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! TA l • <br /> HISTORICAL GROUNDWATER MONITORING DATA <br /> Former ARCO Service Station No 2168 <br /> 441 Charter Way <br /> Stockton California <br /> Elevation <br /> Top of Static Water Water Depth to Ethyl Total Dissolved <br /> Well ID Casing(feet Level Elevation Screen TPHG Benzene Toluene benzene Xylenes MtBE Oxygen <br /> &Sample Date msl) (feet bgs) (feet msl) (feet bgs) ug/L ug/L ug/L ug/L ug/L ug/L (ppm) <br /> MW-1B 12/6/2001 2337 -13 11 77[8] 30 063 22 13 <0 50 1 1 <br /> (cont) 2/14/2002 2171 -1145 <50 58 068 <0 50 076 <0 50 17 <br /> 6/132002 2206 -1190 <50 3 6[11] <0 50 <0 50 0 60[11] <0 50 13 <br /> 8/22/2002 2314 1288 <50 28 <0 50 <0 50 052 <0 50 1 1 <br /> 11/13/2002 2400 1374 <50 70 <0 50 <0 50 <0 50 <0 50 -- <br /> 2/12/2003 -- -- Not Sampled <br /> MW-1C 8/30/2000 1021 2219 1199 1050 537 63 <2 <2 406 <2 NA <br /> 11/21/2000 2169 1149 62 3[4] 569 121 0 999 351 <2 NA <br /> 2/15/2001 2180 1159 <50 988 142 164 259 <2 08 <br /> 5/17/2001 2123 1102 <50 909 0 708 157 118 <2 1 1 <br /> 8116/2.001 2266 -1245 <50 42 065 <0 5 083 <2 24 <br /> 12/6200/ 2357 -1336 <50 93 <0 50 14 072 <0 50 13 <br /> 2/14/2002 2217 -1196 <50 10 059 18 17 <0 50 18 <br /> 6/13/2002 2241 -1220 48[11] <050 09[11] 066[11] <050 <050 13 <br /> 8/22/2002 2329 1308 <50 40 <0 50 1 l 099 <0 50 13 <br /> 11/13/2002 2439 -1417 <50 <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 2/12/2003 - Not Sampled <br /> MW 2 53 2/16/1995 1083 3748 -2665 330 36,000 6,300 4 600 610 2,700 NA NA <br /> 5/17/1995 Welllnaccesstble <br /> 53 8/15/1995 3245 2162 20 000 3,500 2,000 280 1,300 NA NA <br /> 53 11/29/1995 3262 -2179 30 000 3 800 2,700 380 1 800 NA NA <br /> 2/27/1996 2997 19 04 Well not sampled <br /> 53 5/15/1996 2816 1733 16,000 2,600 1000 210 910 <200**[1] NA <br /> 53 8/22/1996 2876 -1793 34,000 5 900 2,500 560 2,300 <300**[1] NA <br /> 11/25/1996 2895 -1812 26,000 4,000 2000 390 1,800 <300*[1] NA <br /> 2/24/1997 2495 -1412 22,000 3,100 1,300 340 1,400 <500**[1] NA <br /> 5/19/1997 2484 -1401 28,000 4,700 1900 480 2,200 <300*[11 NA <br /> 52 8/21/1997 25 92 -1509 15,000 3,000 1,200 320 1,200 <500**jl] NA <br /> 53 11/17/1997 2694 -1611 2200 510 120 44 130 <100**[1] NA <br /> 53 2/9/1998 2433 1350 15,000 3,700 790 440 1,000 <500**[1] NA <br /> 52 521/1998 2038 955 10 200 2,220 562 238 628 <100 NA <br /> 52 8/12/1998 2057 974 1 100 234 390 238 494 <2 NA <br /> 52 11/9/1998 2167 1084 4 420 1,050 212 116 278 <2 NA <br /> 52 2/17/1999 2098 -10 15 8 450 1,790 332 266 499 <2 NA <br /> 52 5/25/1999 2028 -945 1 720 469 479 578 764 <2 NA <br /> 52 8/18/1999 2140 40 57 8,870 2,610 176 316 411 <2 NA <br /> 52 12117199[2] 2224 -1141 1,090 309 796 128 5 <2 NA <br /> K 115 BP ARC01021681Quarter1yl1 QTR 0312168 GWMR 1903 <br /> 2 00 <br />