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April 25,-2001 " <br /> Job Number. LGOI-098 ' <br /> Page 4 <br /> V.' GROUND WATER <br /> The San Joaquin County.Flood Control and Water`Conservation District ground-water , <br /> depth and elevation-maps indicate the ground water levels most parts of the.San Joaquin County. <br /> Unfortunately,.these maps do not provide-coverage for the western county area. The following <br /> .table summarizes all the available ground water information collected for the;site.and,nearby <br /> area. <br /> Table 2. <br /> Summary of Available Ground Water Information. <br /> Date Source Groundwater De th . <br /> p Notes77 <br /> March 30,2001;four(4) 10-ft soil borings, 6.5 feet. Shallow ground water encountered <br /> Neil O.Anderson&Associates,Inc. in each of the four(4)borings. <br /> Water sample from&well located at,5225 . ' Unknown. ,:.Water-quality test Nitrate-79 mg/L <br /> W.California,Tracy'California. •as NO3( I7:6 mg/l as N). <br /> 7J 'Water quality test DBCP-ND. <br /> Fall 1998,San Joaquin County Flood -Not available.' No ground water information from <br /> Control and Water.Conservation District map in this part of the County. <br /> map. <br /> Spring 1999, San Joaquin County Flood Not available. No ground water information from <br /> Control and Watcf Conservation District.. , map in this part of the County. <br /> Note:ND=Non-Detectable(or not found at detectable limits). <br /> -Thedepth to ground.water at the site was measured in.each of the four 4 borings and <br /> p . ( } g <br /> was found.to be at a depth of 6.5 feet."The'ground-water gradient and ground-water flow <br /> direction bear-the site is not known due to lack of County ground water information in the area. . <br /> "A water sample was obtained from d.nearby water well located at 5225 W. California <br /> Avenue on March 30;:2001,, The sample was sent to FGL Environmental Laboratory for testing <br /> on the same day. The samples were'tested for the presence of'dibromochloropropane(DBCP) <br /> and Nitrate(NO3) per County`requirements. <br /> San Joaquin County Flood Control and Water Conservation District. Depth to ground water and ground- <br /> water elevation maps Fall 1998,abd Spring 1999. Published biannually,Scale: 1 inch=2 miles. <br /> . h <br /> c <br /> O ` <br /> r <br />