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Table 3.2 <br /> Historical and Current Groundwater Analytical Results <br /> San Joaquin County Human Services Agency Building <br /> Stockton,California <br /> Groundwater ---------F- Anal <br /> roundwaterAnal a Concentration l. <br /> Well No. Sample Date Elevation feat Benzene Toluene Eth (benzene X lene(Total) TPH TPH-e Total Lead <br /> MW-9 8/30/1996 -25.55 NO 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50 <br /> 12/3/1996 -25.21 NO 0.50 NO 0.50) NO 0.50 NO 2.0 NO 50 - <br /> 2/24/1997 -21.95 NO 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50) <br /> 5/20/1997 -21.13 NO 0.50 NO 0.50 0.6 NO 2.0 NO 50 <br /> 9/19/1997 -21.85 NO 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50 <br /> 12/15/1997 -22.11 NO 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50 - - <br /> 3/17/1998 -18.54 NO 0.50 ND 0.50 NO 0.50 NO 2.0 NO 50 <br /> 6/17/1998 -15.96 NO 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50 <br /> 9/17/1998 -16.48 ND 0.50 NO 0.50 NO 0.50 NO 2.0 NO 50 <br /> 12/10/1998 -16.21ND 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 3/22/1999 -15.14 <br /> NO 0.50 ND 0.50 ND 0.50 ND 0.50 ND 50 <br /> 5/18/1999 -14.73 <br /> NO 0.50 ND 0.50 ND 0.50 ND 0.50 ND 50 <br /> 8/10/1999 -15.20 <br /> NO 0.50 ND 0.50 ND 0.50 ND 0.50 ND 50 <br /> 11/15/1999 -15.97 <br /> NO 0.50 ND 0.50 ND 0.50 ND 0.50 ND 50 <br /> 3/2/2000 -15.19 <br /> NO 0.50 ND 0.50 ND 0.50 ND 0.50 ND 50 <br /> 5/10/2000 -14.28 <br /> NO 0.50 ND 0.50 ND 0.50 ND 1.50 ND 50 - <br /> 8/10/2000 -14.83 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 - <br /> 11/1/2000 -15.56 NO 0.50 ND 0.50 NO 0.50 NO 0.50 NO 50 <br /> 2/27/2001 -15.24 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 5/16/2001 -14.99 NO 0.50 NO(0.50) ND 0.50 NO 0.50 NO 50 - <br /> 2/5/2002 -15.84 _ NO(0.50) NO(0.50) NO 0.50) NO 0.50) NO 50 - <br /> 4/17/2002 -16.33 NO 0.50 NO(0.50) NO 0.50 NO 0.50 NO 50 - <br /> 6/25/2002 -16.74 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 - <br /> 9/17/2002 -17.93 NO 0.50 ND 0.50 NO 0.50 0.74 NO 50 <br /> 12/10/2002 -18.61 ND 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 6/10/2003 -18.11 ND 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 - - <br /> 10/6/2003 -19.29 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 1/13/2004 -18.66 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 3/31/2004 -18.64 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 6/24/2004 -19.14 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 9/15/2004 -20.10 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 12/16/2004 -20.66 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 3/2212005 -19.01 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 6/29/2005 -17.90 NO 0.50 NO 0.50 NO 0.50 NO 0.50 NO 50 <br /> 9/29/2005 -18.76 ND 0.50 ND 0.50 NO 0.50 ND 0.50 NO 50 <br /> 31 1' 12/13/2005 -19.17 ND 0.50 ND 6.50 ND 0.50 NO 0.50 NO 50 <br /> Table 3-2 Notes: <br /> J=Detected below the detection limit TPH-g=Total petroleum hydrocarbons as gasoline <br /> pg/l-=micrograms per liter --=Sample not analyzed for constituent <br /> NO(0.50)=Analyte not detected.Detection limit indicated in parentheses. ' =Top of casing not surveyed to established benchmark <br /> NM=Not measured 3=Well abandoned <br /> TPH-e=Total petroleum hydrocarbons extractable 3=Bottom 8 feet of well has collapsed <br /> 6 of <br />