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Table 1 Papof 28 Groundwater Elevation and Analytical Data ARCO Service Station#2133 2908 Benjamin Holt Dr,Stockton,Califomia 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 3 5/10/90 1747 -- -1518 -032 - - -- - -- (cont) 5124190 1742 -- -1513 005 - -- -- - - - 6/5/90 1738 - -1509 004 -- - - -- - 6118/90 Dry - -- -- 7112190 1819 -- -1590 -- - - -- - - - 8/16190 Dry - -- 9117190 1832 - -1603 - - - - -- - - 9119190 1832 - -1603 000 -- -- - -- - -- 10/11t90 Dry - - -- 1216190 Dry -- -- -- - - - -- -- - 2A 1/91 1830 -- -16 01 -- - - -- - - - i 2125191 1826 -- -1597 004 - - - - - 4123191 1779 -- -1550 0 47 - - - -- - - 7/15/91 Dry -- - -- -- - -- - - 1018/91 Dry -- 1022191 Dry - 4122!92 Dry - - - - - - - - 7129192 Dry - 10/29/92 Dry - -- - -- -- - -- - 1127193 1669 -1440 -- 57,000 2,700 180 660 1,900 - 4129193 1493 - -1264 1 76 32,000 3 400 140 930 2,500 - 815193 1670 - -1441 -1 77 27,000 1,800 69 670 1,400 11/10/93 1714 - -1485 -0 44 47,000 1,700 <SO 740 2,000 3121194 1660 - -1431 0 54 24,000 1,500 86 620 1,500 - 6127194 1625 -- 1396 035 19,000 1,500 36 670 1,400 - 9129194 1704 -- -1475 -079 24,000 1,600 77 630 1,300 1218194 1668 -1439 0 36 21,000 2,700 58 890 1,900 3/8/95 '4 20 -1191 2 48 94,000 1,600 130 640 2,600 611195 1268 - -1039 1 52 58 000 1,900 24 590 2,500 9111195 1501 -- -1272 -233 29,000 1900 <50 640 1 900 1215195 1522 - -1293 -021 - -- - - -- - 3118196 1040 - -811 482 15,000 480 12 390 660 - 6118196 1105 - -876 -065 - - -- - -- -- 9/25196 1352 - -1123 -247 7,600 160 <5 160 300 <50 7G600-019-011GW Tables