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TAB101 •
<br /> HISTORICAL.GROUNDWATER MONITORING DATA
<br /> Foimer 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 TPl-1G Benzene Toluene benzene Xylenes MTBE Oxygen
<br /> &Sample Date msl) (feet bgs) (feet msl) (feet bgs) pg/L liglL µg/L fig/L ltg/L pg/L (ppm) Observations
<br /> MW-1C 8130100 1021 22 19 -1198 1050 537 63 <2 <2 406 <2 NA No FP,No S,Yes 0
<br /> 11/21/00 1021 2169 -1148 62 3 [4] 569 121 0 999 3 51 <2 NA No FP,No S,Yes 0
<br /> 2/15101 1021 2180 -1159 <50 988 1 42 1 64 259 <2 08 No FP,No S,O=NE
<br /> 5117101 1021 21 23 -1102 <50 909 0 708 l 57 1 18 <2 1 1 No FP,No S,Yes O
<br /> 8/16101 1021 2266 -124S <50 42 065 <0 5 083 <2 24 No FP,No S,No O
<br /> MW-2 53 2116/95 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 10 83 3245 -21 62 20,000 3,500 2,000 280 1,300 NA NA No FP,No S,Yes 0
<br /> 53 11/29/95 10 83 3262 -21 79 30,000 3,800 2,700 380 1,800 NA NA No FP,No S,Yes O
<br /> 2/27196 10 83 2987 -1904 Well not sampled
<br /> 53 5115/96 10 83 28 16 -1733 16,000 2,600 1,000 210 910 <200**[1] NA No FP,No S,Yes O
<br /> 53 8122196 10 83 2876 -1793 34,000 5,900 2,500 560 2,300 <300**[1] NA No FP,No S,Yes 0
<br /> 11/25/96 10 83 28 95 -18 12 26,000 4,000 2,000 390 1,800 <300*[1] NA No FP,No S,Yes 0
<br /> 2124197 10 83 2495 -14 12 22,000 3,100 1,300 340 1,400 <500**[1] NA No FP,No S,Yes 0
<br /> 5119197 10 83 2484 -1401 28,000 4,700 1,900 480 2,200 <300*[1] NA No FP,No S,Yes 0
<br /> 52 8121197 1083 25 92 -1509 15,000 3,000 1,200 320 1,200 <500**[1] NA No FP,No S,Yes O
<br /> 53 11/17/97 1083 2694 -1611 2,200 510 120 44 130 <100**[1] NA No FP,No S,No O
<br /> 53 219/98 1083 2433 -13 50 15,000 3,700 790 440 1,000 <500**[1] NA No FP,No S,Yes O
<br /> 52 5121/98 1083 2038 -955 10,200 2,220 562 238 628 <100 NA No FP,No S,Yes O
<br /> 52 8/12/98 1083 2057 -974 1,100 234 390 23 8 494 <2 NA No FP,No S,Yes O
<br /> 52 11/9/99 1083 21 67 -1084 4,420 1,050 212 l 16 278 <2 NA No FP,No S,Yes O
<br /> 52 2/17/99 1083 2098 -10 15 8,450 1,790 332 266 499 <2 NA No FP,No S,Yes O
<br /> 52 5/25199 1083 2028 -945 1,720 469 479 578 764 <2 NA No FP,No S,Yes O
<br /> 52 8/18/99 1083 2140 -1057 8,870 2,610 176 316 411 <2 NA No FP,No S,Yes O
<br /> 52 12/17199[2] 1083 2224 -1141 1,090 309 796 12 8 5 <2 NA No FP,No S,O=NE
<br /> 52 2/22/00 1083 21 37 -1054 4,510 1,500 138 151 207 <2 NA No FP,No S,Yes 0
<br /> 53 6/22100 i 0 83 20 19 -936 735 141 17 12 22 <2 NA No FP,No S,Yes 0
<br /> 8/30/00 1083 2239 -1156 8,200 2,310 204 259 322 <2 NA No FP,No S,Yes 0
<br /> 11/21/00 1083 21 96 -11 13 1,140[4] 210 174 233 51 5 <2 NA No FP,No S,Yes 0
<br /> 2/15101 10 83 21 89 -1106 1,240[6] 161 <5 0 522 111 1 <2 10 No FP,No S,O=NE
<br /> 5/17/01 1083 21 27 -1044 389[5] 289 <2 5 456 <2 5 <2 15 No FP,No S,Yes O
<br /> 8116101 10 83 2257 -1174 470 73 <0 5 34 40 <2 29 No FP,No S,Yes 0
<br /> Arco2168 QUAR1 ERLY DAI A XLS
<br /> 2 of 8 Delta
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