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• Pa�f 28 Table 1 Groundwater Elevation and Analytical Data ARCO Service Station#2133 2908 Benjamin Holl 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) E-4 1122192 1901 — -1668 1 89 8,500 1,100 140 10 220 — (cont) 4122192 1805 -1572 096 6,300 730 12 110 200 — 7129/92 1963 -- -1730 -1 58 7,700 1,000 14 130 310 10/29/92 1999 -1766 -036 5 600 1,300 16 130 180 1/27193 1672 — -1439 3 27 10,000 470 26 130 270 — 4129193 1494 - -1261 1 78 14 000 1 300 22 280 520 815193 1663 -- -1430 -1 69 9,400 900 <20 160 240 11/10/93 1692 -- -1459 -029 4,400 290 <20 67 130 3/21/94 1639 — -1406 053 5,400 340 24 110 220 6127194 1614 — -1381 025 7,800 790 11 170 470 9129194 1706 -- -1473 -0 92 1,600 130 <05 33 41 -- 1218194 1665 - -1432 041 5,200 940 88 170 380 -- 3/8/95 1419 -- -11 86 246 7,900 490 5 6 130 190 6/1/95 1274 -- -1041 145 15,000 1,000 10 360 380 9111195 1496 — -1263 -2 22 10,000 1,000 <10 350 320 -- 12/5195 1523 — -1290 -027 -- — -- -- — -- 3/18196 1010 -- -7 77 513 4,700 530 35 250 350 6/18/96 1103 — -870 -0 93 -- -- -- -- -- -- 9/25196 1347 -11 14 -244 7,600 890 <10 380 190 <5 1214196 1294 -1061 053 — — -- — — — 3/19/97 NP 7 43 -510 5 51 1,600 120 8 4 38 <5 — 6/5197 1008 — -7 75 -2 65 -- — -- -- — - 8119/97 NP 1157 — -924 -149 1,600 83 7 8 6 3 76 110 11/25/97 P 11 27 -894 030 — — — -- — -- 3119/98 NP 547 -314 680 110 3 6 <0 50 <0 SO <0 50 14 E-5 8126188 245 — — -- -- -- 2,690 390 270 870 -- 11/28/88 -- - 580 140 110 420 — 2/27189 — — -- - 1 770 200 200 1,400 — 5130/89 — — -- — 2,430 36 260 1,670 — 8122/89 - — -- — — 3,110 130 240 1,720 — 1214189 — — — -- 600 40 120 1,030 — 114190 1751 -- -1506 — — — -- -- — — 2/1190 1732 — -1487 019 — -- -- -- -- — 7G600-019-01/GW Tables