ARCHIVED REPORTS_XR0008046 CASE 1

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Table* 0 Groundwater Elevation and Analytical Data Former BP Station#11194 2375 Tracy Boulevard Tracy,CA Measured Calc TOC Depth to Product GW 131 Elevation Water Thickness Elev GRO B T E X MTBE DO Well No Sampling Date NP (ft MSL) (ft BGS) (feet) (ft MSL) (pg[L) (pglL) (NgIL) (pg1L) (pg1L) (pg/L) (mg1L) Lab pH Comments MW-3 1/24/1994 --- 2521 1270 --- 1251 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 157 --- --- --- (contd) 6/7/1994 --- 2521 1320 --- 1201 ND<50 N0<0 5 ND<0 5 ND<0 5 ND<0 5 --- --- --- --- 9/13/1994 --- 25 21 11 60 --- 1361 ND<50 33 ND<0 5 ND<0 5 1 9 ND<5 0 --- --- --- 1/10/1995 — 2521 552 --- 1969 240 9 4 12 38 --- --- -- --- 3/23/1995 --- 2521 412 --- 2109 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 --- 76 --- --- 10/4/1995 --- --- --- --- --- ND<50 ND<0 50 ND<0 50 077 ND<1 0 ND<5 0 --- --- --- QC-1 10/4/1995 --- 2521 533 --- 1988 ND<50 054 ND<0 50 12 1 1 ND<5 0 48 --- --- 1/4/1996 --- 2521 584 --- 1943 --- --- --- --- --- --- --- --- --- present,[a] 3/29/1996 --- 2521 568 --- 19 61 --- --- --- --- --- --- --- --- --- present,[a] 7/1/1996 --- 2521 623 --- 1903 -- --- --- --- --- --- --- --- --- present, [a] 10/15/1996 --- 2521 645 --- 1878 --- --- --- --- --- --- --- --- --- present,[a] 4/16/1997 --- --- --- --- -- ND<500 ND<5 0 ND<10 0 ND<10 0 ND<10 0 ND<100 --- --- --- QC-1 4/16/1997 --- 2521 475 --- 2047 2,300 37 ND<10 0 170 170 ND<100 43 --- --- present, [a] 10/15/1997 --- 2521 518 -- 2003 690 55 31 16 11 1 11 65 --- --- 3/17/1998 --- --- -- --- --- ND<5 0 08 ND<1 0 ND<1 0 ND<1 0 ND<10 --- --- --- QC-1 3/17/1998 --- 2521 424 --- 2097 ND<5 0 09 ND<1 0 ND<1 0 ND<1 0 ND<10 66 --- --- 1/6/1999 --- 2521 485 --- 2036 90 2 ND<1 0 ND<1 0 ND<1 0 39 --- --- --- 9/13/1999 --- 2521 501 --- 2020 ND<250 ND<5 0 ND<5 0 ND<5 0 ND<5 0 86 --- --- --- 1/19/2000 --- 2521 451 --- 2070 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 14 --- --- --- 4112/2000 --- 2521 529 --- 1992 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 --- --- --- --- 7/22/2000 --- 2521 505 --- 20 16 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 --- --- -- --- 1012612000 --- 2521 460 --- 2061 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 --- --- 1/17/2001 --1/1712001 --- 2521 461 --- 2060 N D<50 N D<0 5 353 0 846 453 --- --- --- --- 4/12/2001 --- 2521 475 --- 2046 130 072 ND<0 5 0 503 166 --- --- --- --- 5/23/2001 --- 2521 492 --- 2029 590 ND<0 5 ND<0 5 ND<0 5 ND<1 5 828 --- --- --- 7/31/2001 --- 2521 515 --- 2006 1,600 ND<0 5 ND<0 5 ND<0 5 ND<1 5 2,350 --- --- --- 10/30/2001 --- 2521 522 --- 1999 ND<250 ND<2 5 ND<2 5 ND<2 5 ND<7 5 485 --- --- --- 1/29/2002 --- 2521 405 --- 21 16 170 ND<0 5 ND<0 5 ND<0 5 ND<1 0 199 --- --- --- 4/3012002 --- 2521 470 --- 2051 310 ND<2 5 ND<2 5 ND<2 5 ND<5 0 207 --- --- --- 7/30/2002 P 2521 499 -- 2022 ND<50 0 991 ND<0 5 ND<0 5 ND<1 0 1,280 --- --- --- 10/31/2002 P 2521 491 --- 2030 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 88 --- --- --- 1/30/2003 P 2521 473 --- 2048 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<0 50 15 --- --- --- 4/30/2003 P 2521 461 --- 2060 <50 <0 50 <0 50 <0 50 <0 50 99 --- --- -- 7/30/2003 P 2521 513 --- 2008 <50 <0 50 <0 50 <0 50 <0 50 29 --- --- --- 10/29/2003 P 2521 505 --- 2016 <50 <0 50 <0 50 <0 50 <0 50 51 --- --- --- 1 IBP-ARCO105 BP-COP Sites1111941Tab1es106-Q1111194–Table 1 15 SECOR International Inc