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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11191 <br /> 1469 E Hammer Lane, Stockton, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P1 Elevation Water Elevation TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (pg/L) (pg1L) (pg/L) (pg1L) (pg1L) M/L) (mg1L) Comments <br /> MW-4 1/3/2002 – -- 4898 -- 6,300 – ND<1 0 ND<1 0 ND41 0 ND<1 0 9,400 -- <br /> 4/11/2002 -- 2089 4646 -2557 22,000 -- ND<10 ND<10 ND<10 ND<10 11,000 – <br /> 7I3112002 – 2089 5122 -30 33 ND<50 - ND<i ND<1 ND<1 ND<1 1,900 15 8 <br /> 10/11/2002 – 2089 5312 -32 23 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 24 34 —48-2—0 -23 86 8,600 – <50 <50 <50 <50 17,000" – <br /> 07/11/2003 P 2434 5162 -2728 910 -- <50 <50 <50 <50 2,200` 20 <br /> 10/17/2003 P 2434 5632 -31 98 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 /> 104W120041 P 1 2434 1 51 56 1 -2722 1 820 1 – <25 1 <25 1 <25 1 64 810* – <br /> MW-5 04/10/2003 P 2291 4661 -2370 900 -- <5 0 <5 0 <5 0 <50 1,900* -- <br /> 07/11/2003 P 2291 5043 -2752 1,100 R – <50 <50 <50 <50 3,000* 21 <br /> 10/1712003 P 22 91 5490 -3199 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 /> 0412712004 P 2291 1 5008 1 -2717 1 3,100 – <50 <50 <50 <50 <br /> 4,fi00* – <br /> MW-6 04/10/2003 P 2207 4545 -2388 <50 – <0 50 <0 50 <0 50 <0 50 <2 5 - <br /> 07/11/2003 P 2207 4965 -2758 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 34 <br /> 10/17/2003 P 2207 5427 -3220 <50 - <0 50 <0 50 <0 50 <0 50 <0 50* – <br /> 01/26/2004 P 2207 49 74 -2767 75 – <0 50 <0 50 <0 50 <0 50 <0 50* - <br /> 0412712004 P 2207 1 4970 1 -2763 1 <50 – <0 50 1 <0 50 1 <0 50 1 <0 50 <0 50* <br /> MW-7 04/10/2003 P 2243 4630 -2387 <50 – <0 50 <0 50 <0 50 <0 50 <25 -- <br /> 07/11/2003 P 2243 4960 -2717 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 3 9 <br /> 10/17/2003 P 2243 5485 -3242 <50 – <0 50 <0 50 <0 50 <0 50 <0 50* -- <br /> 01/26/2004 P 2243 5013 -2770 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* - <br /> 0412712004 P 1 2243 1 4956 •2713 <50 – <0 50 <0 50 <0 50 <0 50 <0 50* <br /> Page 2 of 3 <br /> -- <br /> Report Date July 21,2004 <br />