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• Tat 1 PagIllof 31 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton,California <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH G Benzene Toluene Ethylbenzene Xylenes MtBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mg/l <br /> E-8 8/16/90 1730 - -1633 -040 - <br /> (cont) 9117/90 1754 -- -1657 -024 -- - - - -- <br /> 9/18/90 1764 -- -1657 0 00 140 23 <0 5 1 5 16 <br /> 10/11/90 1767 -- -1670 -013 - - -- <br /> 12/6/90 -- - -- - -- - - <br /> 2/12/91 1813 -- -1716 -- 1,300 110 15 17 65 <br /> 2125191 1805 -- -1708 008 -- - - - <br /> 4123/91 1639 -- -1542 166 310 93 <0 5 <0 5 087 <br /> 7116/91 1889 -- -1792 -250 200 18 <0 5 0 7 25 <br /> 10/8/91 1946 -- .1849 -057 <50 7 8 <0 5 <G5 0 61 <br /> 1122192 17 69 -- -1672 177 250 2 8 0 6 21 <0 5 <br /> 4122192 1671 -1574 098 1,200 93 <25 37 5 3 <br /> 7129192 1821 -- -1724 -150 690 81 1 3 5 7 6 <br /> 10/29/92 1862 -- -1765 -041 620 87 <0 7 7 1 67 <br /> 1/27/93 1542 - -1445 320 960 31 <1 1 9 1 8 <br /> 4/29/93 1356 -- -1259 186 360 20 <4 2 22 1 7 <br /> 8/5/93 1528 -- -1431 -172 320 12 <0 5 2 3 1 6 <br /> 11/10/93 15 62 - -1465 -034 310 12 2 4 1 7 1 4 <br /> 3/21194 1500 - -1403 062 220 0 9 1 1 1 0 1 3 <br /> 8127194 1479 -1382 0 21 400 24 24 4 6 2 0 <br /> 9129194 1576 -- -1479 -097 670 46 <05 8 9 <0 5 <br /> 1218194 1537 -- -1440 039 190 3 5 1 1 1 2 4 <br /> 318/95 1293 -- -1196 244 200 13 <05 2 9 <0 5 <br /> 6/1/95 1146 - -1049 147 650 26 1 8 5 1 5 <br /> 9111195 1366 -- -1269 -220 370 7 4 <0 5 21 <0 5 <br /> 1215195 1400 -- -1303 -034 150 2 8 <0 5 1 1 <0 5 - <br /> 3118196 905 -- -808 495 2,000 19 <0 5 9 3 13 - <br /> 6/18/96 9 80 -- -8 83 -075 2,300 41 47 18 4 9 <5 <br /> 9125196 1228 -- -1131 -248 2,000 31 <1 14 14 <10 <br /> 12/4/96 11 73 - -1076 055 1,800 29 <5 15 <5 <50 <br /> 3/19197 NP 7 14 -- -617 459 840 19 1 1 94 0 82 01 <br /> 615197 NP 882 -- -7 85 -188 900 13 14 4 7 1 3 <5 0 2 <br /> 8119197 NP 1027 -930 -145 1,000 13 4 2 4 0 84 <5 0 2 <br /> 11/25/97 NP 1047 -- -950 -020 140 <0 5 <0 5 <0 5 <0 5 <5 <br /> 3119198 NP 419 - -322 628 <50 <0 5 <0 5 <0 5 <0 5 <5 2 4 <br /> 6124/98 NP 6 22 -- -525 -203 <50 <0 5 <0 5 <0 5 <0 5 57 1 5 <br /> 9/10198 NP 804 -- -707 -182 548 <0 5 <0 5 <0 5 <0 5 <5 <br /> 12/17/98 NP 804 - -707 000 <50 <0 5 <0 5 <0 5 <0 5 205 <br />