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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 /> TO Depth to Water Level Ethyl- Total
<br /> Well Date P! Elevation Water Elevation TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg1L) (pg1L) (pg1L) (pg/L) (pg1L) (pg/L) (mg/L) Comments
<br /> 14W-3 7/31/2002 1974 4977 -3003 1,800 ND<1 ND<1 ND<1 ND<1 30,000 139
<br /> 10/11/2002 - 19 74 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 /> 0411=003 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 /> 10/17/2003FP 2324 5526 -3202 9,700 R -- <500 <500 <500 <500 25,000-
<br /> 01/26/2004 P j 2324 5079 -2755 3,600 -- <250 <250 <250 <250 17,000* --
<br /> 04/27/2004 P 2324 5016 -2692 3,600 - <50 <50 <50 <50 6,300*J -
<br /> 07/01/2004 P 2324 5437 -31 13 2,700 - <120 <120 <120 <120 8,800'
<br /> 10/04/2004 P 2324 5822 -3498 780 <50 <50 <50 <50 2,700-
<br /> 01/12/2005
<br /> ,700*0111212005 P 2324 5367 -304 1,500 - <100 <100 <100 <100 4,200* 301
<br /> 05/11/2005 P 2324 5008 -2684 1 <2,500 -- <25 <25 <25 <25 2,000' --
<br /> MW-4 1/3/2002 - - 4898 -- 6,300 -- ND<1 0 ND<1 0 ND<1 0 ND<i 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 /> 01/30/2003 P 2434 4977 -2543 <50,000 - <500 UJ <500 UJ <500 UJ <500 UJ 14,000*J -
<br /> 04/10/2003 P 2434 4820 -2386 8,600 -- <50 <50 <50 <50 17 000* -
<br /> 07/11/2003 P 2434 5162 -2728 910 -- <50 <50 <50 <50 2,200' 2 0
<br /> 10/17/2003 P 2434 5632 -3198 15,000 R - <500 <500 <500 <500 37,000* --
<br /> 01/26/2004 P 2434 5189 -2755 6,200 - <250 <250 <250 <250 22,000* --
<br /> 04/27/2004 P 2434 51 56 -2722 820 - <25 <25 <25 64 810* -
<br /> 07/01/2004 P 2434 5571 -3137 7 900 -- <500 <500 <500 <500 24,000* --
<br /> 10/04/2004 P 2434 5977 -3543 7,400 -- <250 <250 <250 <250 17,000* --
<br /> 01/12/2005 P 2434 5467 -3033 7,000 - <1,000 <1,000 <1,000 <1,000 23,000* 323
<br /> 05111/2005 P 2434 5125 -2691 <25,000 - <250 <250 <250 <250 12,000* --
<br /> MW-5 04/10/2003 P 22 91 46 61 -23 70 900 -- <5 0 <5 0 <5 0 <5 0 1,900* --
<br /> 07/11/2003 P 2291 5043 -2752 1,100 R - <50 <50 <50 <50 3,000* 21
<br /> 10/17/2003 P 2291 5490 -31 99 1,600 R -- <50 <50 <50 <50 3,600* -
<br /> 01/26/2004 P 2291 5038 -2747 1,300 - <100 <100 <100 <100 4,300'
<br /> 04/27/2004 P 2291 50 08 -2717 3,100 - <50 <50 <50 <50 4,600*
<br /> 07/01/2004 P 2291 5441 -31 50 1,400 - <50 <50 <50 <50 4,900* -
<br /> Report Date June 15, 2005 Page 2 of 4
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