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•Table 1 * of 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#595 <br /> 6100 North Highway 99, Stockton CA <br /> Well Depth Groundwater Ethyl MTBE MTBE <br /> Well Date Elevation to Water Elevation TPH-G Benzene Toluene benzene Xylenes 8020 8260 DO <br /> Name Sampled (feet,MSL) (feet,TOC) (feet,MSL) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> 6116100 NP 35 55 5765 -2210 1340 73 4 6 69 945 164 <12 5 <2 0 NM <br /> 9119100 NP 3555 6068 -2513 2 990 189 182 676 115 <50 0 242 0 3 <br /> MW-1 1112100 P 3555 6074 -2519 3,000 258 46 7 105 196 <25 0 2 5 2 9 <br /> 6116/00 NP 32 94 5572 -2278 655 28 0 882 2 58 194 179 116 NM <br /> 9/19100 NP 32 94 5843 -2549 495 364 <0 50 <0 50 1 45 760 936 0 6 <br /> MW-2 1112100 P 3294 5942 -2648 428 126 <0 50 177 204 808 71 2 8 <br /> 6116100 NP 3361 5635 -2274 226 2 89 <0 50 2 84 102 929 869 NM <br /> 9119100 NP 3361 5901 -2540 217 0 582 <0 50 <0 50 <0 50 <2 5 <2 0 0 5 <br /> MW-3 11/2100 P 3361 5911 -2550 162 <0 50 <0 50 <0 50 <0 50 120 11 1 3 <br /> 6116/00 NP 3377 56 56 -2279 8,910 2 310 <0 50 839 1,520 3,680 3,200 NM <br /> 9119!00 NP 3377 5924 -2547 18,900 2 240 <20 0 693 2,230 2,240 2 510 0 4 <br /> MW-4 11/2100 P 3377 5869 -24 82 9,230 1,740 <50 0 154 951 1,990 2,200 17 <br /> WSW 1112100 NM NM NM <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <2 0 NM <br /> TOC =Top of Casing <br /> MSL =Mean Sea Level <br /> TPH-G =Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015, Modified <br /> MTBE 8020=Methyl Tertiary Butyl Ether by EPA Method 8020 <br /> MTBE 8260=Methyl Tertiary Butyl Ether by EPA Method 8260 <br /> P1NP =Well purged/not purged prior to sample collection <br /> < =Below detection limits <br /> ppb =parts per billion <br /> mgll =milligrams per liter <br /> NM =Not measured <br />