ARCHIVED REPORTS_XR0008105 CASE 1

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TABLE q1UMMARY OF RESULTS OF GROUNDWATER MONITORING is 0 r r WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X MTBE DO LAB ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug111) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) MONITORING (Feet) (Feet) (Feet) (Feet) MW-7 02/09/87 -- — — 6300 420 92 -- 1200 -- --- SUP MW-7 09/21/87 — — — ND<50 ND<O 5 ND<O 5 --- ND<O 5 — — SUP MW-7 10/20/87 — --- — — 65 ND<O 5 ND<O 5 — 007 --- — SUP MW-7 11/20/87 — --- — -- ND<50 ND<O 5 ND<O 5 - ND<O 5 — — SUP MW-7 03113/88 2650 675 --- 1975 — — -- --- --- — MW-7 03/23/88 2650 696 — 1954 57 59 ND<O 5 — 1 --- -- SUP MW-7 06107188 2650 675 --- 1975 --- --- -- -- .-- �_ MW-7 10/18/88 2650 710 --- 1940 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<0 5 --- — SUP MW-7 02/15/90 2650 580 -- 2070 3400 94 73 70 170 -- --- SUP MW-7 04/26/90 2650 663 --- 1987 -- — — -- --- -- - -- MW-7 07/12/90 2650 666 1984 ND<50 ND<0 3 ND<O 3 ND<O 3 ND<O 3 — — SUP MW-7 08127/90 2650 686 --- 1964 — — — — — -- — -- MW-7 11/02/90 2650 703 --- 1947 — — — — — — — — MW-7 11/05/90 2650 704 — 1946 ND<50 ND<0 3 ND<O 3 ND<O 3 ND<O 3 --- --- SUP MW-7 02/25191 2650 630 — 2020 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 --- --- SUP MW-7 06/27/91 2650 714 — 1936 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 CMR MW-7 09/25/91 2650 850 — 1800 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 --- --- SEQ MW-7 12/10/91 2650 698 — 1952 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- — SEQ MW-7 03/25/92 2650 653 --- 1997 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 - --- SEQ MW-7 06/25/92 2650 813 -- 1837 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 — — SEQ MW-7 12/08/92 2650 689 — 1961 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- — ANA MW-7 03/10/93 2650 654 -- 1996 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 — (1) — PACE MW-7 06/16/93 2650 643 -- 2007 — — -- — --- --- MW-7 10122/93 2650 697 -- 1953 — — — — -- — —MW-7 01/24/94 2650 683 --- 1967 — — — — -- -- --- MW-7 06/07/94 2650 729 - 1921 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<O 5 ND<5 0 (f) 34 PACE MW-7 09113194 2650 763 — 1897 — — — -- — — — — MW-7 01/10/95 2650 622 -- 2028 --- -- --- __ — __ — MW-7 03/23/95 2650 616 --- 2034 ND<50 ND<O 50 ND<0 50 ND<0 50 ND<1 0 -- 89 ATI MW-7 10104/95 2650 731 — 1919 — — -- - — -- MW-7 01/04/96 2650 685 — 1965 --- — -- --- --- --- --- MW-7 03/29/96 2650 649 — 2001 ND<50 ND<O 5 ND<1 ND<1 ND<1 ND<10 39 SPL MW-7 07/01/96 2650 704 — 1946 --- --- --- - --- -- — -- MW-7 10/15/96 2650 727 -- 1923 -- --- _-- - - — — MW-7 04/16/97 2650 585 --- 2065 — — — — — -- -- --- MW-7 10/15/97 2650 727 — 1923 MW-7 03/17/98 2650 659 — 1991 — — — — - -- — — MW-7 01/06/99 2650 698 --- 1952 — — — — — — — — Blaine Tech Services, Inc, Report 011030-C-1, BP Oil 11194 at 2375 Tracy Blvd,Tracy,California Page 13