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Table 1 Page 5 of 14 <br /> Groundwater Elevation and Analytical Data <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 <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> ATR-4 8131193 (c) 1098 — — -- 100 33 <G5 6 13 -- <br /> (Cant) 10/27/93 1098 -- — — 200 12 12 7 9 16 -- <br /> 2/18/94 1031 — -- — 950 140 5 73 30 -- <br /> 5120194 1071 -- — -- 8,100 590 5 9 190 220 -- <br /> 1017194 11 00 — -- 1,100 30 1 16 7 3 -- <br /> 12/16/94 1061 -- -- 1,600 310 2 3 350 200 <br /> 2128/95 1068 — — 4,600 180 <5 750 100 -- <br /> 4/26/95 1094 — - — 1,100 19 <1 110 8 3 <br /> 7127/95 11 11 -- — 1,700 12 <2 5 170 8 4 -- <br /> 10/26/95 1118 — _ _ -- — <br /> 10/27/95 -- — — -- 600 7 <1 30 2 <br /> 2112/96 1043 — -- — 6,300 <0 5 <0 5 340 150 <br /> 4/18/96 1077 -- - '�' -- 770 <1 0 <1 0 41 1 9 <br /> 7118196 1052 — -- — 2 600 12 <5 52 <5 560 <br /> 11/15/96 1151 — -- — 440 <05 <05 08 2 2 140 <br /> 3114197 1157 -- - -- 150 1 5 <0 5 <0 5 <0 5 870 <br /> 614197 NP 10 93 -- — -- 420 8 7 14 12 1 3 5 4 <br /> 8/11197 NP 1055 — -- -- 320 2 4 1 1 <0 5 157 6 3 <br /> 11/17/97 NP 11 20 — — -- 420 3,3 14 <0 5 076 4 8 <br /> 3/30198 NP 1038 -- — -- <50 <05 <0 5 <0 5 <0 5 <50 <br /> 6125198 NP 1040 — — -- 65 8 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> ATR-5 3110189 48 73 — — — -- 6,600 693 <50 327 7 - <br /> 6129189 1052 -- 3821 -- 2,200 490 2 4 280 1 3 — <br /> 9118/89 1098 -- 3775 <br /> -0 46 1,000 68 1 1 63 5 B — <br /> 12/27/89 1076 -- 3797 022 2,200 94 2 150 <1 — <br /> 4118190 1090 — 37 83 -014 1,900 120 2 6 6 8 140 -- <br /> 10/16/90 -- - — — 1,000 18 47 79 16 -- <br /> 10/19/90 11 10 -- 3763 — — _ _ — — — <br /> 1110/91 1084 -- 3789 026 350 71 1 2 16 2 6 — <br /> 4110/91 1067 — 3806 017 370 4 6 <0 5 7 <05 -- <br /> 7110/91 1102 -- 3771 -035 1,200 9 5 <0 5 18 1 5 — <br /> 9/24/91 1129 -- 37 44 -027 <50 <0 5 <0 5 <0 5 <05 — <br /> 1123/92 1078 -- 3795 0 51 180 1 4 1 5 1 5 <05 -- <br /> 4/20/92 1070 — 3803 0 08 -- -- -- — — <br /> 4121192 — -- — -- 290 1 6 <0 5 2 <0 5 -- <br /> 718192 1097 — 3776 -- 240 <0 5 <0 5 0 6 <05 -- <br /> 1017/92 11 i 1 — 3762 -014 — -- — <br /> 1018192 — — — -- 160 <0 5 <05 <0 5 <0 5 <br /> 1/18/93 994 — 3879 — -- — -- — — <br /> 7G600-026-001/GW Tables <br />