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September 27,2000 <br /> Job Number: LGOO-312 <br /> Page 4 <br /> information collected for the site and nearby area. <br /> Table: Summary of Available Ground Water Information <br /> Date,Source Groundwater Notes <br /> Depth <br /> September 15,2000,two(2) 10-fl soil borings, Not encountered See plate 8. <br /> Neil O.Anderson&Associates,Inc. <br /> Water sample from 10623 E.Hwy 120, Unknown Water quality test Nitrate-45.6 mg/L <br /> _ Manteca,CA as NO3( 10.1 mg/l as N) <br /> fC } Water quality test DBCP-ND <br /> Nitrate test at 11011 E.Hwy. 120, S. San Unknown 1-22-99,47 mg/L-NO3( 10.4 mg/1-N) �� s <br /> Joaquin Irrigation District Building. Notice 2-2-99,45 mg;/L-NO,( 10.0 mg/1-N,� 00 <br /> posted at inside drinking water fountain. 4-29-99,48 mg/L-NO3( 10.6 mg/1-N) D <br /> Spring 1998, San Joaquin County Flood About 21 to 22 feet Gradient about 5.5 feet/mile,flowing �f 5�c1 <br /> Control and Water Conservation District in depth. north-northwest. oC , <br /> map. <br /> i J <br /> l <br /> 998, San Joaquin County Flood Control About 20 to 21 Gradient about 6.25 feet/mile, <br /> ater Conservation District.l feet in �n%northwest. <br /> Note: ND=Non-Detectable(or not found at detectable limits). <br /> The depth to ground water at the site was found to be approximately 20 to 22 feet for <br /> 1998 (see Plate 2 and Plate 3). The ground water flow direction in 1998 was toward the <br /> northwest and north-northwest with a gradient ranging between 5 to 6 feet per mile. <br /> A request was submitted to the California Department of Water Resources(DWR)to <br /> obtain details of the existing water well, however,Ms. Ann Roth(DWR) indicated that no <br /> information was available. A water sample was obtained from this well on September 1, 2000 and <br /> sent to FGL Environmental Laboratory for testing. The samples were tested for the presence of <br /> dibromochloropropane(DBCP) and Nitrate(NO3) per County requirements. <br /> The test results indicated that DBCP was non-detectable(ND)and nitrate as NO3 was <br /> found at 45.6 mg/l ( 10.1 mg/1-N). The result of the nitrate test indicates the ground water is <br /> slightly above the maximum contaminate level set by the United States Environmental Protection <br /> Agency of 45 mg/1-NO3 for nitrate(or 10 mg/1 as Nitrate N). <br /> e vE�a i <br /> s <br /> z <br /> e • <br /> Assoc. <br /> r <br />