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<br /> Groundwater Monitoring and Analytical Data "
<br /> Former ARCO Seance Station No 2168 _
<br /> 441 Charter Way,Stockton,California
<br /> Elevation Static
<br /> Top of Water Groundwater Depth to Ethyl- Total Dissolved
<br /> Well ID Casing Level Elevation Screen TPHg Benzene Toluene benzene Xylenes MtBE Oxygen
<br /> &Sample Date (feet msl) (feet bgs) (feet msl) (feet bgs) ug/L pg/L. pg/L OWL pg/L pg/L. mg/L
<br /> MW-1 54 2/16/1995 1045 3711 -2666 355 36,000 11 000 460 990 3,200 NA NA
<br /> 53 5/17/1995 3261 -2216 38,000 12,000 790 1,100 3,400 NA NA
<br /> 54 8/15/1995 9213 -21 68 45,000 10,000 330 1,000 3 300 NA NA
<br /> 54 11/29/1995 3232 -2187 46,000 9,800 370 1,100 2,900 NA NA
<br /> 2/27/1996 Well Inaccessible
<br /> 53 5/15/1996 2788 -1743 34,000 9,400 670 1,000 2,100 <25'{11 NA
<br /> 53 8/22/1996 2650 -1805 35,000 9,100 1,000 1,000 2,000 <500'[1] NA
<br /> 11/25/1996 2871 -1826 37,000 7,900 460 870 1,500 <500'[1] NA
<br /> 2/24/1997 2466 -1421 37,000 8,300 740 900 2,200 <500'[1] NA
<br /> 5/19/1997 2454 -1409 30,000 8,200 310 780 1,100 <600'[11 NA
<br /> 54 8/21/1997 2562 -1517 28,000 8,200 380 860 1,100 <2,000""11] NA
<br /> 54 11/17/1997 2667 -1622 23,000 9,300 580 820 1,300 <1,000"11] NA
<br /> 54 2/9/1998 2409 -1364 20,000 6,800 360 700 1,100 <1'000-11] NA
<br /> 53 5/22/1998 2008 -963 20,700 6,650 413 588 1,030 <100 NA
<br /> 53 8/12/1998 2026 -981 22,000 8,690 510 785 1,220 <2 NA
<br /> 53 11/9/1998 21 40 -1095 21,300 7,420 289 628 1,020 2420 NA
<br /> 53 2/17/1999 2060 -1015 2,650 834 483 902 138 2380 NA
<br /> 53 5/25/1999 1996 -951 22,600 8,410 291 854 1,160 3080 NA
<br /> 53 8/18/1999 2195 -1150 19,400 7,860 228 670 958 1160 NA
<br /> 53 12117/99[21 21 90 -1145 15,900 5,630 121 379 579 3440 NA
<br /> 53 2/22/2000 21 13 -1068 19,700 8,830 228 800 932 1930 NA
<br /> 54 6/22/2000 1989 -944 19,900 6,020 139 401 486 1320 NA
<br /> 8/30/2000 2092 -1047 18,300 8,600 254 654 650 228 NA
<br /> 11/21/2000 21 60 -11 15 6,620[4] 1,570 703 908 199 128 NA
<br /> 2/15/2001 2167 1122 11,300(71 3,490 136 450 329 226 1 0
<br /> 5/17/2001 2090 -1045 8,630[5] 3,190 <50 197 137 243 07
<br /> 8/16/2001 2227 -11 82 13,000 4,400 130 440 300 <100' 1 9
<br /> 12/6/2001 2334 -1289 12,000[8] 5,100 <50 340 210 <50 1 1
<br /> 2/14/2002 2174 -1129 13,000 5,100 110 410 250 29 13
<br /> 6/13/2002 2206 -11 61 10,000 2,400 87 300 240 240 08
<br /> 8/22/2002 2305 -1260 13,000 5 100 160 430 330 31 10
<br /> 11/13/2002 2403 -1358 <10,000 2200 <100 <100 <100 <100 -
<br /> 2/12/2003 Not Sampled
<br /> 5/29/2003 - Not Sampled
<br /> 8/4/2003 2308 -1263 6,700 J 2,200 <50 <50 160 <50 1 1
<br /> MW-113 8/30/2000 1026 21 25 1099 750 504 160 69 12 262 <2 NA
<br /> 11/21/2000 21 36 -11 10 1,500[4] 506 165 255 553 <2 NA
<br /> 2/15/2001 21 62 -11 36 721 [7] 233 102 175 242 <2 08
<br /> 5/17/2001 2095 -1069 425[5] 158 395 909 73 <2 29
<br /> 8/16/2001 2234 -1208 67 066 <05 22 1 5 <2 20
<br /> 12/6/2001 2337 -1311 77[8] 30 0 63 22 1 3 <0 50 1 1
<br /> 2/14/2002 21 71 11 45 <50 58 068 <0 50 076 <0 50 17
<br /> k MpracessV5 SP ARC0\021681Qusr1er1y\4 QTR 0312168 GW MR 3003
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