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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 msl) (pg/L) (pg/L) (pglt-) (pglL) (pg/L) (j►g/L) (erg/L) OWL) Comments <br /> MW-3 10/22/1993 — 2521 489 2032 -- — — — — -- -- — Trace <br /> 1/24/1994 — 2521 1270 1251 ND<50 — ND<0 5 ND<O 5 ND<O 5 ND<0 5 157 -- <br /> 617/1994 -- 2521 1320 1201 ND<50 — ND<0 5 ND<O 5 1413<0 5 ND<0 5 -- — <br /> 9/13/1994 -- 2521 1160 1361 ND<50 — 33 ND<O 5 ND<O 5 1 9 ND<5 0 — <br /> 1/10/1995 — 2521 552 1969 240 — 9 4 12 38 — -- <br /> 3/23/1995 -- 2521 412 2109 ND<50 — ND<O 50 ND<O 50 ND<O 50 ND<1 0 — 76 <br /> 10/4/1995 -- — -- — ND<50 -- ND<0 50 ND<O 50 077 ND<1 0 ND<5 0 — QC-1 <br /> 10/4/1995 -- 2521 533 1988 ND<50 — 054 ND<O 50 12 1 1 ND<5 0 48 <br /> 1/4/1996 — 2521 584 1943 -- -- — - — — — — 0 08 ft free product <br /> present,(a] <br /> 3/29/1996 — 2521 568 1961 -- — - — — - — — 0 10 ft free product <br /> present,[a] <br /> 7/1/1996 — 2521 623 1903 — — — — — — — 0 06 It free product <br /> present,[a] <br /> 10/15/1996 -- 2521 645 1878 — — — — — — — — 0 03 It free product <br /> present,[a] <br /> 4/16/1997 — -- — -- ND<500 -- ND<5 0 ND<10 0 N0<10 0 ND<10 0 ND<100 — QC-1 <br /> 4/1611997 — 2521 475 2047 2 300 — 37 ND<10 0 170 170 ND<100 43 0 01 ft free product <br /> present,[a] <br /> 10/15/1997 -- 25 21 518 2003 690 — 55 31 16 11 1 11 65 <br /> 3/17/1998 — — -- — ND<5 0 — 08 ND<1 0 ND<1 0 ND<1 0 ND<10 — QC-1 <br /> 3/1711998 — 2521 424 2097 ND<5 0 — 09 ND<1 0 ND<1 0 ND<1 0 ND<10 66 <br /> i <br /> 1/6/1999 — 2521 485 2036 90 — 2 ND0 0 ND<1 0 ND<1 0 39 — <br /> 9/13/1999 — 2521 501 2020 ND<250 — ND<5 0 ND<5 0 ND<5 0 ND<5 0 86 <br /> 1/19/2000 — 2521 451 2070 N13<50 -- ND<O 5 ND<0 5 ND<O 5 ND<0 5 U <br /> 4/12/2000 -- 2521 529 1992 ND<50 — ND<O 5 ND<O 5 ND<O 5 ND<O 5 30 -- <br /> 7/22/2000 — 1 2521 505 2016 ND<50 — ND<O 5 ND<0 5 ND<O 5 ND<O 5 12 -- <br /> 10/26/2000 — 2521 4 60 2061 ND<50 — ND<O 5 ND<0 5 ND<0 5 ND<O 5 34 — <br /> 1117/2001 -- 2521 461 2060 ND<50 — ND<0 5 353 0 846 453 471 — <br /> 4/12/2001 -- 2521 475 2046 130 -- 072 ND<0 5 0 503 166 131 -- <br /> 5/23/2001 — 2521 492 2029 590 — ND<0 5 ND<O 5 ND<O 5 ND<1 5 828 — <br /> 7/31/2001 — 25 21 515 2006 1,600 -- ND<0 5 ND<O 5 ND<O 5 ND<1 5 2,350 — <br /> 10/30/2001 -- 2521 522 1999 ND<250 — ND<2 5 ND<2 5 ND<2 5 ND4 5 48 5 — <br /> 1/29/2002 — 2521 405 2116 170 — ND<O 5 ND<O 5 ND<O 5 ND<l 0 199 — <br /> 4/30/2002 -- 2521 470 20 51 310 — ND<2 5 ND<2 5 1 ND<2 5 1 ND<5 0 1 207 <br /> Report Date December 16,2004 Page 15 of 26 <br />