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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) (NgR) (pg/L) WIL) WgIL) Cog/L) (991L) (pg/L) (mg/L) Comments <br /> MW-6 6/7/1994 — 2563 511 2052 — — -- — — — — _ <br /> 9/13/1994 -- 2563 571 1992 <br /> 1/10/1995 — 2563 322 2241 <br /> 3/23/1995 — 2563 386 2177 <br /> 10/4/1995 — 2563 533 2030 — <br /> 1/4/1996 -- 2563 431 2132 — -- — — — -- — <br /> 3/29/1996 — 2563 417 2146 — <br /> 7/1/1996 — 2563 472 2091 -- — — -- -- — -- <br /> 10/15/1996 -- 2563 499 20 64 — -- <br /> 4/16/1997 — 2563 363 2200 -- — <br /> 10/15/1997 — 2563 480 20 83 — — <br /> 3/17/1998 — 2563 440 2123 -- — — -- -- — — — <br /> 3/17/1998 -- 2563 511 2052 — — — - — — _ _ <br /> 1/6/1999 — 2563 4 73 2090 31,000 -- 220 N0<50 820 150 13,000 _ <br /> 9/13/1999 — 2563 4 99 20 64 11,000 — 50 54 420 83 14 — <br /> 1/19/2000 — 2563 437 2126 33,000 — 100 72 1,100 56 3,600 — <br /> 4/12/2000 — 2563 575 1988 26,000 -- 310 58 710 130 480 -- <br /> 7/22/2000 — 2,563 508 2055 300,000 -- 210 ND<75 1,700 1,100 1,300 -- <br /> 10/26/2000 — 2563 475 2088 220,000 — 580 400 1,400 1,600 1,800 — <br /> 1/17/2001 — 2563 -- — -- -- — -- -- -- _ <br /> 4/12/2001 -- 2563 4 58 2105 13,000 — 178 57 419 165 528 — <br /> 5/23/2001 — 2563 4 80 2083 17,000 - 259 11 7 515 272 159 <br /> 7/31/2001 — 2563 472 2091 14,000 _ 186 458 346 942 301 — <br /> 10/30/2001 — 2563 4 79 2084 13,000 -- 202 ND<25 100 ND<75 165 -- <br /> 1/29/2002 — 2563 425 2138 12,000 -- 256 836 145 269 344 — <br /> 4/30/2002 - 2563 4 61 2102 8,800 — 116 ND<12 5 548 ND<25 166 - <br /> 7/30/2002 -- 2563 — -- — — — -- -- — — — Parked Over-Not Sampled <br /> 10/31/2002 P 2563 4 90 2073 44 000 — 270 1,200 510 2,100 1,800 — <br /> 01/30/2003 P 2563 4 69 2094 8,500 J — 23 J <5 0 UJ 65 J <5 0 UJ 62 J — <br /> 04/30/2003 P 2563 4 54 2109 4,900 — 35 <10 44 <10 26 _ <br /> 07/30/2003 P 2563 518 20 45 22,000 _ <25 <25 <25 <25 <25 — <br /> 10/29/2003 P 2563 4 99 2064 4,700 -- 14 <25 23 <25 <25 -- <br /> 01/26/2004 P 2563 450 21 13 7,400 — 10 <10 UJ 35 <10 <10 — <br /> Report Date June 21,2005 Page 22 of 28 <br />