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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, 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) (Erg/L) (p91L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-3 10/15/1996 — 2521 645 1878 -- — - -- -- — — — 0 03 ft free product <br /> present,la] <br /> 4/16/1997 -- -- -- -- ND<500 — ND<5 0 ND<10 0 ND<10 0 ND<10 0 ND<100 — QC-1 <br /> 4/16/1997 -- 2521 4 75 2047 2,300 — 37 ND<10 0 170 170 ND<100 43 0 01 ft free product <br /> present,[a] <br /> 10/15/1997 — 2521 518 2003 690 -- 55 31 16 11 1 11 65 <br /> 3/17/1998 — — — — ND<5 0 — 08 ND<1 0 ND<i 0 ND<1 0 ND<10 — QC-1 <br /> 3/17/1998 — 2521 424 2097 ND<5 0 — 09 ND<1 0 ND<1 0 ND<1 0 ND<10 66 <br /> 1/6/1999 -- 2521 485 2036 90 — 2 ND<9 0 ND<1 0 ND<l 0 3 9 -- <br /> 9/13/1999 — 2521 501 2020 N0<250 -- ND<5 0 ND<5 0 ND<5 0 ND<5 0 86 — <br /> 1/19/2000 — 2521 451 2070 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 14 — <br /> 4/12/2000 — 2521 529 1992 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 30 — <br /> 7/22/2000 -- 2521 505 2016 ND<50 — ND<0 5 ND<0 5 ND<0 5 N0<0 5 12 — <br /> 10/26/2000 — 2521 460 2061 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 34 -- <br /> 1/17/2001 — 2521 461 2060 ND<50 -- ND<0 5 353 0 846 453 471 — <br /> 4/12/2001 — 2521 475 2046 130 — 072 ND<0 5 0 503 166 131 -- <br /> 5/23/2001 — 2521 492 2029 590 — ND<0 5 ND<0 5 ND<0 5 N0<1 5 828 — <br /> 7/31/2001 — 2521 515 2006 1,600 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 2,350 — <br /> 10/30/2001 — 2521 522 1999 ND<250 — ND<2 5 ND<2 5 ND<2 5 ND<7 5 48 5 — <br /> 1/29/2002 — 2521 405 21 16 170 - ND<0 5 ND<0 5 ND<0 5 ND<l 0 199 — <br /> 4130I2002 — 25 21 470 2051 310 — ND<2 5 ND<2 5 ND<2 5 ND<5 0 207 — <br /> 7/30/2002 P 2521 4 99 2022 ND<50 — 0 991 ND<0 5 ND<0 5 ND<i 0 1,280 — <br /> 10/31/2002 P 2521 491 2030 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 88 -- <br /> 01/30/2003 P 1 2521 4 73 2048 <50 — <050 <0 50 <0 50 <0 50 15 -- <br /> 04/30/2003 P 2521 461 2060 <50 - <050 <0 50 <0 50 <0 50 99 — <br /> 07/30/2003 P 2521 513 2008 <50 <0 50 <0 50 <0 50 <0 50 29 — <br /> 10/29/2003 P 2521 505 2016 <50 -- <0 50 <0 50 <050 <0 50 51 — <br /> 01/26/2004 P 2521 456 2065 <50 <0 50 <0 50 <0 50 <0 50 15 — <br /> 04/27/2004 P 2521 504 2017 <50 — <0 50 <0 50 <0 50 <0 50 27 — <br /> 07/30/2004 P 1 2521 1 528 1 1993 t <50 -- <0 50 <0 50 <0 50 <050 19 -- <br /> MW-4 9/2/1986 — — — — 48,000 — 3,000 3,200 — 4,700 — — <br /> 2/9/1987 — -- -- — 14,000 _ 230 160 -- 880 — - <br /> 9/21/1987 — — -- — 14,000 — 620 83 -- 9,600 — <br /> Report Date September 10,2004 Page 15 of 26 <br />