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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING <br /> t <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G S T E X MTBE DO [AS <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ug/11) (Ugll) (ug/1) (ugn) (ug") (ug11) (ppm) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) <br /> MW-3 09/02/86 -- — --- 320000 5000 2000 — 1000 -- SUP <br /> MW-3 02/09/87 --- --- - - -- -- — — -- -- -— <br /> MW-3 09/21/87 <br /> MW-3 10/20/87 — -- -- -- -- -- — — -- -- ___ <br /> MW-3 11/20/87 --- -- --- -__ -- -_ --- -- — — -- -- <br /> MW-3 03113/88 2521 473 -- 2048 <br /> MW-3 03/23/88 2521 479 -- 2042 — --_ --- <br /> MW-3 06/07/88 2521 490 — 2031 --- --_ —_ _— <br /> MW-3 10/08/88 2521 545 --- 1976 300000 7000 9700 20000 4000 — <br /> MW-3 02/15/90 2521 435 027 2106 — -- --- -_- — <br /> MW-3 04/26/90 2521 473 005 2052 <br /> MW-3 07/12/90 2521 468 001 2064 <br /> MW-3 08/27/90 2521 515 --- 2006 <br /> MW-3 11/02/90 2521 520 -- 2001 -- --- -- -- _- <br /> MW-3 11/05/90 2521 520 -- 2001 35000 850 560 1900 5600 — — SUP <br /> MW-3 02/25/91 2521 439 --- 2082 9800 110 47 300 590 -- SUP <br /> MW-3 06/27/91 2521 541 008 1986 36000 210 71 690 2200 --- — CHR <br /> MW-3 09/25/91 2521 615 042 1938 --- -- -_ _— — <br /> MW-3 12/10/91 2521 526 003 1997 <br /> MW-3 03/25/92 2521 420 001 2102 <br /> MW-3 06/25192 2521 652 060 1914 <br /> MW-3 12/08/92 2521 503 030 2041 <br /> MW-3 03/10/93 2521 429 SHEEN 2092 --- <br /> MW-3 06/16/93 2521 484 SHEEN 2037 <br /> MW-3 10/22/93 2521 489 TRACE 2032 <br /> MW-3 01/24/94 2521 1270 -- 1251 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 - — PACE <br /> MW-3 06/07/94 2521 1320 — 1201 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<O 5 --- --- PACE <br /> MW-3 09/13/94 2521 1160 — 1361 ND<50 33 ND<0 5 ND<0 5 19 --- --- PACE <br /> MW-3 01/10/95 2621 552 — 1969 240 9 4 12 38 -- --- ATI <br /> MW-3 03123/95 2521 412 --- 2109 ND<50 ND<0 50 ND<O 50 ND<O 50 ND<l 0 --- 76 ATI <br /> MW-3 10/04/95 2521 533 -- 1988 ND<50 054 ND<O 50 12 11 ND<5 0 48 ATI <br /> QC-1 (d) 10/04195 -- --- — -- ND<50 ND<O 50 ND<O 50 077 ND<1 0 ND<5 0 _— ATI <br /> MW-3 01/04196 2521 584 008 1943 — — _ _- <br /> MW-3 03/29/96 2521 568 010 1961 <br /> MW-3 07/01196 2521 623 006 1903 <br /> MW-3 10/15/96 2521 645 003 1878 -- -_ __ -__ _— <br /> MW-3 04116/97 2521 475 001 2047 2300 37 ND<10 0 170 170 ND<100 43 SPL <br /> QC-1 (d) 04/16/97 --- -- -- — ND<500 ND<5 0 ND<10 0 ND<10 0 ND<10 0 ND<100 --- SPL <br /> MW-3 10115/97 2521 518 — 2003 690 55 31 16 11 1 11 65 SPL <br /> MW-3 03/17/98 2521 424 --- 2097 ND<5 0 09 ND<1 0 ND<l 0 ND<1 0 ND<10 66 SPL <br /> QC-1 (d) 03/17/98 --- — -- --- ND<5 0 08 ND<1 0 ND<l 0 ND<1 0 ND<10 --- SPL <br /> Blaine Tech Servrces Inc Report 000119-G-2, BP Oil 11194 at 2375 Tracy Blvd,Tracy California Page 3 <br />