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Table 4 <br /> Groundwater Monitoring Results-RTEX/TPH as Gasoline Analyses <br /> Del Monte Disco Property <br /> Stockton,California <br /> Concentration(n ) <br /> Sample TPH <br /> well Date Benzene 'Toluene Xylenes Ethyl benzene Gasoline Dilution Lead <br /> TCLP 500 - - - <br /> MCL 1 1,000 1,750 680 50 <br /> -DIS-3 07!2611991 <br /> 09/04/1991 130. t6i? 20 7SUr` <br /> 0613011992 <0.5 L <0.5 <br /> 10!01/1992 <0-5 <0.5 <0.5 <0.5 <50 NS <br /> 01/21/1993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 03129/1993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 07/20/1993 <0.5 <0.5 <0.5 <0.5 <50 <0•5 ,- <br /> 09/30/1993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 01/12/1994 <05 <0.5 <0.5 <0.5 <50 NS <br /> 04/1411994 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 07/20/1994 <0.5 <0.5 <0.5 <0.5 <50 <br /> 10/27/1994 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 03/03/1995 <0.3 <0.3 <0.3 <0.3 <50 NS <br /> 06/1911995 <0.3 <50 NS <br /> 10118/1995 <0.3 <0.3 <0.3 <0.3 <50 11 NS <br /> 02!13/1996 <0.3 <0.3 <0.3 <0.3 <50 l:l NS <br /> 06/06/1996 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 08115/1996 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 12120/96'" <0.5 <0.5 <0.5 1-1 NS <br /> 12/2011996 <0.3 <0.3 <03 <0.3 <50 1:1 NS _ <br /> 4/17/97 <0.3 <0.3 7= <0.3 <50 LI NS <br /> 12/22/1997 <03 <0.3 <0.3 <0.3 <50 2:1 NS <br /> 04/1611999 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 08/1211997 ND ND ND ND ND NS <br /> 07123/1 99 8 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 11/11/1998 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 02/10/1999 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 07/16/1999 <0.3 <0.3 <0.3 <0.3 X50 1:1 NS <br /> 11/08/1999 NS NS NS NS NS NS -� <br /> 03/29/2000 - = <0.3 <0.3 <0.3 <50 1:1 NS <br /> 00 <0.3 <br /> 05/25/20 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 06/28/2000 NS NS NS NS NS NS <br /> 03/22/2001 NS NS NS NS NS NS <br /> 10/17/2001 NS NS NS NS NS NS <br /> MW-3 BB 03/29/2000 <0.3 <0.3 <0.3 <0.3 <50 L•1 NS <br /> MW-DISA 09/03/1991 <0.5 <0.5 <0.5 <0.5 <50 <0.8 <br /> 06/30/1992 <0.5 <0.5 <0.5 <0.5 <50 <br /> 10/0111992 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 01/21/1993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 03/2911993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 07/2011993 <0.5 <0.5 <0.5 <03 <50 <0.6 _ <br /> 09/30/1993 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 01/12/1994 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 04/14/1994 <0.5 <0.5 <0.5 <0-5 <50 NS <br /> 07/20/1994 <0.5 <0.5 <0.5 <0.5 <50 <0.6 <br /> 10/27/1994 <0.5 <0.5 <0.5 <0.5 <50 NS <br /> 03103/1995 <0.3 <0.3 <0.3 <0.3 <50 NS <br /> 12119!96° <0.5 <0.5 <0.5 1:1 NS <br /> 12/19/1996 <0.3 <0.3 <0.3 <0.3 <50 t NS <br /> 4117!97 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 08/12/1997 ND ND ND ND ND NS <br /> 12/22/1997 <0.3 <0.3 <0.3 <03 <50 2:1 NS <br /> 04/16/1998 <0.3 <03 <03 <0.3 <50 11 NS <br /> 07/23/1998 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 1 1/1 111 998 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 02/10/1999 <0.3 <0.3 <0.3 <0.3 <50 1:1 NS <br /> 0711511999 <0.3 <0.3 <03 <0.3 <50 1:1 NS <br /> 11/08/1999 NS NS NS NS NS NS _ <br /> 03!2912000 NS NS NS NS NS NS <br /> 06/28/2000 NS NS NS NS NS NS J <br /> 03/23/2001 NS NS NS NS NS NS <br /> 10/1712001 NS NS NS NS NS NS <br /> Gdatall-01.45 Page 2 o17 12105rzWl <br />