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OE I
<br /> Groundwater Elevation and Analytical Data
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way
<br /> Stockton,California
<br /> Elevation
<br /> Top of Static Water Groundwater Depth to Ethyl- "total Dissolved
<br /> Well ID Casing(feet Level Elevation Screen(feet TPHg Benzene Toluene benzene Xylenes MtBE Oxygen
<br /> &Sample Date msl) (feet bgs) (feet msl) bgs) pg/L pg/L pg/L gg/L µg/L nfl- mg/L
<br /> MW-7 2/16/1995 Well Inaccessible
<br /> 5/17/1995 888 3050 -2162 300 40,000 2,300 8,200 820 4,800 NA NA
<br /> 48 8/15/1995 3041 -2153 30,000 1,400 4,400 490 2,800 NA NA
<br /> 48 11/29/1995 3056 -2168 45,000 2,100 6,400 800 3,600 NA NA
<br /> 2/27/1996 2775 -1887 40,000 2,700 7,800 740 4,000 NA NA
<br /> 48 5/15/1996 2613 -1725 38,000 2,500 7,300 790 4,100 <500*[1] NA
<br /> 8/22/1996 2667 -1779 52,000 4,400 9,900 790 4,600 <500*[1] NA
<br /> 11/25/1996 2687 -1799 52,000 3,500 9,100 810 4,700 <600**[1] NA
<br /> 2/24/1997 2289 -1401 25,000 1,300 3,700 500 2200 <700**[1] NA
<br /> 5/19/1997 2277 -1389 19,000 970 2,800 390 1,700 <300*[1] NA
<br /> 47 8/21/1997 23 89 -1501 19,000 1 100 2,600 490 2,000 <500**[1] NA
<br /> 48 11/17/1997 2491 -1603 2,300 120 190 20 100 <50[l] NA
<br /> 47 2/9/1998 2221 -1333 21,000 1,100 2,800 660 2,700 4,400[l] NA
<br /> 47 5/22/1998 1836 -9 48 9,580 593 919 282 942 <100 NA
<br /> 47 8/12/1998 18 57 -969 5,690 289 460 197 628 <2 NA
<br /> 47 11/9/1998 1968 -1080 4,970 406 612 119 520 <2 NA
<br /> 47 2117/1999 1890 -1002 42,300 3,650 8,230 942 5,030 <2 NA
<br /> 35 5/25/1999 1831 -943 9,910 944 1,910 287 1,550 <2 NA
<br /> 47 8/18/1999 1938 -1050 10,400 681 1,040 331 1,500 <2 NA
<br /> 47 12117199[2] 2030 -1142 1,790 833 269 9 66 808 <2 NA
<br /> 47 2/22/2000 1936 -1048 2,240 159 9 8 14 9 399 <2 NA
<br /> 41 2/22/2000 1799 -911 33,900 6,560 1,130 1,090 4,610 <2 NA
<br /> 8/30/2000 1926 -1038 1,590 22 19 5 49 102 <2 NA
<br /> 11/21/2000 1996 -1108 2,260[6] 106 768 542 216 <2 NA
<br /> 2/15/2001 1997 -1109 18,400[7] 1,400 2,530 656 2,420 <2 12
<br /> 0511701 19 22 -1034 2,320[5] 207 I 1 9 407 99 1 <10 0 8
<br /> 8/16/2001 2059 -1171 2,200 30 14 49 95 <2 0 6
<br /> 12/6/2001 2163 -12 75 6,800 580 270 210 930 <5 0* 0 9
<br /> 2/14/2002 2003 -11 15 62[g] <0 50 <0 50 053 <0 50 <0 50 24
<br /> 6/13/2002 2035 -1147 1,400[8] 2 9 4 0 12 13 <0 50 14
<br /> 8/22/2002 2138 -12 50 1,400 11 <5 0 IS 10 <0 50 0 9
<br /> 11/13/2002 2233 -1345 1,400 40 <10 18 34 <10 --
<br /> 2/12/2003 23 16 -1428 820 <5 0 <5 0 <5 0 <5 0 <5 0 2 0
<br /> 5/29/2003 2080 -1192 380 <0 5 <0 5 19 13 <1 0 5 0
<br /> 8/4/2003 2141 -12 53 620 <0 50 <0 50 <0 50 <0 50 <0 50 2 0
<br /> 1113!2003 2250 -1362 320 <2 5 <2 5 <2 5 <2 5 <2 5 196
<br /> MW-8 8/30/2000 935 18 85 -950 150 115 <2 0 <2 0 <2 0 <2 0 <2 0 NA
<br /> 11/21/2000 1930 -9 95 <50 <0 50 <0 50 <0 50 <0 50 <2 0 NA
<br /> 2/1512001 1983 -948 <50 <0 50 <0 50 <0 50 <0 50 <2 0 12
<br /> 5/1712001 1890 -9 55 <50 <0 50 <0 50 <0 50 <0 50 <2 0 2 6
<br /> 8/16/2001 20 12 -1077 <50 <0 50 <0 50 <0 50 <0 50 <2 0 0 9
<br /> 12/6/2001 1829 -894 <50 <0 50 <0 50 <0 50 <0 50 <0 50 16
<br /> k V5 SP ARCOM021685Quarterly12168 GWMR 4Q03 xls
<br /> Page 7 of 9
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