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Tab* Pag�rf3ot 18 <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 TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feel,TOC) In feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg1l) <br /> ATR-4 01/18/93 10 45 -- 3858 -- -- -- - - <br /> (cont) 01/19/93 -- 1,200 240 55 44 90 <br /> 04/14/93 1087 -- 3816 -- -- -- - - - <br /> 04/15/93 -- -- -- 810 160 42 47 63 <br /> 08/31/93 (c) 1098 - -- -- 100 33 <0 5 6 13 <br /> 10/27/93 1098 -- 200 12 12 79 16 <br /> 02/18/94 1031 -- -- -- 950 140 5 73 30 <br /> 05/20/94 1071 - - -- 8,100 590 59 190 220 <br /> 10/07/94 1100 - -- -- 1,100 30 1 16 73 <br /> 12/16/94 1061 1 600 310 23 350 200 <br /> 02/28/95 1068 -- -- 4,600 180 <5 750 100 <br /> 04/26/95 1094 1,100 19 <1 110 83 <br /> 07/27/95 11 11 -- -- -- 1,700 12 <2 5 170 84 <br /> 10/26/95 1118 -- - <br /> 10/27/95 -- -- -- - 600 7 <1 30 2 <br /> 02/12/96 1043 6,300 <0 5 <0 5 340 150 - <br /> 04/18/96 1077 -- -- -- 770 <1 0 <1 0 41 19 <br /> 07/18/96 1052 - -- 2,600 12 <5 52 <5 560 - <br /> 11/15/96 11 51 -- -- - 440 <0 5 <0 5 08 22 140 - <br /> 03/14/97 1157 150 15 <0 5 <0 5 <0 5 870 007 <br /> 06/04/97 NP 1093 -- - -- 420 87 14 12 13 54 008 <br /> 08/11/97 NP 1055 -- -- -- 320 24 1 1 <0 5 157 63 - <br /> 11/17/97 NP 1120 - -- 420 3,3 14 <05 076 48 - <br /> 03/30/98 NP 1038 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> 06/25/98 NP 1040 -- -- - 658 <0 5 <0 5 <0 5 <0 5 <5 0 1 <br /> 09/11/98 NP 1106 - <50 <0 5 <0 5 <0 5 <0 5 <2 5 084 <br /> 12/15/98 NP 1076 -- -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> 03/17/99 NP 1053 -- - - <50 <0 5 <0 5 <0 5 <0 5 <5 0 67 <br /> 05/14/99 NP 1097 -. — <50 0 591 <0 5 <0 5 <0 5 8,720 20 <br /> 09/16/99 NP 1093 <50 <0 5 <0 5 <0 5 <0 5 <5 0 68 <br /> 12/22/99 NP '10 89 -- <50 <0 5 <0 5 <0 5 <0 5 857 158 <br /> 02/29/00 NP 1026 -- <50 <0 5 <0 5 <0 5 <0 5 <2 5 31 <br /> 06/07/00 NP 1106 -- - -- <50 <0 5 <0 5 <0 5 <0 5 842 - <br /> 09/25/00 NP 1124 - -- - <50 <0 5 <0 5 <0 5 <0 5 280 070 <br /> 12/29/00 P 1081 - -- <50 0 <0 500 <0 500 <0 500 <0 500 636' 45 <br /> OW27101 Q 10 64 -- -- 017 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 31 <br />