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<br /> Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> Former BP Service Station No 11191
<br /> 1469 E Hammer Lane, Stockton CA
<br /> TQC Depth to Water Level Ethyl- Total
<br /> Well Date P! Elevation Water Elevation TPHg TPHd Benzene Toluene I benzene Xylenes MtBE DQ
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (ug/L) (pglL) (ug1L) WIL-) (pg1L) (pg/L) WL) (mg1L) 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<1 0 ND<1 0 37 -
<br /> 7/31/2002 - 1917 4941 -3024 230 -- ND<1 ND<1 N0<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 48-03 -2531 <12 000 -- <120 UJ <120 UJ <120 UJ <120 UJ 7,600*J --
<br /> 04/1012003 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 /> 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 /> MW-2 1/3/2002 - - 4860 -- 1,800 -- ND<1 0 ND<1 0 N0<1 0 ND<1 0 1,900 --
<br /> 1/10/2002 -- -- 4842 -- 1,400 -- ND<1 0 ND<i 0 ND<1 0 ND<1 0 1,800 --
<br /> 4/11/2002 -- 2047 4600 -2553 1,700 - ND<1 0 ND<i 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 /> 04110/2003 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 /> 01126/2004 P 2393 5158 -2765 270 -- <100 <100 <100 <100 980* --
<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<l ND<1 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 2324 4860 -2536 <50,000 - <500 <500 <500 <500 22,000* -
<br /> 04/10/2003 P 2324 4704 -2380 <5,000 -- <50 <50 <50 <50 25 000* -
<br /> 07/11/2003 P 2324 5012 -2688 5,000 R - <500 <500 <500 <500 10,000* -
<br /> 1 011 7/2 00 3 P 2324 5526 -3202 9,700 R <500 <500 <500 <500 25,000* -
<br /> 01/2612004 P 2324 5079 -2755 3,600 -- <250 <250 <250 <250 17,000* --
<br /> MW-4 1/3/2002 - - 4898 6,300 -- ND<1 0 ND<1 0 ND<1 0 ND<1 0 9,400
<br /> 4/11/2002 -- 2089 4646 -2557 22 000 - ND<1 0 ND<1 0 ND<1 0 ND<1 0 11,000 -
<br /> 7/31/2002 2089 5122 -3033 ND<50 -- ND<1 ND<1 ND<1 ND<1 1,900 158
<br /> 10/11/2002 - 2089 5312 -3223 ND<2500 ND<25 ND<25 ND<25 ND<25 9,000 --
<br /> Report Date April 30,2004 Page 1 of 3
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