Arroyo Grande City Council
August 9, 2022

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

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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
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AFY - Acre-feet per year
SWP - California State Water Project

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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.

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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

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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.

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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 courtaccepted 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

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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/L
P:\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/L
Well 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

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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.”.

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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.

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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:

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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 shortterm 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

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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.

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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

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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.

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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).

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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.

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 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.

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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

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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

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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.

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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.

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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 Statemandated 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:

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 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 waterwise 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 waterwise 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-perflush or higher toilet replaced with a 1.28-gallon-per-flush or lower toilet.  Water Conservation Website.

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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

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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.

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 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:

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 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.

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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.

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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.

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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.

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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.

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Geological Survey Water-Supply Paper 1000, 176 p.

APPENDIX A
NCMA Sentry Well Water Level and Water Quality Data

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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