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• Tat Paef 17 <br /> Groundwater Elevation and Analytical Data <br /> o. <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 DO <br /> Sampled (feet,MSL) (feet,TOC) In feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> ATR-4 04/18/96 1077 — — — 770 <1 0 <1 0 41 1 9 -- <br /> (cont) 07/18/96 1052 — -- 2,600 12 <5 52 <5 560 <br /> 11115/96 1151 — - - 440 <G5 <0 5 0 8 2 2 140 -- <br /> 03/14/97 11 57 -- -- 150 1 5 <0 5 <0 5 <0 5 870 007 <br /> 06104/97 NP 1093 — -- 420 8 7 1 4 1 2 1 3 5 4 008 <br /> 08/11/97 NP 1055 — -- - 320 2 4 1 1 <05 57 6 3 -- <br /> 11/17197 NP 1120 — -- — 420 3,3 1 4 <0 5 076 48 -- <br /> 03130l98 NP 1038 — — - <50 <0 5 <0 5 <0 5 <05 <5 0 1 1 <br /> 06/25/98 NP 1040 — -- — 65 8 <0 5 <0 5 <0 5 <0 5 <50 1 <br /> 09/11/98 NP 1106 — — — <50 <0 5 <0 5 <0 5 <0 5 <25 084 <br /> 12A 5/98 NP 1075 — — — <50 <0 5 <0 5 <0 5 <05 <50 1 1 <br /> 03/17/99 NP 1053 -- — -- <50 <0 5 <05 <0 5 <05 <5 0 67 <br /> 05/14/99 NP 1097 — — -- <50 0 591 <05 <0 5 <05 8,720 20 <br /> 09/16/99 NP 1093 — — <50 <0 5 <05 <0 5 <05 <50 6 8 <br /> 12122/99 NP 1089 — - -- <50 <05 <05 <05 <05 857 1 58 <br /> 02129/00 NP 1026 — — — <50 <0 5 <0 5 <0 5 <0 5 <2 5 31 <br /> ATR-5 03/10/89 4873 -- — — - 6,600 693 <5 0 327 7 -- -- <br /> 06/29/89 1052 — 3821 -- 2,200 490 2 4 280 1 3 — <br /> 09118/89 1098 3775 -0 46 1,000 68 1 1 63 5 8 - <br /> 12127189 1076 — 3797 022 2,200 94 2 ISO <1 <br /> 04/18/90 1090 — 3783 -014 1 900 120 2 6 6 8 140 <br /> 10/16/90 — — — — 1,000 18 47 79 16 <br /> 10119/90 11 10 — 37 63 -- — -- -- -- -- <br /> 01/10191 1084 — 3789 026 350 7 1 12 16 2 6 <br /> 04110/91 1067 — 3806 017 370 46 <05 7 <0 5 — <br /> 07/10191 11 02 -- 3771 -035 1,200 9 5 <0 5 18 1 5 - <br /> 09/24/91 11 29 — 37 44 -027 <50 <0 5 <0 5 <05 <05 - -- <br /> 01123/92 1078 — 3795 051 180 14 1 5 15 <05 — <br /> 04/20192 1070 — 3803 008 -- -- -- -- — _ <br /> 04/21/92 -- — -- -- 290 16 <0 5 2 <0 5 <br /> 07/08/92 1097 — 3776 -- 240 <0 5 <0 5 0 6 <0 5 - <br /> 10/07/92 11 11 — 3762 -014 -- -- -- -- — — <br /> 10/08/92 — — -- -- 160 <0 5 <0 5 <0 5 <0 5 - -- <br /> 01/18/93 994 — 38 79 — -- -- -- -- <br /> 0119/93 <br /> -01N9/93 — -- — 1,000 25 <0 5 79 13 - <br /> 04/14/93 1047 — 3826 -- -- -- -- -- -- <br />