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i • • <br /> 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 P1 Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes Mt9E DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) WIL) (pg/L) (pg/L) (pglL) (lrglt) (pgiL) (pg/L) (mg/L) Comments <br /> SMW-1 12/16/1994 5024 1254 3770 5,200 — 740 210 330 600 — - <br /> 2/28/1995 -- 5024 1240 3784 8,300 -- 1,000 330 450 790 -- — <br /> 4/26/1995 — 5024 1271 3753 5,100 — 470 110 270 480 — - <br /> 7/27/1995 - 5024 1300 3724 7,400 -- 410 42 360 630 -- — <br /> 10/26/1995 — 5024 1303 - - -- — __ _ _ _ (a) <br /> 10/27/1995 — 5024 -- -- 7,600 640 33 440 410 — - <br /> 2/12/1996 -- 5024 1200 — 3,800 390 <0 5 220 98 -- <br /> 4/18/1996 - 5024 1258 -- 500 -- 60 <0 5 20 74 -- <br /> 7/1811996 - 5024 1285 — 3 400 — 200 <5 130 56 60 <br /> 11/15/1996 5024 1340 -- 2,500 — 180 <25 62 21 590 -- <br /> 3/14/1997 NP 5024 1335 -- 1,700 — 130 <05 <0 5 <0 5 230 013 <br /> 6/4/1997 NP 5024 1273 - 520 -- 36 31 1 4 1 5 47 005 <br /> 8/11/1997 -- 5024 -- -- -- — _- — — — <br /> 11/1711997 NP 5024 1296 -- <50 -- <05 <0 5 <0 5 <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 16 <br /> 9/11/1998 NP 5024 1290 -- <50 — <0 5 <0 5 <0 5 <05 290 17 <br /> 12/15/1998 -- 5024 -- - - -- -- -- -- After this sampling,Well <br /> no longer monitored or <br /> sampled <br /> TB-1 12/19/2001 -- I — -- — <50 - <0 50 <0 50 <0 50 <0 50 j -- — <br /> TEX-1 10/26/1995 -- — 1286 - <350 -- <5 <0 5 <0 5 <0 5 — - (a) <br /> 2/12/1996 -- -- 1090 — -- -- -- — — — <br /> 4/18/1996 — — 1135 -- <50 — <0 5 <0 5 <0 5 <0 5 — — <br /> 7/18/1996 — — 1152 .. -- - — -. -- -- _ — <br /> 11/15/1996 -- — 1230 <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 /> 9111/1998 -- -- -- - — — -- -- - — <br /> Report Date July 15,2004 Page 24 of 26 <br />