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DWR ground water contour maps support ground water flow to the southeast. <br /> Regional ground water flow is influenced by the historic ground water depression <br /> northeast of Stockton. Refer to Figure 1. <br /> SITE SPECIFIC HYDROGEOLOGY <br /> The Woods Dairy site lies in the East San Joaquin subbasin of the San Joaquin <br /> hydrologic region. Area knowledge and DWR hydrographs indicate that ground water <br /> may exist within sand units found less than 40 feet bgs. A 7.5' scale topography map <br /> and DWR ground surface elevations were used to determine a ground surface elevation <br /> of 20 to 25 ft above mean sea elevation at the dairy site. First encountered ground water <br /> is anticipated to be found unconfined within isolated perched ground water horizons or <br /> in regionally continuous sands. Multi-year fluctuations are anticipated to be over 10 <br /> feet as depicted on the DWR hydrograph below. The DWR hydrograph well location is <br /> given on Figure 1. The focus of the investigation is to identify a continuous <br /> "monitorable" uppermost aquifer and complete wells with significant screen for the <br /> anticipated ground water fluctuation and preferred sand borehole geology. <br /> Groundwater Levels, 03N06E07H003M <br /> San Joaquin Valley (Eastern San Joaquin Co.) <br /> 30 " r' <br /> r <br /> G.S. ALew on _23----- --- --- ---- ------------ - <br /> 20 <br /> -- -------- ---20 }� <br /> m 10 <br /> U <br /> m <br /> L 10 <br /> L <br /> y <br /> L 20 " <br /> v s <br /> m 0 <br /> 30 L <br /> O <br /> d <br /> > 40 <br /> m <br /> w -20 .L <br /> a <br /> m <br /> Soirc De artme t of Water,Resous <br /> 50 0 <br /> -30 <br /> 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 <br /> Calendar Year ° Questionable Measurement <br /> CONCEPTUAL GROUND WATER MODEL <br /> Woods Dairy March 1,2010 <br /> 103-27 Monitoring Well Installation Plan 11 Revision 1 <br />