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i TAP <br /> i 9 <br /> Groundwater Elevation and Analytical Data Page 4 of 14 <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,California <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevation to Water thickness Elevation Elevation Change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE 00 <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg1l) <br /> ATR-3 8130193 12 43 Sheen 3750 -094 <br /> (Cont) 10/27/93 1239 Sheen 3754 004 _ — — <br /> 2118194 1200 3793 039 1,900 200 27 120 140 — -- <br /> 5120194 1207 Sheen 3786 -007 -- — -- <br /> I Of7/94 <br /> -10fT194 1238 Sheen 3755 -0 31 <br /> 12/16/94 1203 Sheen 37 90 035 <br /> 2128195 1205 003 3790 000 <br /> 4126195 1232 Sheen 37 61 -029 <br /> 7127195 1251 — 3742 -019 - <br /> 10/26/95 (c) 1297 — _ <br /> 2112196 1210 — — -- 1,500 89 <0 5 43 150 — -- <br /> 4/18/96 1260 <br /> 7118196 1260 -- — 1,600 26 5 2 70 51 1,800 — <br /> 11/15/96 1340 <br /> 3114197 NP 1334 - -- 1,200 10 <05 43 19 620 005 <br /> 614197 1270 — — - -- — — -- -- -- 015 <br /> 8111197 NP 1272 3,400 20 <10 160 110 <50 <br /> 11/17/97 1293 <br /> 3130198 NP 1218 -- _ <br /> -- 6400 <2 5 <2 5 100 52 120 0 8 <br /> 6125198 1241 <br /> 9111198 NP 1284 -- -- 1,100 61 <0 5 25 22 41 1 23 <br /> 12/15/98 1160 — — -- -- — — 21 <br /> ATR-4 4123187 4903 1085 - 3818 -- 21 000 3,000 200 <10 950 <br /> 12/22/87 1100 — 38 03 -015 — 5,300 310 430 270 -- <br /> 3124188 1098 -- 38 05 002 6 000 5 800 320 930 740 — <br /> 6123188 1211 -- 36 92 -1 13 5,200 237 8 B 2 10 <br /> 9129188 1072 — 38 31 1 39 1,400 1,430 115 350 130 <br /> 2122189 1091 — 3812 -019 22,000 1,300 82 54 170 — _ <br /> 6129189 1100 — 38 03 -009 1,300 590 38 97 220 _ <br /> 9118189 11 19 — 3784 -019 630 280 13 49 100 — <br /> 12/28/89 11 08 - 3795 Oil 1,300 500 25 56 160 _ — <br /> 4/18/90 11 25 — 3778 -017 440 150 51 35 63 — <br /> 10/16/90 11 38 -- 37 65 -013 380 26 41 4 8 038 — — <br /> 1110191 11 16 — 3787 022 330 ISO 31 30 35 — <br /> 4l10191 10 99 -- 38 04 017 500 8 4 <0 5 <0 5 24 _ <br /> 7110191 1132 -- 37 71 -033 190 39 <0 5 37 3 _ <br /> — <br /> 9124/91 11 57 — 37 46 -025 70 22 <05 4 2 1 5 <br /> 1123192 11 16 — 3767 0 41 1,200 300 5 2 49 72 -- -- <br /> 7G60O-026-001/GW Tables <br />