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TALI S ,
<br /> HISTORICAL GROUNDWATER MONITORING DATA -
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way
<br /> Stockton,Califoinia
<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 tnsl) (feet bgs) (feet msl) (feet bgs) pgIL pg/L pg/L pg/L pgIL pg/L (ppm) Observations
<br /> MW-5 39 2116/95 928 35 78 -2650 370 180,000 8,500 15,000 2,200 12,000 NA NA No FP,No S,O=NE
<br /> 55 5/17195 928 31 23 -21 95 22,000 3,400 2,100 390 2,400 NA NA No FP,No S,O=NE
<br /> 55 8115195 928 30 83 -21 55 32,000 4,200 3,500 410 2,500 NA NA No FP,No S,Yes 0
<br /> 55 11/29/95 928 3100 -2172 52,000 8,300 8,100 810 4,100 NA NA No FP,No S,Yes 0
<br /> 2/27196 928 28 19 -1891 20,000 3,200 1,900 440 1,800 NA NA No FP,No S,Yes 0
<br /> 55 5115/96 928 2666 -17 38 43,000 6,500 5,000 790 3,400 <500*[]] NA No FP,No S,Yes O
<br /> 8/22/96 928 2714 -17 86 58,000 8,700 8,200 880 4,500 <500*[1] NA No FP,No S,Yes O
<br /> 11/25/96 928 2733 -18 05 53,000 7,000 6,100 800 4,000 X600**[1] NA No FP,No S,Yes O
<br /> 2124197 928 23 30 -1402 40,000 4,400 4,700 590 3,100 <700**[1] NA No FP,No S,Yes O
<br /> 5/19/97 928 23 21 -1393 43,000 5,500 4,300 660 3,800 <300*[I] NA No FP,No S,Yes O
<br /> 54 8121197 928 2429 -15 01 32,000 5,200 3,900 560 3,100 <1,000[1]** NA No FP,No S,Yes 0
<br /> 55 11/17/97 928 2533 -1605 10,000 1,700 1,300 210 1,100 <500**[]] NA No FP,No S,Yes O
<br /> 55 219198 928 2262 -1334 4,700 740 520 110 520 <25** [1] NA No FP,No S,Yes O
<br /> 54 5121198 928 1876 -948 1,380 167 148 264 125 <100 NA No FP,No S,Yes 0
<br /> 54 8/12198 928 1996 -1068 2,450 472 250 642 284 <20 NA No FP,No S,Yes O
<br /> 54 11/9/98 928 2009 -1081 13,800 2,490 1,890 337 15640 <2 NA No FP,No S,Yes O
<br /> 54 2/17199 928 1926 -998 3,130 438 285 864 386 <2 NA No FP,No S,Yes O
<br /> 54 5125199 928 1865 -9 37 11,800 2,060 1,060 <100 1,380 <2 NA No FP,No S,Yes O
<br /> 54 8/18199 928 1980 -1052 34,400 23,800 1,130 342 1,500 <2 NA No FP,No S,Yes O
<br /> 54 12117199[2] 928 2063 -11 35 <50 336 0 616 0 565 204 <2 NA No FP,No S,O=NE
<br /> 54 02/22/00[3] 928 1942 -10 14 3,280 942 169 134 415 <2 NA No FP,No S,Yes 0
<br /> 55 6122100 928 18 58 -930 1,170 170 39 31 106 <2 NA No FP,No S,Yes O
<br /> 8130/00 928 1962 -1034 32,800 3,460 2,970 664 4,010 <2 NA No FP,No S,Yes O
<br /> 11/21/00 928 2037 -11 09 1,920[4] 391 36 1 744 233 <2 NA No FP,No S,Yes O
<br /> 2115101 928 2042 -11 14 357[6] 269 5 19 487 17 5 <2 09 No FP,No S,O=NE
<br /> 5117101 928 1965 -1037 1,300[5] 239 186 383 87 8 <2 1 1 No FP,No S,Yes O
<br /> 8/16/01 928 2100 -11 72 3,400 540 42 43 230 <2 26 No FP,No S,Yes 0
<br /> Arco2 M QUARI ERLY DAT A X LS
<br /> 5 ors Delta
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