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• i i <br /> 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 PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msi) (feet bgs) (feet msi) (pg1L) (pglL) (pglL) (pg1L) (pg/L) (pglL) (pglL) (mg/L) Comments <br /> MW-2 3/13/2002 P 1243 1573 -330 <50 -- <0 5/<1 0* <0 5/<l 0* <0 5/<1 0* <0 5/<l 0* 51* 226 <br /> 6/28/2002 P 1243 1419 -1 76 59 -- 17 <0 5 1 9 1 1 7 4* 27 <br /> 9/16/2002 NP 1206 1479 -273 <50 -- <2 5 <2 5 <2 5 <2 5 3 4* — <br /> 12/5/2002 P 1206 1614 -408 51 — <2 0 <2 0 <20 <2 0 3 1* 0 <br /> 03/14/2003 P 1206 1614 -408 <100 - <1 0 <10 <1 0 <1 0 1 7* 1 12 <br /> 06/09/2003 F 1 1206 1538 -332 53 R -- <1 0 <1 0 <1 0 <1 0 2 2* 14 <br /> 09/25/2003 P 1 1206 1574 -368 <50 -- <1 0 <1 0 <1 0 <1 0 12* 12 <br /> 12/24/2003 P 1206 1645 -439 <50 -- <10 <1 0 <1 0 <1 0 13* 1 8 <br /> 03/08/2004 P 1206 1544 -338 <50 — <1 0 <1 0 <1 0 <1 0 1 2* 1 1 <br /> 06/0912004 — 1206 — — -- -- — — — — — — unable to <br /> locate,possibly paved <br /> over <br /> MW-3 2/16/1999 -- 1251 1464 -213 ND -- ND ND ND ND 706 -- <br /> 3/10/1999 -- 1251 1399 -148 -- - -- — — — -- — <br /> 6/17/1999 -- 1251 1297 -046 <50 -- <05 <05 <0 5 226 144 -- <br /> 9/24/1999 -- 1251 -- -- -- — — — -- — — -- Well inaccessible <br /> 12/16/1999 NP 1251 1553 -302 <50 - <05 <05 <0 5 <0 5 <2 5 41 <br /> 3/28/2000 P 1251 1321 -070 <50 <05 <05 <0 5 <0 5 246 224 <br /> 6/19/2000 P 1251 1279 -028 <50 - <05 <05 <0 5 <0 5 278/260* 198 <br /> 9/19/2000 P 1251 1371 -120 757 -- 0 512 <05 <0 5 <0 5 2541241* 09 <br /> 11/30/2000 P 1251 1487 -236 81 1 -- 0 674 <0 5 <0 5 1 15 195* 076 <br /> 9/13/2001 P 1251 -- — -- — -- — -- — — — Well filled with sediment <br /> 12/31/2001 P 1251 1325 -074 1,900[2] -- 60139* 8 7/<10* <5 0/14* 30117* 150* — <br /> 3/1312002 P 1251 1661 -410 <50 - <0 5/<0 5* <0 5/<0 5* <0 51<0 5* <0 51<0 5* 1. 108 <br /> 6/28/2002 P 1251 1446 -195 <500 -- <50 <50 08 <50 <0 5* 1 1 <br /> 9/16/2002 P 1306 1510 -204 <50 -- <05 <0 5 <0 5 <0 5 0 69* -- <br /> 12/5/2002 P 1306 1650 -344 <50 - <0 5 <0 5 <0 5 <0 5 <0 5* 05 <br /> 03/14/2003 P 1306 1615 -309 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50* 18 <br /> 06/09/2003 P 13 06 1566 -260 <50 — <10 <1 0 <1 0 <1 0 <1 0* 14 <br /> 09/25/2003 P 1306 1597 -291 <50 <1 0 <1 0 <1 0 <10 <1 0* 09 <br /> 12/23/2003 P 13 06 1671 -365 <50 -- <10 <1 0 <1 0 <1 0 <1 0* 14 <br /> 03/08/2004 P 1306 1569 -263 <50 <10 <1 0 <1 0 <1 0 <1 0* 12 <br /> Aa e2of8 <br /> Deport Date July 29,2004 g <br />