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f Table 2-Groundwater Chemical Analytical Data Former Unocal Service Station#0187 437 East Miner Avenue Stockton,California Sample Sample TOC DTW GWE TPHg Benzene Toluene Ethylbenzene Xylenes MtBE11 TBA D1PE ETRE TAME No Date (feet MSL) (feet) (feet MSL) (ppb) (ppb) (ppb) (ppb) (ppb) ( b) (Ppb) (ppb) (ppb) (ppb) U-18 11/20/00 1166 2642 -1476 <50 0 <0 500 <0 500 <0 500 <0 500 <5 001<2 00 <100 <2 00 Q 00 Q 00 U-19 11/20/00 1203 2721 -15 18 3,210j ' 810 201 156 113 <1001<5 00 <250 <5 00 <5 00 <5 00 1217100 1203 368/1,200f�113I 80 0/3681" 10 6112 21;1 4 11157 7131 18 1/581131 U-20 11/20/00 1219 2737 -15 18 <50 0 0 782 <0 500 <0 500 <0 500 <5 001<2 00 <100 <2 00 <2 00 <100 U-21 11/20/00 1197 2752 -1555 2,530"1 706 171 161 506 <5 00/Q 00 <100 <2 00 <2 00 <2 00 1217100 1197 ---- 2,85013,260121131 843/923131 27 325 5131 180/2031;1 64 5162 6131 ---- ---- ---- ---- ---- U-22 11/20100 1231 2734 -1503 <50 0 <0 500 <0 500 <0 500 <0 500 <5 0013 06 <100 <2 00 Q 00 <2 00 U-23 11/20/00 1238 2773 -1535 <50 0 0 557 569 103 622 <5 001Q 00 <100 <2 00 <2 00 Q 00 U-24 11/20/00 1206 2650 -1444 <50 0 <0 500 <0 500 <0 500 <0 500 <5 00/Q 00 <100 <2 00 <2 00 <2 00 U-25 11/20/00 1192 2468 -1276 <50 0 <0 500 531 0 958 588 <5 00/<2 00 <100 <2 00 Q 00 Q 00 UV-1 1120100 1105 2488 -1383 Well only monitored not sampled I UV-2 11/20/00 1106 DRY ---- Well only monitored,not sampled UV-3 11/20/00 1137 DRY ---- Well only monitored,not sampled NP-1-22 112020001'1 1062 2478 -14 16 16,70011 1,010 102 1,800 2,230 Q50/Q0 0 <1000 QO 0 <20 0 QO 0 1217100 1062 ---- --- 16,80011 1,100 100 1,860 2,040 ---- ---- ---- ---- ---- NP-1-65 11202000151 1092 2492 -1400 38,490121 1,660 6,510 1,200 5,710 <1000/<66 7 <3330 <66 7 <66 7 <66 7 12!7100 1092 ---- ---- 34,20011 1,710 5,900 980 4,730 ---- --- ---- ---- ---- NP-1-1 11 ---NP-1-111 111202000161 1075 2526 -1451 21011 Ila 255 0 612 183 <5 00/Q 00 <100 <2 00 Q 00 <2 00 1217100 1075 ---- ---- 26011 129 0 666 0 585 <0 500 --- ---- ---- ---- 24004208