ARCHIVED REPORTS_XR0008656 CASE 1

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TABLE 1 SUMMARY OF RESULTS OF GROUNDWATER MONITORING AND SAMPLING SP 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 8 T E X LAB ID SAMPLING/ ELEVATION(a) WATER THICKNESS ELEVATION (b) (ppb) (Ppb) (ppb) (ppb) (Ppb) MONITORING (Feet) (Feer (Feet) (Fee!) MW-7 02/09/67 — - — ---- 6300 420 92 — 1200 SUP MW 7 09121187 — — — ---- ND<50 ND<O 5 ND<0 5 -- ND<0 5 SUP MW 7 101'20187 — - - — 65 ND<0 5 ND<O 5 — 007 SUP MW 7 11/20187 ---- — - — ND<50 ND<05. ND<O5 — ND45 SUP MW-7 03/13/88 26 50 675 — 1975 ---- — - — MW-7 03/23/88 26 50 696 -- 1954 57 59 ND<O 5 — 1 SUP MW 7 06/07/88 2650 675 — 1975 — ---- -- `- — — MW 7 10!16!86 2650 710 — 1940 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 SUP MW-7 02/15/90 266 50 580 000 2070 3400 94 73 70 170 SUP MW-7 04/2690 2650 663 000 1987 — — — — -- MW 7 07/12/90 2650 666 000 1984 ND<50 ND<0 3 ND<O 3 ND<0 3 ND<O 3 SUP MW-7 081271J0 2650 686 000 1964 MW 7 11/02/90 2650 703 000 1947 -- — — MW 7 11/05/90 2650 704 000 1946 ND<50 ND<0 3 ND<O 3 ND<0 3 ND<0 3 SUP MW 7 02125/91 2650 630 000 2020 ND<50 ND<O 3 ND<O 3 NM 3 ND<0 3 SUP MW 7 06127191 2650 714 000 1936 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 CHR MW 7 09125191 2650 850 000 1800 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 SEQ MW-7 12/10131 2650 698 000 1952 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 SEQ MW-7 03/25192 2650 653 000 1997 ND<30 ND<0 30 ND<O 30 ND<0 30 ND<O 30 SEQ MW-7 06125182 2650 813 000 1837 ND<30 ND<O 30 NDA 30 ND<0 30 NM 30 SEQ MW 7 12108/92 2650 689 000 1961 ND<50 ND<O 5 N04 5 ND<O 5 ND<O 5 ANA MW 7 03/10193 2650 654 000 1996 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<0 5 PACE MW-0 09/21/87 ---- — - — 2200 32 3 — 480 SUP MW-8 10120/87 - — — — 3800 20 5 — 210 SUP MW-8 11/20/87 ---- — — — 140 ND<0 5 ND<0 5 - 16 SUP MW-8 03/13/88 2566 608 000 1958 — ---- — ---- — MW-8 03/23/68 2566 600 000 1966 150000 280 210 — 3000 SUP MW-8 06/07/88 2566 620 000 1946 — ---- ---- — -- --'- MW-8 10/16 2566 653 000 1913 3400 28 ND<0 5 ND<0 5 630 SUP 8/6 MW-8 0211550 2566 665 000 1911 ND<50 ND43 ND<O 3 ND<0 3 ND<0 3 SUP MW-8 04128/90 2566 593 000 1973 — ---- — - — — MW-8 07/12/90 2566 598 000 1968 1100 27 13 360 1000 SUP MW-8 08127/90 2566 627 000 1939 — ---- — --- -"' — MW-8 111012190 2566 635 000 1931 — — — '-" ---- — MW-8 11/05FJ0 2566 638 000 19.28 2200 23 7 130 340 SUP MW-8 02125191 2566 553 000 2013 8100 20 21 150 240 SUP MW-8 06127191 2566 638 000 1928 3100 73 ND<0 5 140 330 CHR MW-8 09125191 2566 661 000 1885 6300 13 41 190 250 SEQ MW-0 12110/91 2566 625 000 1941 3600 75 24 90 120 SEQ MW-8 03125/92 2566 576 0 00 1990 1400 19 66 140 230 SEQ MW-8 06125192 2566 706 000 1860 120 ND<O 3 051 ND4 3 050 SEQ MW-8 12/06/92 2566 614 000 1952 75 ND<0 5 ND4 5 15 52 ANA QC-1 (e} 12/08192 2566 614 000 1952 51 ND<0 5 ND<O 5 09 34 ANA MW-6 03/10/93 2566 567 000 1999 ND<50 14 ND<0 5 07 22 PACE QG1 {e} 03/10/93 2566 567 000 1999 ND<50 16 ND<O 5 ND<0 5 is PACE 12 May-93 PAGE 4 OF 6