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GROUNDWATER ASSESSMENT REPORT <br /> i <br /> . V. REGIONAL GROUNDWATER CONDITIONS <br /> ESA reviewed available regional groundwater data to determine location of nearby groundwater <br /> wells and estimate the regional groundwater flow direction This information is summarized <br /> below Based upon surface topography and the location of the Calaveras River,estimated <br /> groundwater flow of the water table varies seasonally,flowing towards and away from the <br /> Calaveras River This estunate was verified by groundwater flow data obtained during the recent <br /> groundwater monitoring and sampling effort Regional flow of groundwater, as determined by <br /> groundwater wells penetrating deeper water-bearing strata,can vary in this area but is generally <br /> easterly,towards a groundwater depression beneath the City of Stockton 2 <br /> ESA conducted a file review at the SJCEHD to obtain information regarding local groundwater <br /> monitoring wells and to confirm shallow groundwater flow direction The results of this review <br /> is summarized below in Table 8, and indicate that the water table varies in depth between 15 to <br /> 32 feet bgs, with groundwater generally flowing in the northeasterly direction <br /> TABLES <br /> GROUNDWATER MONITORING WELLS IN THE <br /> VICINITY OF THE UOP PHYSICAL PLANT <br /> ILocation Relative to Groundwater Depth to <br /> Site UOP Physical Plant Flow Direction Groundwater <br /> California Fuels Carlock Station 3,000 feet southeast East/Northeast 15 to 30 feet bgs <br /> 2402 Pacific Avenue <br /> 7-Elven Site No 17334 4,000 feet northwest North 18 feet bgs <br /> 4501 North Pershing <br /> Shell Service Station 4,000 feet northwest Northeast 15 to 32 feet bgs <br /> 4445 North Pershing <br /> Former Gas Station 4,000 feet northwest Northeast 16 to 30 feet bgs <br /> 4555 North Pershing <br /> Pacific Car Wash 3,800 feet northeast Northeast 22 to 30 feet bgs <br /> 4405 Pacific Avenue <br /> Thirteen municipal groundwater wells were identified from 2,000 feet to 5,600 feet from the site, <br /> as noted on Table 9 and Figure 10 Two of the wells are owned by UOP, the remaining i 1 wells <br /> are owned by the California Water Service The City of Stockton, Department of Municipal <br /> -=- - - —=---,Utilities does not have any wells within one mile of the-site(Ed=Formosa;City of Stockton;-- <br /> 2000) <br /> tockton;_ -- <br /> 2000) <br /> 2 San Joaquin County Flood Control and Conservation District,Groundwater Report,Spring and Fa11 1998 <br /> Groundwater Assessment Report 22 ESA!200252 <br /> ' September 2003 <br />