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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station No 4493 <br /> 205 N Center Street, 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) (pg1L) (pg]L) (pg1L) (pg1L) (pg1L) (pg1L) (mg/L) Comments <br /> MW-1 2/16/1999 — 1194 1335 -141 231 — 135 ND 237 ND ND — <br /> 3/10/1999 -- 1194 1301 -107 — — -- — — — -- — <br /> 6/17/1999 — 1194 1189 005 <50 - 352 <0 5 <0 5 302 <2 0 — <br /> 9/24/1999 -- 1194 -- — — -- -- -- — -- -- -- Well inaccessible <br /> 12116/1999 NP 1194 1439 -245 <50 — 235 <0 5 <0 5 302 <2 5 29 <br /> 3/28/2000 P 11 94 1212 -018 132 -- 0 864 <0 5 <0 5 <0 5 <25 182 <br /> 6/19/2000 P 1194 11 63 031 <50 — 0 692 <0 5 <0 5 <0 5 20 6/<2 0* 377 <br /> 9/19/2000 P 1194 1244 -050 782 -- 521 <0 5 <05 <0 5 <2 5/<2 0* 1 5 <br /> 11/30/2000 P 11 94 1362 -168 909 -- 0 698 <0 5 <05 <0 5/2 8* <2 0* 062 <br /> 9/13/2001 P 1194 1164 030 140 - 2 51<2 0* <0 51<2 0* <0 51<2 0* <0 51<2 0* <2 0* 172 <br /> 12/31/2001 P 1194 1085 109 <50 — <0 51<1 0* <0 5I<1 0* <0 510 0* <0 5/<1 0* <05 -- [1] <br /> 3/13/2002 P 1194 1388 -194 <50 -- 0 621<0 5* <0 5/<0 5* <0 5/<0 5* <0 5/<0 5* 0 71* 113 <br /> 6/28/2002 P 11 94 1215 -021 <50 -- 1 6 <0 5 <0 5 <0 5 0 57* 19 <br /> 9/16/2002 NP 1122 1275 -153 <50 -- <0 5 <0 5 <0 5 <0 5 <0 5* — <br /> 12/5/2002 P 11 22 1402 -280 <50 — <05 <0 5 <0 5 <0 5 <0 5* 3 <br /> 03/14/2003 P 1122 1400 -278 <50 — 058 <0 50 <0 50 <0 50 <0 50* 12 <br /> 06/09/2003 P 1107 1320 -213 <50 — <1 0 <1 0 <1 0 <1 0 <1 0* 31 <br /> 09/25/2003 P 11 07 1353 -246 <50 -- <10 <1 0 <1 0 <1 0 <1 0* 090 <br /> 12/23/2003 P 11 07 1439 -332 <50 -- <1 0 <1 0 <1 0 <1 0 <1 0* 1 3 <br /> 03/08/2004 P 1107 1337 -230 <50 -- <1 0 <1 0 <1 0 <1 0 <1 0* 13 <br /> MW-2 2/16/1999 -- 1243 1456 -213 ND -- ND ND ND ND ND -- <br /> 3/10/1999 — 1243 1370 -127 -- -- -- -- — — — <br /> 6/17/1999 — 1243 1252 -009 <50 -- <05 <0 5 <05 <05 <2 0 -- <br /> 9/24/1999 NP 1243 1224 019 <50 — <05 <0 5 <05 <05 <50 42 <br /> 12/16/1999 NP 1243 1529 -286 <50 — <05 <0 5 <05 <05 <2 50 43 <br /> 3/28/2000 P 1243 1295 -052 522 -- <05 <0 5 <0 5 122 <2 50 288 <br /> 6/19/2000 P 1243 1257 -014 <50 — <05 <0 5 <0 5 <0 5 <2 501<2 0* 212 <br /> 9/19/2000 P 1243 1233 010 <60 — <05 <0 5 0 514 <0 5 <2 501<2 0* 1 8 <br /> 11/30/2000 P 1243 1460 -217 138 — <05 <0 5 <0 5 <0 5 <2 00* 158 <br /> 9/13/2001 P 1243 1268 -025 100 — <0 51<2 0* <0 5/<2 0* <0 5/<2 0* <0 51<2 0* <2 00* 109 <br /> 12/31/2001 P 1243 1325 -082 83[2] — <0 51<1 0* <0 51<1 0* <0 51<1 0* <0 5/0 0* 1 6* — [3) <br /> 3/13/2002 P 1243 1573 -330 <50 — <0 51<1 0* <0 51<1 0' <0 51<1 0* <0 51<1 0* 5 1* 226 <br /> 6/28/2002 P 1243 1419 -176 59 1 7 <0 5 19 11 7 4* 27 <br /> Report Date May 10,2004 Page 1 of 7 <br />