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f1g,1of3 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station#4493 <br /> 205 N Center St,Stoc on,CA <br /> Weld Depth Groundwater Groundwater Ethyl Xylenes MtBE MtBE <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (8020) (8260) DO <br /> Number Sampled fl MSL ft TOC ft,MSL Chan e ft b b b b b b b (mg/)) <br /> MW-1 2/16/1999 11 94 1335 1 41 -- 231 1 35 NO 237 ND NO <br /> 3/10/1999 13 01 1 07 034 - - <br /> 6/17/1999 11 89 005 1 12 <50 3 52 <0 5 <0 5 302 <2 0 <br /> 9124/1999 Well Inaccessible <br /> 12/16/1999 NP 1439 245 -- <50 2 35 <0 5 <0 5 302 <2 50 2 9 <br /> 3/28/2000 P 1212 -016 2 27 132 0 864 <0 5 <0 5 <0 5 <2 50 1 82 <br /> 6/19!2000 P 11 63 0 31 049 <50 0 692 <0 500 <0 500 <0 500 206 <2 0 377 <br /> 9/19/2000 P 1244 -050 081 78 2 521 <0 500 <0 500 <0 500 <2 50 <2 0 1 5 <br /> 11/30/2000 P 1362 1 68 1 18 909 0 698 <0 500 <0 500 <0 50012 80' <2 00 0 62 <br /> 9/13/2001 P 11 64 030 1 98 140 2 5/<2 0' <0 50/<2 0' <0 50/<2 0' <0 50/<2 0' <2 0 1 72 <br /> 12/31/01' P 1085 1 09 079 <50 <0 501<1 0" <0 50/<1 0' <0 50/<1 0' <0 50/<1 0' <0 50 <br /> 3/13/02 P 1388 1 94 3 03 <50 0 62/<O 50' <0 50/<0 50' <0 50/<O 50" <0 50/<O 50' 0 71 1 13 <br /> 6/28/2002 P 1215 -0 21 173 <50 16 <05 <0 5 <0 5 -- 067 1 9 <br /> MW 2 2/16/1999 1243 1456 213 NO ND NO NO ND NO <br /> 3/10/1999 1370 1 27 086 -- <br /> 6/17/1999 1252 -009 1 18 <50 <0 5 <0 5 <0 5 <0 5 <2 0 <br /> 9/24/1999 NP 1224 019 028 <50 <0 5 <0 5 <0 5 <0 5 <5 0 4 2 <br /> 12/16/1999 NP 1529 286 305 <50 <0 5 <0 5 <0 5 <0 5 <2 50 4 3 <br /> 3/28/2000 P 1295 -0 52 2 34 522 <0 5 <0 5 <0 5 1 22 <2 50 288 <br /> 6/19/2000 P 1257 -014 038 <50 <0 500 <0 500 <0 500 <0 500 <2 50 <2 0 212 <br /> 9/19/2000 P 1233 010 024 <50 <0 500 <0 500 0 514 <0 500 <2 50 <2 0 1 8 <br /> 11/30/2000 P 1460 -217 227 138 <0 500 <0 500 <0 500 <0 500 -- <2 00 1 58 <br /> 9/13/2001 P 1268 -025 1 92 100 <0 50/<2 0' <0 50/<2 O' <0 50/<2 0' <0 501<2 0" <2 0 1 09 <br /> 12/31/01' P 1326 -0 82 0 57 B31 <0 50/<1 0' <0 50/<1 0' <0 50/<1 0' <0 50/<1 0' — 1 6 <br /> 3/13/02 P 1573 -330 2 48 <50 <0 50/<1 0' <0 50/<1 0' <0 50/<1 V <0 50/<1 0' 51 226 <br /> 6/28/2002 P 1419 -176 164 59 17 <0 5 19 11 — 7 4 2 7 <br /> MW 3 2/16/1999 1261 1464 213 -- NO NO NO NO NO 706 <br /> 3/10/1999 1399 1 48 065 — — — <br /> 6/17A 999 1297 046 1 02 <50 <0 5 <0 5 <0 5 2 26 144 - <br /> 9/24/1999 Well inaccessible <br /> 12/16/1999 NP 1553 302 <50 <0 5 <05 <0 5 <0 5 <2 50 41 <br /> 3128/2000 P 1321 -07 2 32 <50 <0 5 <0 5 <0 5 <0 5 246 -- 224 <br /> 6!1912000 P 1279 028 042 <50 <0 500 <0 500 <0 500 <0 500 278 260 1 98 <br /> 9/19/2000 P 1371 1 20 -092 75 7 0 512 <0 500 <0 500 <0 500 254 241 0 9 <br /> 11/3012000 P 1487 2 36 -1 16 81 1 0 674 <0 500 <0 500 1 15 -- 195 076 <br /> 9/13/2001 P We€I filled with dirt <br /> 12/31/2001 P 1325 0 74 -- 1,9001 60139' 8 7/<i 0` <5 0/14` 30/17' 150 <br /> 3/13/02 P 1661 -410 -336 <50 <0 501<0 50' <0 50/<0 50' <0 50%0 50' <0 50/<O 50' 1 0 1 0a <br /> 6/28/2002 P 1446 -1 95 216 <500 <5 <5 0 8 <5 — <0 5 1 1 <br /> KU5 BP AAC01044934Quar[0iW_QTR 024Teble 1„2_3 <br />