ARCHIVED REPORTS_XR0008093 CASE 1

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Table 1 Groundwater Monitoring and Analytical Data BP Oil No 11194 2375 Tracy Boulevard,Tracy,California Well Date Well Depth to Product^aroundwalei TPHg B T E % MIDE DO Number Sampled Elevation Water Thickness Elevation (-g)L) (pg/L) 04L) (pg1L) (pg1L) (1rg1L) (mg/L) (Feet) (Feet) (Feet) (Feel) (Cord d) 3/17/1998 2536 471 -- 2065 — - - - 1/6/1999 2536 483 2053 - 9/13/1999 2536 513 2023 1/19/2000 2636 455 — 2081 — — — — 4/12/2000 2536 440 2096 — — 7122l2000 2536 507 2029 — — — — — 10/26/2000 2536 468 2068 — — — — — — 1/17/2001 2536 522 2014 - 4112l2001 2536 476 2060 — — 5/2312001 2536 485 — 2051 ND<50 ND<O 5 1 47 ND<O 5 ND<1 5 ND<0 5 — 7/31/2001 2536 511 — 2025 ND<50 ND<O 5 ND<O 5 ND<D 5 ND<l 5 ND<0 5 10/30/2001 2536 498 2038 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<t 5 818 1/29/2002 2536 441. -- 2095 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<t 0 ND<D 5 — 4/30/2002 2536 472 — 2064 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<l 0 ND<0 5 — 7/30/2002 P 2536 502 2034 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<l 0 ND<O 5 10!31/2002 P 2536 495 — 2041 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<0 5 ND<2 5 1/3012003 P 2536 472 2064 ND<5D ND<O 5 ND<O 5 ND<0 5 N0<0 5 ND<0 5 4/30/2003 P 2536 459 2077 <50 <05 <05 <0 5 <0 5 <25 — 7/30/2003 P 2536 518 — 2018 <50 <05 <05 <0 5 <0 5 <0 5 — 10129l2003 P 2536 502 — 2034 <50 <0 5 <0 5 <D.5 <0 5 <0 5 — AMVV 5 1?JIQ11991 2619 599 2024 ND�<30 NV<0 < < < — — 3725l1992 2b 19 5 89 — 2U 8U 12 48 NU 12/8/1992 2619 578 — 2041 56 ND<0 5 ND<O 5 ND<O 5 ND<0 5 — 3/10/1993 2619 550 -- 2069 ND<50 32 06 20 51 — 6/16/1993 2619 376 --- 2243 ND<50 ND<O 5 NON 5 ND<O 5 ND<0 5 -- 10/22/1993 2619 593 2026 300 ND<0 5 ND<0 5 ND<O 5 ND<0 5 840 — 1/24/1994 2619 555 2064 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<O 5 45 — BR/1994 2619 601 20 18 ND<50 ND<O 5 NPN 5 ND<O 5 N0<0 5 ND<5 0 37 9/13/1994 26 19 633 1986 ND<50 N0<0 5 ND<O 5 ND<0 5 ND<O 5 ND<5 0 73 1/10/1995 2619 541 2078 ND<50 50 20 ND<0 5 20 — 51 3!23!1995 2619 542 Y 2077 ND<50 1 5 NDN 50 079 '6 -- 9 3 0 840 10/4/1995 26 19 630 1989 210 ND<l 0 ND<l 0 ND<l 0 N0<2 64 1/4/1996 2619 571 2048 360 ND<2 5 NO<25 ND<2 5 ND<5 0 1300 19 QC 1 1/4!1996 -- -- -- 370 ND<2 5 ND<2 5 ND<2 5 ND<5 0 1300 — 3/29/1996 2619 550 20 69 9 400 25 60 14 40 12000 30 71111996 2619 605 — 2014 170 ND<G 5 ND<l ND<l ND<l 220 52 QC 1 7/1/1996 — — — — 170 NDN 5 ND<l ND<1 ND<1 230 — 10/15/1996 2619 627 1992 ND<250 10 ND<5 0 ND<5 0 ND<5 0 27000 64 4/16/1997 2619 484 2135 — — — — 10/1511997 2619 604 2G 15 — — — — 3/17/1998 2619 560 -- 2059 — — — — — — 1/6/1999 2619 579 2040 — — — — 9113/1999 2619 557 — 2062 — — — — — — 1119/2000 26 19 569 — 2050 — — — — — — 4/12/2000 2619 534 — 20 85 7/22/2000 2619 597 — 2022 — — — — 10/26/2000 2619 490 2129 --- — — — — 1/17/2001 2619 610 — 2009 — — — — — 4/1212001 2619 586 2033 — - 5/23/2001 2619 593 2026 580 1 78 439 323 165 612 --- 7/31/2001 2619 607 2012 2 100 153 ND<2 5 ND<2 5 ND<7 5 2470 — 10I30/2001 2619 596 2023 1,900 ND<5 0 ND<5 0 ND<5 0 ND<15 2180 -- 1/29/2002 2619 549 — 2070 290 368 185 1 26 601 109 4/30/2002 2619 566 — 2053 1 900 201 ND<0 5 407 ND<l 0 1640 — 7/30l2002 P 2619 691 1929 ND<500 ND<5 ND<5 ND<5 ND<10 781 10131/2002 P 2619 588 -- 2031 50 066 ND<0 5 ND<O 5 ND<0 5 19 113012003 P 2619 5 77 -- 2042 52 ND<0 5 ND<O 5 NDN 5 092 24 — 4/30I2003 P 2619 553 20 66 <50 <0 5 <0 5 <0 5 <0 5 76 7/30/2003 P 2619 Ell 2008 300 R 94 <25 <2 5 <2 5 44 10/2912003 P 2619 605 — 2014 <50 <0 5 <0 5 <0 5 <0 5 47 ND<30 ND 3/25/1992 2668 486 2182 97 43 ND<G 30 74 61 — 6/25/1992 2668 700 1968 ND<30 ND<0 30 ND<0 30 ND<O 30 ND<D 30 -- 1218l1992 2668 582 20 86 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<0 5 — -- 3/10/1993 2668 547 2121 ND<50 ND<O 5 ND<D 5 ND<0 5 ND<O 5 — 6/16/1993 2668 348 2320 ND<50 ND<G 5 ND<0 5 ND<O 5 ND<O 5 — — 10/22/1993 2668 590 — 2078 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 ND<5 0 1/2411994 26 68 578 2G 90 ND<50 ND<0 5 NO<O 5 ND<0 5 ND<O 5 N0<5 0 — k\VV processUS BP ARCO\t 1194\Quarterly\4 QTR 03111194 GW MR 4W3 rage 10 of 11