ARCHIVED REPORTS_XR0008656 CASE 1

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! ! TABLE 1- SUMMARY OF RESULTS OF GROUNDWATER MONITORING AND SAMPLING BP OIL COMPANY SERVICE STATION NO 11194 2375 TRACY BOULEVARD,TRACY,CALIFORNIA ALISTO PROJECT NO 14085 WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X LAB iD SAMPLING/ ELEVATION{a) WATER THICKNESS ELEVATION (b) (ppb) (ppb) (ppb) (ppb) (ppb) MONITORING (Feet) (Feet) (Feet) (Feet) AMW 1 04/26/90 2653 535 000 2118 100 ND<O 3 ND<0 3 ND<O 3 N043 ANA AMW-1 07/12190 2653 558 000 2095 70 NDA 3 ND<O 3 13 06 SUP AMW-1 08127190 2653 598 000 2055 ---- — - — -- AMW 1 11/02190 2653 594 000 2059 - — — AMW 1 11/05/90 2653 597 000 2056 ND<50 ND<O 3 ND<O 3 NDA 3 ND<0 3 SUP AMW 1 02/25191 2653 479 000 2174 ND<50 ND<O 3 NDA 3 ND<0 3 NDA 3 SUP AMW 1 06127/91 2653 589 000 2064 ND<50 ND<0 5 ND<0 5 ND<O 5 NDA 5 CHR AMW 1 09125/91 2653 653 000 2000 ND<30 NDA 30 NDA 30 NDA 30 ND<O 30 SEQ AMW-1 12/10/91 2653 567 000 2086 45 NDA 30 ND<O 30 ND<O 30 NDA 30 SEQ AMW-1 03/25/91 2653 475 000 2178 ND<30 ND<O 30 ND<O 30 ND<O 30 NDA 30 SEQ AMW 1 06125/92 2653 662 000 1991 ND<30 ND<O 30 NDA 30 ND<O 30 NDA 30 SEQ AMW f 12/08/92 2653 565 000 20 88 ND<W ND<0 5 NDA 5 ND<O 5 NDA 5 ANA AMW 1 03/10/93 2653 477 000 2176 ND<50 ND<0 5 NDA 5 ND<O 5 ND<O 5 PACE AMW 2 04/26/90 2645 494 000 2151 ND<50 NDA 3 NDA 3 ND<O 3 ND<0 3 ANA AMW 2 07/12190 2645 521 000 2124 ND<50 ND<0 3 ND<O 3 NDA 3 NDA 3 SUP AMW 2 08127190 2645 546 000 2099 -- — - AMW 2 11/02/90 2645 547 000 2098 - — — — AMW-2 11/05/90 2645 549 000 2096 ND<50 ND<0 3 ND<0 3 ND<O 3 NDA 3 SUP AMW-2 02125191 2645 456 000 2189 ND<50 NDA 3 NDA 3 ND<O 3 NDA 3 SUP AMW 2 06127/91 2645 560 000 2065 ND<50 N045 NDA 5 ND<O 5 ND<O 5 CHR AMW 2 09/25/91 2645 607 000 2038 ND<30 ND<O 30 ND<0 30 ND<0 30 ND<O 30 SEQ AMW-2 121101'91 2645 534 000 2111 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 SEQ AMW 2 03125/91 2645 470 000 2175 NN30 ND40 30 ND<0 30 NDA 30 ND<O 30 SEQ AMW 2 06/25192 2645 684 000 1961 ND<30 ND<O 30 NDA 30 ND<0 30 ND<O 30 SEQ AMW 2 12!08192 2645 528 000 2117 ND<50 ND<O 5 ND<0 5 NDA 5 ND<0 5 ANA AMW 2 OW10/93 2645 466 000 2177 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<O 5 PACE AMW-3 08/10/90 2541 746 000 1795 90 06 41 28 21 SUP AMW-3 08127/90 2541 746 000 1795 --- — ---- --- — AMW3 11/02190 2541 — - - -- AMW-3 11/05/90 2541 758 000 17 83 ND<50 ND<0 3 ND40 3 ND<0 3 ND<O 3 SUP AMW-3 02125/91 2541 703 000 1838 ND<50 ND<0 3 NDA 3 ND<0 3 ND<0 3 SUP AMW-3 06127/91 2541 760 000 1781 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 CHR AMW-3 09/25191 2541 792 000 1749 ND<30 ND<0 30 ND<O 30 ND<O 30 NDA 30 SEQ AMW-3 12/10191 2641 756 000 1785 ND<30 ND<O 30 NDA 30 ND<O 30 NDA 30 SEQ AMW-3 03125/92 2541 716 000 1825 ND<30 ND<O 30 NDA 30 ND<O 30 NM 30 SEQ AMW-3 06/25/92 2541 805 000 1736 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 SEQ AMW-3 12108192 2541 737 000 1804 ND<50 ND<O 5 ND<0 5 ND<0 5 NDA 5 ANA AMW-3 03/10/93 2541 709 000 1832 ND<50 ND<O 5 NDA 5 ND<0 5 ND<O 5 PACE 12 May 93 PAGE 5 OF 6