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<br /> Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> Former BP Retail Site No 11191
<br /> 1469 E Hammer Lane, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg1L) (pg/L) (pg1L) (pg/L) (pg/L) (mg/L) Comments
<br /> MW-1 1/3/2002 - 4740 -- - - - - - --
<br /> 1/23/2002 -- 4663 -- 110 - ND<10 ND<10 ND<10 1 110 -
<br /> 4/11/2002 - 1917 4490 -2573 70 -- ND<1 0 ND<1 0 ND<1 0 Na<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 /> 01/30/2003 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 1 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 -3144 3,700 - <120 <120 <126 <120 12,000-
<br /> 10/0412004 P 2272 5833 -35 61 3,100 - <250 <250 <250 <250 9,900* --
<br /> 0111212005 P 2272 5298 -3026 3,000 - <250 <250 <250 <250 9 400* 1 91
<br /> 0511112005 P 1 2272 1 4951 -2679 <10,000 -- <100 <100 <100 <100 4,800* -
<br /> MW-2 1/312002 -- -- 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<1 0 ND<1 0 ND<i 0 ND<1 0 1,800 --
<br /> 4/11/2002 -- 2047 4600 -2553 1,700 -- ND<1 0 ND<1 0 ND<1 0 ND<I 0 1,300 --
<br /> 7/31/2002 -- 2047 5077 -3030 ND<50 -- N0<1 ND<t ND<1 ND<1 4,500 99
<br /> 10/1112002 - 2047 5275 -3228 9,200 -- ND<50 250 93 930 11,000 --
<br /> 01/30/2003 P 1 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 51 07 -2714 650 R - <50 <50 <50 <50 1,600' 14
<br /> 10/17/2003 P 2393 5615 -3222 12,000 - <250 <250 <250 <250 22,000* -
<br /> 01/26/2004 P 2393 51 58 -2765 270 -- <100 <100 <100 I <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 /> 10104/2004 P 2393 5952 -3559 520 <25 <25 <25 <25 1,500* --
<br /> 01/12/2005 P 2393 5432 -3039 2,800 -- <250 <250 <250 <250 9,800' 273
<br /> 05/1112005 P 23 93 1 5086 1 -2693 1 <1,200 -• <12 1 <12 1 <12 1 <12 720* 1 -
<br /> MW-3 1 113/2002 - 4780 -- 25,000 - ND<1 0 ND<1 0 ND<1 0 ND<i 0 27,000 -
<br /> 4/11/2002 1974 4522 -25 48 14 000 - ND<1 0 ND<1 0 ND<1 0 ND<1 0 18 000 -
<br /> Report Date June 15,2005 Page 1 of 4
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