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e <br /> Tae P#f 17 <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 DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> ATRA 04/23/87 5058 1249 — 3809 -- <100 <05 <0 5 <05 23 <br /> 12/22187 1263 — 37 95 -014 -- 5 9 <0 5 09 <0 5 — <br /> 03/24/88 1254 — 3804 009 — <05 <0 5 <05 <0 5 <br /> 06!23188 1283 — 3775 -029 <0 5 1 3 4 3 2 2 <br /> 09/29/88 1301 — 3757 -018 -- <0 5 <0 5 <05 <0 5 - <br /> 02/22/89 1246 — 3812 0 55 <100 14 <0 5 <05 1 8 <br /> 06/21/89 1237 — 3821 009 520 360 0 8 21 36 <br /> 09118/89 1288 — 3770 -0 51 27,000 250 1,200 570 7,100 - <br /> 12/27/89 1268 — 3790 020 <50 3 4 <0 3 1 3 14 - <br /> 04/18/90 1284 — 3774 -016 13 21 1 5 16 16 - <br /> 10/16/90 -- — — -- <50 1 <0 5 2 2 <br /> 10119/90 1310 — 3748 — -- — -- -- -- <br /> 01/10/91 1278 — 3780 032 <50 2 4 <0 5 57 2 3 -- - <br /> 04/10/91 1252 — 38 06 026 73 1 3 <0 5 4 8 <0 5 — <br /> 07/10/91 1295 — 3763 -0 43 90 2 <0 5 47 1 7 <br /> 09/24/91 1330 — 3728 -035 <50 <0 5 <0 5 <0 5 <0 5 <br /> 01/23/92 1277 — 3781 053 <50 <0 5 <0 5 <0 5 <05 <br /> 04/20/92 1258 — 3800 019 <50 <0 5 <0 5 <0 5 <05 -- <br /> 07/08/92 1290 — 3768 -032 <50 <0 5 <0 5 0 6 <05 - <br /> 10107/92 1309 — 3749 -019 <50 <0 5 <05 <0 5 <0 5 <br /> 1118193 — — — — -- -- -- — - <br /> 04/14/93 1231 — 3827 -- <50 <0 5 <05 1 5 <05 — <br /> 08f30/93 1318 — 3740 -0 87 <50 <0 5 <05 <0 5 <05 - <br /> 10/27/93 1313 — 3745 005 <50 <05 <05 <0 5 <0 5 <br /> 02118/94 1265 — 3793 0 48 17 0 6 1 1 0 8 <br /> 05/20/94 1271 — 3787 -006 27 0 6 0 3 1 4 <0 5 — <br /> 10/07/94 1314 — 3744 -043 <50 <05 <05 <0 5 <0 5 — <br /> 12/16/94 1274 — 3784 040 <50 <05 <05 <0 5 <05 <br /> 02/28/95 1265 — 3793 009 <50 <05 <0 5 1 <05 — <br /> 04/26/95 1290 — 3768 -025 <50 <0 5 <0 5 <0 5 <05 — <br /> 07/27/95 13 22 — 3736 -032 -- -- -- -- <br /> 10/26/95 1340 — 3718 -018 — — — -- - - <br /> 10/27/95 — — — — <50 <0 5 <0 5 <0 5 <0 5 — — <br /> 02/12/96 1230 — 3828 — 120 <0 5 <0 5 2 2 <0 5 — <br /> 04/18/96 1290 — 3768 -060 — — -- — -- -- - <br /> 07118196 13 28 — 3730 -038 <50 <0 5 <0 5 <0 5 <05 <5 <br /> 11/15/96 1374 — 36 84 -046 -- -- -- -- -- — <br />