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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pglL) (pg/L) (pg/L) (p91L) (pg/L) (pglL) (pglL) (mglL) Comments <br /> AMW-4 8/10/1990 -- 2536 4 83 2053 ND<50 — 06 07 29 42 — -- <br /> 8/27/1990 — 2536 483 2053 -- — -- _ _ _ <br /> 11/2/1990 - 2536 489 2047 — -- -- <br /> 11/5/1990 -- 2536 488 2048 ND<50 — 03 ND<O 3 ND<O 3 ND<0 3 .. _ <br /> 2/25/1991 — 1 2536 408 2128 ND<50 -- ND<0 3 ND<O 3 ND<O 3 ND<O 3 -- — <br /> 3/25/1991 -- 2536 426 2110 ND<30 — ND<O 30 ND<O 30 ND<O 30 ND<O 30 — -- <br /> 6/27/1991 -- 2536 501 2035 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — <br /> 9/25/1991 — 2536 545 1991 ND<30 -- ND<O 30 ND<O 30 ND<O 30 ND<O 30 — — <br /> 12/10/1991 -- 2536 479 2057 N13<30 -- ND<O 30 ND<0 30 ND<O 30 ND<O 30 — -- <br /> 6/25/1992 — 2536 616 1920 1 ND<30 -- ND<0 30 ND<O 30 ND<O 30 ND<O 30 — -- <br /> 12/8/1992 — 2536 474 2062 ND<50 — ND<0 5 ND<O 5 ND<O 5 ND<O 5 -- <br /> — I <br /> 3/10/1993 — 2536 428 21 08 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 — — <br /> 6/16/1993 -- 2536 406 2130 ND<50 — ND<Q 5 ND<O 5 ND<O 5 ND<O 5 -- -- <br /> 10/22/1993 -- 2536 4 85 2051 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 — <br /> 1/24/1994 - 2536 481 2055 ND<50 — ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 -- <br /> 6/7/1994 - 2536 530 2006 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 34 <br /> 9/13/1994 - 2536 559 1977 ND<50 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 0 6 9 <br /> 1/10/1995 — 2536 422 2114 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<1 71 <br /> 3/23/1995 — 253 398 2138 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<1 0 7 9 <br /> 10/411995 — 2536 532 2004 ND<50 — ND<0 50 ND<O 50 ND<O 50 ND<1 0 ND<5 0 5 9 <br /> 1/4/1996 2536 448 20 88 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 ND<5 0 1 <br /> 3/29/1996 - 2536 432 2104 ND<50 -- ND<O 5 ND<1 ND<1 ND<1 ND<10 37 <br /> 7/1/1996 — 2536 488 2048 ND<50 _ ND<O 5 ND<1 ND<1 ND<1 ND<10 61 <br /> 10/1511996 — 1 2536 509 2027 ND<50 ND<O 5 ND<l 0 ND<1 0 ND<1 0 ND<10 7 5 <br /> 4/16/1997 -- 2536 367 21 69 <br /> 10/15/1997 2536 512 2024 <br /> 3/17/1998 -- 2536 471 2065 <br /> 1/6/1999 - 2536 483 2053 _- <br /> 9/13/1999 — 2536 513 20 23 <br /> 1/19/2000 2536 4 55 20-81 --- <br /> 4/1212000 <br /> 1 --4/12/2000 2536 440 2096 <br /> 7/22/2000 - 25 36 507 2021 <br /> 10/26/20Q0 25 36 $68 2068 -- -- _ <br /> Report Date June 21,2005 Page 6 of 28 <br />