careaga 1/8/1976 6.50 Flush Top Flush Mount 23.98 17.48 12N/36W-36L02 Oceano Dunes Deep Careaga 11/25/1975 7.50 Flush Top Flush Mount 23.98 16.48 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/35W-32C03 County MW-3 Paso Robles 10/5/2021 46.24 Flush Top Flush Mount 47.70 1.46 12N/35W-32C03 County MW-3 Paso Robles 7/13/2021 44.75 Flush Top Flush Mount 47.70 2.95 12N/35W-32C03 County MW-3 Paso Robles 4/6/2021 38.84 Flush Top Flush Mount 47.70 8.86 12N/35W-32C03 County MW-3 Paso Robles 1/6/2021 39.92 Flush Top Flush Mount 47.70 7.78 12N/35W-32C03 County MW-3 Paso Robles 10/7/2020 43.03 Flush Top Flush Mount 47.70 4.67 12N/35W-32C03 County MW-3 Paso Robles 7/6/2020 41.31 Flush Top Flush Mount 47.70 6.39 12N/35W-32C03 County MW-3 Paso Robles 4/7/2020 31.48 Flush Top Flush Mount 47.70 16.22 12N/35W-32C03 County MW-3 Paso Robles 1/7/2020 35.29 Flush Top Flush Mount 47.70 12.41 12N/35W-32C03 County MW-3 Paso Robles 10/9/2019 42.42 Flush Top Flush Mount 47.70 5.28 12N/35W-32C03 County MW-3 Paso Robles 7/9/2019 37.20 Flush Top Flush Mount 47.70 10.50 12N/35W-32C03 County MW-3 Paso Robles 4/9/2019 32.50 Flush Top Flush Mount 47.70 15.20 12N/35W-32C03 County MW-3 Paso Robles 1/8/2019 35.45 Flush Top Flush Mount 47.70 12.25 12N/35W-32C03 County MW-3 Paso Robles 10/9/2018 43.85 Flush Top Flush Mount 47.70 3.85 12N/35W-32C03 County MW-3 Paso Robles 7/10/2018 40.00 Flush Top Flush Mount 47.70 7.70 12N/35W-32C03 County MW-3 Paso Robles 4/10/2018 32.80 Flush Top Flush Mount 47.70 14.90 12N/35W-32C03 County MW-3 Paso Robles 1/10/2018 35.10 Flush Top Flush Mount 47.70 12.60 12N/35W-32C03 County MW-3 Paso Robles 10/10/2017 42.05 Flush Top Flush Mount 47.70 5.65 12N/35W-32C03 County MW-3 Paso Robles 7/11/2017 38.34 Flush Top Flush Mount 47.70 9.36 12N/35W-32C03 County MW-3 Paso Robles 4/11/2017 28.44 Flush Top Flush Mount 47.70 19.26 12N/35W-32C03 County MW-3 Paso Robles 1/10/2017 34.85 Flush Top Flush Mount 47.70 12.85 12N/35W-32C03 County MW-3 Paso Robles 10/12/2016 47.49 Flush Top Flush Mount 47.70 0.21 12N/35W-32C03 County MW-3 Paso Robles 7/19/2016 44.51 Flush Top Flush Mount 47.70 3.19 12N/35W-32C03 County MW-3 Paso Robles 4/12/2016 36.41 Flush Top Flush Mount 47.70 11.29 12N/35W-32C03 County MW-3 Paso Robles 1/12/2016 36.48 Flush Top Flush Mount 47.70 11.22 12N/35W-32C03 County MW-3 Paso Robles 10/13/2015 51.21 Flush Top Flush Mount 47.70 -3.51 12N/35W-32C03 County MW-3 Paso Robles 7/14/2015 49.07 Flush Top Flush Mount 47.70 -1.37 12N/35W-32C03 County MW-3 Paso Robles 4/14/2015 44.00 Flush Top Flush Mount 47.70 3.70 12N/35W-32C03 County MW-3 Paso Robles 1/13/2015 38.90 Flush Top Flush Mount 47.70 8.80 12N/35W-32C03 County MW-3 Paso Robles 10/14/2014 50.50 Flush Top Flush Mount 47.70 -2.80 12N/35W-32C03 County MW-3 Paso Robles 7/29/2014 44.02 Flush Top Flush Mount 47.70 3.68 12N/35W-32C03 County MW-3 Paso Robles 6/4/2014 45.46 Flush Top Flush Mount 47.70 2.24 12N/35W-32C03 County MW-3 Paso Robles 4/15/2014 41.51 Flush Top Flush Mount 47.70 6.19 12N/35W-32C03 County MW-3 Paso Robles 1/14/2014 41.00 Flush Top Flush Mount 47.70 6.70 12N/35W-32C03 County MW-3 Paso Robles 10/14/2013 45.26 Flush Top Flush Mount 47.70 2.44 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Level Data Well Common Name Aquifer Date Depth to Water (feet) Surface Completion RP Description RP Elev, feet NAVD88 Groundwater Elevation (feet VD88) 12N/35W-32C03 County MW-3 Paso Robles 7/9/2013 43.83 Flush Top Flush Mount 47.70 3.87 12N/35W-32C03 County MW-3 Paso Robles 4/10/2013 37.89 Flush Top Flush Mount 47.70 9.81 12N/35W-32C03 County MW-3 Paso Robles 1/14/2013 32.26 Flush Top Flush Mount 47.70 15.44 12N/35W-32C03 County MW-3 Paso Robles 10/30/2012 40.05 Flush Top Flush Mount 47.70 7.65 12N/35W-32C03 County MW-3 Paso Robles 7/25/2012 38.62 Flush Top Flush Mount 47.70 9.08 12N/35W-32C03 County MW-3 Paso Robles 4/19/2012 23.02 Flush Top Flush Mount 47.70 24.68 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WL_SentryWells.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/12E-24B01 10/6/2021 2,900 1400 580 33 200 200 410 190 0.5 1.9 0.14 0.25 0.083 1.4 4.6 410 8.2 8.2 4,960 4 32S/12E-24B01 4/7/2021 2,800 1300 470 25 170 180 410 170 0.12 2 0.12 0.13 0.096 1.3 4.2 410 8.2 8.2 2.4 32S/12E-24B01 10/12/2020 3,100 1,400 520 28.0 180.0 180 420 210 0 2.00 0.12 0.300 0.110 1.30 3.80 420 0 0 4,840 2.0 32S/12E-24B01 4/22/2020 2,800 1,300 510 27.0 170.0 170 400 190 0 2.10 0.13 0.000 0.120 1.30 3.90 400 0 0 4,930 3.2 32S/12E-24B01 10/14/2019 3,100 1,300 540 29.0 180.0 180 410 180 0 1.90 0.15 0.150 0.012 1.30 3.70 410 0 0 4,900 2.7 32S/12E-24B01 4/10/2019 2,800 1,400 520 35 180 190 430 200 ND 2 0.15 ND 0.11 1.4 4.0 430 ND ND 5,260 2.1 32S/12E-24B01 10/9/2018 2,800 1,400 600 35 180 190 410 190 ND 2 0.15 ND 0.11 1.4 2.8 410 ND ND 5,040 22 32S/12E-24B01 4/11/2018 3,000 1,400 560 33 170 180 430 200 0.25 2.0 0.15 ND 0.11 1.4 5.1 430 ND ND 5,150 2.2 32S/12E-24B01 10/11/2017 3,100 1,400 590 36 180 190 430 190 ND 2.3 0.17 0.13 0.11 1.4 0.64 430 ND ND 5,180 1.7 32S/12E-24B01 4/11/2017 3,400 1,400 680 41 190 210 420 190 ND 2.4 0.16 0.17 0.11 1.6 4.7 420 ND ND 5,020 1.8 32S/12E-24B01 10/11/2016 3,100 1,400 700 44 210 220 450 190 0.26 2.1 0.18 ND 0.12 1.6 4.1 450 ND ND 5,020 1.3 32S/12E-24B01 4/12/2016 2,800 1,400 640 37 170 180 420 190 <0.48 2.2 0.16 <0.055 0.081 1.3 4.8 420 <8.2 <8.2 5,000 0.73 32S/12E-24B01 10/15/2015 3,230 230 560 34 160 170 413 42 <0.05 2.2 0.14 <0.10 0.091 1.1 0.68 413 <10 <10 4,880 0.54 32S/12E-24B01 4/15/2015 3,010 1,300 510 30 150 160 410 220 <0.05 2.9 0.15 <0.5 0.023 1.0 3.4 410 <10 <10 4,760 0.72 32S/12E-24B01 1/14/2015 2,980 1,300 520 30 150 170 400 210 <0.25 2.2 0.14 <0.5 <0.021 1.0 2.9 400 <10 <10 4,640 0.52 32S/12E-24B01 10/14/2014 3,160 1,100 530 32 150 170 390 180 0.32 2.2 0.16 <0.5 <0.01 1.1 <0.5 390 <10 <10 4,780 0.67 32S/12E-24B01 7/30/2014 2,950 1,300 520 29 140 170 440 190 <0.25 1.9 0.11 <0.5 0.03 1.1 2.6 440 <10 <10 4,830 0.62 32S/12E-24B01 4/16/2014 2,880 1,200 560 29 140 140 390 190 <0.05 2.2 0.130 <0.5 0.03 0.92 2.9 390 <10 <10 4,790 0.72 32S/12E-24B01 1/15/2014 2,870 1,300 540 30 140 160 380 214 <0.25 2.4 0.17 <0.5 <0.01 1.0 3.0 380 <10 <10 4,800 0.71 32S/12E-24B01 10/15/2013 2,860 1,200 560 31 150 160 380 200 <0.25 2.2 0.13 <0.5 <0.01 1.0 3.0 380 <10 <10 4,810 0.75 32S/12E-24B01 7/9/2013 2,960 1,300 560 32 150 160 395 215 <0.25 2.4 0.16 <0.5 <0.01 1.1 2.0 395 <10 <10 4,850 0.81 32S/12E-24B01 4/10/2013 2,920 1,300 540 30 140 150 410 220 <0.25 1.9 0.16 <0.1 <0.01 1.00 3.5 410 <10 <10 4,830 0.67 32S/12E-24B01 1/14/2013 2,630 1,300 540 30 140 140 410 220 <0.05 2.7 0.15 <0.1 <0.01 0.96 2.8 410 <10 <10 4,790 0.72 32S/12E-24B01 10/29/2012 2,950 1,200 590 34 150 160 360 200 <0.25 2.4 0.18 <0.5 <0.01 1.1 11 360 <10 <10 4,750 0.78 32S/12E-24B01 7/23/2012 3,010 1,400 530 30 120 130 397 210 <0.05 2.1 0.15 <0.1 0.041 0.86 3 397 <10 <10 4,720 1.4 32S/12E-24B01 4/18/2012 3,000 1,500 450 27 120 120 400 230 <0.1 2 0.13 0.13 <0.01 0.89 3.12 400 <10 <10 4,660 0.6 32S/12E-24B01 1/11/2012 2,750 1,200 520 30 140 140 400 170 <0.1 4 0.18 0.1 0.033 0.94 3.2 400 <10 <10 4,560 0.55 32S/12E-24B01 11/21/2011 2,740 1,200 410 25 130 120 380 200 <0.3 2.3 0.13 <0.6 0.053 0.9 2.73 380 <10 <10 4,470 0.7 32S/12E-24B01 7/25/2011 3,690 1,200 530 33 140 150 380 200.2 <0.05 1.8 0.14 <0.1 0.053 0.91 3.281 380 <5 <5 4,900 0.73 32S/12E-24B01 4/20/2011 2,810 1,214 500 27 140 130 400 216 <0.05 1.7 0.24 0.18 0.067 0.95 3.3 400 <2.0 <2.0 4,430 NA 32S/12E-24B01 1/24/2011 2,380 1,100 370 24 110 120 380 180 <0.15 1.8 0.16 <0.3 0.63 0.68 2.8 380 <2.0 <2.0 4,020 0.89 32S/12E-24B01 10/28/2010 2,330 960 390 25 140 140 350 160 <0.1 3.9 0.15 <0.1 NA 0.75 2.6 350 <10 <10 3,860 1.3 32S/12E-24B01 7/27/2010 616 43 52.5 6.21 115 44.7 341 160 < 0.10 2.9 0.063 < 0.10 0.11 0.274 0.18 341 < 1.0 < 1.0 1,000 9.34 32S/12E-24B01 4/27/2010 676 47 54.7 4.60 107 43.6 327 140 < 0.10 0.98 0.0714 < 0.10 < 0.10 0.0458 0.18 327 < 1.0 < 1.0 990 4.06 32S/12E-24B01 1/27/2010 694 55 56.2 6.80 123 43.2 340 150 0.40 1.7 0.12 < 0.10 0.33 0.875 0.19 340 < 1.0 < 1.0 1,000 16.6 32S/12E-24B01 10/19/2009 766 140 121 16.7 111 52.4 303 150 0.25 2.8 0.0959 0.11 < 0.10 0.208 0.47 303 < 1.0 < 1.0 1,200 7.79 32S/12E-24B01 8/20/2009 705 94 86.8 11.7 116 35.6 286 150 0.21 2.7 NA < 0.10 0.12 0.248 0.38 286 < 1.0 < 1.0 1,000 7.15 32S/12E-24B01 5/12/2009 695 100 82.1 13.2 108 45 288 150 NA NA NA 0.11 NA 0.66 0.29 288 < 1.0 < 1.0 1,100 23.9 32S/12E-24B01 3/26/1996 1,870 773 380 24.0 125 95 427 154 0.0452 NA 0.27 NA NA NA NA NA NA NA NA NA 32S/12E-24B01 6/9/1976 1,706 667 400 16.2 94 95 474 159 0.0904 NA 0.12 0.5 NA NA NA NA NA NA NA NA 32S/12E-24B01 1/17/1966 1,700 652 406 20.0 95 83 440 175 1 NA 0.07 0.3 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/12E-24B02 10/6/2021 630 32 44 3.3 110 32 280 160 0.1 0.22 0.1 0.048 0.012 0.17 0.12 280 4.1 4.1 929 0.5 32S/12E-24B02 7/15/2021 560 30 44 3.3 110 34 320 160 0.024 0.4 0.042 0.043 0.014 0.17 0.096 320 4.1 4.1 949 0.47 32S/12E-24B02 4/7/2021 630 29 42 3.2 100 35 320 160 0.024 0.24 0.064 0.062 0.0099 0.16 0.11 320 4.1 4.1 0.45 32S/12E-24B02 1/7/2021 590 30 45 3.3 110 36 320 170 0.024 0.63 0.073 0.064 0.014 0.17 0.082 320 4.1 4.1 922 0.54 32S/12E-24B02 10/12/2020 700 31 46 3.6 120.0 36 320 160 0 0.21 0.07 0.054 0.014 0.18 0.10 320 0 0 936 0.5 32S/12E-24B02 7/7/2020 690 31 48 3.6 120.0 35 300 170 0 0.23 0.07 0.047 0.014 0.18 0.08 300 4 4 945 0.5 32S/12E-24B02 4/22/2020 560 31 41 3.4 100.0 32 330 160 0 0.28 0.06 0.026 0.014 0.16 0.00 330 0 0 960 0.5 32S/12E-24B02 1/15/2020 660 31 47 4.0 120.0 37 320 160 0 0.23 0.08 0.055 0.017 0.18 0.14 320 0 0 900 0.6 32S/12E-24B02 10/14/2019 700 30 45 3.7 110.0 35 310 160 0 0.10 0.08 0.046 0.110 0.18 0.00 310 0 0 931 0.6 32S/12E-24B02 7/10/2019 550 30 48 4.2 120.0 37 320 160 0 0.34 0.07 0.037 0.015 0.18 0.00 320 0 0 931 0.6 32S/12E-24B02 4/10/2019 620 31 42 3.6 110 35 320 160 ND 0.31 0.070 0.059 ND 0.17 0.130 320 ND ND 941 0.59 32S/12E-24B02 1/8/2019 630 30 43 3.6 110 35 310 160 ND 0.27 0.072 0.056 0.013 0.17 0.096 310 ND ND 938 0.59 32S/12E-24B02 10/9/2018 640 30 48 3.8 120 37 320 160 ND 0.34 0.068 0.025 0.013 0.18 0.06 320 ND ND 952 0.62 32S/12E-24B02 7/12/2018 620 29 46 3.7 120 36 320 150 ND 0.30 0.072 0.042 0.013 0.17 0.11 320 ND ND 962 0.69 32S/12E-24B02 4/11/2018 660 31 45 3.5 110 35 320 160 0.034 0.28 0.069 0.050 0.011 0.17 0.10 320 ND ND 942 0.58 32S/12E-24B02 1/12/2018 570 30 53 3.8 120 38 320 160 ND 0.32 0.071 0.068 0.015 0.18 0.11 320 ND ND 930 0.56 32S/12E-24B02 10/11/2017 670 31 45 3.7 120 38 330 160 ND 0.41 0.077 0.045 0.014 0.18 0.1 330 ND ND 962 0.74 32S/12E-24B02 7/12/2017 760 31 48 4 130 39 310 160 ND 0.18 0.072 0.04 0.015 0.2 0.12 310 ND ND 948 0.93 32S/12E-24B02 4/11/2017 630 34 46 3.7 120 35 310 170 ND 0.31 0.062 0.09. 0.017 0.17 0.12 310 ND ND 933 0.59 32S/12E-24B02 1/12/2017 660 34 47 3.7 120 36 320 170 ND 0.26 0.069 0.031 0.023 0.2 0.097 320 ND ND 938 0.79 32S/12E-24B02 10/11/2016 660 35 48 4 120 39 320 170 ND 0.26 0.069 0.038 0.023 0.18 0.12 320 ND ND 953 0.75 32S/12E-24B02 7/19/2016 660 36 50 3.9 120 38 320 160 <0.022 0.15 0.07 0.036 0.016 0.17 0.15 320 <4.1 <4.1 947 0.67 32S/12E-24B02 4/12/2016 640 35 48 3.8 110 37 300 160 <0.022 0.38 0.064 0.045 0.011 0.17 0.13 300 <4.1 <4.1 939 0.53 32S/12E-24B02 1/12/2016 570 38 48 3.8 110 36 290 170 <0.022 0.27 0.044 0.11 0.015 0.16 0.15 290 <4.1 <4.1 951 0.48 32S/12E-24B02 10/15/2015 650 34 41 3.8 100 33 306 160 <0.05 <1 0.054 <0.10 0.014 0.18 <0.10 306 <10 <10 950 0.72 32S/12E-24B02 7/15/2015 650 35 50 3.0 120 36 295 160 <0.05 <1 0.069 <0.1 0.01 0.16 <0.1 295 <10 <10 950 0.69 32S/12E-24B02 4/15/2015 620 35 40 3.4 100 31 300 170 <0.05 <1 0.066 <0.1 0.01 0.14 <0.1 300 <10 <10 900 0.45 32S/12E-24B02 1/14/2015 640 36 41 3.3 110 32 290 170 <0.05 <1 0.062 <0.1 <0.01 0.14 <0.1 290 <10 <10 900 0.48 32S/12E-24B02 10/14/2014 630 30 41 3.9 100 32 290 140 <0.05 <1 0.065 <0.1 <0.01 0.15 <0.1 290 <10 <10 940 0.44 32S/12E-24B02 7/29/2014 620 33 42 3.5 100 33 300 150 <0.05 <1 <0.1 <0.1 <0.01 0.14 <0.1 300 <10 <10 940 0.37 32S/12E-24B02 4/16/2014 630 32 43 4.3 88 28 300 150 <0.05 <1 0.067 <0.1 <0.01 0.12 <0.1 300 <10 <10 940 0.32 32S/12E-24B02 1/15/2014 630 33 46 3.9 100 34 290 165 <0.05 <1 <0.05 <0.1 <0.01 0.14 <0.1 290 <10 <10 940 0.37 32S/12E-24B02 10/15/2013 630 30 44 3.8 98 32 290 170 <0.05 <1 <0.05 <0.1 <0.01 0.13 <0.1 290 <10 <10 920 0.39 32S/12E-24B02 7/9/2013 630 30 43 3.9 110 33 295 170 <0.05 <1 0.076 <0.1 <0.01 0.14 <0.1 295 <10 <10 940 0.6 32S/12E-24B02 4/10/2013 630 31 44 4 100 32 310 160 <0.05 <1 0.08 <0.1 <0.01 0.13 <0.1 310 <10 <10 940 0.41 32S/12E-24B02 1/14/2013 620 30 43 4 97 31 305 170 <0.05 <1 0.079 <0.1 <0.01 0.12 <0.1 305 <10 <10 950 0.72 32S/12E-24B02 10/29/2012 650 29 45 4.2 100 32 280 160 <0.05 <1 0.074 0.14 <0.01 0.13 <0.1 280 <10 <10 950 0.56 32S/12E-24B02 7/23/2012 650 35 45 4.3 87 27 297 170 <0.05 <1 <0.1 <0.1 <0.01 0.12 <0.1 297 <10 <10 950 0.43 32S/12E-24B02 4/18/2012 630 37 39 3.7 88 28 310 171 <0.1 <1 <0.1 0.16 <0.01 0.099 <0.2 310 <10 <10 950 0.26 32S/12E-24B02 1/11/2012 650 33 46 4.6 110 32 300 150 <0.1 1.3 <0.1 0.21 <0.02 0.13 0.03 300 <10 <10 950 1.7 32S/12E-24B02 11/21/2011 640 32 39 3.9 93 29 290 150 <0.05 <1 0.064 <0.1 <0.01 0.096 <0.1 290 <10 <10 930 0.32 32S/12E-24B02 7/25/2011 640 36 48 4.2 97 31 290 165.3 <0.05 <1 <0.1 <0.1 <0.01 0.096 <0.1 290 <5 <5 950 0.88 32S/12E-24B02 4/20/2011 620 39 46 7.4 90 36 320 174 <0.05 <1 0.17 0.14 0.014 <0.005 <0.1 320 <2.0 <2.0 950 NA 32S/12E-24B02 1/24/2011 640 43 44 5.9 87 28 270 170 <0.05 <1.0 0.11 <0.1 0.14 0.085 <0.1 270 <2.0 <2.0 940 1.3 32S/12E-24B02 10/28/2010 650 43 50 4.5 110 35 270 160 <0.1 <1.0 0.12 <0.1 NA 0.085 <0.3 270 <10 <10 970 0.63 32S/12E-24B02 7/27/2010 598 42 48.9 4.29 111 40.5 318 160 < 0.10 1.3 0.0609 < 0.10 0.11 0.106 0.15 318 < 1.0 < 1.0 980 2.84 32S/12E-24B02 4/27/2010 668 46 52.7 4.73 111 43.2 349 150 < 0.10 1.3 0.0666 < 0.10 0.14 0.101 0.16 349 < 1.0 < 1.0 980 6.66 32S/12E-24B02 1/27/2010 622 45 58.0 5.39 115 32.2 270 160 0.18 0.84 0.117 < 0.10 0.14 0.209 0.16 270 < 1.0 < 1.0 920 3.49 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/12E-24B02 10/19/2009 600 49 59.1 5.12 112 30.1 281 160 < 0.10 0.98 0.0776 0.14 < 0.10 0.163 0.19 281 < 1.0 < 1.0 870 1.14 32S/12E-24B02 8/20/2009 630 49 63.5 5.85 128 30.1 288 150 < 0.10 0.98 NA < 0.10 < 0.10 0.203 0.20 288 < 1.0 < 1.0 920 3.22 32S/12E-24B02 5/12/2009 622 82 67.5 6.33 114 34.5 282 150 NA NA NA 0.11 NA 0.252 0.24 282 < 1.0 < 1.0 990 6.76 32S/12E-24B02 3/26/1996 652 54 46 5 107 24 344 169 0.0452 NA 0.1 NA NA NA NA NA NA NA NA NA 32S/12E-24B02 6/9/1976 565 34 52 4 104 27 337 153 0.1355 NA 0.02 0.5 NA NA NA NA NA NA NA NA 32S/12E-24B02 1/17/1966 651 62 79 5 101 32 380 147 0 NA 0.05 0.3 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/12E-24B03 10/6/2021 660 53 56 3.6 120 43 320 160 0.1 0.16 0.092 0.05 0.018 0.0098 0.16 320 8.2 8.2 1,010 0.044 32S/12E-24B03 7/15/2021 590 51 51 3.6 110 40 320 160 0.024 0.14 0.038 0.025 0.02 0.0093 0.17 320 8.2 8.2 1,020 0.19 32S/12E-24B03 4/7/2021 670 49 51 3.7 100 40 330 160 0.024 0.088 0.059 0.036 0.016 0.011 0.17 330 8.2 8.2 0.18 32S/12E-24B03 1/7/2021 490 51 53 3.9 110 41 330 170 0.024 0.39 0.068 0.026 0.02 0.01 0.21 330 4.1 4.1 992 0.17 32S/12E-24B03 10/12/2020 740 51 53 3.8 110.0 40 320 170 0 0.00 0.06 0.032 0.021 0.01 0.16 320 0 0 1,010 0.3 32S/12E-24B03 7/7/2020 760 53 55 3.9 110.0 42 330 170 0 0.20 0.06 0.050 0.021 0.01 0.22 330 8 8 1,020 0.2 32S/12E-24B03 4/22/2020 570 50 50 3.7 110.0 39 330 160 0 0.12 0.06 0.000 0.022 0.01 0.17 330 0 0 1,040 0.3 32S/12E-24B03 1/15/2020 590 50 55 4.0 120.0 42 330 160 0 0.08 0.07 0.000 0.025 0.01 0.13 330 0 0 972 0.3 32S/12E-24B03 10/14/2019 660 48 56 4.0 120.0 40 330 170 0 0.11 0.07 0.029 0.018 0.01 0.18 330 0 0 1,010 0.3 32S/12E-24B03 7/10/2019 590 49 53 4.2 110.0 44 330 160 0 0.15 0.07 0.020 0.018 0.01 0.18 330 0 0 1,000 0.2 32S/12E-24B03 4/10/2019 640 50 50 3.7 110 43 320 160 ND 0.15 0.063 0.037 0.017 0.012 0.16 320 ND ND 1,020 0.44 32S/12E-24B03 1/8/2019 660 50 50 3.9 110 43 320 160 ND 0.12 0.065 0.039 0.021 0.011 0.14 320 ND ND 1,020 0.21 32S/12E-24B03 10/9/2018 690 48 52 4.1 110 45 320 160 ND 0.19 0.065 ND 0.020 0.011 0.10 320 ND ND 1,030 0.19 32S/12E-24B03 7/12/2018 650 47 51 3.8 110 42 320 150 ND 0.14 0.062 0.023 0.020 0.10 0.16 320 ND ND 1,040 0.18 32S/12E-24B03 4/11/2018 670 50 53 4.0 110 44 320 160 ND 0.11 0.065 0.017 0.019 0.011 0.19 320 ND ND 1,010 0.19 32S/12E-24B03 1/12/2018 620 48 57 3.9 110 45 330 160 ND 0.13 0.061 0.041 0.023 0.011 0.18 330 ND ND 993 0.19 32S/12E-24B03 10/11/2017 660 49 54 4 120 45 330 160 ND 0.16 0.069 0.022 0.02 0.011 0.19 330 ND ND 1020 0.20 32S/12E-24B03 7/12/2017 790 46 54 4 120 45 320 160 ND ND 0.062 0.015 0.02 0.011 0.18 320 ND ND 1,010 0.19 32S/12E-24B03 4/11/2017 670 48 55 4.1 120 45 330 160 ND 0.17 0.058 ND 0.019 0.012 0.21 330 ND ND 988 0.23 32S/12E-24B03 1/12/2017 670 47 58 4.3 130 50 340 160 ND ND 0.068 0.012 0.024 0.014 0.18 340 ND ND 1,000 0.27 32S/12E-24B03 10/11/2016 680 49 53 4 110 47 340 160 ND ND 0.06 0.015 0.025 0.013 0.17 340 ND ND 1020 0.22 32S/12E-24B03 7/19/2016 690 47 54 4.1 110 46 340 160 <0.022 0.32 0.063 0.017 0.016 0.013 0.20 340 <8.2 <8.2 1,010 0.32 32S/12E-24B03 4/12/2016 680 48 55 4.1 110 45 320 160 <0.022 0.21 0.056 0.019 0.018 0.012 0.17 320 <8.2 <8.2 1,010 0.28 32S/12E-24B03 1/12/2016 610 51 53 4.0 110 46 320 170 <0.022 0.11 0.037 0.038 <0.10 0.015 0.19 320 <8.2 <8.2 1,050 0.27 32S/12E-24B03 10/15/2015 650 44 48 4.4 100 42 325 160 <0.05 <1 <0.05 <0.10 0.016 0.010 <0.10 325 <10 <10 1,020 0.21 32S/12E-24B03 7/15/2015 680 46 60 40.0 120 47 333 160 <0.05 <1 0.064 <0.1 0.01 0.010 <0.1 333 <10 <10 1,020 0.20 32S/12E-24B03 4/15/2015 650 46 44 3.5 96 38 330 170 <0.05 <1 0.061 <0.1 0.012 0.0080 <0.1 330 <10 <10 980 0.17 32S/12E-24B03 1/14/2015 670 47 48 3.6 110 43 330 170 <0.05 <1 0.052 <0.10 0.01 0.090 <0.1 330 <10 <10 970 0.17 32S/12E-24B03 10/14/2014 650 40 48 4.1 100 41 330 142 <0.05 <1 0.061 <0.1 <0.01 0.010 <0.1 330 <10 <10 1,010 0.19 32S/12E-24B03 7/30/2014 650 45 45 3.1 94 40 390 150 <0.05 <1 <0.1 <0.1 <0.01 <0.005 <0.1 390 <10 <10 1,020 0.19 32S/12E-24B03 4/16/2014 660 43 46 4.3 90 35 330 150 0.23 <1 0.056 <0.1 <0.01 <0.005 0.11 330 <10 <10 1,010 0.16 32S/12E-24B03 1/15/2014 660 45 52 4.0 100 41 320 165 <0.05 <1 <0.05 <0.1 <0.01 0.0090 <0.1 320 <10 <10 1,010 0.17 32S/12E-24B03 10/15/2013 720 40 51 4.0 100 40 310 170 <0.05 <1 <0.05 <0.1 <0.01 0.0090 <0.1 310 <10 <10 1,010 0.2 32S/12E-24B03 7/9/2013 660 46 47 3.9 110 41 310 170 <0.05 <1 0.066 <0.1 <0.01 0.0100 <0.1 310 <10 <10 1,010 0.27 32S/12E-24B03 4/10/2013 670 44 46 3.8 96 38 320 160 <0.05 <1 0.071 <0.1 <0.01 0.0080 <0.1 320 <10 <10 1,010 0.19 32S/12E-24B03 1/14/2013 630 45 47 3.9 96 37 320 170 <0.05 <1 0.065 <0.1 <0.01 0.0080 <0.1 320 <10 <10 1,010 0.26 32S/12E-24B03 10/29/2012 680 45 49 4.1 100 39 305 158 <0.05 <1 0.069 0.1 <0.01 0.0090 <0.1 305 <10 <10 1,010 0.22 32S/12E-24B03 7/23/2012 670 49 47 4.1 86 35 318 170 <0.05 <1 <0.1 <0.1 <0.01 0.0150 <0.1 318 <10 <10 1,010 0.24 32S/12E-24B03 4/18/2012 640 50 40 3.4 84 33 320 160 <0.1 <1 <0.1 <0.2 <0.01 0.0070 <0.2 320 <10 <10 1,010 0.23 32S/12E-24B03 1/12/2012 660 46 48 3.2 92 36 300 150 <0.1 <1 <0.1 0.35 <0.02 0.0080 <0.2 300 <10 <10 1,000 0.15 32S/12E-24B03 11/21/2011 660 43 41 3.7 91 34 310 150 <0.05 1.6 0.046 <0.1 0.014 0.0090 <0.1 310 <10 <10 970 0.12 32S/12E-24B03 7/25/2011 650 46 50 6.0 98 38 310 159.6 <0.05 <1 <0.1 <0.1 0.011 0.0100 <0.1 310 <5 <5 1,010 0.21 32S/12E-24B03 4/20/2011 650 47 48 4.6 95 31 310 168 <0.05 <1 0.11 0.08 0.015 0.0080 <0.1 310 <2.0 <2.0 1,020 NA 32S/12E-24B03 1/24/2011 660 46 44 5.6 87 33 320 160 <0.05 <1.0 NA <0.1 0.15 0.0096 <0.1 320 <2.0 <2.0 1,020 0.22 32S/12E-24B03 10/28/2010 660 44 48 3.8 110 39 315 50 <0.1 <1.0 0.089 <0.1 NA 0.0120 <0.3 315 <10 <10 1,020 0.55 32S/12E-24B03 7/27/2010 610 44 51.4 8.34 112 41.6 328 160 < 0.10 1.8 0.0533 < 0.10 0.17 0.0602 0.16 328 < 1.0 < 1.0 1,000 6.7 32S/12E-24B03 4/27/2010 666 45 53.2 4.84 118 44 357 150 < 0.10 1.5 0.0636 < 0.10 0.1 0.0519 0.17 357 < 1.0 < 1.0 980 9.71 32S/12E-24B03 1/27/2010 672 48 56.4 5.40 119 43.4 336 150 < 0.10 1.4 0.101 < 0.10 0.15 0.140 0.15 336 < 1.0 < 1.0 1,000 5.18 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/12E-24B03 10/19/2009 622 40 55.1 3.93 110 42.6 342 160 < 0.10 < 0.50 0.0613 < 0.10 0.13 0.0181 0.14 342 < 1.0 < 1.0 880 0.343 32S/12E-24B03 8/19/2009 680 47 54.9 5.21 128 43.4 337 150 < 0.10 2.2 NA < 0.10 0.66 0.182 0.15 337 < 1.0 < 1.0 1,000 14.3 32S/12E-24B03 5/12/2009 645 44 53.2 4.53 108 41.8 332 140 NA NA NA < 0.10 NA 0.124 0.16 332 < 1.0 < 1.0 1,000 5.9 32S/12E-24B03 3/26/1996 646 41 52 4.3 104 42 412 164 0.0452 NA 0.12 NA NA NA NA NA NA NA NA NA 32S/12E-24B03 6/9/1976 569 36 53 3.7 85 39 330 165 0 NA 0.06 0.4 NA NA NA NA NA NA NA NA 32S/12E-24B03 1/17/1966 670 79 74 5 103 36 345 158 1 NA 0 0.2 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30F01 10/6/2021 450 67 71 1.9 47 21 81 120 13 0.19 0.12 0.056 0.1 0.01 0.26 81 4.1 4.1 710 0.05 32S/13E-30F01 4/7/2021 670 70 66 1.9 41 20 85 130 13 0.17 0.078 0.09 0.005 0.004 0.31 85 4.1 4.1 0.03 32S/13E-30F01 10/12/2020 490 66 68 2.0 44.0 20 83 120 13 0.12 0.08 0.057 0.000 0.00 0.26 83 0 0 700 0.0 32S/13E-30F01 4/22/2020 500 64 68 2.1 44.0 19 84 120 13 0.15 0.08 0.033 0.000 0.00 0.26 84 0 0 719 0.0 32S/13E-30F01 10/14/2019 460 62 69 2.0 43.0 18 82 120 13 0.11 0.09 0.046 0.000 0.00 0.29 82 0 0 696 0.1 32S/13E-30F01 4/10/2019 480 61 60 2.1 41 19 85 120 13 0.12 0.09 0.06 ND ND 0.19 85 ND ND 693 0.04 32S/13E-30F01 10/10/2018 460 62 72 2.3 44 21 84 120 13 0.09 0.09 0.034 ND ND 0.16 84 ND ND 696 ND 32S/13E-30F01 4/12/2018 470 58 69 2.3 44 21 82 110 12 0.14 0.09 0.030 ND ND 0.23 82 ND ND 699 ND 32S/13E-30F01 10/11/2017 500 68 67 2.2 46 23 97 120 13 0.18 0.093 0.045 ND 0.018 0.28 97 ND ND 752 0.061 32S/13E-30F01 4/12/2017 510 61 65 2.1 42 20 85 120 13 0.12 0.074 0.062 ND ND 0.28 85 ND ND 682 0.045 32S/13E-30F01 10/11/2016 480 62 72 2.3 46 23 91 120 12 0.13 0.09 0.046 ND ND 0.32 91 ND ND 702 ND 32S/13E-30F01 4/13/2016 460 60 70 2.3 43 21 90 120 12 0.2 0.086 0.054 <0.01 <.0040 0.30 90 <4.1 <4.1 696 <0.030 32S/13E-30F01 10/14/2015 450 58 61 2.1 39 19 87 120 13 <1 0.084 <0.10 <0.01 <0.005 0.18 87 <10 <10 700 <0.05 32S/13E-30F01 4/15/2015 460 64 60 2.0 40 19 90 130 12 <1 0.081 <0.1 <0.01 <0.005 0.202 90 <10 <10 700 <0.05 32S/13E-30F01 1/14/2015 550 95 69 2 50 24 98 140 12.50 <1 0.085 <0.1 <0.01 <0.005 0.2 98 <10 <10 820 <0.05 32S/13E-30F01 10/14/2014 470 58 64 2 42 19 84 120 10.00 <1 0.081 <0.1 <0.01 <0.005 0.2 84 <10 <10 730 <0.05 32S/13E-30F01 7/30/2014 540 89 71 2 46 24 94 130 13.6 <1 <0.1 <0.1 <0.01 <0.005 0.101 94 <10 <10 860 <0.05 32S/13E-30F01 4/16/2014 610 122 78 3.3 47 22 100 140 12 <1 0.100 <0.1 <0.01 <0.005 0.17 100 <10 <10 970 <0.05 32S/13E-30F01 1/15/2014 510 80 69 2.3 45 22 94 136 12.6 13.00 <0.1 <0.1 <0.01 <0.005 0.19 94 <10 <10 810 <0.05 32S/13E-30F01 10/15/2013 530 78 73 2.3 47 22 86 140 12 <1 0.072 <0.1 <0.01 <.005 0.17 86 <10 <10 830 <0.05 32S/13E-30F01 7/10/2013 480 80 64 2.2 49 22 85 140 12.2 <1 0.089 <0.1 <0.01 <0.005 <0.1 85 <10 <10 770 <0.05 32S/13E-30F01 4/11/2013 460 60 60 2.20 38 18 78 120 12 <1 0.091 <0.1 <0.01 <0.005 0.2 78 <10 <10 710 <0.05 32S/13E-30F01 1/15/2013 440 65 64 2.40 40 19 95 130 12 <1 0.090 <0.1 <0.01 <0.005 0.11 95 <10 <10 720 0.05 32S/13E-30F01 10/30/2012 470 60 66 2.50 43 20 75 123 12 <1 0.087 <0.1 <0.01 <0.005 0.13 75 <10 <10 720 <0.05 32S/13E-30F01 7/24/2012 470 73 66 2.70 36 18 86 120 13 <1 <0.1 <0.1 <0.01 0.019 0.11 86 <10 <10 720 <0.05 32S/13E-30F01 4/19/2012 450 72 52 1.90 32 15 81 130 13 <1 <0.1 <0.2 <0.01 <0.005 <0.2 81 <10 <10 700 <0.1 32S/13E-30F01 1/10/2012 460 67 61 2.00 35 17 81 120 11 <1 <0.1 0.12 <0.01 <0.005 <0.1 81 <10 <10 720 <0.1 32S/13E-30F01 11/17/2011 470 70 82 2.40 40 19 78 120 12 <1 <0.1 <0.1 <0.01 <0.005 0.16 78 <10 <10 720 <0.1 32S/13E-30F01 7/25/2011 460 66 68 4.40 37 19 78 117.4 12.17 <1 0.100 0.101 <0.01 0.014 0.178 78 <5 <5 720 0.11 32S/13E-30F01 4/20/2011 460 71 69 2.60 36 14 87 124 12 <1 0.180 0.11 <0.01 <0.005 0.17 87 <2.0 <2.0 730 NA 32S/13E-30F01 1/24/2011 510 75 64 4.00 34 18 83 140 11 <1.0 0.170 0.11 <0.10 <0.005 <0.1 83 <2.0 <2.0 780 <0.1 32S/13E-30F01 10/21/2010 540 100 73 2.00 43 21 88 120 13 <1.0 0.067 <0.1 NA <0.005 <0.3 88 <10 <10 894 <.1 32S/13E-30F01 7/26/2010 464 74 82.2 2.16 47.9 25.1 88.0 120 12 < 0.50 0.098 < 0.10 < 0.10 0.0817 0.37 88.0 < 1.0 < 1.0 710 0.79 32S/13E-30F01 4/27/2010 534 72 77.1 2.59 45.8 23.6 100 140 9.8 0.56 0.129 < 0.10 < 0.10 0.112 0.29 100 < 1.0 < 1.0 780 1.02 32S/13E-30F01 1/28/2010 725 140 99.9 2.70 76.4 35.8 214 170 1.6 0.84 0.120 < 0.10 < 0.10 0.112 0.56 214 < 1.0 < 1.0 1,200 0.640 32S/13E-30F01 10/19/2009 522 74 85.6 2.35 52.8 26.3 102 150 13 0.70 0.136 0.13 < 0.10 0.123 0.32 102 < 1.0 < 1.0 770 1.30 32S/13E-30F01 8/19/2009 648 92 98.9 3.84 63.1 31.9 113 190 10 0.56 NA < 0.10 0.12 1.03 0.32 113 < 1.0 < 1.0 970 4.52 32S/13E-30F01 5/12/2009 792 110 108 2.89 80.2 39.9 136 280 NA NA NA < 0.10 NA 0.0353 0.39 136 < 1.0 < 1.0 1,200 0.281 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30F02 10/6/2021 550 53 46 2.3 77 31 180 130 14 0.15 0.11 0.093 0.1 0.052 0.66 180 4.1 4.1 838 0.05 32S/13E-30F02 7/16/2021 580 51 47 2.7 78 31 190 130 14 0.12 0.12 0.093 0.005 0.0073 0.62 190 4.1 4.1 834 0.03 32S/13E-30F02 4/7/2021 560 53 46 2.4 75 32 180 130 14 0.16 0.078 0.093 0.005 0.014 0.59 180 4.1 4.1 0.03 32S/13E-30F02 1/6/2021 550 52 44 2.6 73 31 180 130 14 0.45 0.088 0.085 0.005 0.0082 0.6 180 4.1 4.1 823 0.03 32S/13E-30F02 10/12/2020 540 52 45 2.4 76.0 30 180 130 14 0.19 0.08 0.085 0.000 0.01 0.62 180 0 0 836 0.0 32S/13E-30F02 7/7/2020 600 53 51 2.7 83.0 33 180 130 14 0.20 0.10 0.080 0.100 0.01 0.68 180 4 4 845 0.1 32S/13E-30F02 4/22/2020 580 52 47 2.6 78.0 31 180 130 14 0.18 0.09 0.086 0.000 0.02 0.66 180 0 0 857 0.0 32S/13E-30F02 1/14/2020 550 53 48 2.8 84.0 32 180 130 14 0.10 0.10 0.079 0.000 0.02 0.40 180 0 0 808 0.1 32S/13E-30F02 10/14/2019 550 51 50 2.7 83.0 32 180 130 14 0.00 0.10 0.077 0.000 0.15 0.63 180 0 0 841 0.1 32S/13E-30F02 7/9/2019 620 51 47 2.5 82.0 35 190 120 14 0.13 0.09 0.084 0.000 0.02 0.49 190 0 0 838 0.0 32S/13E-30F02 4/10/2019 570 53 43 2.7 78 32 180 130 14 0.085 0.093 0.090 ND 0.046 0.47 180 ND ND 852 0.05 32S/13E-30F02 1/8/2019 560 52 44 2.7 80 34 190 130 14 0.059 0.094 0.091 ND 0.013 0.62 190 ND ND 845 ND 32S/13E-30F02 10/10/2018 580 51 50 2.9 83 35 190 130 14 0.07 0.094 0.07 ND 0.020 0.42 190 ND ND 848 0.07 32S/13E-30F02 7/10/2018 580 53 48 2.7 83 36 190 130 14 0.23 0.095 0.11 ND 0.026 0.59 190 ND ND 893 0.045 32S/13E-30F02 4/12/2018 580 48 48 2.8 82 35 190 120 13 0.12 0.097 0.072 ND 0.022 0.48 190 ND ND 854 ND 32S/13E-30F02 1/11/2018 580 52 51 2.7 82 36 200 130 14 0.14 0.091 0.12 ND 0.032 0.68 200 ND ND 846 ND 32S/13E-30F02 10/11/2017 580 51 46 2.6 80 34 200 130 14 0.16 0.094 0.083 ND 0.037 0.65 200 ND ND 877 0.037 32S/13E-30F02 7/12/2017 570 52 49 2.9 89 39 200 130 13 ND 0.094 0.096 ND 0.15 0.66 200 ND ND 861 ND 32S/13E-30F02 4/12/2017 620 52 51 2.9 88 38 200 130 13 ND 0.088 0.063 ND 0.022 0.67 200 ND ND 856 0.041 32S/13E-30F02 1/10/2017 590 52 50 2.8 90 37 220 140 13 ND 0.09 0.08 ND 1.1 0.6 220 ND ND 884 0.15 32S/13E-30F02 10/11/2016 600 52 50 2.9 89 40 220 140 13 0.089 0.09 0.074 ND 0.025 0.6 220 ND ND 886 ND 32S/13E-30F02 7/20/2016 590 51 51 3.0 88 38 220 130 13 0.14 0.091 0.072 <0.010 0.170 0.57 220 <4.1 <4.1 880 0.033 32S/13E-30F02 4/13/2016 570 51 51 2.9 89 40 200 130 13 0.08 0.1 0.086 <0.010 0.014 0.60 200 <4.1 <4.1 876 <0.030 32S/13E-30F02 1/13/2016 610 53 51 2.9 89 38 210 140 13 0.14 0.091 0.15 <0.010 0.035 0.47 210 <4.1 <4.1 858 <0.030 32S/13E-30F02 10/14/2015 570 49 45 2.8 80 35 212 130 13 <1 0.085 <0.10 <0.01 0.20 0.39 212 <10 <10 890 0.078 32S/13E-30F02 7/15/2015 610 50 51 2.0 88 38 204 140 13 <1 0.091 <0.1 <0.01 0.048 0.30 204 <10 <10 890 <0.05 32S/13E-30F02 4/15/2015 570 51 43 2.7 78 34 200 140 13.5 <1 0.085 <0.1 <0.01 0.087 0.42 200 <10 <10 850 <0.05 32S/13E-30F02 1/14/2015 590 51 42 2.4 80 34 210 140 13 <1 0.08 <0.1 <0.01 0.014 0.324 210 <10 <10 860 <0.05 32S/13E-30F02 10/14/2014 600 46 42 2.6 76 32 310 120 12 <1 0.08 <0.1 <0.01 0.22 0.37 310 <10 <10 890 <0.05 32S/13E-30F02 7/30/2014 580 49 46 2.6 80 35 210 130 13 <1 <0.1 <0.1 <0.01 0.02 0.27 210 <10 <10 890 <0.05 32S/13E-30F02 4/16/2014 590 49 45 3.3 68 30 200 130 12 <1 0.089 <0.1 <0.01 0.011 0.44 200 <10 <10 890 <0.05 32S/13E-30F02 1/15/2014 580 50 45 2.7 76 31 190 136 13.1 13.4 <0.1 <0.1 <0.01 0.054 0.4 190 <10 <10 890 <0.05 32S/13E-30F02 10/15/2013 570 50 45 2.7 75 33 190 140 12 <1 0.69 0.19 <0.01 0.099 0.38 190 <10 <10 890 <0.05 32S/13E-30F02 7/10/2013 570 50 38 2.6 78 32 190 180 <0.05 <1 0.08 0.13 <0.01 0.14 <0.1 190 <10 <10 880 <0.05 32S/13E-30F02 4/11/2013 590 50 41 2.6 70 30 190 140 14 <1 0.09 0.1 <0.01 0.082 0.43 190 <10 <10 880 <0.05 32S/13E-30F02 1/15/2013 550 50 44 2.9 72 31 200 140 13 <1 0.09 0.1 <0.01 0.011 0.32 200 <10 <10 880 0.12 32S/13E-30F02 10/30/2012 610 48 45 3.0 79 34 188 135 13 <1 0.09 <0.1 <0.01 0.06 0.31 188 <10 <10 890 0.011 32S/13E-30F02 7/24/2012 590 56 46 3.2 69 30 194 140 14 <1 <0.1 0.11 <0.01 0.038 0.27 194 <10 <10 880 <0.05 32S/13E-30F02 4/19/2012 600 60 40 2.7 68 30 200 140 14 <1 <0.1 <0.2 <0.01 0.19 0.3 200 <10 <10 890 0.11 32S/13E-30F02 1/12/2012 610 52 45 3.0 73 32 200 130 12 <1 <0.1 0.25 <0.02 0.29 0.33 200 <10 <10 890 <0.1 32S/13E-30F02 11/21/2011 580 49 38 2.7 73 30 190 120 13 <1 0.07 <0.1 <0.01 0.022 0.34 190 <10 <10 870 <0.1 32S/13E-30F02 7/25/2011 590 52 46 5.1 73 31 190 134.3 13.19 <1 <0.1 0.127 <0.1 0.025 0.387 190 <5 <5 900 <0.1 32S/13E-30F02 4/20/2011 600 54 57 4.2 74 29 200 141 13 <1 0.18 0.17 <0.01 0.025 0.38 200 <2.0 <2.0 920 NA 32S/13E-30F02 1/24/2011 600 51 43 4.9 71 31 210 140 12 <1.0 0.15 0.12 0.27 0.041 0.3 210 <2.0 <2.0 920 <0.1 32S/13E-30F02 10/28/2010 610 49 38 2.3 70 30 210 130 11 <1.0 0.10 <0.1 NA 0.0094 <0.3 210 <10 <10 920 <0.1 32S/13E-30F02 7/26/2010 560 49 45.8 2.95 85.4 36.8 223 130 11 2.5 0.0928 < 0.10 0.13 0.0646 0.59 223 < 1.0 < 1.0 890 < 0.100 32S/13E-30F02 4/27/2010 634 51 50.3 3.12 87.9 38.6 225 130 10 0.8 0.112 < 0.10 < 0.10 0.615 0.51 225 < 1.0 < 1.0 880 3.28 32S/13E-30F02 1/28/2010 604 44 52.2 4.47 92.1 38.5 230 150 11 1.4 0.127 < 0.10 < 0.10 0.913 0.48 230 < 1.0 < 1.0 920 4.55 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30F02 10/19/2009 566 49 49.5 2.80 88.3 37.6 240 140 11 1.0 0.0942 0.17 < 0.10 0.924 0.51 240 < 1.0 < 1.0 850 2.15 32S/13E-30F02 8/19/2009 614 49 51.8 3.19 87.3 36.8 225 130 11 2.00 NA 0.10 < 0.10 2.24 0.54 225 < 1.0 < 1.0 920 19.4 32S/13E-30F02 5/12/2009 514 54 48.7 3.26 81.1 34.9 206 120 NA NA NA 0.11 NA 1.87 0.53 206 < 1.0 < 1.0 890 3.23 32S/13E-30F02 3/27/1996 678 49 52 3.8 98 42 305 166 11.069 NA 0.16 NA NA NA NA NA NA NA NA NA 32S/13E-30F02 6/9/1976 637 48 55 2.8 98 43 343 172 3.9758 NA 0.1 0.5 NA NA NA NA NA NA NA NA 32S/13E-30F02 1/20/1966 580 68 47 2 94 38 280 152 27 NA 0.08 0.2 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30F03 10/6/2021 640 50 42 2.3 110 46 300 170 0.1 0.15 0.078 0.14 0.052 0.018 0.25 300 4.1 4.1 982 0.05 32S/13E-30F03 7/16/2021 660 48 39 2.4 99 43 310 170 0.024 0.15 0.083 0.13 0.038 0.019 0.23 310 4.1 4.1 975 0.03 32S/13E-30F03 4/7/2021 650 49 40 2.4 100 43 310 170 0.024 0.097 0.05 0.15 0.029 0.019 0.24 310 4.1 4.1 0.033 32S/13E-30F03 1/6/2021 660 50 43 2.7 110 46 310 170 0.024 0.32 0.064 0.15 0.037 0.025 0.27 310 4.1 4.1 971 0.05 32S/13E-30F03 10/12/2020 710 49 41 2.5 110.0 43 310 170 0 0.00 0.06 0.140 0.037 0.02 0.21 310 0 0 975 0.0 32S/13E-30F03 7/7/2020 720 50 42 2.6 110.0 45 290 170 0 0.10 0.06 0.120 0.038 0.02 0.22 290 4 4 985 0.1 32S/13E-30F03 4/22/2020 620 49 41 2.6 110.0 44 310 170 0 0.10 0.06 0.140 0.042 0.02 0.23 310 0 0 999 0.1 32S/13E-30F03 1/14/2020 600 49 41 2.6 110.0 44 300 170 0 0.08 0.06 0.120 0.044 0.02 0.16 300 0 0 940 0.1 32S/13E-30F03 10/14/2019 620 47 44 2.7 110.0 44 300 170 0 0.00 0.06 0.120 0.035 0.02 0.16 300 0 0 980 0.1 32S/13E-30F03 7/9/2019 650 47 41 2.5 110.0 49 310 170 0 0.09 0.06 0.140 0.039 0.02 0.21 310 0 0 975 0.0 32S/13E-30F03 4/10/2019 630 49 37 2.5 100 45 310 170 ND 0.140 0.060 0.14 0.030 0.020 0.19 310 ND ND 988 0.05 32S/13E-30F03 1/8/2019 660 48 39 2.6 110 46 310 170 ND 0.068 0.063 0.15 0.037 0.020 0.22 310 ND ND 990 0.08 32S/13E-30F03 10/10/2018 650 48 44 2.9 120 51 310 170 ND 0.12 0.067 0.10 0.036 0.022 0.16 310 ND ND 981 0.05 32S/13E-30F03 7/10/2018 630 49 42 2.6 110 49 310 170 ND ND 0.062 0.18 0.035 0.019 0.22 310 ND ND 1,030 ND 32S/13E-30F03 4/12/2018 640 45 43 2.6 110 46 300 160 ND 0.15 0.066 0.14 0.036 0.021 0.16 300 ND ND 980 0.035 32S/13E-30F03 1/11/2018 650 48 45 2.8 120 51 310 170 ND 0.13 0.044 0.15 0.041 0.021 0.26 310 ND ND 966 0.037 32S/13E-30F03 10/11/2017 660 47 42 2.6 110 50 320 170 ND 0.13 0.067 0.13 0.037 0.021 0.2 320 ND ND 996 0.056 32S/13E-30F03 7/12/2017 750 46 44 3 120 53 280 170 ND ND 0.064 0.14 0.035 0.023 0.2 280 ND ND 980 0.046 32S/13E-30F03 4/12/2017 640 48 45 2.9 120 51 310 170 ND ND 0.076 0.16 0.035 0.022 0.22 310 ND ND 972 0.065 32S/13E-30F03 1/10/2017 670 49 44 2.7 120 51 330 170 ND ND 0.064 0.13 0.045 0.023 0.31 330 ND ND 993 0.14 32S/13E-30F03 10/11/2016 680 48 41 2.6 110 49 320 170 ND 0.11 0.056 0.13 0.042 0.02 0.22 320 ND ND 992 ND 32S/13E-30F03 7/20/2016 660 47 44 2.9 110 51 320 170 <0.022 <0.080 0.062 0.12 0.032 0.023 0.20 320 <4.1 <4.1 992 0.04 32S/13E-30F03 4/13/2016 650 47 42 2.7 110 51 310 170 <0.022 0.2 0.072 0.13 0.028 0.021 0.22 310 <4.1 <4.1 981 0.03 32S/13E-30F03 1/14/2016 580 49 45 2.8 120 52 310 180 0.05 0.1 0.061 0.2 <0.010 0.025 0.21 310 <4.1 <4.1 947 0.054 32S/13E-30F03 10/14/2015 660 44 38 2.8 100 44 306 160 <0.05 <1 <0.05 0.13 0.028 0.021 0.10 306 <10 <10 990 <0.05 32S/13E-30F03 7/15/2015 670 45 45 1.9 120 51 305 170 <0.05 <1 0.060 0.11 0.03 0.019 <0.1 305 <10 <10 990 <0.05 32S/13E-30F03 4/15/2015 650 46 35 2.3 99 44 300 170 <0.05 <1 0.056 0.126 0.02 0.015 0.1 300 <10 <10 950 <0.05 32S/13E-30F03 1/14/2015 670 46 36 2.2 100 45 310 180 <0.05 <1 0.05 0.121 0.02 0.016 <0.1 310 <10 <10 950 0.01 32S/13E-30F03 10/14/2014 660 41 35 3.0 99 42 310 150 <0.05 <1 <0.05 <0.1 0.011 0.017 <0.1 310 <10 <10 990 <0.05 32S/13E-30F03 7/30/2014 660 44 38 2.6 96 46 300 160 <0.05 <1 0.28 0.12 0.02 0.015 <0.1 300 <10 <10 990 <0.05 32S/13E-30F03 4/16/2014 640 44 36 3.3 55 38 310 169 <0.05 <1 0.062 0.12 0.02 0.011 0.11 310 <10 <10 990 <0.05 32S/13E-30F03 1/15/2014 650 45 35 2.5 90 41 300 173 <0.05 <1 <0.05 0.13 0.01 0.015 0.12 300 <10 <10 990 <0.05 32S/13E-30F03 10/15/2013 670 41 40 2.7 100 44 280 179 <0.05 <1 <0.05 0.14 0.02 0.016 <0.1 280 <10 <10 990 <0.05 32S/13E-30F03 7/10/2013 650 50 33 2.4 100 43 290 140 13.5 <1 0.055 <0.1 0.02 0.017 0.23 290 <10 <10 990 <0.05 32S/13E-30F03 4/11/2013 670 45 36 2.7 94 42 300 170 <0.05 <1 0.06 0.13 0.02 0.016 0.12 300 <10 <10 990 <0.05 32S/13E-30F03 1/15/2013 630 45 36 2.3 92 41 295 180 <0.05 <1 0.06 0.11 <0.01 0.015 <0.1 295 <10 <10 980 <0.05 32S/13E-30F03 10/30/2012 650 43 40 3.1 100 46 280 170 <0.05 <1 0.06 <0.1 0.03 0.016 <0.1 280 <10 <10 990 0.02 32S/13E-30F03 7/24/2012 640 51 36 2.7 81 37 296 180 <0.05 <1 <0.1 0.17 <0.01 0.016 0.2 296 <10 <10 990 <0.05 32S/13E-30F03 4/19/2012 640 54 32 2.3 84 36 290 180 <0.1 <1 <0.1 <0.2 0.01 0.014 <0.2 290 <10 <10 990 <0.1 32S/13E-30F03 1/12/2012 660 46 39 2.1 94 42 280 160 <0.1 <1 <0.1 0.2 0.025 0.016 <0.2 280 <10 <10 990 <0.1 32S/13E-30F03 11/21/2011 650 43 33 2.6 93 39 290 160 <0.05 <1 0.04 0.15 0.028 0.016 <0.1 290 <10 <10 960 <0.1 32S/13E-30F03 7/25/2011 650 47 46 5.1 73 31 190 170.5 <0.05 <1 <0.1 0.155 0.02 0.025 <0.1 190 <5 <5 900 <0.1 32S/13E-30F03 4/21/2011 650 48 40 3.8 91 34 280 179 <0.05 <1 0.1 0.2 0.029 0.015 0.11 280 <2.0 <2.0 1,000 NA 32S/13E-30F03 1/24/2011 650 46 36 4.7 87 38 300 170 <0.05 <1.0 0.11 0.17 0.24 0.016 <0.1 300 <2.0 <2.0 990 <0.1 32S/13E-30F03 10/28/2010 650 46 37 2.7 100 43 280 160 <0.1 <1.0 0.10 <0.1 NA 0.032 <0.3 280 <10 <10 1,000 0.53 32S/13E-30F03 7/26/2010 608 45 43.8 2.94 107 46.8 294 160 1.3 0.84 0.0479 < 0.10 0.10 0.129 0.24 294 < 1.0 < 1.0 900 7.55 32S/13E-30F03 4/27/2010 668 48 40.8 2.91 101 44.7 304 160 0.21 0.84 0.0733 0.14 0.11 0.0694 0.23 304 < 1.0 < 1.0 940 2.62 32S/13E-30F03 1/28/2010 656 40 43.1 3.91 112 47.2 310 180 < 0.20 2.8 0.0833 0.13 < 0.10 0.287 0.21 310 < 1.0 < 1.0 980 4.80 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30F03 10/19/2009 626 48 43.3 3.14 108 46.2 308 170 < 0.10 1.8 0.0646 0.22 < 0.10 0.255 0.17 308 < 1.0 < 1.0 910 2.09 32S/13E-30F03 8/19/2009 672 45 43.1 3.15 111 44.3 290 170 < 0.10 2.5 NA 0.14 < 0.10 0.468 0.19 290 < 1.0 < 1.0 980 18.5 32S/13E-30F03 5/12/2009 678 49 44.8 3.32 109 42.9 276 180 NA NA NA 0.17 NA 0.146 0.18 276 < 1.0 < 1.0 960 1.16 32S/13E-30F03 3/27/1996 686 41 40 3.4 109 48 379 197 0.0452 NA 0.13 NA NA NA NA NA NA NA NA NA 32S/13E-30F03 6/7/1976 616 43 41 2.6 96 49 333 190 0.0904 NA 0.05 0.5 NA NA NA NA NA NA NA NA 32S/13E-30F03 1/19/1966 642 69 49 4 109 40 321 182 1 NA 0.05 0.3 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30N01 10/6/2021 720 120 94 24 64 48 240 200 0.1 0.43 0.2 0.37 0.026 0.082 1.6 240 8.2 8.2 1,160 1.5 32S/13E-30N01 4/7/2021 810 120 89 25 66 53 310 160 0.024 0.63 0.21 0.35 0.015 0.09900001 1.2 310 8.2 8.2 2.2 32S/13E-30N01 10/12/2020 870 120 97 28.0 82.0 60 330 160 0 0.68 0.21 0.370 0.020 0.11 1.20 330 0 0 1,260 2.7 32S/13E-30N01 4/21/2020 810 130 110 31.0 84.0 60 390 130 0 0.68 0.22 0.330 0.017 0.12 0.98 390 0 0 1,340 3.0 32S/13E-30N01 10/15/2019 830 150 110 32.0 86.0 57 330 170 0 0.66 0.22 0.320 0.018 0.12 1.30 330 0 0 1,340 2.6 32S/13E-30N01 4/9/2019 860 160 94 30 81 59 310 180 ND 0.64 0.23 0.36 0.012 0.11 1.2 310 ND ND 1,370 2.8 32S/13E-30N01 10/10/2018 920 200 130 36 96 73 370 140 ND 0.62 0.21 0.36 0.017 0.14 0.85 370 ND ND 1,500 3.0 32S/13E-30N01 4/11/2018 800 140 110 31 73 55 290 150 ND 0.73 0.2 0.36 0.017 0.1 1.1 290 ND ND 1,280 2.4 32S/13E-30N01 10/11/2017 870 150 120 31 78 57 320 170 ND 0.68 0.24 0.38 0.019 0.12 1.5 320 ND ND 1350 3 32S/13E-30N01 4/11/2017 960 260 160 35 92 73 350 150 ND 0.84 0.23 0.42 0.015 0.14 1.5 350 ND ND 1,690 3.9 32S/13E-30N01 10/12/2016 900 180 130 32 77 61 290 180 ND 0.53 0.19 0.34 0.021 0.11 1.7 290 ND ND 1420 2.7 32S/13E-30N01 4/12/2016 790 110 110 27 55 46 230 190 0.05 0.5 0.18 0.42 0.013 0.1 1.7 230 <8.2 <8.2 1,190 1.7 32S/13E-30N01 10/15/2015 740 120 100 27 52 41 250 190 <0.05 <1 0.18 0.43 0.032 0.072 1.3 250 <10 <10 1,220 1.8 32S/13E-30N01 4/14/2015 930 190 130 28 69 54 360 170 <0.05 1.4 0.23 0.334 0.01 0.087 1.2 360 <10 <10 1,500 2.5 32S/13E-30N01 1/14/2015 845 170 110 29.0 71 54 320 180 <0.05 <1 0.21 0.332 0.01 0.087 1.2 320 <10 <10 1,360 2.3 32S/13E-30N01 10/15/2014 790 140 110 30.0 62 53 300 160 0.68 <1 0.21 0.29 <0.01 0.084 1.2 300 <10 <10 1,350 2.5 32S/13E-30N01 7/30/2014 800 150 110 27.0 61 52 310 160 <0.05 <1 0.81 0.33 0.01 0.081 1.1 310 <10 <10 1,360 2.4 32S/13E-30N01 4/16/2014 850 160 112 26.0 55 43 310 170 <0.05 <1 0.20 0.33 0.01 0.077 1.3 310 <10 <10 1,410 2.4 32S/13E-30N01 1/15/2014 790 154 110 26.0 56 45 260 190 <0.05 <1 0.19 0.41 <0.01 0.077 1.4 260 <10 <10 1,340 2.5 32S/13E-30N01 10/15/2013 950 200 140 32.0 74 60 330 180 <0.05 <1 0.21 0.33 0.01 0.095 1.3 330 <10 <10 1,570 2.8 32S/13E-30N01 7/10/2013 830 175 120 29.0 71 54 310 185 <0.05 <1 0.22 0.32 0.01 0.087 0.84 310 <10 <10 1,430 2.3 32S/13E-30N01 4/10/2013 860 180 120 29.0 67 54 320 180 <0.05 1.1 0.21 0.31 0.01 0.087 1.2 320 <10 <10 1,470 2.5 32S/13E-30N01 1/14/2013 800 170 120 32.0 66 53 280 200 <0.05 1.1 0.22 0.26 <0.01 0.09 1.2 280 <10 <10 1,380 2.5 32S/13E-30N01 10/29/2012 900 180 120 34.0 77 60 300 190 <0.05 <1 0.21 0.40 0.011 0.098 1.2 300 <10 <10 1,500 2.8 32S/13E-30N01 7/23/2012 840 190 120 31.0 56 45 266 200 <0.05 <1 0.22 0.43 <0.01 0.096 1.2 266 <10 <10 1,370 2.3 32S/13E-30N01 4/18/2012 1,050 280 140 31.0 59 47 330 210 <0.1 1.4 0.2 0.50 <0.01 0.078 1.3 330 <10 <10 1,680 2.4 32S/13E-30N01 1/9/2012 1,050 260 170 34.0 68 52 307 200 <0.05 2.7 0.21 0.41 <0.01 0.088 1.9 307 <10 <10 1,760 2.9 32S/13E-30N01 11/17/2011 1,300 360 320 40 90 69 390 220 <0.1 <1 0.23 0.38 0.017 0.11 2.5 390 <10 <10 2,210 3.4 32S/13E-30N01 7/25/2011 1,680 445 230 42 99 81 380 255.5 <0.05 1.2 0.21 <0.1 <0.01 0.12 3.016 380 <5 <5 2,480 4.2 32S/13E-30N01 4/20/2011 890 210 130 26 68 46 180 215 <0.05 <1 0.24 0.39 0.013 0.086 4.57 180 <2.0 <2.0 1,550 NA 32S/13E-30N01 1/24/2011 870 180 100 28 84 46 240 210 <0.05 <1.0 <0.1 0.34 0.12 0.24 3.63 240 <2.0 <2.0 1,430 18 32S/13E-30N01 10/21/2010 890 190 120 26 58 45 246 200 <0.1 <1.0 <0.1 0.37 NA 0.078 2.3 246 <10 <10 1,498 <0.1 32S/13E-30N01 7/27/2010 917 200 130 30.0 75.0 56.2 241 220 < 0.10 < 0.50 0.165 0.29 0.23 0.101 2.8 241 < 1.0 < 1.0 1,400 2.61 32S/13E-30N01 4/27/2010 808 150 130 29 136 55.6 286 210 0.76 1.7 0.171 0.37 0.19 0.276 2.6 286 < 1.0 < 1.0 1,300 20.4 32S/13E-30N01 1/26/2010 902 210 155 33.5 156 66.4 307 230 < 0.10 1.7 0.317 0.30 0.12 0.333 3.2 307 < 1.0 < 1.0 1,500 27.3 32S/13E-30N01 10/20/2009 828 200 159 34.3 118 59.8 238 230 < 0.10 1.3 0.241 0.38 < 0.10 0.157 3.2 238 < 1.0 < 1.0 1,300 5.33 32S/13E-30N01 8/20/2009 835 160 150 27.8 121 49.4 235 220 < 0.10 1.3 NA 0.37 0.12 0.228 2.9 235 < 1.0 < 1.0 1,400 15.9 32S/13E-30N01 5/11/2009 960 180 175 33.5 86.7 46.2 274 220 NA NA NA 0.36 NA 0.113 3.2 274 < 1.0 < 1.0 1,500 2.26 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30N02 10/6/2021 930 51 70 3.9 140 58 190 490 0.18 0.2 0.16 0.12 0.011 0.01 0.14 190 8.2 8.2 1,340 0.05 32S/13E-30N02 7/15/2021 1,100 45 65 4.1 140 54 190 500 0.19 0.24 0.11 0.12 0.005 0.004 0.14 190 8.2 8.2 1,350 0.03 32S/13E-30N02 4/7/2021 1,000 43 70 4.4 140 57 200 490 0.19 0.13 0.14 0.13 0.005 0.004 0.14 200 8.2 8.2 0.03 32S/13E-30N02 1/7/2021 980 47 76 4.7 150 62 190 490 0.23 0.35 0.15 0.12 0.005 0.004 0.14 190 8.2 8.2 1,320 0.03 32S/13E-30N02 10/12/2020 1,100 50 73 4.7 150.0 61 190 510 0 0.00 0.15 0.110 0.000 0.00 0.13 190 0 0 1,350 0.0 32S/13E-30N02 7/7/2020 1,100 50 77 4.7 160.0 62 190 510 0 0.20 0.16 0.096 0.100 0.01 0.16 190 8 8 1,350 0.1 32S/13E-30N02 4/21/2020 1,000 49 71 4.5 150.0 56 190 500 0 0.22 0.15 0.120 0.000 0.00 0.13 190 0 0 1,370 0.1 32S/13E-30N02 1/15/2020 1,100 49 77 4.9 160.0 61 190 980 0 0.15 0.15 0.077 0.000 0.00 0.13 190 0 0 1,300 0.1 32S/13E-30N02 10/15/2019 1,000 49 77 4.8 160.0 58 190 510 0 0.10 0.16 0.088 0.000 0.00 0.17 190 0 0 1,350 0.2 32S/13E-30N02 7/9/2019 940 48 73 4.6 150.0 64 190 470 0 0.45 0.15 0.096 0.000 0.00 0.12 190 0 0 1,340 0.0 32S/13E-30N02 4/9/2019 1,000 50 64 4.6 140 56 190 480 0.2 0.14 0.15 0.12 ND ND 0.14 190 ND ND 1,350 0.04 32S/13E-30N02 1/9/2019 960 50 67 4.6 150 59 190 490 0.2 0.19 0.15 0.12 ND ND 0.16 190 ND ND 1,360 ND 32S/13E-30N02 10/10/2018 940 50 75 4.9 150 64 190 500 0.18 0.16 0.16 0.069 ND ND 0.09 190 ND ND 1,340 0.22 32S/13E-30N02 7/12/2018 1,000 47 66 4.5 140 59 190 480 0.19 0.19 0.14 0.099 ND ND 0.12 190 ND ND 1,390 0.17 32S/13E-30N02 4/11/2018 1,100 46 76 4.9 160 65 190 480 0.17 0.15 0.16 0.097 ND 0.007 0.14 190 ND ND 1,350 0.41 32S/13E-30N02 1/11/2018 980 49 77 4.6 150 63 190 510 0.19 0.10 0.15 0.13 ND ND 0.16 190 ND ND 1,330 0.2 32S/13E-30N02 10/11/2017 1,000 46 70 4.8 160 65 200 510 0.19 0.19 0.17 0.11 ND 0.005 0.27 200 ND ND 1340 0.28 32S/13E-30N02 7/11/2017 1,100 49 74 4.8 150 64 190 480 0.2 0.13 0.15 0.08 ND 0.023 0.16 190 ND ND 1,360 2.0 32S/13E-30N02 4/11/2017 980 50 74 4.8 160 64 190 510 0.2 0.12 0.14 0.14 ND ND 0.18 190 ND ND 1,320 0.2 32S/13E-30N02 1/13/2017 980 49 80 5.1 170 69 200 490 0.19 0.12 0.16 0.078 ND 0.011 0.16 200 ND ND 1,340 0.63 32S/13E-30N02 10/12/2016 1,000 50 77 5 160 69 200 500 0.18 ND 0.15 0.11 ND ND 0.27 200 ND ND 1370 ND 32S/13E-30N02 7/19/2016 1,000 48 78 5 160 68 200 500 0.2191 0.17 0.15 0.11 <0.010 <0.0040 0.2 200 <8.2 <8.2 1,350 <0.030 32S/13E-30N02 4/12/2016 1,000 44 72 4.8 150 67 190 470 0.2 <0.080 0.14 0.096 <0.010 <0.0040 0.21 190 <8.2 <8.2 1,390 <0.030 32S/13E-30N02 1/13/2016 990 48 74 4.9 150 64 190 520 0.27 0.12 0.14 0.22 <0.010 <0.0040 <0.046 190 <8.2 <8.2 1,300 0.041 32S/13E-30N02 10/15/2015 1,040 47 64 4.6 140 60 192 480 0.72 <1 0.13 0.18 <0.01 <0.005 <0.10 192 <10 <10 1,350 <0.05 32S/13E-30N02 7/16/2015 1,030 49 82 4.4 170 70 190 480 1.4 1.52 0.15 <0.1 <0.01 <0.005 0.11 190 <10 <10 1,360 <0.05 32S/13E-30N02 4/14/2015 840 47 61 4.3 130 58 190 500 0.576 <1 0.14 <0.3 <0.01 <0.005 <0.3 190 <10 <10 1,330 <0.05 32S/13E-30N02 1/14/2015 1,050 50 62 4.2 140 59 190 520 0.40 <1 0.13 0.115 <0.01 <0.005 <0.1 190 <10 <10 1,320 <0.05 32S/13E-30N02 10/15/2014 1,040 44 65 5.0 140 58 200 440 0.77 <1 0.13 <0.1 <0.01 <0.005 <0.1 200 <10 <10 1,370 <0.05 32S/13E-30N02 7/30/2014 1,020 45 66 4.6 140 60 220 470 0.51 <1 0.10 0.13 <0.01 <0.005 <0.4 220 <10 <10 1,340 <0.05 32S/13E-30N02 4/16/2014 1,040 46 66 5.0 120 50 190 520 0.47 <1 0.14 0.1 <0.01 <0.005 <0.1 190 <10 <10 1,350 <0.05 32S/13E-30N02 1/15/2014 1,060 45 60 4.1 120 49 190 477 0.65 1.1 0.13 0.43 <0.01 <0.005 <0.2 190 <10 <10 1,370 <0.05 32S/13E-30N02 10/15/2013 1,030 46 70 4.9 140 58 190 541 0.46 <1 0.12 0.18 <0.01 <0.005 <0.2 190 <10 <10 1,360 <0.05 32S/13E-30N02 7/10/2013 1,020 50 61 4.5 140 59 185 500 0.63 <1 0.14 0.12 <0.01 <0.005 <0.1 185 <10 <10 1,370 <0.05 32S/13E-30N02 4/10/2013 1,080 48 60 4.3 120 52 185 500 0.50 <1 0.15 <0.2 <0.01 <0.005 <0.2 185 <10 <10 1,360 <0.05 32S/13E-30N02 1/14/2013 1,010 48 63 4.5 120 53 188 530 0.40 <1 0.14 <0.2 <0.01 <0.005 <0.2 188 <10 <10 1,350 0.07 32S/13E-30N02 10/29/2012 1,030 40 68 5.0 140 58 180 500 <0.25 <1 0.14 <0.5 <0.01 <0.005 <0.5 180 <10 <10 1,360 <0.05 32S/13E-30N02 7/23/2012 1,040 54 63 4.5 110 48 188 510 0.13 <1 0.15 0.15 <0.01 0.01 <0.1 188 <10 <10 1,360 <0.05 32S/13E-30N02 4/18/2012 990 60 56 4.2 110 47 190 560 0.14 <1 0.12 0.21 <0.01 <0.005 0.28 190 <10 <10 1,360 <0.1 32S/13E-30N02 1/11/2012 1,040 49 64 4.9 130 54 180 460 1.30 <1 0.17 0.16 <0.02 <0.005 <0.2 180 <10 <10 1,360 <0.1 32S/13E-30N02 11/21/2011 1,020 46 57 4.5 130 54 180 450 0.15 <1 0.15 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,360 <0.1 32S/13E-30N02 7/25/2011 1,050 50 81 7.7 150 62 180 479.1 0.15 <1 0.16 0.144 <0.01 0.006 <0.1 180 <5 <5 1,370 0.49 32S/13E-30N02 4/20/2011 1,030 52 63 5.4 130 44 180 508 0.17 <1 0.19 0.2 <0.01 <0.005 <0.1 180 <2.0 <2.0 1,380 NA 32S/13E-30N02 1/24/2011 1,050 50 60 6.4 120 49 190 490 0.24 <1.0 0.17 0.17 <0.10 0.064 <0.1 190 <2.0 <2.0 1,380 0.12 32S/13E-30N02 10/21/2010 1,040 48 52 3.5 100 45 181 460 0.15 <1.0 <0.1 <0.1 NA <0.005 <0.3 181 <10 <10 1,377 <0.1 32S/13E-30N02 7/27/2010 777 57 67.6 7.31 141 58.5 190 470 0.3 3.5 0.138 < 0.10 0.11 0.102 0.28 190 < 1.0 < 1.0 1,300 3.43 32S/13E-30N02 4/27/2010 800 93 71.9 12.50 108 46.3 159 300 7.0 3.2 0.123 0.13 0.11 0.0776 0.7 159 < 1.0 < 1.0 1,100 3.27 32S/13E-30N02 2/25/2010 1,000 48 71.4 4.70 141 58.1 195 490 0.16 < 0.50 0.15 0.15 < 0.10 0.0393 0.16 195 < 1.0 < 1.0 1,300 3.30 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30N02 2/25/2010 1,010 74 76.9 10.2 138 55.8 195 440 0.13 2.4 0.142 0.16 < 0.10 0.0579 0.24 195 < 1.0 < 1.0 1,400 1.69 32S/13E-30N02 1/26/2010 970 50 74.2 4.77 152 62.2 195 510 0.14 < 0.50 0.129 0.11 < 0.10 < 0.00500 0.16 195 < 1.0 < 1.0 1,300 < 0.100 32S/13E-30N02 10/20/2009 2,080 690 274 151 239 101.0 220 400 < 0.10 7.0 0.201 0.16 0.87 0.398 2.0 220 < 1.0 < 1.0 2,800 5.50 32S/13E-30N02 8/20/2009 1,350 500 199 82.2 123 49.0 199 220 6.4 6.3 NA 0.23 0.14 0.339 2.8 199 < 1.0 < 1.0 2,100 4.91 32S/13E-30N02 5/11/2009 1,290 170 129 52 137 66.9 176 470 NA NA NA 0.18 NA 0.128 0.56 176 < 1.0 < 1.0 1,800 5.24 32S/13E-30N02 3/27/1996 1,050 50 71 5.5 145 60 243 516 0.2033 NA 0.23 NA NA NA NA NA NA NA NA NA 32S/13E-30N02 6/7/1976 1,093 48 62 4.7 150 60 248 484 0 NA 0.13 0.7 NA NA NA NA NA NA NA NA 32S/13E-30N02 1/21/1966 1,069 54 71 5 148 63 232 483 0 NA 0.12 0.5 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30N03 10/6/2021 560 66 54 2.7 65 28 140 130 16 0.2 0.096 0.2 0.1 0.0079 0.7 140 4.1 4.1 818 0.05 32S/13E-30N03 7/15/2021 590 64 54 2.9 66 28 130 130 15 0.15 0.037 0.2 0.005 0.004 0.63 130 4.1 4.1 820 0.03 32S/13E-30N03 4/7/2021 510 66 56 3 65 30 140 130 15 0.12 0.078 0.18 0.005 0.004 0.76 140 4.1 4.1 0.03 32S/13E-30N03 1/7/2021 580 60 56 2.9 68 30 140 120 16 1.1 0.078 0.15 0.005 0.004 0.49 140 4.1 4.1 821 0.03 32S/13E-30N03 10/12/2020 600 66 58 3.2 74.0 32 140 140 16 0.13 0.09 0.180 0.000 0.00 0.75 140 0 0 848 0.0 32S/13E-30N03 7/7/2020 590 73 62 3.3 75.0 32 140 140 17 0.16 0.10 0.160 0.100 0.00 0.86 140 4 4 872 0.1 32S/13E-30N03 4/21/2020 590 69 57 3.2 71.0 30 140 140 16 0.17 0.08 0.220 0.000 0.09 0.77 140 0 0 882 0.1 32S/13E-30N03 1/15/2020 630 68 60 3.3 78.0 32 140 140 17 0.00 0.09 0.150 0.000 0.01 0.65 140 0 0 834 0.2 32S/13E-30N03 10/15/2019 560 67 60 3.2 76.0 31 150 140 17 0.14 0.09 0.170 0.000 0.11 0.86 150 0 0 875 0.2 32S/13E-30N03 7/9/2019 640 67 55 3.0 72.0 33 140 130 16 0.14 0.08 0.180 0.000 0.00 0.77 140 0 0 860 0.0 32S/13E-30N03 4/9/2019 580 71 51 3.1 68 30 150 130 16 0.18 0.09 0.2 ND 0.03 0.60 150 ND ND 867 ND 32S/13E-30N03 1/9/2019 560 69 54 3.2 72 31 150 130 16 0.084 0.087 0.2 ND ND 0.71 150 ND ND 858 ND 32S/13E-30N03 10/10/2018 540 68 59 3.4 71 32 150 130 16 ND 0.091 0.21 ND 0.012 0.53 150 ND ND 847 0.030 32S/13E-30N03 7/12/2018 550 62 54 3.2 69 31 150 120 15 0.16 0.084 0.17 ND 0.063 0.61 150 ND ND 866 0.076 32S/13E-30N03 4/11/2018 590 62 58 3.3 72 33 150 120 14 0.19 0.094 0.16 ND 0.006 0.51 150 ND ND 839 ND 32S/13E-30N03 1/11/2018 580 64 61 3.3 74 34 150 140 14 0.20 0.088 0.19 ND 0.33 0.61 150 ND ND 836 0.12 32S/13E-30N03 10/11/2017 580 63 54 3.2 73 33 150 130 15 0.24 0.1 0.16 ND 0.86 0.64 150 ND ND 836 0.59 32S/13E-30N03 7/11/2017 560 64 60 3.2 77 34 150 140 14 0.1 0.089 0.14 ND 0.54 0.66 150 ND ND 871 0.18 32S/13E-30N03 4/11/2017 560 69 62 3.6 82 36 160 140 14 0.12 0.08 0.15 ND 0.62 0.69 160 ND ND 866 0.43 32S/13E-30N03 1/12/2017 580 69 62 3.6 83 38 170 150 14 0.13 0.088 0.13 ND 3.3 0.74 170 ND ND 878 1.5 32S/13E-30N03 10/12/2016 580 68 62 3.5 80 37 170 140 15 ND 0.088 0.16 ND 0.56 0.76 170 ND ND 879 0.17 32S/13E-30N03 7/19/2016 580 66 61 3.6 75 36 160 130 14.683 0.20 0.084 0.16 <0.010 0.030 0.76 160 <4.1 <4.1 864 <0.030 32S/13E-30N03 4/12/2016 610 69 60 3.4 75 36 160 130 14.457 0.16 0.078 0.18 <0.010 0.0095 0.78 160 <4.1 <4.1 895 <0.05 32S/13E-30N03 1/13/2016 570 72 62 3.4 77 35 160 140 15 0.15 0.083 0.22 <0.010 0.0089 0.66 160 <4.1 <4.1 867 0.079 32S/13E-30N03 10/15/2015 570 63 54 3.3 69 32 162 130 15 <1 0.0161 0.23 <0.01 0.015 0.56 162 <10 <10 860 <0.05 32S/13E-30N03 7/16/2015 580 65 65 3.0 81 35 160 140 15 15.3 0.079 0.14 0.45 0.011 0.46 160 <10 <10 880 <0.05 32S/13E-30N03 4/14/2015 580 65 49 2.9 65 31 160 140 15.2 <1 0.078 <0.1 <0.01 <0.005 0.47 160 <10 <10 860 <0.05 32S/13E-30N03 1/14/2015 610 68 53 3.0 73 34 170 150 15 <1 0.074 0.151 <0.01 0.0540 0.43 170 <10 <10 870 0.49 32S/13E-30N03 10/15/2014 560 59 52 3.5 67 32 160 130 14 0.54 0.066 0.14 <0.01 <0.005 0.452 160 <10 <10 890 <0.05 32S/13E-30N03 7/30/2014 580 65 55 3.2 69 32 170 130 15 <1 <0.1 0.16 <0.01 <0.005 0.34 170 <10 <10 910 <0.05 32S/13E-30N03 4/16/2014 610 63 55 4.3 65 29 170 140 13.00 <1 0.08 0.15 <0.01 0.058 0.38 170 <10 <10 910 <0.05 32S/13E-30N03 1/15/2014 610 66 54 3.2 67 31 170 149 14.8 15 <0.1 0.16 <0.01 0.065 0.46 170 <10 <10 910 0.27 32S/13E-30N03 10/15/2013 580 60 57 3.3 71 32 170 150 14 <1 0.057 0.16 <0.01 0.370 0.41 170 <10 <10 910 0.1 32S/13E-30N03 7/10/2013 590 60 48 3.1 71 31 160 150 15.1 <1 0.074 0.18 <0.01 1.3 0.17 160 <10 <10 900 0.43 32S/13E-30N03 4/10/2013 600 66 53 3.3 69 31 160 150 15 <1 0.11 0.2 <0.01 0.064 0.35 160 <10 <10 910 <0.05 32S/13E-30N03 1/14/2013 570 66 55 3.4 68 30 165 150 15 <1 0.093 0.2 <0.01 0.028 0.27 165 <10 <10 900 0.084 32S/13E-30N03 10/29/2012 610 60 56 3.7 74 33 155 148 14 <1 0.081 0.2 <0.01 0.027 0.3 155 <10 <10 900 0.04 32S/13E-30N03 7/23/2012 600 71 56 3.5 61 28 152 200 <0.05 <1 0.1 <0.1 <.002 0.120 0.3 152 <10 <10 890 0.44 32S/13E-30N03 4/18/2012 570 80 47 3.0 57 25 150 150 16 <1 0.1 0.3 <0.01 <0.005 0.28 150 <10 <10 880 <0.1 32S/13E-30N03 1/11/2012 570 67 55 3.9 68 30 140 130 14 <1 0.1 0.2 <0.02 0.0510 0.39 140 <10 <10 870 0.17 32S/13E-30N03 11/21/2011 600 67 47 3.2 64 28 140 130 15 1.2 0.088 0.2 <0.01 <0.005 0.62 140 <10 <10 850 <0.1 32S/13E-30N03 7/25/2011 590 67 47 5.0 54 24 290 139.8 15 <1 <0.1 0.2 <0.01 0.0520 0.79 290 <5 <5 890 0.14 32S/13E-30N03 4/20/2011 580 76 58 4.2 62 23 140 142 16 <1 0.12 0.2 <0.1 0.0510 0.92 140 <2.0 <2.0 890 NA 32S/13E-30N03 1/24/2011 570 76 48 4.8 55 25 130 130 16 <1.0 0.12 0.2 <0.10 0.0088 1.7 130 <2.0 <2.0 900 <0.1 32S/13E-30N03 10/21/2010 550 69 59 3.3 65 31 133 130 15 <1.0 <0.1 0.1 NA <0.005 1.1 133 <10 <10 886 <0.1 32S/13E-30N03 7/27/2010 528 72 55.1 3.41 68.7 31.0 139 130 15.0 < 0.50 0.0672 0.14 0.11 < 0.00500 1.3 139 < 1.0 < 1.0 860 < 0.100 32S/13E-30N03 4/27/2010 672 89 60.6 3.65 70.6 32.5 134 130 14.0 < 0.50 0.0779 0.18 0.11 < 0.00500 1.2 134 < 1.0 < 1.0 870 < 0.100 32S/13E-30N03 1/26/2010 606 110 75.0 4.51 77.8 34.3 126 130 14 1.4 0.0654 0.15 < 0.10 0.0130 1.3 126 < 1.0 < 1.0 990 0.653 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-30N03 10/20/2009 806 180 93.3 25.5 92.3 41.5 162 150 9.7 2.2 0.107 0.26 < 0.10 0.245 1.4 162 < 1.0 < 1.0 1,200 0.344 32S/13E-30N03 8/20/2009 1,070 190 151 61.6 112 44.2 130 130 16 3.4 NA 0.20 < 0.10 0.151 1.6 130 < 1.0 < 1.0 1,700 1.93 32S/13E-30N03 5/12/2009 602 97 63.4 3.96 72.9 32.2 122 120 NA NA NA 0.22 NA 24 1.2 122 < 1.0 < 1.0 900 2.24 32S/13E-30N03 3/27/1996 624 70 62 4 78 35 150 161 24.126 NA 0.13 NA NA NA NA NA NA NA NA NA 32S/13E-30N03 6/7/1976 705 90 54 2.9 99 43 189 168 25.413 NA 0.08 0.5 NA NA NA NA NA NA NA NA 32S/13E-30N03 1/21/1966 804 57 54 3 132 59 410 250 1 NA 0.08 0.5 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H10 10/5/2021 630 34 36 2.7 110 52 360 160 0.1 0.21 0.067 0.21 0.0083 0.12 0.12 360 8.2 8.2 1,020 4.5 32S/13E-31H10 7/14/2021 580 34 37 2.7 110 52 360 160 0.048 0.4 0.055 0.19 0.0086 0.15 0.13 360 8.2 8.2 1,020 5.6 32S/13E-31H10 4/6/2021 480 36 41 3.1 31 52 250 93 0.024 0.17 0.062 0.055 0.011 0.18 0.16 250 4.1 4.1 2 32S/13E-31H10 1/6/2021 380 37 51 7.2 13 47 210 61 0.024 0.48 0.082 0.048 0.016 0.1 0.16 220 11 4.1 614 1.3 32S/13E-31H10 10/7/2020 660 33 35 2.6 97.0 47 350 150 0 0.23 0.08 0.180 0.008 0.14 0.12 350 0 0 965 4.8 32S/13E-31H10 7/7/2020 510 42 51 5.0 27.0 48 220 99 0 0.10 0.08 0.052 0.022 0.17 0.20 220 4 4 720 1.9 32S/13E-31H10 4/21/2020 430 38 50 5.3 21.0 44 220 73 0 0.28 0.07 0.055 0.020 0.13 0.14 220 0 0 669 1.9 32S/13E-31H10 1/14/2020 520 36 42 3.7 80.0 51 310 130 0 0.11 0.08 0.160 0.014 0.20 0.09 310 0 0 843 4.4 32S/13E-31H10 10/14/2019 630 34 42 3.9 110.0 52 350 150 0 0.00 0.08 0.140 0.000 0.20 0.00 350 0 0 974 6.6 32S/13E-31H10 7/9/2019 650 44 50 3.4 110.0 57 320 200 0 0.24 0.09 0.180 0.026 0.21 0.19 320 0 0 1,030 6.0 32S/13E-31H10 4/9/2019 630 43 48 3.4 100 50 320 200 ND 0.17 0.099 0.21 0.015 0.18 0.15 320 ND ND 1,040 4.8 32S/13E-31H10 1/8/2019 620 35 41 3.3 100 54 340 160 ND 0.17 0.081 0.18 0.012 0.16 0.14 340 ND ND 973 5.6 32S/13E-31H10 10/9/2018 590 33 45 5.3 88 54 330 120 ND 0.20 0.075 0.11 0.011 0.16 0.08 330 ND ND 916 6.5 32S/13E-31H10 7/12/2018 510 34 46 6.0 45 54 300 96 ND 0.23 0.080 0.12 0.012 0.12 0.16 300 ND ND 846 3.8 32S/13E-31H10 4/10/2018 690 41 51 3.5 120 55 310 200 ND 0.16 0.089 0.19 0.016 0.21 0.15 310 ND ND 1,020 4.7 32S/13E-31H10 1/10/2018 660 35 44 3.3 110 56 350 170 ND 0.23 0.075 0.20 0.016 0.2 0.17 350 ND ND 1,020 5.3 32S/13E-31H10 10/11/2017 640 33 41 3.1 120 57 360 160 ND 0.38 0.083 0.18 ND 0.21 0.13 450 89 ND 1070 4.3 32S/13E-31H10 7/11/2017 720 36 48 3.8 120 60 350 170 ND 0.17 0.09 0.15 0.011 0.17 0.13 350 ND ND 1,020 4.7 32S/13E-31H10 4/12/2017 600 39 47 3.4 120 62 340 190 ND ND 0.09 0.19 0.013 0.19 0.22 340 ND ND 1,020 5.2 32S/13E-31H10 1/13/2017 670 34 45 3.4 130 60 370 180 ND 0.16 0.076 0.17 0.014 0.22 0.1 370 ND ND 1,020 7.8 32S/13E-31H10 10/12/2016 700 33 40 3.2 120 59 380 170 ND 0.22 0.062 0.18 0.012 0.15 0.12 380 ND ND 1040 5.3 32S/13E-31H10 7/20/2016 630 33 42 4.4 99 57 370 150 <0.022 0.3 0.068 0.14 <0.01 0.19 0.14 370 <8.2 <8.2 991 8.9 32S/13E-31H10 4/13/2016 670 37 46 3.4 120 57 350 180 <0.022 0.21 0.078 0.19 0.011 0.23 0.14 350 <8.2 <8.2 1,030 6.7 32S/13E-31H10 1/13/2016 380 37 49 9.9 6.8 46 170 54 <0.022 0.43 0.044 0.088 0.014 0.084 0.19 210 34 <4.1 603 2.2 32S/13E-31H10 10/14/2015 320 32 33 2.7 17 48 216 68 <0.05 <1 0.089 0.12 0.016 0.098 <0.10 227 11 <10 600 1.4 32S/13E-31H10 7/15/2015 330 34 44 3.4 15 54 195 81 <0.05 <1 0.082 <0.1 <0.01 0.081 <0.1 213 18 <10 610 0.98 32S/13E-31H10 4/16/2015 660 35 33 2.7 99 48 360 170 <0.05 <1 0.083 0.163 <0.01 0.17 <0.1 360 <10 <10 1,000 4.6 32S/13E-31H10 1/14/2015 760 55 56 3.0 110 50 300 250 <0.05 <1 0.11 0.159 0.021 0.17 <0.1 300 <10 <10 1,070 4.2 32S/13E-31H10 10/16/2014 720 41 46 3.7 110 53 330 200 <0.05 <1 0.10 <0.1 <0.01 0.17 <0.1 330 <10 <10 1,090 6.5 32S/13E-31H10 7/30/2014 660 34 35 2.4 95 49 420 160 <0.05 <1 <0.1 0.16 <0.01 0.17 <0.1 420 <10 <10 1,040 6.5 32S/13E-31H10 4/17/2014 890 55 70 5.4 100 45 250 380 <0.05 <1 0.15 0.12 0.01 0.31 0.13 250 <10 <10 1,260 4.9 32S/13E-31H10 1/16/2014 900 57 66 4.60 110 50 240 360 <0.05 <1 0.180 0.2 0.02 0.32 <0.1 240 <10 <10 1,260 6.0 32S/13E-31H10 10/16/2013 690 30 40 3.40 100 49 340 190 <0.05 <1 0.091 0.14 <0.01 0.23 <0.1 340 <10 <10 1,050 7.4 32S/13E-31H10 7/11/2013 860 60 50 4.40 110 47 240 340 <0.05 <1 0.18 0.15 0.02 0.28 <0.1 240 <10 <10 1,230 4.9 32S/13E-31H10 4/11/2013 900 60 69 4.60 110 47 250 350 0.82 <1 0.2 0.12 0.03 0.28 <0.2 250 <10 <10 1,250 5.7 32S/13E-31H10 1/16/2013 820 66 76 5.00 100 47 260 320 <0.1 <1 0.21 0.13 <0.01 0.31 <0.2 260 <10 <10 1,230 4.2 32S/13E-31H10 10/30/2012 780 65 75 4.70 100 46 255 280 <0.05 <1 0.19 0.14 0.04 0.23 <0.1 255 <10 <10 1,190 4 32S/13E-31H10 7/25/2012 830 76 80 5.30 96 45 250 310 <0.05 <1 0.22 0.15 0.04 0.24 <0.1 250 <10 <10 1,220 6.7 32S/13E-31H10 4/19/2012 790 87 69 4.50 52 37 250 270 <0.1 <1 0.19 0.21 0.05 0.17 <0.2 250 <10 <10 1,180 4 32S/13E-31H10 1/12/2012 760 76 85 4.00 79 40 270 190 <0.1 <1 0.23 0.21 0.069 0.23 <0.2 270 <10 <10 1,150 4.8 32S/13E-31H10 11/21/2011 720 39 38 3.40 96 43 320 180 <0.05 3.5 0.079 0.19 0.013 0.17 <0.1 320 <10 <10 1,050 4.8 32S/13E-31H10 7/25/2011 760 69 66 6.40 80 35 310 208.8 <0.05 <1 0.16 0.17 0.041 0.23 0.199 310 <5 <5 1,170 5.3 32S/13E-31H10 1/24/2011 310 98 22 8.1 34 9.2 19.0 53 <0.05 <1.0 <0.1 0.2 4.42 0.4 0.63 19.0 <2.0 <2.0 480 10 32S/13E-31H10 10/28/2010 290 81 26 9.3 64 11 160.0 68 <0.1 <1.0 <0.1 0.2 NA 0.85 0.36 160.0 <10 <10 520 38 32S/13E-31H10 7/26/2010 438 85 34.3 1.93 61.7 30.4 30.0 210 < 0.10 < 0.50 0.0435 0.58 0.22 1.46 0.32 30.0 < 1.0 < 1.0 690 36 32S/13E-31H10 4/26/2010 560 83 47.7 5.7 86.1 48.3 62 310 < 0.10 0.84 < 0.02 < 0.1 0.56 2.54 0.31 62.0 < 1.0 < 1.0 880 233 32S/13E-31H10 1/27/2010 460 130 45.0 25.4 682 124 112 100 0.56 NA < 0.0200 0.21 0.25 32.4 0.49 112.0 < 1.0 < 1.0 760 4,360 32S/13E-31H10 10/20/2009 362 92 39.6 2.92 19.2 45.1 76.8 110 < 0.10 < 0.50 0.0697 < 0.10 < 0.10 0.242 0.39 80.0 3.2 < 1.0 590 11.4 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H10 8/19/2009 420 160 48.4 3.37 49.9 20.4 17.6 54 < 0.10 1.1 NA < 0.10 0.25 1.76 0.68 17.6 < 1.0 < 1.0 690 242 32S/13E-31H10 5/16/1983 665 35 40 NA 85 65 360 90 < 4 NA NA 0.2 NA 0.01 NA 360 ND ND 950 0.10 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H11 10/5/2021 680 37 44 3.3 120 53 340 200 0.1 0.2 0.08 0.19 0.0089 0.23 0.12 340 8.2 8.2 1,060 5.1 32S/13E-31H11 7/14/2021 640 37 41 3 110 50 350 210 0.024 0.13 0.06 0.19 0.012 0.22 0.15 350 8.2 8.2 1,070 4.8 32S/13E-31H11 4/6/2021 680 37 42 3 110 49 340 210 0.024 0.15 0.072 0.2 0.011 0.2 0.15 340 8.2 8.2 4.6 32S/13E-31H11 1/6/2021 620 38 47 3.5 120 55 340 210 0.024 0.49 0.087 0.2 0.015 0.22 0.18 340 8.2 8.2 1,050 4.9 32S/13E-31H11 10/7/2020 680 37 41 3.6 110.0 55 330 200 0 0.13 0.09 0.210 0.000 0.22 0.12 330 0 0 1,020 11.0 32S/13E-31H11 7/7/2020 410 62 69 5.2 3.1 41 140 57 0 0.20 0.11 0.056 0.051 0.02 0.32 170 36 4 636 0.9 32S/13E-31H11 4/21/2020 450 60 59 4.4 5.1 45 170 85 0 0.21 0.10 0.068 0.054 0.04 0.26 180 14 0 698 0.7 32S/13E-31H11 1/14/2020 680 73 76 3.6 110.0 44 300 210 0 0.11 0.17 0.200 0.075 0.18 0.26 300 0 0 1,070 3.8 32S/13E-31H11 10/14/2019 750 48 56 3.7 120.0 50 320 200 0 0.00 0.11 0.160 0.027 0.24 0.15 320 0 0 1,070 5.7 32S/13E-31H11 7/9/2019 650 61 73 4.0 110.0 52 310 210 0 0.17 0.16 0.170 0.054 0.24 0.28 310 0 0 1,110 5.9 32S/13E-31H11 4/9/2019 700 61 66 3.7 110 48 300 240 ND 0.18 0.140 0.20 0.041 0.19 0.27 300 ND ND 1,140 3.7 32S/13E-31H11 1/8/2019 730 39 45 3.6 120 52 340 220 ND 0.14 0.087 0.18 0.016 0.24 0.13 340 ND ND 1090 8.2 32S/13E-31H11 10/9/2018 720 37 49 3.8 130 59 340 210 ND 0.24 0.091 0.15 0.015 0.23 0.08 340 ND ND 1,090 8.2 32S/13E-31H11 7/12/2018 720 36 43 3.6 120 54 340 190 ND 0.27 0.082 0.17 0.014 0.25 0.15 340 ND ND 1,110 7.2 32S/13E-31H11 4/10/2018 780 73 81 3.8 110 47 300 210 ND 0.090 0.17 0.18 0.066 0.24 0.40 300 ND ND 1,130 7.3 32S/13E-31H11 1/10/2018 750 39 51 3.7 130 57 340 220 ND 0.17 0.089 0.20 0.021 0.28 0.16 340 ND ND 1,090 5.9 32S/13E-31H11 10/11/2017 720 38 45 3.7 120 56 350 200 ND 0.22 0.13 0.18 0.015 0.22 0.14 350 ND ND 1080 5.6 32S/13E-31H11 7/11/2017 820 43 53 3.9 130 58 320 230 ND 0.11 0.11 0.13 0.018 0.29 0.19 320 ND ND 1,100 9.7 32S/13E-31H11 4/12/2017 720 45 53 3.8 120 56 320 250 ND ND 0.11 0.17 0.022 0.25 0.18 320 ND ND 1,100 6.3 32S/13E-31H11 1/13/2017 750 44 57 4 130 58 340 240 ND 0.11 0.11 0.13 0.024 0.29 0.15 340 ND ND 1,100 7.20 32S/13E-31H11 10/12/2016 780 41 49 3.9 120 57 350 220 ND 0.12 0.097 0.16 0.021 0.28 0.16 350 ND ND 1100 8.10 32S/13E-31H11 7/20/2016 420 120 64 6.8 4.3 38 60 39 <0.022 0.097 0.12 0.059 0.084 0.084 0.59 89 29 <4.1 617 9.0 32S/13E-31H11 4/13/2016 410 110 64 604 3.9 40 51 56 <0.022 <0.080 0.11 0.058 0.084 0.053 0.58 92 41 <4.1 628 6.7 32S/13E-31H11 1/13/2016 450 120 70 7.7 4.5 36 49 65 <0.022 <0.080 0.11 0.095 0.11 0.072 0.76 86 37 <4.1 675 8.6 32S/13E-31H11 10/14/2015 350 110 69 9.2 3.7 31 42 74 <0.05 <1 0.16 <0.10 0.099 0.036 0.44 75 33 <10 670 5.7 32S/13E-31H11 7/15/2015 380 120 85 11.0 4.3 35 40 85 <0.05 <1 0.19 <0.1 0.1 0.05 0.409 65 25 <10 690 9.6 32S/13E-31H11 4/16/2015 400 120 66 7.6 4.9 36 54 100 <0.05 <1 0.17 <0.1 0.088 0.039 0.481 76 22 <10 700 6.6 32S/13E-31H11 1/14/2015 420 125 68 7.0 6.4 37 45 126 <0.05 <1 0.15 <0.1 0.097 0.038 0.39 65 20 <10 720 3.5 32S/13E-31H11 10/16/2014 370 120 78 13.0 4.2 29 53 77 <0.05 <1 0.17 <0.1 0.11 0.040 0.35 88 <10 <10 740 4.5 32S/13E-31H11 7/30/2014 450 120 71 4.4 9.6 43 53 130 0.13 <1 0.15 0.12 0.1 0.078 0.29 73 20 <10 800 8 32S/13E-31H11 4/17/2014 370 120 89 14.0 2.4 17 76 39 <0.05 <1 0.16 <0.1 0.12 0.03 0.43 121 45 <10 720 3.7 32S/13E-31H11 1/16/2014 350 122 89 15 2 18 68 42 <0.05 <1 0.17 0.1 0.09 0.026 0.48 125 57.5 <10 710 2.3 32S/13E-31H11 10/16/2013 360 100 98 20 3.1 15 66 36 <0.05 <1 0.19 <0.1 0.11 0.057 0.38 139 73 <10 710 4.1 32S/13E-31H11 7/11/2013 370 140 70 6.3 4 23 82 40 0.4 <1 0.2 0.11 0.11 0.043 0.44 117 35 <10 730 3.2 32S/13E-31H11 4/11/2013 340 90 81 14 2.9 18 78 30 <0.05 <1 0.19 0.12 0.07 0.046 0.3 155 77.5 <10 650 3.2 32S/13E-31H11 1/16/2013 360 107 99 7.1 3.3 24 110 36 <0.05 <1 0.25 <0.1 <0.01 0.048 0.4 165 55 <10 720 3.7 32S/13E-31H11 10/30/2012 380 97 100 6.4 4.5 24 130 38 <0.05 <1 0.28 <0.1 0.1 0.09 0.2 168 38 <10 720 6.1 32S/13E-31H11 7/25/2012 240 49 56 11 5.4 22 99 43 <0.05 <1 0.16 0.19 0.023 0.11 <0.1 132 33 <10 470 6.6 32S/13E-31H11 4/19/2012 380 100 87 5.5 3.5 26 150 79 <0.1 <1 0.27 0.26 0.09 0.033 0.68 180 30 <10 750 1.6 32S/13E-31H11 1/12/2012 480 96 110 4.9 5.6 33 154 95 <0.1 <1 0.28 <0.2 0.11 0.01 0.306 180 26 <10 850 0.2 32S/13E-31H11 11/21/2011 390 90 78 4.6 5.2 24 111 86 <0.05 <1 0.19 0.13 0.092 0.014 0.28 128 17 <10 720 0.5 32S/13E-31H11 7/25/2011 260 29 23 5.3 8.7 20 84 80 <0.05 <1 <0.1 0.199 0.072 0.041 <0.1 89 <5 <5 440 2.7 32S/13E-31H11 4/21/2011 580 118 70 19 49 17 8.8 274 <0.05 <1 <0.1 0.29 0.109 0.091 0.4 11.3 2.5 <2.0 950 NA 32S/13E-31H11 1/24/2011 680 110 60 17 64 22 5.0 330 <0.05 <1.0 <0.1 0.22 0.96 0.16 0.31 11.2 6.2 <2.0 1,040 10.0 32S/13E-31H11 10/21/2010 770 100 68 12 88 31 14.0 380 <0.1 <1.0 <0.1 0.28 NA 0.054 <0.3 14.0 <10 <10 1,163 2.2 32S/13E-31H11 7/26/2010 783 130 80.1 8.58 142 42.0 2.8 450 < 0.10 < 0.50 < 0.0200 0.26 0.31 3.97 0.8 2.8 < 1.0 < 1.0 1,200 593 32S/13E-31H11 4/26/2010 1,130 160 70.2 6.48 208 50.7 8.4 530 < 0.10 0.56 < 0.02 0.23 0.54 3.10 1.0 8.4 < 1.0 < 1.0 1,600 383 32S/13E-31H11 1/27/2010 1,740 430 55.6 4.98 282 43.0 < 1.0 680 < 0.10 < 0.50 0.0819 0.14 0.41 9.41 2.0 < 1.0 < 1.0 < 1.0 2,300 170 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H11 10/20/2009 2,250 1,000 19.5 2.40 487 22.5 5.0 410 < 0.10 0.98 0.0532 0.13 < 0.10 13.1 4.5 5.0 < 1.0 < 1.0 3,100 236 32S/13E-31H11 8/19/2009 322 150 93.2 16.7 23.9 12.1 3.0 4.0 < 0.10 1.3 NA 0.19 0.5 0.7 0.74 23.0 20.0 < 1.0 640 153 32S/13E-31H11 5/16/1983 840 80 90 NA 100 50 250 160.0 < 4 NA ND 0.2 NA 0.14 NA 250.0 ND ND 1,200 0.10 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H12 4/21/2011 410 97 100 7.2 3.5 21 80 134 <0.05 <1 0.23 0.18 0.097 0.065 0.42 100 20 <2.0 770 NA 32S/13E-31H12 1/24/2011 440 92 90 9.2 3.4 27 90 140 <0.05 <1.0 0.25 0.11 0.94 0.041 0.35 110 20 <2.0 810 2.2 32S/13E-31H12 10/21/2010 460 90 110 15 6.8 32 94 140 <0.1 <1.0 0.2 0.1 NA 0.1 0.38 124 30 <10 868 3.5 32S/13E-31H12 7/26/2010 478 83 109 5.94 52.9 30.4 122.0 94 < 0.10 <0.50 0.255 < 0.10 0.41 0.477 0.56 130.0 8.0 < 1.0 730 61.0 32S/13E-31H12 4/26/2010 452 83 83 7.42 29.3 34.5 72.0 190 < 0.1 0.56 0.134 < 0.10 0.65 0.702 0.4 86.0 14.0 < 1.0 810 71.0 32S/13E-31H12 1/27/2010 496 71 92.2 10.6 22.9 39.1 13.0 230 <0.10 < 0.50 0.323 < 0.10 0.20 0.604 0.29 51.0 38.0 < 1.0 780 54.4 32S/13E-31H12 10/20/2009 564 71 80.8 8.63 33.2 49.8 49.6 310 <0.10 < 0.50 0.148 < 0.10 < 0.10 0.337 0.32 64.0 14.4 < 1.0 850 20.0 32S/13E-31H12 8/19/2009 522 180 148 71.6 95.2 8.42 30.0 3.5 <0.10 1.7 NA 0.24 0.52 2.36 0.76 170 140 < 1.0 1,000 278 32S/13E-31H12 5/16/1983 630 40 40 NA 90 50 330 80 < 4 NA NA 0.1 NA 0.02 NA 330 ND ND 900 0.05 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H13 10/5/2021 500 100 83 3.8 11 43 200 41 0.1 0.11 0.17 0.067 0.051 0.22 0.33 210 8.4 4.1 772 0.5 32S/13E-31H13 7/14/2021 490 99 85 3.6 13 35 210 29 0.024 0.088 0.16 0.059 0.049 0.13 0.34 220 9 4.1 760 0.76 32S/13E-31H13 4/6/2021 430 110 97 4.2 2.9 28 170 0.52 0.024 0.088 0.19 0.066 0.056 0.061 0.36 210 38 4.1 0.16 32S/13E-31H13 1/6/2021 480 110 98 4.4 3 28 170 0.48 0.024 0.3 0.21 0.054 0.063 0.063 0.35 210 33 4.1 678 0.18 32S/13E-31H13 10/7/2020 530 100 98 4.3 3.8 31 180 0 0 0.00 0.22 0.063 0.059 0.07 0.32 210 32 0 685 0.9 32S/13E-31H13 7/7/2020 500 110 100 4.4 3.2 29 180 2 0 0.20 0.21 0.054 0.069 0.05 0.35 200 25 4 729 0.2 32S/13E-31H13 4/21/2020 470 100 100 4.8 2.6 30 180 0 0 0.08 0.20 0.064 0.079 0.05 0.36 220 37 0 721 0.4 32S/13E-31H13 1/14/2020 430 120 110 4.6 3.3 29 190 10 0 0.00 0.25 0.084 0.094 0.05 0.28 220 35 0 730 0.4 32S/13E-31H13 10/14/2019 280 99 93 4.7 2.7 32 180 1 0 0.00 0.18 0.064 0.066 0.05 0.30 210 37 0 675 0.3 32S/13E-31H13 7/9/2019 500 90 83 4.7 3.7 36 170 1 0 0.08 0.16 0.062 0.059 0.08 0.35 200 26 0 654 2.9 32S/13E-31H13 4/9/2019 460 100 79 4.0 3.8 34 180 8 ND 0.05 0.18 0.075 0.055 0.07 0.31 210 27 ND 690 2.1 32S/13E-31H13 1/8/2019 400 99 79 4.3 6.7 42 180 19 ND 0.06 0.17 0.057 0.057 0.13 0.29 200 19 ND 703 2.2 32S/13E-31H13 10/9/2018 400 84 79 4.2 4.9 43 190 13 ND 0.052 0.16 0.043 0.045 0.083 0.18 220 23 ND 678 2.1 32S/13E-31H13 7/12/2018 470 81 72 3.9 3.9 38 190 13 ND 0.096 0.14 0.041 0.045 0.064 0.31 220 25 ND 699 0.86 32S/13E-31H13 4/10/2018 490 82 78 3.8 4.5 44 190 20 ND ND 0.14 0.039 0.041 0.083 0.30 220 30 ND 676 4.2 32S/13E-31H13 1/10/2018 430 75 75 3.8 4.3 38 190 7.2 ND ND 0.14 0.050 0.046 0.07 0.25 210 26 ND 626 2.5 32S/13E-31H13 10/11/2017 390 77 70 3.7 4.9 38 190 15 ND 0.11 0.16 0.034 0.039 0.079 0.28 220 29 ND 648 1.1 32S/13E-31H13 7/11/2017 390 76 80 3.9 7.8 45 190 30 ND ND 0.15 0.033 0.036 0.13 0.28 210 19 ND 680 2.2 32S/13E-31H13 4/12/2017 430 79 87 4.4 4 44 180 21 ND 0.13 0.17 0.024 0.043 0.77 0.28 220 40 ND 667 4.5 32S/13E-31H13 1/13/2017 480 81 95 4.7 3.9 41 190 14 ND ND 0.19 0.037 0.056 0.065 0.31 220 33 ND 652 3.3 32S/13E-31H13 10/12/2016 410 80 87 4.3 4.2 43 190 22 ND ND 0.18 0.04 0.055 0.072 0.29 220 33 ND 678 2.3 32S/13E-31H13 7/20/2016 510 91 99 5.1 2.4 34 170 19 <0.022 <0.080 0.22 0.043 0.054 0.038 0.43 210 44 <4.1 694 1.2 32S/13E-31H13 4/13/2016 450 94 99 4.6 2.5 33 150 25 <0.022 <0.080 0.22 0.054 0.045 0.035 0.44 200 51 <4.1 701 1.2 32S/13E-31H13 1/13/2016 460 99 97 4.8 2.6 32 150 30 <0.022 <0.080 0.19 0.084 <0.010 0.038 0.53 190 43 <4.1 717 0.33 32S/13E-31H13 10/14/2015 370 85 91 4.8 3.1 32 159 45 <0.05 <1 0.23 <0.10 0.060 0.043 0.26 189 30 <10 710 0.30 32S/13E-31H13 7/15/2015 390 90 99 4.4 2.7 34 145 55 <0.05 <1 0.21 <0.1 0.06 0.034 0.24 185 40 <10 730 0.24 32S/13E-31H13 4/16/2015 360 89 86 4.8 2.6 31 137 58 <0.05 <1 0.20 <0.1 0.057 0.030 0.266 172 35 <10 680 0.42 32S/13E-31H13 1/14/2015 390 90 84 4.8 2 31 140 61 <0.05 <1 0.18 <0.1 0.059 0.035 0.24 170 30 <10 670 0.47 32S/13E-31H13 10/16/2014 370 80 84 5.0 3.2 32 146 59 <0.05 <1 0.19 <0.1 0.055 0.044 0.18 170 24 <10 720 0.61 32S/13E-31H13 7/30/2014 380 86 81 4.2 3.6 35 158 61 <0.05 <1 0.16 <0.1 0.05 0.047 0.17 175 17 <10 730 0.25 32S/13E-31H13 4/17/2014 380 84 86 5.2 3 26 120 87 <0.05 <1 0.18 <0.1 0.08 0.032 0.3 143 23 <10 730 0.45 32S/13E-31H13 1/16/2014 390 89 91 5.0 4.1 34 119 103 <0.05 <1 0.20 <0.1 0.06 0.043 0.34 136 17 <10 740 0.30 32S/13E-31H13 10/16/2013 410 84 87 4.7 5.3 33 114 130 <0.05 <1 0.17 <0.1 0.08 0.053 0.3 124 10 <10 760 0.28 32S/13E-31H13 7/11/2013 420 80 70 4.8 4.5 35 116 120 <0.05 <1 0.19 <0.1 0.06 0.047 0.21 136 20 <10 760 0.19 32S/13E-31H13 4/11/2013 450 77 77 4.7 5.8 38 113 150 <0.05 <1 0.19 <0.1 0.06 0.069 0.2 128 15 <10 780 0.15 32S/13E-31H13 1/15/2013 420 74 78 4.7 7.0 40 110 180 <0.05 <1 0.18 <0.1 <0.01 0.087 <0.1 125 15 <10 810 0.55 32S/13E-31H13 10/30/2012 380 88 99 5.7 3.3 30 160 63 <0.05 <1 0.25 <0.1 0.08 0.035 0.3 168 7.5 <10 740 0.33 32S/13E-31H13 7/25/2012 390 108 107 5.5 2.7 29 13 66 <0.05 <1 0.28 <0.1 0.079 0.0037 0.23 168 155 <10 750 0.84 32S/13E-31H13 4/19/2012 390 110 83 4.3 2.5 26 400 68 <0.1 <1 0.22 0.23 0.09 0.032 0.39 420 20 <10 790 0.24 32S/13E-31H13 1/12/2012 410 94 95 4.5 3.0 28 300 68 <0.1 <1 0.24 <0.2 0.1 0.032 0.31 320 20 <10 760 0.89 32S/13E-31H13 11/21/2011 410 94 83 4.6 3.4 30 152 72 <0.05 <1 0.21 <0.1 0.09 0.035 0.3 160 8 <10 730 0.65 32S/13E-31H13 7/25/2011 420 90 84 7.1 4.4 31 148 91.8 <0.05 <1 0.20 <0.1 0.071 0.046 0.297 150 2.5 <5 760 1.90 32S/13E-31H13 4/21/2011 380 88 110 6.3 4.0 27 140 101 <0.05 <1 0.41 0.14 0.07 0.13 0.33 140 <2.0 <2.0 750 N/A 32S/13E-31H13 1/24/2011 430 83 73 6 6.3 31 160 100 <0.05 <1.0 0.22 0.11 0.66 0.078 0.28 160 <2.0 <2.0 780 0.49 32S/13E-31H13 10/21/2010 410 87 100 3.9 6.0 33 148 100 <0.1 <1.0 0.14 <0.1 NA 0.087 <0.3 148 <10 <10 796 0.66 32S/13E-31H13 7/26/2010 446 94 93.0 8.81 10.2 32.0 38.4 120 < 0.10 < 0.50 0.142 < 0.10 0.32 0.196 0.48 56.0 17.6 < 1.0 700 22.4 32S/13E-31H13 4/26/2010 416 96 87.6 9.86 14.8 37.1 46.0 150 < 0.1 0.63 0.132 < 0.10 0.39 0.579 0.44 58.0 12.0 < 1.0 780 56.2 32S/13E-31H13 1/27/2010 498 89 79.6 10.2 15.6 38.0 31.0 180 < 0.10 0.56 0.132 < 0.10 0.19 0.283 0.38 51.0 20.0 < 1.0 810 23.6 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H13 10/20/2009 446 100 97.1 12.8 16.4 37.9 26.6 180 < 0.10 0.56 0.168 0.2 < 0.10 0.180 0.42 42.6 16.0 < 1.0 760 18.9 32S/13E-31H13 8/19/2009 426 160 101 18.9 93.2 29.1 64.4 36 < 0.10 0.98 NA 0.2 0.31 5.490 0.60 84.4 20.0 < 1.0 790 682 32S/13E-31H13 5/16/1983 770 60 70 NA 90 70 330 120 9 NA NA 0.1 NA 0.02 NA 330 ND ND 1,100 0.24 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 32S/13E-31H09 10/5/2021 690 45 47 2.5 110 49 350 170 0.1 0.32 0.078 0.13 0.1 0.031 0.15 350 8.2 8.2 1,050 0.05 32S/13E-31H09 7/14/2021 620 45 47 2.5 110 50 360 170 0.048 0.23 0.068 0.13 0.016 0.032 0.18 360 8.2 8.2 1,070 0.11 32S/13E-31H09 4/6/2021 650 45 45 2.3 110 48 360 170 0.033 0.14 0.07 0.13 0.012 0.034 0.19 360 8.2 8.2 0.23 32S/13E-31H09 1/7/2021 600 46 48 2.6 110 51 350 170 0.026 0.43 0.071 0.14 0.018 0.037 0.2 350 8.2 8.2 1,060 0.2 32S/13E-31H09 10/13/2020 670 46 46 2.5 110.0 47 350 170 0 0.00 0.07 0.130 0.017 0.03 0.17 350 0 0 1,050 0.2 32S/13E-31H09 7/7/2020 780 44 49 2.6 120.0 53 370 170 0 0.20 0.07 0.110 0.018 0.04 0.13 370 8 8 1,060 0.2 32S/13E-31H09 4/21/2020 620 42 48 2.7 120.0 50 380 170 0 0.19 0.07 0.160 0.018 0.04 0.14 380 0 0 1,070 0.3 32S/13E-31H09 1/14/2020 670 44 50 2.8 130.0 52 350 170 0 0.11 0.08 0.130 0.021 0.04 0.16 350 0 0 1,010 0.3 32S/13E-31H09 10/15/2019 670 43 51 2.7 120.0 50 360 170 0 0.10 0.07 0.110 0.016 0.04 0.16 360 0 0 1,060 0.2 32S/13E-31H09 4/9/2019 620 43 44 2.5 110 50 360 170 ND 0.11 0.08 0.14 0.013 0.033 0.14 360 ND ND 1,060 0.05 32S/13E-31H09 1/8/2019 690 44 44 2.6 110 52 370 170 0.047 0.11 0.075 0.16 0.018 0.035 0.15 370 ND ND 1,060 0.080 32S/13E-31H09 10/9/2018 690 42 46 2.7 110 54 360 170 0.03 0.15 0.067 0.11 0.017 0.035 0.09 360 ND ND 1,080 0.042 32S/13E-31H09 7/10/2018 630 46 47 2.6 120 53 360 170 ND 0.11 0.073 0.13 0.018 0.032 0.17 360 ND ND 1,100 0.041 32S/13E-31H09 4/10/2018 700 44 45 2.5 110 51 360 170 0.074 0.11 0.068 0.13 0.016 0.035 0.17 360 ND ND 1,060 0.10 32S/13E-31H09 1/10/2018 680 40 46 2.6 120 53 360 160 ND 0.14 0.062 0.16 0.019 0.048 0.14 360 ND ND 1,040 0.38 32S/13E-31H09 10/11/2017 640 40 47 2.6 120 55 370 160 0.024 0.12 0.079 0.13 0.016 0.046 0.13 370 ND ND 1020 0.34 32S/13E-31H09 7/11/2017 750 40 48 2.8 120 56 360 170 ND ND 0.075 0.11 0.015 0.057 0.15 360 ND ND 1,050 0.42 32S/13E-31H09 4/12/2017 620 42 52 3.1 130 60 360 170 0.037 ND 0.082 0.17 0.017 0.05 0.14 360 ND ND 1,040 0.30 32S/13E-31H09 1/11/2017 640 61 53 3 100 48 320 150 ND ND 0.071 0.16 0.02 0.05 0.24 320 ND ND 976 0.40 32S/13E-31H09 10/12/2016 720 46 49 2.8 120 56 370 170 0.029 0.18 0.069 0.12 0.021 0.041 0.18 370 ND ND 1070 0.36 32S/13E-31H09 7/20/2016 680 45 50 2.9 120 56 370 160 0.0407 0.14 0.075 0.15 0.013 0.049 0.16 370 <8.2 <8.2 1,060 0.33 32S/13E-31H09 4/13/2016 670 43 48 2.9 110 57 350 160 <0.022 0.2 0.062 0.14 0.012 0.056 0.18 350 <8.2 <8.2 1,040 0.46 32S/13E-31H09 1/12/2016 630 48 48 2.8 110 54 350 180 0.051 0.14 0.042 0.24 0.017 0.047 0.36 350 <8.2 <8.2 1,100 0.46 32S/13E-31H09 10/14/2015 680 43 44 3.1 100 50 360 160 <0.05 <1 0.089 0.28 0.02 0.033 <0.10 360 <10 <10 1,060 0.18 32S/13E-31H09 7/15/2015 680 43 52 2.4 120 56 360 170 <0.05 <1 0.079 0.11 0.01 0.033 <0.1 360 <10 <10 1,070 0.13 32S/13E-31H09 4/16/2015 680 49 41 2.4 100 47 350 170 <0.05 <1 0.068 0.114 <0.01 0.039 <0.1 350 <10 <10 1,030 0.47 32S/13E-31H09 10/16/2014 670 40 43 2.8 110 50 3500 150 <0.05 <1 0.055 0.103 <0.01 0.03 <0.1 350 <10 <10 1,060 0.064 32S/13E-31H09 7/30/2014 670 43 43 2.2 110 48 360 160 <0.05 <1 <0.1 0.15 <0.01 0.029 <0.1 360 <10 <10 1,070 0.057 32S/13E-31H09 4/15/2014 680 42 43 3.3 87 43 340 170 <0.05 <1 0.09 0.11 <0.01 0.023 <0.1 340 <10 <10 1,070 0.05 32S/13E-31H09 1/16/2014 680 45 42 2.6 100 46 360 171 <0.05 <1 <0.05 0.13 <0.01 0.032 <0.1 360 <10 <10 1,060 0.18 32S/13E-31H09 10/16/2013 670 40 44 2.6 100 47 350 180 0.47 <1 <0.05 0.15 <0.01 0.03 <0.1 350 <10 <10 1,053 0.11 32S/13E-31H09 7/10/2013 670 44 43 2.8 110 52 350 180 <0.05 <1 0.072 0.12 <0.01 0.032 <0.1 350 <10 <10 1,070 0.11 32S/13E-31H09 4/11/2013 720 43 40 2.7 98 46 350 170 <0.05 <1 0.072 0.14 <0.01 0.029 <0.1 350 <10 <10 1,070 0.12 32S/13E-31H09 1/16/2013 660 43 43 2.7 100 47 360 180 <0.05 <1 0.07 0.1 <0.01 0.031 <0.1 360 <10 <10 1,060 0.130 32S/13E-31H09 10/30/2012 660 40 44 2.9 110 49 345 170 <0.05 <1 0.071 0.14 <0.01 0.03 <0.1 345 <10 <10 1,070 0.086 32S/13E-31H09 7/24/2012 700 47 44 2.8 93 45 356 180 <0.05 <1 <0.1 0.17 <0.01 0.029 <0.1 356 <10 <10 1,070 0.660 32S/13E-31H09 4/25/2012 680 48 44 2.7 95 43 350 200 <0.1 <1 <0.1 0.26 <0.01 0.032 <0.2 350 <10 <10 1,070 0.200 32S/13E-31H09 1/10/2012 690 45 44 2.6 100 44 340 160 <0.05 <1 <0.1 0.2 <0.01 0.024 <0.1 340 <10 <10 1,070 0.100 32S/13E-31H09 11/22/2011 690 41 39 2.7 100 46 350 160 <0.1 <1 0.046 <0.2 0.013 0.03 <0.2 350 <10 <10 1,010 0.0 32S/13E-31H09 7/25/2011 690 44 39 4.5 86 40 340 166.9 <0.05 <1 <0.1 0.145 <0.01 0.026 <0.1 340 <5 <5 1,070 <0.1 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 12N/36W-36L01 10/6/2021 890 33 67 3.3 130 44 180 400 0.39 0.2 0.15 0.1 0.1 0.01 0.4 180 8.2 8.2 0.05 12N/36W-36L01 7/15/2021 840 34 63 3.3 120 43 180 420 0.42 0.088 0.17 0.05 0.005 0.004 0.14 180 8.2 8.2 1,180 0.03 12N/36W-36L01 4/8/2021 840 38 67 3.4 130 44 180 420 0.45 0.19 0.16 0.047 0.005 0.004 0.07 180 8.2 8.2 1,170 0.03 12N/36W-36L01 1/7/2021 820 39 69 3.3 130 47 180 430 0.46 0.48 0.16 0.053 0.005 0.004 0.17 180 8.2 8.2 1,170 0.03 12N/36W-36L01 10/11/2020 940 39 67 3.3 130.0 44 180 440 0 0.14 0.16 0.046 0.000 0.00 0.10 180 0 0 1,180 0.1 12N/36W-36L01 7/8/2020 1,000 40 71 3.5 130.0 46 180 430 0 0.20 0.17 0.051 0.100 0.01 0.13 180 8 8 1,190 0.1 12N/36W-36L01 4/22/2020 880 38 65 3.3 120.0 42 180 420 0 0.14 0.16 0.034 0.000 0.00 0.08 180 0 0 1,210 0.1 12N/36W-36L01 1/15/2020 960 39 70 3.6 140.0 45 180 420 0 0.13 0.18 0.056 0.000 0.00 0.09 180 0 0 1,140 0.1 12N/36W-36L01 10/15/2019 880 38 73 3.6 140.0 45 180 440 0 0.09 0.18 0.044 0.000 0.00 0.12 180 0 0 1,190 0.1 12N/36W-36L01 7/10/2019 700 37 70 3.6 140.0 51 180 430 0 0.15 0.17 0.047 0.000 0.00 0.00 180 0 0 1,180 0.0 12N/36W-36L01 4/10/2019 870 39 64 3.5 130 48 180 440 0.46 1.5 0.2 0.06 ND ND 0.14 180 ND ND 1,190 0.08 12N/36W-36L01 1/9/2019 840 39 70 3.4 140 46 180 420 0.45 0.23 0.17 0.064 ND ND 0.089 180 ND ND 1,200 ND 12N/36W-36L01 10/10/2018 850 38 67 3.5 140 49 180 430 0.43 0.16 0.16 0.03 ND ND ND 180 ND ND 1,190 0.19 12N/36W-36L01 7/10/2018 960 39 64 3.4 130 47 180 430 0.50 0.11 0.17 0.12 ND ND 0.063 180 ND ND 1,230 ND 12N/36W-36L01 4/11/2018 900 39 70 3.5 140 49 180 430 0.48 0.11 0.16 0.052 ND ND 0.10 180 ND ND 1,190 ND 12N/36W-36L01 1/11/2018 940 38 76 3.5 140 50 180 440 0.37 0.19 0.17 0.073 ND ND 0.097 180 ND ND 1,180 ND 12N/36W-36L01 10/11/2017 880 35 65 3.7 140 50 190 430 0.43 0.14 0.19 0.048 ND 0.054 ND 190 ND ND 1210 0.23 12N/36W-36L01 7/12/2017 1,000 37 73 3.9 150 55 180 420 0.36 0.15 0.17 0.034 ND 0.0048 ND 180 ND ND 1,180 0.23 12N/36W-36L01 4/12/2017 860 37 73 4 130 49 180 420 0.45 0.14 0.17 0.017 ND 0.0087 0.06 180 ND ND 1,170 0.43 12N/36W-36L01 1/12/2017 870 38 76 3.8 150 55 190 430 0.46 0.12 0.21 0.036 ND ND 0.07 190 ND ND 1,180 0.11 12N/36W-36L01 10/12/2016 890 35 72 3.8 140 56 190 430 0.42 0.11 0.17 0.036 ND ND 0.12 190 ND ND 1220 0.037 12N/36W-36L01 7/19/2016 920 37 69 3.6 130 50 180 430 0.4292 0.25 0.15 0.043 <0.010 <0.0040 0.10 180 <8.2 <8.2 1,200 <0.030 12N/36W-36L01 4/12/2016 860 38 65 3.5 130 49 180 390 0.5 <0.080 0.16 0.036 <0.010 <0.0040 0.12 180 <8.2 <8.2 1,210 <0.05 12N/36W-36L01 1/14/2016 890 36 64 3.4 130 49 180 410 0.47 <0.080 0.15 0.062 <0.010 <0.0040 0.10 180 <8.2 <8.2 1,210 0.070 12N/36W-36L01 10/15/2015 920 37 63 4.2 120 47 180 400 0.68 <1 0.15 <0.20 <0.01 <0.005 <0.20 180 <10 <10 1,210 <0.05 12N/36W-36L01 7/16/2015 930 39 74 2.8 140 50 180 410 1.2 <1 0.15 <0.1 <0.01 <0.005 <0.1 180 <10 <10 1,210 <0.05 12N/36W-36L01 4/14/2015 890 38 55 3.1 110 44 180 440 0.759 1.0 0.16 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,160 <0.05 12N/36W-36L01 1/13/2015 880 39 59 3.0 120 45 180 440 0.584 <1 0.14 <0.1 <0.01 <0.005 <0.1 180 <10 <10 1,160 <0.05 12N/36W-36L01 10/15/2014 910 34 58 3.7 120 43 180 380 0.950 <1 0.14 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,210 <0.05 12N/36W-36L01 7/30/2014 890 36 61 3.2 120 47 180 390 0.603 <1 0.12 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,220 <0.05 12N/36W-36L01 4/16/2014 910 36 46 2.6 76 27 180 440 0.77 <1 0.15 <0.1 <0.01 <0.005 <0.1 180 <10 <10 1,200 <0.05 12N/36W-36L01 1/16/2014 910 35 60 3.1 110 42 180 416 1.00 1.1 0.14 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,190 <0.05 12N/36W-36L01 10/16/2013 910 40 63 4.5 120 43 170 460 0.76 <1 0.13 <0.2 <0.01 <0.005 <0.2 170 <10 <10 1,210 <0.05 12N/36W-36L01 7/10/2013 910 39 54 3.2 120 42 175 430 0.78 <1 0.14 <0.1 <0.01 <0.005 <0.1 175 <10 <10 1,210 0.18 12N/36W-36L01 4/11/2013 890 38 59 3.6 110 43 180 420 0.82 <1 0.16 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,200 <0.05 12N/36W-36L01 1/15/2013 870 39 61 3.4 110 41 178 440 0.57 <1 0.15 <0.2 <0.01 <0.005 <0.2 178 <10 <10 1,190 0.13 12N/36W-36L01 10/31/2012 910 35 66 4.0 130 46 165 400 1.60 <1 0.16 0.2 <0.01 <0.005 <0.5 165 <10 <10 1,200 <0.05 12N/36W-36L01 7/24/2012 880 43 65 3.9 110 41 168 420 <0.05 <1 0.16 <0.1 <0.01 0.02 <0.1 168 <10 <10 1,190 0.19 12N/36W-36L01 4/18/2012 880 47 52 3.2 95 36 180 450 0.42 <1 0.12 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,190 <0.1 12N/36W-36L01 1/11/2012 790 41 64 4.1 120 44 170 380 1.30 <1 0.19 0.18 <0.02 <0.005 <0.2 170 <10 <10 1,190 <0.1 12N/36W-36L01 11/21/2011 910 39 55 3.5 110 40 180 380 0.37 <1 0.16 <0.2 <0.01 <0.005 <0.2 180 <10 <10 1,200 <0.1 12N/36W-36L01 7/25/2011 890 41 65 5.7 110 43 170 408.9 0.39 <1 0.15 <0.1 <0.01 <0.005 <0.1 170 <5 <5 1,200 0.024 12N/36W-36L01 4/21/2011 890 42 61 4.2 100 30 170 415 0.60 <1 0.19 0.07 <0.01 <0.005 <0.1 170 <2.0 <2.0 1,200 NA 12N/36W-36L01 1/24/2011 890 41 55 5.1 98 36 180 400 0.50 <1.0 0.20 0.15 <0.10 <0.005 <0.1 180 <2.0 <2.0 1,200 <0.1 12N/36W-36L01 10/21/2010 910 38 76 3.6 130 47 169 400 0.39 <1.0 0.10 <0.1 NA <0.005 <0.3 169 <10 <10 1,213 <0.1 12N/36W-36L01 7/27/2010 707 36 64.2 3.70 127 47.4 182 420 0.40 < 0.50 0.158 < 0.10 < 0.10 < 0.00500 0.11 182 < 1.0 < 1.0 1,100 < 0.100 12N/36W-36L01 4/26/2010 860 42 70.3 4.13 129 48.9 191 400 0.45 0.77 0.223 < 0.1 0.15 0.057 0.14 191 < 1.0 < 1.0 1,100 4.53 12N/36W-36L01 10/21/2009 856 38 72.0 4.64 131 48.2 192 420 0.49 0.84 0.150 0.12 < 0.10 0.0994 0.13 192 < 1.0 < 1.0 1,100 1.68 12N/36W-36L01 8/20/2009 890 39 78.0 4.21 138 48.1 184 390 0.49 0.56 NA < 0.10 < 0.10 0.185 0.14 184 < 1.0 < 1.0 1,200 2.03 12N/36W-36L01 5/11/2009 832 63 83.8 4.88 111 45.4 204 330 NA NA NA 0.12 NA 0.551 0.22 204 < 1.0 < 1.0 1,200 4.02 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 12N/36W-36L01 3/26/1996 882 35 66 4.8 124 47 233 408 0.4518 NA 0.24 NA NA NA NA NA NA NA NA NA 12N/36W-36L01 6/8/1976 936 38 72 3.5 130 48 223 423 0.1355 NA 0.15 0.7 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 12N/36W-36L02 10/6/2021 760 93 110 5.7 96 41 260 230 0.2 1.5 0.3 0.079 0.13 0.14 0.05 0.2 8.2 8.2 0.031 12N/36W-36L02 7/15/2021 820 98 100 5.4 90 39 260 240 0.024 2.1 0.31 0.1 0.13 0.14 0.59 260 8.2 8.2 1,190 0.11 12N/36W-36L02 4/8/2021 800 99 91 4.8 77 35 270 240 0.024 1.8 0.28 0.099 0.13 0.12 0.57 270 8.2 8.2 1,190 0.036 12N/36W-36L02 1/7/2021 860 98 110 6.1 100 46 260 240 0.024 1.8 0.34 0.096 0.18 0.16 0.43 260 8.2 8.2 1,180 0.26 12N/36W-36L02 10/11/2020 870 98 98 5.4 95.0 40 250 250 0 1.70 0.29 0.084 0.130 0.13 0.62 250 0 0 1,190 0.0 12N/36W-36L02 7/8/2020 930 100 110 5.8 97.0 42 260 240 0 1.80 0.31 0.093 0.130 0.14 0.65 260 8 8 1,210 0.1 12N/36W-36L02 4/22/2020 770 100 110 6.0 97.0 40 270 230 0 2.10 0.33 0.069 0.120 0.15 0.67 270 0 0 1,190 0.6 12N/36W-36L02 1/15/2020 860 100 110 6.2 100.0 43 260 240 0 1.90 0.35 0.085 0.160 0.16 0.35 260 0 0 1,160 0.2 12N/36W-36L02 10/15/2019 780 99 120 6.3 100.0 41 270 240 0 2.00 0.35 0.078 0.130 0.17 0.66 270 0 0 1,210 0.5 12N/36W-36L02 7/10/2019 660 99 100 5.9 94.0 44 260 240 0 1.90 0.33 0.096 0.150 0.15 0.60 260 0 0 1,200 0.1 12N/36W-36L02 4/10/2019 820 100 100 5.7 96 43 270 240 ND 2.0 0.32 0.094 0.13 0.15 0.5 270 ND ND 1,220 0.17 12N/36W-36L02 1/9/2019 820 100 110 6.1 99 42 270 240 ND 2.2 0.33 0.099 0.14 0.15 0.5 270 ND ND 1220 0.42 12N/36W-36L02 10/10/2018 840 99 110 7.2 100 46 260 240 ND 2 0.33 0.06 0.13 0.19 0.40 260 ND ND 1,200 5.2 12N/36W-36L02 7/10/2018 800 100 99 5.6 89 41 260 240 ND 2.0 0.33 0.14 0.14 0.14 0.62 260 ND ND 1,260 0.9 12N/36W-36L02 4/11/2018 850 100 110 6.0 96 42 260 230 0.044 1.8 0.32 0.097 0.16 0.17 0.66 260 ND ND 1,210 2.1 12N/36W-36L02 1/11/2018 800 100 110 6.3 97 44 260 230 ND 2.0 0.38 0.12 0.17 0.17 0.65 260 ND ND 1,190 0.51 12N/36W-36L02 10/11/2017 830 100 100 5.9 97 44 280 230 ND 1.8 0.36 0.087 0.13 0.16 0.66 280 ND ND 1220 0.41 12N/36W-36L02 7/12/2017 940 97 100 6.1 98 45 250 230 ND 2.2 0.32 0.096 0.13 0.16 0.59 250 ND ND 1,200 0.75 12N/36W-36L02 4/12/2017 780 97 120 6.7 98 43 250 240 ND 2.2 0.35 0.082 0.14 0.16 0.51 250 ND ND 1,190 0.77 12N/36W-36L02 1/12/2017 810 94 120 6.6 110 48 270 240 ND 2 0.36 0.08 0.19 0.19 0.53 270 ND ND 1,200 1.1 12N/36W-36L02 10/12/2016 820 99 120 6.6 110 50 270 240 ND 2 0.35 0.084 0.14 0.17 0.58 270 ND ND 1230 0.1 12N/36W-36L02 7/19/2016 820 97 110 6.2 95 45 270 240 <0.022 2 0.33 0.081 0.1 0.15 0.65 270 <8.2 <0.82 1,220 0.14 12N/36W-36L02 4/12/2016 800 96 100 6 94 44 270 230 <0.022 1.8 0.32 0.12 0.12 0.14 0.81 270 <8.2 <0.82 1,240 0.37 12N/36W-36L02 1/14/2016 860 96 110 6.4 99 47 260 230 <0.018 1.6 0.34 0.10 0.078 0.17 0.65 260 <8.2 <8.2 1,240 1.9 12N/36W-36L02 10/15/2015 800 89 96 6.0 91 0.15 266 230 <0.05 2.2 0.32 0.22 0.098 0.15 0.37 266 <10 <10 1,220 0.32 12N/36W-36L02 7/16/2015 840 97 120 5.9 110 46 260 240 <0.05 2.44 0.34 0.11 0.11 0.15 0.59 260 <10 <10 1,230 0.16 12N/36W-36L02 4/14/2015 800 98 88 5.3 83 39 270 240 <0.05 2.9 0.33 0.104 0.089 0.13 0.380 270 <10 <10 1,180 0.40 12N/36W-36L02 1/13/2015 820 100 91 5.5 86 39 250 250 <0.05 2.2 0.31 0.105 0.09 0.13 0.322 250 <10 <10 1,190 0.077 12N/36W-36L02 10/15/2014 800 88 96 6.4 91 40 260 210 <0.05 2.1 0.32 <0.1 0.092 0.14 0.358 260 <10 <10 1,230 0.12 12N/36W-36L02 7/30/2014 800 98 99 5.8 88 39 280 210 <0.05 2.4 0.28 0.11 0.09 0.14 0.19 280 <10 <10 1,240 0.27 12N/36W-36L02 4/16/2014 820 95 89 6.3 73 31 280 210 <0.05 2.3 0.31 <0.1 0.09 0.13 0.35 280 <10 <10 1,240 0.22 12N/36W-36L02 1/16/2014 800 100 87 5 76 33 270 230 <0.05 2.3 0.31 0.23 0.09 0.14 0.44 270 <10 <10 1,230 0.41 12N/36W-36L02 10/16/2013 810 90 110 6.4 91 40 260 240 <0.05 2.2 0.32 <0.1 0.1 0.15 0.32 260 <10 <10 1,220 0.54 12N/36W-36L02 7/10/2013 790 105 94 5.8 88 38 260 240 <0.05 2.5 0.34 <0.1 0.08 0.13 0.11 260 <10 <10 1,240 0.31 12N/36W-36L02 4/11/2013 830 100 99 6.2 83 37 260 220 <0.05 2.2 0.35 <0.1 0.098 0.14 0.45 260 <10 <10 1,240 0.60 12N/36W-36L02 1/15/2013 770 110 110 6.7 84 38 265 220 <0.05 2.8 0.36 <0.1 0.02 0.14 0.20 265 <10 <10 1,240 0.61 12N/36W-36L02 10/31/2012 800 100 120 7.3 90 39 265 200 <0.1 2.4 0.4 0.34 0.12 0.14 0.34 265 <10 <10 1,250 0.30 12N/36W-36L02 7/24/2012 800 134 125 7.4 83 35 277 200 <0.05 2.3 0.42 0.13 0.12 0.14 0.31 277 <10 <10 1,250 0.52 12N/36W-36L02 4/18/2012 770 130 95 6.2 75 33 270 210 0.42 4 0.35 0.36 0.12 0.13 <0.2 270 <10 <10 1,250 0.77 12N/36W-36L02 1/11/2012 900 122 110 7.2 95 37 290 170 <0.1 4.8 0.48 0.28 <0.02 0.17 0.45 290 <10 <10 1,250 1.80 12N/36W-36L02 11/21/2011 780 130 95 6.1 77 33 270 160 <0.1 <1 0.4 <0.2 <0.01 0.13 0.45 270 <10 <10 1,240 0.40 12N/36W-36L02 7/25/2011 790 129 110 9.1 74 33 280 177 <0.05 2.3 0.36 0.12 0.14 0.13 0.51 280 <5 <5 1,280 2.30 12N/36W-36L02 4/21/2011 770 120 90 5.3 86 26 280 206 <0.05 2.3 0.24 0.26 0.14 0.004 0.57 280 <2.0 <2.0 1,270 NA 12N/36W-36L02 1/24/2011 800 120 95 7.6 75 30 300 190 <0.05 2.3 0.39 0.16 1.31 0.13 0.53 300 <2.0 <2.0 1,270 1.40 12N/36W-36L02 10/21/2010 770 120 130 7.6 89 44 275 160 <0.1 3.4 0.48 <0.1 NA 0.15 0.54 275 <10 <10 1,293 0.12 12N/36W-36L02 7/27/2010 737 110 121 7.81 91.1 38.9 268 190 < 0.10 < 0.50 0.427 0.10 0.77 0.180 0.80 268 < 1.0 < 1.0 1,200 0.845 12N/36W-36L02 4/26/2010 720 100 116 6.88 85.4 32.4 215 210 1.5 0.77 0.382 0.2 0.28 0.167 0.7 215 < 1.0 < 1.0 1,100 3.870 12N/36W-36L02 10/21/2009 638 99 113 6.15 81.6 23.0 172 200 < 0.10 3.2 0.268 0.33 57 0.128 0.61 172 < 1.0 < 1.0 940 0.255 12N/36W-36L02 8/20/2009 785 100 131 6.66 89.8 36.6 290 190 < 0.10 3.8 NA 0.15 0.27 0.307 0.75 290 < 1.0 < 1.0 1,200 0.830 12N/36W-36L02 5/11/2009 775 120 132 7.24 84 39.7 294 180 NA NA NA 0.18 NA 0.426 0.78 294 < 1.0 < 1.0 1,300 0.958 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 12N/36W-36L02 3/26/1996 772 127 130 8.7 86 36 390 148 0.0452 NA 0.5 NA NA NA NA NA NA NA NA NA 12N/36W-36L02 6/8/1976 820 126 118 6.6 94 44 393 184 0 NA NA 0.5 NA NA NA NA NA NA NA NA \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022 Appendix A: NCMA Sentry Wells Water Quality Data Well Date TDS Chloride Sodium Potassium Calcium Magnesium Bicarbonate as CaCO3 Sulfate Nitrate (as N) Total Kjeldahl Nitrogen Boron Fluoride Iodide Manganese Bromide Total Alkalinity as CaCO3 Carbonate as CaCO3 Hydroxide as CaCO3 Specific Conductivity Iron mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l umhos/cm mg/l 12N/35W-32C03 10/7/2021 320 76 68 2.6 15 6.5 56 32 8.4 0.2 0.078 0.053 0.1 0.01 0.18 56 4.1 4.1 0.054 12N/35W-32C03 7/15/2021 360 77 66 2.6 15 6.7 56 32 8.2 0.091 0.066 0.047 0.014 0.004 0.2 56 4.1 4.1 503 0.11 12N/35W-32C03 4/6/2021 330 77 69 2.6 15 7.2 54 31 8.2 0.098 0.088 0.045 0.005 0.004 0.21 54 4.1 4.1 0.03 12N/35W-32C03 1/6/2021 310 71 65 2.7 14 6.5 56 29 7.9 0.27 0.11 0.041 0.005 0.004 0.17 56 4.1 4.1 471 0.03 12N/35W-32C03 10/7/2020 350 64 63 2.5 13.0 6 54 26 8 0.00 0.11 0.066 0.000 0.00 0.18 54 0 0 430 0.0 12N/35W-32C03 7/7/2020 290 62 66 2.7 13.0 6 49 25 9 0.20 0.11 0.049 0.100 0.01 0.18 49 4 4 422 0.1 12N/35W-32C03 4/21/2020 300 62 63 2.6 13.0 6 54 27 8 0.95 0.10 0.051 0.000 0.00 0.16 54 0 0 446 0.0 12N/35W-32C03 1/14/2020 290 63 62 2.6 13.0 6 50 27 9 0.00 0.09 0.052 0.000 0.00 0.16 50 0 0 410 0.1 12N/35W-32C03 10/14/2019 190 60 63 2.6 12.0 6 48 25 9 0.00 0.10 0.043 0.000 0.00 0.18 48 0 0 422 0.1 12N/35W-32C03 7/9/2019 320 60 64 2.5 13.0 6 51 25 8 0.00 0.10 0.053 0.000 0.00 0.15 51 0 0 426 0.0 12N/35W-32C03 4/9/2019 320 64 60 2.7 14 6.2 54 28 8.4 0.09 0.10 0.06 ND 0.01 0.16 54 ND ND 446 0.350 12N/35W-32C03 1/9/2019 290 64 70 2.8 14 6.2 53 29 8.6 0.19 0.12 0.051 ND ND 0.18 53 ND ND 440 0.038 12N/35W-32C03 10/9/2018 280 62 64 2.8 14 6.2 50 28 8.4 0.07 0.093 0.031 ND ND 0.13 50 ND ND 446 0.087 12N/35W-32C03 7/10/2018 300 64 60 2.5 13 5.8 54 27 8.5 ND 0.089 0.11 ND ND 0.18 54 ND ND 458 0.047 12N/35W-32C03 4/10/2018 320 66 62 2.6 13 6.1 51 30 8.4 ND 0.087 0.047 ND ND 0.23 51 ND ND 450 0.26 12N/35W-32C03 1/10/2018 320 62 67 2.7 14 6.4 50 27 8.2 0.11 0.09 0.073 ND ND 0.20 50 ND ND 438 0.21 12N/35W-32C03 10/11/2017 320 64 63 2.8 14 6.5 53 28 8.4 0.11 0.11 0.04 ND 0.01 0.17 53 ND ND 445 0.6 12N/35W-32C03 7/11/2017 370 63 71 2.9 16 7 55 28 7.9 ND 0.094 0.035 ND 0.0062 0.21 55 ND ND 450 0.3 12N/35W-32C03 4/11/2017 300 65 66 2.8 14 6.6 52 28 8 ND 0.082 0.038 ND ND 0.19 52 ND ND 442 0.077 12N/35W-32C03 1/13/2017 300 67 72 3 16 7.1 53 29 8.2 ND 0.093 0.033 ND ND 0.21 53 ND ND 449 0.072 12N/35W-32C03 10/13/2016 310 64 68 2.9 14 6.5 53 25 8.1 0.12 0.088 0.08 ND ND 0.18 53 ND ND 433 ND 12N/35W-32C03 7/20/2016 300 66 65 2.8 13 6.4 57 26 7.9064 <0.08 0.087 0.03 <0.010 <0.0040 0.16 57 <4.1 <4.1 450 0.039 12N/35W-32C03 4/13/2016 290 65 66 2.8 14 6.5 51 26 8.1323 0.086 0.083 0.039 <0.010 <0.0040 0.22 51 <4.1 <4.1 438 0.08 12N/35W-32C03 1/14/2016 290 69 68 2.9 14 6.3 50 27 8.6 <0.08 0.094 0.083 <0.010 <0.0040 0.16 50 <4.1 <4.1 430 0.079 12N/35W-32C03 10/14/2015 280 61 57 2.6 12 5.8 51 28 8.4 <1 0.090 <0.10 <0.01 <0.005 <0.10 51 <10 <10 430 0.33 12N/35W-32C03 7/14/2015 280 64 67 2.7 14 6.2 50 30 8.0 <1 0.10 <0.1 <0.01 <0.005 <0.1 50 <10 <10 440 0.22 12N/35W-32C03 4/15/2015 280 62 52 2.4 12 5.4 51 30 7.8 <1 0.081 <0.1 <0.01 <0.005 0.11 51 <10 <10 420 0.11 12N/35W-32C03 1/14/2015 290 63 56 2.3 13 5.8 51 30 8.2 <1 0.077 <0.1 <0.01 <0.005 0.1 51 <10 <10 420 0.38 12N/35W-32C03 10/16/2014 270 55 54 2.7 13 5.7 51 26 7.3 0.3 0.069 <0.1 <0.01 0.005 <0.1 51 <10 <10 430 0.35 12N/35W-32C03 7/30/2014 280 60 58 1.9 14 6.5 60 29 7.3 <1 <0.1 <0.1 <0.01 <0.005 <0.1 60 17 <10 450 0.16 12N/35W-32C03 4/15/2014 270 57 55 2.2 12 5 54 29 7.1 <1 0.096 <0.1 <0.01 <0.005 0.11 54 <10 <10 430 0.21 12N/35W-32C03 1/16/2014 300 62 57 2.8 14 6.3 54 35 8.1 8.2 <0.1 <0.1 <0.01 0.008 0.12 54 <10 <10 450 0.47 12N/35W-32C03 10/16/2013 310 58 62 2.9 15 6.4 54 38 7.5 <1 0.06 <0.1 <0.01 0.009 0.1 54 <10 <10 450 0.21 12N/35W-32C03 7/11/2013 290 60 45 2.4 14 5.9 61 30 7.4 <1 0.071 <0.1 <0.01 0.006 <0.1 61 <10 <10 440 0.17 12N/35W-32C03 4/12/2013 330 58 55 2.9 16 6.6 60 35 7.5 <1 0.091 <0.1 <0.01 0.019 0.1 60 <10 <10 460 0.49 12N/35W-32C03 1/15/2013 290 62 57 2.8 15 6.3 55 38 8.3 <1 0.089 <0.1 <0.01 0.01 <0.1 55 <10 <10 470 0.23 12N/35W-32C03 10/30/2012 330 57 60 3.3 19 7.5 60 36 7.8 <1 0.09 <0.1 <0.01 0.033 <0.1 60 <10 <10 470 1.9 12N/35W-32C03 7/25/2012 330 67 61 3.3 17 6.4 59 35 8.2 <1 <0.1 <0.1 <0.01 0.068 <0.1 59 <10 <10 460 0.49 12N/35W-32C03 4/19/2012 370 74 52 2.9 30 12 120 58 5 <1 0.17 0.2 <0.01 0.056 <0.2 120 <10 <10 580 1.3 \\GSIData\Projects\Portland\672-Northern Cities Management Area\008-2021 Annual Report\03 Annual Report\0 Admin Draft\Appendicies\Tables\03012022_NCMA_WQ_master.xlsx 3/2/2022