ARCHIVED REPORTS_XR0008673 CASE 1

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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING BP OIL COMPANY SERVICE STATION NO 11194 _ 2375 TRACY BOULEVARD,TRACY,CALIFORNIA ALISTO PROJECT NO 10-085 WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X MTBE DO LAS 1D SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug//1) (ugA) (ug/I) (ugn) (ugA) (ugA) (ppm) MONITORING (Feet) (Feet) (Feet) (Feet) AMW-1 04/26190 2653 535 --- 2118 100 ND<O 3 ND<O 3 ND<O 3 ND<O 3 — --- ANA AMW-1 07/12/90 2653 558 --- 2095 70 ND<O 3 ND<O 3 13 06 -- --- SUP AMW-1 06/27/90 2653 598 — 2055 -- -- — --- — _ — AMW-1 11/02/90 2653 594 — 2059 AMW-1 11/05x90 2653 597 — 2056 ND<50 ND<0 3 ND<0 3 ND<0 3 ND<O 3 — — SUP AMW-1 02)25/91 2653 479 — 2174 ND<50 ND<O 3 ND<0 3 ND<O 3 ND<0 3 — --- SUP AMW-1 0627191 2653 589 — 2064 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 — -- CHR AMW-1 0925/91 2653 653 --- 2000 ND<30 ND<O 30 ND<0 30 ND<0 30 ND<O 30 -- -- SEQ AMW-1 12/10/91 2653 567 --- 2086 45 ND<0 30 ND<0 30 ND<O 30 ND<0 30 — -- SEQ AMW-1 03/25/91 2653 475 — 2178 ND<30 ND<0 30 ND<O 30 ND<O 30 ND<0 30 — -- SEQ AMA 06/25/92 2653 662 -- 1991 ND<30 ND<0 30 ND<0 30 ND<O 30 ND<0 30 -- -- SEQ AMW-1 12106/92 2653 565 -- 2088 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 -- — ANA AMW-1 03/10/93 2653 477 — 2176 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 -- - PACE AMW-1 06/103 2653 527 2126 AMW-1 10/22/93 2653 589 — 2064 --- — AMWA 01/24/94 2653 538 — 2115 AMW-1 06/07/94 2653 581 2072 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 — 33 PACE AMW-1 09/13/94 2653 646 — 2007 — AMW-1 01/10/95 2653 486 --- 2167 AMW-1 03/23/95 2653 460 — 2193 ND<50 ND<0 50 ND<O 50 ND<0 50 ND<1 0 — 83 ATI AMW-1 10/04/95 2653 622 2031 — — — — — — _ AMW-1 01/04/96 2653 512 — 2141 - — — — — — — AMW-1 03/29/96 2653 452 -- 2201 ND<50 ND<0 5 ND AMW-1 07/01/96 2653 510 — 2143 --- — — -- — -- -- _ AMW-1 10/15/96 2653 531 - 2122 --- - — — -- — — AMW-1 04/16/97 2653 386 -- 2265 -- — — --- — -- _- — AMW-1 10/15/97 2653 604 --- 2049 — -- — — _- -- — AMW-1 03/17/98 2653 560 -- 2093 — - --- --- 17-Apr-98 Page 9