ARCHIVED REPORTS_XR0008659 CASE 1

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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G B T E X MTBE DO LAB ID SAMPLING1 ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug//I) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) (Feet) MW-1 02/09/87 -- -- -- --- ND<50 ND<0 5 ND<O 5 ND<O 5 --- — SUP MW-1 09/21/87 -- --- --- ND<50 ND<O 5 ND<O 5 -- ND<O 5 -- — SUP MW-1 10/20/87 -- -- — --- ND<50 ND<O 5 ND<O 5 --- ND<O 5 --- -- SUP MW-1 11/20/87 --- -- -- -- ND<50 ND<O 5 ND<O 5 --- ND<O 5 -- -- SUP MW-1 03/13/88 2688 588 - 2100 MW-1 03/23/88 2688 588 --- 2100 ND<50 ND<O 5 ND<O 5 ND<O 5 --- -- SUP MW-1 06/07/88 2688 595 - 2093 MW-1 10/18/88 2688 625 --- 2063 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<O 5 -- - SUP MW-1 02/15/90 2688 595 --- 2093 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<0 3 --- — SUP MW-1 04/26/90 2688 608 -- 2080 --- MW-1 07112/90 2688 611 --- 2077 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 —_ -- SUP MW-1 08/27/90 2688 545 --- 2143 --- MW-1 11102/90 2688 651 --- 2037 --- -- -- _ -__ --- MW-1 11/05/90 2688 653 --- 2035 ND<50 ND<O 3 ND<0 3 ND<O 3 ND<0 3 --- --- SUP MW-1 02125/91 2688 575 -- 21 13 ND<50 ND<O 3 ND<0 3 ND<O 3 ND<O 3 -- — SUP MW-1 06/27/91 2688 666 --- 2022 ND<50 ND<O 5 N13<05 ND<O 5 ND<O 5 --- CHR MW-1 09/25/91 2688 704 - 1984 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 -- SEQ MW-1 12/10/91 2688 646 -- 2042 ND<30 ND<O 30 ND<O 30 ND<O 30 ND<O 30 --- --- SEQ MW-1 03/25/92 2688 595 --- 2093 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<0 30 -- — SEQ MW-1 06/25/92 2688 802 -- 1886 ND<30 ND<O 30 ND<O 30 ND<0 30 ND<O 30 --- -- SEQ MW-1 12108/92 2688 644 --- 2044 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 -- ANA MW-1 03/10/93 2688 601 --- 2087 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<0 5 --- --- PACE MW-1 06116193 2688 567 --- 2121 — --- -_- MW-1 10/22/93 2688 649 --- 2039 MW-1 01/24/94 2688 638 --- 2050 --- -- MW-1 06/07/94 2688 684 — 2004 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 --- 34 PACE MW-1 09/13/94 2688 7 13 --- 1975 --- — -- --- — __ MW-1 01/10/95 2688 593 — 2095 --- --- --- -- — -- MW-1 03/23/95 2688 568 -- 2120 ND<50 ND<0 50 ND<O 50 ND<O 50 ND<1 0 --- 97 ATI MW-1 10/04/95 2688 696 --- 1992 --- MW-1 01/04/96 2688 624 2064 --- -- -- -- _ ___ ___ --- mW-1 03/29/96 2688 605 -- 2083 ND<50 ND<O 5 ND<1 ND<1 ND MW-1 07/01196 268B 661 -- 2027 --- --- __ _ ___ --- MW-1 10/15196 2688 680 --- 2008 --- --- -- --- ___ MW-1 04/16197 268B 540 --- 2148 MW-1 10/15/97 268B 675 -- 2013 --- --- MW-1 03/17/98 2688 634 -- 2054 --- --- MW-1 01/06/99 2688 652 -- 2036 MW-1 09/13199 2688 587 --- 2101 --- --_ ___ __ _-_ ___ Blarne Tech Services Inc Report 000722-N 2 BP Oil 11194 at 2375 Tracy Blvd,Tracy,California Page 1