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• 9 • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station No 2168 <br /> 441 W Charter Way, Stockton, 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) (pg1L) (ug1L) W/L) (,vg/L) (pglL) (pg/L) WIL) (mgIL) Comments <br /> MW-7 12!612001 -- 888 2163 -1275 6,800 — 580 270 210 930 <5 0" 09 <br /> 2/14/2002 — 888 2003 -1115 62[81 — <0 50 <0 50 053 <0 50 <050 24 <br /> 6/13/2002 — 888 2035 -1147 1,400[8] — 29 4 12 13 <0 50 14 <br /> 8/2212002 — 8 88 2138 -1250 1,400 — 11 <50 15 10 <0 50 09 <br /> 11/13/2002 -- 888 2233 -1345 1,400 -- 40 <10 18 34 <10 — <br /> 02/12/2003 -- 888 2316 -1428 820 — <50 <50 <50 <50 <50 — <br /> 05I2912003 P 888 2080 -1192 380 — <0 50 <0 50 19 13 <1 0 502 <br /> 08/04/2003 P 888 2141 -1253 620 — <0 50 <0 50 <0 50 <0 50 <050 198 <br /> 11/03/2003 P 888 2250 -1362 320 J — <2 5 UJ <2 5 UJ <2 5 UJ <2 5 UJ <2 5 UJ 196 <br /> 02/09/2004 P 888 2234 -1346 290 — 55 <25 <25 6 8 <2 5 238 <br /> 05/10/2004 P 888 2140 -1252 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 17 <br /> 08/09/2004 1 P 1 888 1 2250 -1362 980 45 44 J 18 28 <0 50 08 <br /> MW-8 8/30/2000 — 935 18 85 -950 115 -- <2 <2 <2 <2 <2 NA <br /> 11/21/2000 -- 935 1930 -995 <50 -- <0 5 <0 5 <0 5 <0 5 <2 NA <br /> 2/15/2001 — 935 1883 -948 <50 -- <0 5 <0 5 <0 5 <05 <2 12 <br /> 5/17/2001 -- 935 1890 -955 <50 — <0 5 <0 5 <0 5 <05 <2 26 <br /> 8/16/2001 — 935 2012 -1077 <50 — <0 5 <05 <0 5 <05 <2 09 <br /> 12/6/2001 — 935 1829 -894 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 16 <br /> 2/14/2002 -- 935 1927 -992 <50 — <0 50 <0 50 <050 <0 50 <0 50 31 <br /> 6113/2002 — 935 1973 1038 <50 — <0 50 <0 50 <050 <0 50 <0 50 12 <br /> 8/22/2002 935 2078 .1143 76 -- 23 052 56 44 <050 18 <br /> 19/13/2002 — 935 2085 -1150 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 02/12/2003 P 935 2417 -1482 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 266 <br /> 05/29/2003 P 935 2058 -1123 <50 <0 50 <0 50 <0 50 <0 50 <0 50 498 <br /> 08/04/2003 P 935 2081 -1146 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 29 <br /> 11/03/2003 P 935 2121 -1186 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 118 <br /> 02/09/2004 P 935 2101 -1166 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 244 <br /> 0 511 012 004 P 935 2076 -1141 <50 — <0 50 <0 50 <0 50 <0 50 <0 50 196 <br /> 108/09/20041 P 1 935 1 2194 1 -1259 1 <50 1 -- <0 50 1 <0 50 <0 s0 <0 5o <0 50 1 12 <br /> MW-8B 8/30/2000 — 961 2027 -1066 1,130 -- 425 496 106 108 <2 NA <br /> 11/21/2000 961 2088 -1127 924[4] -- 241 234 525 109 <2 NA <br /> 2/15/2001 — 961 2088 -1127 811 [7] — 159 298 49 492 <2 13 <br /> Report Date September 24,2004 Page 10 of 12 <br />