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• � Page�2 of zs <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 112133 <br /> 2908 Benjamin Holt Dr,Stockton,California <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mgll <br /> E-9 10/11/90 1824 -- -1668 -009 — — — - - - <br /> (cont) 1216!90 1811 -- -1655 013 — -- — — -- - <br /> 2112191 1780 -1624 0 31 18 000 2,600 130 610 4,700 — — <br /> 2125191 1876 -1720 -0 96 -- -- -- — — _ <br /> 4123191 1689 -1533 187 — - - <br /> 7115191 Dry -- -- -- <br /> 10/13/91 <br /> 10/8/91 Dry - -- <br /> 1/22J92 <br /> 1122192 18 24 - -1668 -- -- — -- -- -- - - <br /> 4122192 1745 -- -1589 079 3 600 170 10 50 120 -- <br /> 7129192 Dry — -- -- -- — -- - <br /> 10/29/92 1719 -1563 -- 8,900 480 32 440 1 100 -- <br /> 1127193 1610 — -1454 1 09 12,000 390 25 310 730 — <br /> 4129193 14 19 - -1263 1 91 12 000 270 <98 150 380 <br /> 815193 1583 -1427 -1 64 16 000 370 22 220 460 -- - <br /> 11110/93 1618 -1462 -0 35 12 000 210 21 200 390 <br /> 3121194 15 51 - 1395 067 6 300 170 24 200 320 — <br /> 6127194 1534 - -1378 017 10 000 780 18 660 980 - <br /> 9l29194 1636 — -1480 -1 02 8 800 430 14 470 630 - — <br /> 1218194 1597 -1441 039 7 800 450 20 610 810 - <br /> 318195 1354 — -11 98 243 8,600 100 <20 230 260 -- — <br /> 611195 1202 -1046 152 24,000 550 38 870 2,000 <br /> 9111195 1422 — -1266 -220 150,000 1 700 7,600 3,000 14,000 — - <br /> 12l5195 1458 — -1302 -036 45,000 960 1,500 1,000 3,200 - — <br /> 3118196 9 62 -806 496 8 800 290 130 240 490 — — <br /> 6/18196 1035 — -879 -073 1,600 110 32 69 91 110 - <br /> 9125196 1282 -- -1126 -247 2,800 130 <5 180 46 83 - <br /> 1214/96 1220 -- -1064 0 62 2,800 290 32 250 80 560 -- <br /> 3119/97 NP 7 72 -- -616 448 <50 <0 5 <05 <05 <0 5 <5 014 <br /> 615197 NP 939 -- -783 -1 67 <50 <0 5 <0 5 <05 <0 5 8 5 0 23 <br /> 8119197 NP 1084 — -928 -1 45 <50 <05 <0 5 <05 <0 5 <5 019 <br /> 11/25/97 NP 11 10 - -9 54 -026 <50 <05 <0 5 <0 5 <05 <5 — <br /> 3119198 P 480 -- -324 630 <50 <0 5 <0 5 <0 5 <0 5 320 09 <br /> 6124198 NP 676 -- -520 -196 <50 <0 5 <0 5 <0 5 <0 5 <5 2 2 <br /> 9110198 NP 859 -703 -1 83 <50 <05 <05 <0 5 <0 5 <5 ND <br /> 12/17/98 NP 861 -- -705 -002 <50 <0 5 <0 5 <0 5 <0 5 15 0 -- <br /> 1 <br /> 7G600-019-011GW Tables <br />