ARCHIVED REPORTS_XR0008105 CASE 1

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TABLE 1 - UMMARY OF RESULTS OF GROUNDWATER MONITORING 9 0 ' WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X MTBE DO LAB ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (6) (uglll) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) MONITORING (Feet) (Feet) (Feel) (Feet) AMW-4 08110/90 2536 483 — 2053 ND<50 06 07 29 42 – -- SUP AMW-4 08/27/90 2536 483 - 2053 --- --- -- --- -- — AMW-4 11/02/90 2536 489 2047 -- --- --- – – -- — AMW-4 11/05/90 2536 488 — 2048 ND<50 03 ND<O 3 ND<0 3 ND<O 3 – --- SUP AMW-4 02/25/91 2536 408 --- 2128 ND<50 ND<0 3 ND<0 3 ND<0 3 ND<0 3 – — SUP AMW-4 06/27/91 2536 501 — 2035 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<O 5 — — CHR AMW-4 09/25/91 2536 545 --- 1991 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 – — SEQ AMW-4 12110/91 2536 479 — 2057 ND<30 ND<0 30 ND<O 30 ND<0 30 ND<O 30 --- -- SEQ AMW-4 03125/91 2536 426 --- 2110 ND<30 ND<0 30 ND<0 30 ND<0 30 ND<0 30 --- — SEQ AMW4 06/25/92 2536 616 -- 1920 ND<30 ND<0 30 ND<0 30 ND<O 30 ND<0 30 – — SEQ AMW-4 12/08/92 2536 474 — 2062 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — ANA AMW-4 03/10193 2536 428 - 2108 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<0 5 — (1) -- PACE AMW-4 06/16/93 2536 406 — 21 30 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 — (1) -- PACE AMW-4 10/22/93 2536 485 – 2051 ND<50 ND40 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 (1) - PACE AMW-4 01/24/94 2536 481 — 2055 N0<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 (1) --- PACE AMW-4 06/07/94 2536 530 -- 2006 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 0 (1) 34 PACE AMW-4 09/13/94 2536 559 -- 1977 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 (1) 69 PACE AMW4 01/10/95 2536 422 -- 2114 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 71 ATI AMW-4 03/23/95 2536 398 -- 2138 ND<50 ND<0 50 ND<0 50 ND<O 50 ND<1 0 -- 79 ATI AMW-4 10/04/95 2536 532 -- 2004 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 59 ATI AMW-4 01/04/96 2536 448 --- 2088 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 10 ATI AMW-4 03/29/96 2536 432 — 2104 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 37 SPL AMW4 07/01/96 2536 488 -- 2048 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 61 SPL AMW-4 10/15/96 2536 509 — 2027 ND<50 ND<O 5 ND<1 0 ND<1 0 ND<1 0 ND<10 75 SPL AMW-4 04/16/97 2536 367 --- 2169 -- -- – – __ _ –_ _ AMW-4 10/15/97 2536 512 - 2024 --- --- _-- --- -- — — – AMWA 03/17/98 2536 471 --- 2065 -- -- -- – — -- — -- AMW-4 01/06/99 2536 483 — 2053 -- -- -- — -- — – – AMW-4 09/13/99 2536 513 --- 2023 --- — — — -- – -- -- AMW-4 01/19/00 2536 455 --- 2081 -- — -- --- --- -- -- – AMW4 04/12/00 2536 440 -- 2096 – -- -- -- -- -- – --- AMW-4 07/22/00 2536 507 — 2029 – -- --- — – — — AMW-4 10/26/00 2536 468 – 2068 AMW-4 01/17/01 2536 522 - 2014 — — – -- — --- -- --- AMW-4 04/12/01 2536 476 2060 --- --- -- --- --- - — — AMW-4 05/23/01 2536 485 — 2051 ND<50 ND<0 5 147 ND<0 5 ND<1 5 ND<0 5 — PACE AMW-4 07131/01 2536 511 – 2025 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 5 ND<O 5 — PACE AMW-4 10/30/01 2536 498 — 2038 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 5 818 -- PACE I Blaine Tech Services, Inc Report,011030-C-1 BP Oil 11194 at 2375 Tracy Blvd,Tracy,California Page 20