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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) (yg1L) (pg1L) MIL) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-1 1!312002 -- -- 4740 -- -- -- - - -- -- -- <br /> 112312002 -- — 4663 — 110 — ND<l 0 ND<1 0 ND<i 0 1 110 — <br /> 4/11/2002 — 1917 4490 -2573 70 -- ND<1 0 ND<1 0 N0<1 0 ND<1 0 37 -- <br /> 7/31/2002 -- 1917 4941 -3024 230 — ND<1 ND<l 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 /> 07/1112003 P 2272 4978 -2706 4,200 R -- <500 <500 <500 1,000 9,900' 39 <br /> 10/17/2003 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 11000* -- <br /> 07/01/2004 P 2272 5416 -3144 3 700 — <120 <120 <120 <120 12 000` — <br /> 10/04/2004 P 2272 5833 -3561 3,100 -- <250 <250 <250 <250 9,900' — <br /> 01/12/2005 P 1 2272 1 5298 1 -3026 1 3,000 1 -- 1 <250 <250 1 <250 1 <250 1 9,400' 1 191 <br /> MW-2 1/3/2002 — — 4860 -- 1,800 -- ND<1 0 ND<1 0 ND<i 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 — N0<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 2000 — <10 <10 <10 <10 3,900*J 0711112003 P 2393 5107 -2714 650 R -- <50 <50 <50 <50 1600* 14 <br /> 10117/2003 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 <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 -3134 4,100 -- <250 <250 <250 <250 15,000* -- <br /> 10/04/2004 P 2393 5952 -3559 520 — <25 <25 <25 <25 1500* — <br /> 01/12/2005 P 23 93 j 54.32_... ..-3039. 2,800 — <250 <250 <250 <250 9,800* 273 <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<i 0 ND<1 0 18 000 — <br /> 7/31/2002 -- 1974 4977 -3003 1,800 - ND<1 ND<1 ND<l ND<1 30,000 13 9 <br /> 10/11/2002 — 1974 5192 -3218 26,000 — ND<100 150 ND<100 540 44,000 -- <br /> Report Date March 14,2005 Pagel of 4 <br />