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<br /> Table 1 J
<br /> Groundwater Elevation and Analytical Data
<br /> Former BP Retail Site No 11191
<br /> 1469 E Hammer Dane, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date PI Elevatlon Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (Eng/L) (pg1L) (Ng/L) (pg/L) (,ug1L) (,vg/L) (WgIL) (mg/L) Comments
<br /> MW-1 1/3/2002 -- - 4740 - -- -- _ - -- -- -- -
<br /> 1/23/2002 - - 4663 - 110 - ND<1 0 ND<1 0 ND<1 0 1 110 -
<br /> 4/11/2002 - 1917 4490 -2573 70 -- ND<1 0 ND<1 0 ND<i 0 ND<1 0 37 -
<br /> 7/31/2002 - 1917 4941 -3024 230 - ND<1 ND<1 ND<1 ND<1 9,300 184
<br /> 10/11/2002 - 1917 5142 -3225 10,000 -- 42 530 250 190 10,000 -
<br /> 01/3012003 P 2272 4803 -2531 <12,000 - <120 UJ <120 UJ <120 UJ <120 UJ 7,600*J
<br /> 04/10/2003 P 2272 4647 -2375 2,700 - <10 <10 <10 <10 4,900* -
<br /> 07/11/2003 P 2272 4978 -2706 4,200 R -- <500 <500 <500 1,000 9,900* 39
<br /> 10117/2003 P 2272 5492 -3220 4,500 R - <250 <250 <250 300 13,000* -
<br /> 01/26/2004 P 2272 5028 -2756 3,000 - <100 <100 <100 <100 10,000* -
<br /> 04/27/2004 P 2272 4976 -2704 8,300 - <250 <250 <250 <250 11,000* -
<br /> 07/01/2004 P 2272 5416 -31 44 3,700 - <120 <120 <120 <120 12,000* --
<br /> 1010412004 P 1 2272 5833 1 .3561 1 3,100 - <250 <250 <250 <250 91900* -
<br /> MW-2 1/3/2002 - - 4860 - 1,800 - ND<1 0 ND<1 0 ND<1 0 ND<1 0 1,900 -
<br /> 1/10/2002 - -- 4842 - 1,400 -- ND<10 ND<10 ND<10 ND<10 1,800 --
<br /> 4/11/2002 - 2047 4600 -2553 1,700 - ND<1 0 ND<1 0 ND<1 0 ND<1 0 1,300 -
<br /> 7/31/2002 - 2047 5077 -3030 ND<50 - ND<1 ND<1 ND<1 ND<1 4,500 99
<br /> 10/11/2002 - 2047 5275 -3228 9,200 - ND<50 250 93 930 11,000 -
<br /> 01/30/2003 P 2393 4939 -2546 5,300 J - <50 UJ <50 UJ <50 UJ <50 UJ 4,900*J -
<br /> 04/10/2003 P 2393 4779 -2386 2,000 - <10 <10 <10 <10 3,900-J -
<br /> 07/11/2003 P 2393 5107 -2714 650 R - <50 <50 <50 <50 1,600* 14
<br /> 10/17/2003 P 23 93 5615 -3222 12,000 -- <250 <250 <250 <250 22,000` -
<br /> 01/26/2004 P 2393 5158 -2765 270 - <100 <100 <100 <100 980* --
<br /> 04/27/2004 P 2393 5099 -2706 1,700 - <50 <50 <50 <50 2,800* -
<br /> 07/01/2004 P 2393 5527 -31 34 4,100 -- <250 <250 <250 <250 15,000* -
<br /> 10/0412004 P 2393 5952 1 -3559 520 - <25 <25 <25 <25 11500" -
<br /> MW-3 1/3/2002 - - 4780 - 25,000 - ND<1 0 ND<1 0 ND<1 0 ND<1 0 27,000 -
<br /> 4/11/2002 - 1974 4522 -2548 14,000 -- ND<1 0 ND<1 0 ND<1 0 ND<1 0 18,000 -
<br /> 7/31/2002 - 1974 4977 -3003 1,800 - ND<1 ND<i ND<1 ND<1 30,000 139
<br /> 10/11/2002 -- 1974 5192 -3218 26 000 - ND<100 150 ND<100 540 44,000 --
<br /> 01/30/2003 P 23N 4860 -2536 <50,000 - <500 <500 <500 <500 22,000* --
<br /> 04/10/2003 P 2324 4704 -2380 <5,000 - <50 <50 <50 <56 25,000* -
<br /> Report Date December 14,2004 Page 1 of 4
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