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July 17,2002 <br /> Job Number: LG02-136 <br /> Page 4 <br /> V. GROUND WATER <br /> Currently, there are three(3)operating water wells located on the property. The wells are <br /> located on the northwest portion of the property about 80 to 90 west of Building 5 (Plate 1). The <br /> wells are located about 40 to 50 feet apart in a north south orientation. The north and south most <br /> wells are used for fire safety and industrial water. These wells are tied together into a common <br /> service pipe. The center well is independent of the other two wells and is used for domestic <br /> purposes. <br /> The San Joaquin County Flood Control and Water Conservation District ground-water <br /> depth and elevation maps were reviewed to determine the ground water levels near the site.' The <br /> Fall 1998 and Spring 1999 maps are the most current maps available from the county. The depth <br /> to ground water below the site during the period of Fall 1998 and Spring 1999 was <br /> approximately 100 feet. The gradient and flow direction was southeast between 7.7 to 11 <br /> feet/mile. The following table summarizes all the available ground water information collected <br /> for the site and nearby area. <br /> Table 3. <br /> Summary of Available Ground Water Information. <br /> Date,Source Groundwater Depth Notes <br /> Two borings: 3-feet and 9-feet deep. Ground water not <br /> Neil O.Anderson&Associates,Inc. encountered. <br /> April 18,2002. <br /> Water sample obtained on March 12, Unknown Water tested for Suitability and Nitrate and <br /> 2002 from the a combed(2 wells)flow TKN.TKN: 1.52 mg/L-N,Nitrate: 3,679 <br /> of the north and south well(fire ug/L-N,MCL 1000 mg/L-N <br /> sae ty/industriaUag wells). <br /> Water sample obtained on March 12, Unknown Water tested for Suitability and Nitrate, <br /> 2002 from the domestic water supply TKN,and DBCP.TKN: 1.50 mg/L-N <br /> well(center well), located at 12470 Nitrate:2,483 ug/L-N,MCL 10,000 ug/L-N <br /> Locke Road,Lockeford,California. DBCP:Not detected. <br /> — <br /> San Joaquin County Flood Control and Water Conservation District. Depth to ground water and ground- <br /> water elevation maps Fall 1998 and Spring 1999. Published biannually,Scale: I inch=2 miles. <br /> — <br /> 'pERj�y <br />