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• TAI -
<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 ms]) (feet bgs) (feet ms1) (feet bgs) lig/L 1rg/L µg/1- µ811- lig/L µg/- (ppm) Observations
<br /> MW-1C 8/30100 1021 22 19 -1198 1050 53 7 63 <2 <2 406 <2 NA No FP,No S,Yes 0
<br /> l 1!21100 2169 -1148 62 3[4] 569 121 0 999 3 51 <2 NA No FP,No S,Yes 0
<br /> 2/15/01 21 80 -1159 <50 9 88 142 164 259 <2 08 No FP,No S,O=NE
<br /> 5117/01 2123 -1102 <50 909 0 708 157 1 18 <2 1 1 No FP,No S,Yes 0
<br /> 8/16101 2266 -1245 <50 42 065 <05 083 <2 24 No FP,No S,No0
<br /> 1216/01 2357 -13 36 <50 93 <0 50 14 072 <0 50 13 No FP,No S,Yes 0
<br /> 2114102 22 17 1196 <50 10 059 18 1 7 <0 50 18 No FP,No S,Yes 0
<br /> 6113102 2241 1220 <50 48[11] <050 091(11] 066[11] <050 13 No FP,No S,No0
<br /> MW 2 53 2116195 1083 3748 -2665 330 36,000 6,300 4,600 610 2,700 NA NA No FP,No S,O=NE
<br /> 5117195 Well Inaccessible
<br /> 53 8115195 3245 -2162 20,000 3,500 2,000 280 1,300 NA NA No FP,No S,Yes O
<br /> 53 11/29/95 3262 -2179 30,000 3,800 2,700 380 1,800 NA NA No FP,No S,Yes 0
<br /> 2/27/96 2987 -1904 Well not sampled
<br /> 53 5115196 28 16 1733 16,000 2,600 1,000 210 910 <200**11] NA No FP,No S,Yes 0
<br /> 53 8/22196 2876 1793 34,000 5,900 2,500 560 2,300 <300**[11 NA No FP,No S,Yes 0
<br /> 11/25/96 28 95 1812 26,000 4,000 2,000 390 1,800 <300*[1] NA No FP,No S,Yes 0
<br /> 2124197 2495 14 12 22,000 3,100 1,300 340 1,400 <500**[I] NA No FP,No S,Yes O
<br /> 5/19/97 2494 1401 28,000 4,700 1,900 480 2,200 <300*[1] NA No 1"P,No S,Yes 0
<br /> 52 8121197 2592 -1509 15,000 3,000 1,200 320 1,200 <500**[l] NA No FP,No S,Yes 0
<br /> 53 11117/97 2694 -16 1 1 2,200 510 120 44 130 <100**[I] NA No FP,No S,No 0
<br /> 53 2/9198 2433 -13 50 15,000 3,700 790 440 1,000 <500**[l] NA No FP,No S,Yes 0
<br /> 52 5121198 2038 955 10,200 2,220 562 238 628 <100 NA No FP,No S,Yes 0
<br /> 52 8/12199 2057 -974 1,100 234 390 238 494 <2 NA No FP,No S,Yes 0
<br /> 52 1119198 2167 -1084 4,420 1,050 212 116 278 <2 NA No FP,No S,Yes 0
<br /> 52 2117/99 2098 -10 15 8,450 1,790 332 266 499 <2 NA No FP,No S,Yes 0
<br /> 52 5125!99 2028 -945 1,720 469 479 578 764 <2 NA No FP,No S,Yes 0
<br /> 52 8118199 2140 -1057 8,870 2,610 176 316 411 <2 NA No FP,No S,Yes 0
<br /> 52 12/17/99[2] 2224 -1141 1,090 309 796 12 8 5 <2 NA No FP,No S,O=NE
<br /> 52 2122!00 21 37 1054 4,510 1,500 138 151 207 <2 NA No FP,No S,Yes 0
<br /> 53 6122100 20 19 -936 735 141 17 12 22 <2 NA No FP,No S,Yes 0
<br /> 8!30100 2239 -1156 8,200 2,310 204 259 322 <2 NA No FP,No S,Yes 0
<br /> 11/21/00 2196 -11 13 1,140[41 210 174 23 3 51 5 <2 NA No FP,No S,Yes 0
<br /> 2/15/01 21 89 -1 l 06 1,240[6] 161 <5 0 522 11 1 <2 10 No FP,No S,O=NE
<br /> 5/17101 2127 -1044 389[51 289 <2 5 456 <2 5 <2 1 5 No FP,No S,Yes 0
<br /> 8/16/01 2257 -1174 470 73 <0 5 34 40 <2 29 No FP,No S,Yes 0
<br /> 12/6101 23 55 -1272 <2,000 26 <20 <20 <20 <5 0* 1 3 No FP,No S,Yes 0
<br /> 2/14102 2202 -11 19 1,800 300 31 60 54 <0 50 16 No FP,No S,Yes 0
<br /> 6/13/02 2236 1153 2,000 280 14 44 46 <2 5[10] 09 No FP,No S,Yes 0
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<br /> Arc0_2i66_Quffl1er1y_Data A3
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