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i • i <br /> 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 ms]) (pglL) (pg/L) (pg1L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW-8 4/16/1997 -- 2566 513 2053 <br /> 10/15/1997 — 2566 6 50 1916 - — — — — -- — -- <br /> 3/17/1998 — 2566 603 1963 — — — — — — -- <br /> 116l1999 — 2566 659 1907 1,000 -- 200 19 25 110 ND<1 0 -- <br /> 9/13/1999 -- 2566 642 1924 150 -- ND<1 0 ND<1 0 1 7 ND<1 0 26 — <br /> 1/19/2000 — 2566 597 1969 460 — ND<0 5 ND<0 5 38 26 34 -- <br /> 4/12/2000 — 2566 647 1919 280 — ND<0 5 ND<0 5 19 24 22 — <br /> 7/22/2000 — 2566 640 1926 410 — ND<0 5 ND<0 5 42 2 8 35 -- <br /> I Ot26/2000 — 2566 640 1926 60 ND<0 5 ND<0 5 ND<0 5 ND<0 5 52 — <br /> 1/17/2001 — 2566 -- — — — — — -- — — — <br /> 4/12/2001 — 2566 604 1962 280 -- 215 0 8 728 351 135 — <br /> 5/23/2001 — 2566 618 1948 76 — ND<0 5 N0<0 5 ND<0 5 ND<1 5 112 — <br /> 7/31/2001 — 2566 640 1926 100 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 958 -- <br /> 10/30/2001 — 2566 652 1914 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 51 — <br /> 1/29/2002 — 2566 582 1984 ND<50 -- 0 519 ND<0 5 ND<0 5 ND<1 0 105 — <br /> 4/30/2002 — 2566 613 1953 ND<250 -- ND<2 5 ND<2 5 ND<2 5 ND<5 0 135 — <br /> 7/30/2002 — 2566 — — — — -- — — — — — Area Under Construction- <br /> Not Sampled <br /> 10/31/2002 P 2566 623 1943 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<2 5 — <br /> 01/30/2003 P 2566 652 1914 <50 UJ -- <0 50 UJ <0 50 UJ <0 50 UJ <0 50 UJ 7 9 J — <br /> 04/30/2003 P 2566 579 1987 <50 — <0 50 <0 50 <0 50 <0 50 58 — <br /> 07/30/2003 P 2566 633 1933 <50 — <0 50 <0 50 <0 50 <0 50 37 — <br /> 10/29/2003 P 2566 638 1928 <50 — <0 50 <0 50 <0 50 <0 50 1 7 — <br /> 01/26/2004 P 2566 604 1962 <50 -- <0 50 <0 50 <0 50 <0 50 1 8 -- <br /> 04/27/2004 P 2566 6 55 1911 63 — <0 50 <050 <0 50 <0 50 24 — <br /> 07/30/2004 P 2566 672 1894 <50 -- <0 50 <0 50 <0 50 <0 50 47 — <br /> 10/28/2004 — 2566 589 1977 — -- — — — -- — — Sampled Annually 3rd <br /> Quarter <br /> I <br /> Report Date December 16,2004 Page 25 of 26 <br />