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Table 1 Pa*f 28 Groundwater Elevation and Analytical Data ARCO Service Station#2133 2908 Benjamin Holt Dr,Stockton,California Well Depth Product Groundwater Groundwater Total Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) BHD-1 4123191 1599 — -1541 0 87 3,300 240 4 8 440 130 -- (cont) 7116191 1800 -- -1742 -201 7,000 420 420 400 830 — 1018191 1850 -- -1792 -050 3,000 220 <4 0 210 15 - 1l22192 1712 -- -16 54 138 4,600 200 240 <10 260 -- 4122192 1639 -- -1581 073 3,000 130 6 7 200 120 - 7l29l92 1793 -- -1735 -154 8,100 260 21 600 510 -- 10129l92 1835 -- -1777 -042 1,800 80 <2 5 110 17 - 1127193 1527 — -1469 308 6,700 270 19 790 300 — 4129193 1336 — -1278 1 91 7,000 340 <20 610 460 — 815193 1485 - -1427 -149 10,000 280 31 930 950 — 11/10/93 1523 -- -1465 -038 10,000 220 11 570 420 — 3121194 1436 — -1378 0 87 8,600 83 14 480 360 6127194 1430 -1372 006 9,600 110 32 490 420 9129194 1546 - -1488 -1 16 7,200 170 12 460 340 — 1218194 1499 -1441 047 8200 160 14 560 640 — 3/8l95 1281 - -1223 218 6 000 84 6 2 300 97 — 611195 11 29 — -1071 152 7,100 97 <5 370 250 9111195 1321 -- -1263 -1 92 5,600 110 6 340 270 -- 1215195 1370 — -1312 -0 49 9,200 74 <10 470 410 — 3118196 9 38 -- -880 432 4,200 99 28 360 320 -- 6118196 9 50 - -892 -012 5,500 82 <10 430 300 <100 9125196 11 80 — -11 22 -230 4,600 75 5 5 280 160 <50 12)4196 11 50 - -1092 030 4,500 83 11 350 220 <50 3/19197 P 702 - -644 4 48 2,300 54 <10 190 100 -- 615197 NP 838 — -7 80 -1 36 3,500 39 3 76 12 170 8119197 NP 998 -- -940 A 60 440 7 9 094 <0 5 <0 5 360 11/25/97 NP 1042 — -984 -0 44 1,300 2 8 085 7 9 2 8 220 3120198 P 445 — 3 87 697 490 34 3 37 24 210 1 7G600-019-011GW Tables