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TABLE 2 GROUNDWATER ANALYTICAL DATA Knowles-Roek Stockton,California Page 8of15 (in pa is per billion) Well Date . TPHg Benzene Toluene Ethylbenzene Xylenes MTBE I MW-9 5/9/2000 <50 05 <0 5 <0 5 <0 5 27 Cont'd 8/15/2000 <50 <0 5 <0 5 <0 5 <0 5 15 11/21/2000 89 D 60 6 <05 <0 5 13 ' 3/7/2001 <50 <0 5 <0 5 <05 <0 5 98 5/23/2001 <50 <0 5 <0 5 <05 <0 5 85 8/29/2001 <50 <0 5 <0 5 <0 5 <0 5 6 0 12/6/2001 Not Sampled ' 2/20/2002 <50 <0 5 <0 5 1 <0 5 <1 0 8 7 5/22/2002 Not Sampled 8/26/2002 <50 <0 5 <0 5 1 <0 5 <1 0 8 2 ' 11/13/2002 Not Sampled 2/20/2003 <50 <0 5 <0 S 1 <0 5 <1 0 5 1 5/28/2003 Not Sampled ' 8/27/2003 <50 <0 5 <0 5 <05 <1 0 21 11/19/2003 Not Sampled 2/25/2004 <50 <0 5 <0 5 1 <0 5 <1 0----T-49 ' 5/20/2004 Not Sampled 8/25/2004 <50 <0 5 <0 5 1 0 5 <1 D 33 11/17/2004 Not Sampled MW-10 5/16/1995 260 19 4 1 39 11 =- ' 11/9/1995 1,700 320 34 31 250 2/8/1995 5,200 760 68 82 440 4/24/1996 13,000 1,500 51 570 1,400 -- ' 8/7/1996 2,400 130 <0 5 L 88 80 -- 11/5/1996 1,000 29 <0 5 14 8 7 2/5/1997 480 14 <0 5 <0 5 <0 5 - ' 5/7/1997 530 1 11 <0 5 <0 5 <0 5 -- 7/23/1997 260 4 9 <0 5 <0 5 <0 5 <5 0 11/20/1997 190 <0 5 <0 5 <05 <0 5 <5 0 2/26/1998 220 <0 5 <0 5 <0 5 <0 5 <5 0 ' 5/6/1998 83 <0 5 <0 5 <0 5 <0 5 -- 8/11/1998 <50 <0 5 <0 5 <05 <0 5 11/11/1998 <50 <0 5 <0 5 <0 5 <0 5 -- ' 2/11/1999 <50 <0 5 <0 5 <0 5 <0 5 -- 5/4/1999 <50 <0 5 <0 5 <05 <0 5 8/4/1999 110 1 <0 5 <0 5 <0 5 <0 5 -- ' 11/17/19991 120 <0 5 <0 5 <0 5 <0 5 <5 0 2/3/2000 <50 <0 5 <05 <0 5 <0 5 <5 0 5/9/2000 130 2 8 <0 5 1 1 17 <5 0 ' 8/15/2000 <so <0 5 <0 5 <05 <05 <5 0 11/21/2000 180 Is <0 5 <0 5 <0 5 <5 0 3/7/2001 99 10 <0 5 <0 5 <0 5 42 5/23/2001 <50 <05 <05 <05 <05 20 ' 8/30/2001 Not Sampled <0 5 12/6/2001 <50 <0 5 <0 5 <l 0 10 2/20/2002 Not Sampled