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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2093 <br /> 3425 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) (pg1L) (pg1L) WIL) (pg/L) (pg/L) (pg1L) (mg1L) Comments <br /> SMW 1 11/15/1996 — 50 24 13 40 — 2,5D0 -- 180 <2 5 62 21 590 — <br /> 3/14/1997 NP 5024 1335 -- 1,700 — 130 <0 5 <0 5 <05 230 1 013 <br /> 6/4/1997 NP 5024 1273 — 520 — 36 31 14 15 47 005 <br /> 8/11/1997 — 50 24 — <br /> 11/17/1997 NP 5024 1296 -- <50 — <0 5 —<05 —<05 <0 5 290 — <br /> 3/30/1998 NP 5024 1215 — 910 — 46 <05 <05 11 110 16 <br /> 6/25/1998 NP 5024 1270 — 692 — 0 666 <0 5 <0 5 <0 5 765 —1-6 <br /> 9/1111998 NP 5024 1290 — <50 — <05 <0 5 <0 5 <0 5 290 1 7 <br /> 12/15/1998 — <br /> --R-24— — - — -- -- — — -- — — After this sampling Well <br /> no longer monitored or <br /> sampled <br /> TB-1 12/19/2001 — -- -- — <50 — <0 50 <0 50 <0 50 <0 50 — — <br /> TEX-1 10/26/1995 — — 12 86 -- <350 — <5 <0 5 <0 5 —<05 — (a) <br /> 2/12/1996 — - 1090 — — - <br /> 4/18/1996 — — 11 35 — <50 — <0 5 <05 <0 5 <0 5 — — <br /> 7/18/1996 — — 1152 -- — - <br /> 11115l1996 — — 12 30 <br /> 3/14/1997 <br /> 6/4/1997 - <br /> 8/11/1997 - <br /> 11/17/1997 <br /> 3/30/1998 -- - 1100 <br /> 6/25/1998 - - 100 <br /> 9/11/1998 <br /> 12/15/1998 -- — 1147 -- — — -- — -- — -- 01 <br /> 5/14/1999 — - 1150 — -- -- — -- -- — — 4 8 <br /> 9/16/1999 — — 11 70 — -- — -- — — — — <br /> 24 <br /> 12/22/1999 — -- 1156 — -- — — -- -- — — 183 <br /> 2/29/2000 — — 1098 -- — _ _ — _ _ 4 <br /> 6/7/2000 — — <br /> 9/25/2000 — -- <br /> 12/21/2000 — — 1188 <br /> 3/27/2001 <br /> Report Date February 22,2005 Page 25 of 27 <br />