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KLE/NFELOEF7 <br /> M'9tlthopk.Mi9tll b/utlwu. <br /> Table 4-3 (continued) <br /> Regional Geology and Hydrogeology <br /> Physical Parameter Information/Comments <br /> REGIONAL The majority of the groundwater in the basin is characterized by calcium- <br /> GROUNDWATER magnesium bicarbonate or calcium-sodium bicarbonate types. <br /> QUALITY PROBLEMS Bicarbonate is the predominant anion in the eastern part of the basin. <br /> Large areas of chloride type water occur along the western margin of the <br /> subbasin along the San Joaquin River. As a result of declining water <br /> levels, poor quality water has been moving east along a 16-mile front on <br /> the east side of the Delta. The degradation was particularly evident in the <br /> Stockton area where the saline front was moving eastward at a rate of <br /> 140 to 150 feet per year. Data from 1980 and 1996 indicate that the saline <br /> front has continued to migrate eastward up to about one mile beyond its <br /> 1963 extent. Large areas of elevated nitrate in groundwater exist within <br /> the subbasin located southeast of Lodi and south of Stockton and east of <br /> Manteca extending towards the San Joaquin — Stanislaus County line <br /> (CDWR, 2006). <br /> WATER SUPPLY Water is supplied to the Site by Stockton City Water. <br /> FLOOD ZONE According to The EDR Radius MapTm Report with GeoCheck®, the Site is <br /> DESIGNATION not located within a 100-year or 500-year flood zone(EDR, 2016a). <br /> Groundwater flow direction is based on regional information sources. Site-specific conditions may vary due to <br /> a variety of factors including geologic anomalies, utilities, nearby pumping wells if present), and other factors. <br /> 4.5 USER PROVIDED INFORMATION <br /> According to the Client, the purpose for performing this Phase I ESA is to evaluate the potential <br /> for RECs at the Site prior to proposed lot line changes and proposed improvements to an <br /> existing truck shop facility. Information regarding the current owners/occupants of the Site is <br /> summarized in Table 4-4. <br /> Table 4-4 <br /> Owner / Occupant Information <br /> Entity Name <br /> OWNER According to EDR (http:/Iedrnet.com/), the Site parcels are owned by <br /> Howard Land Co. LP. <br /> OCCUPANT(S) Delta Truck Center (repairs diesel engines) occupies Parcel 1 of the <br /> Site. Parcel 3 is currently unoccupied. <br /> Summaries of interviews of key individuals with knowledge of the Site ("Key Site Managers") <br /> are provided in Section 7. The following sections present information provided to Kleinfelder by <br /> the Client. <br /> 20172543.001A/ST016R49461 Page 26 of 54 November 2, 2016 <br /> ©2016 Kleinfelder ew Aleinfelder.com <br />