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Table Pag'A 1 a <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) (feet TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> ATR 12 04/18/96 922 3786 -037 <50 <06 <0 5 <0 5 <0 5 - <br /> (cont) 07/18/96 9 53 3755 -031 <50 <0 6 <0 5 <0 5 <0 5 <5 - <br /> 11/15/96 1000 3708 -047 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 03/14/97 NP 1011 36 97 -011 <50 <0 5 <0 5 <0 5 <0 5 - 009 <br /> 06/04/97 NP 934 3774 077 <50 <0 5 <0 5 <0 5 <0 5 <25 012 <br /> 08111/97 NP 967 3741 -033 <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> 11/17/97 NP 964 3754 013 <50 <0 5 <0 5 <05 <0 5 <25 - <br /> 03/30/98 NP 8 96 -- 38 12 058 <50 <0 5 <0 5 <0 5 <0 5 <5 0 2 1 <br /> 06/25/98 NP 9 35 - 3773 -039 <50 <0 5 <0 5 <0 5 <0 5 <5 0 3 2 <br /> 09/11/98 NP 947 3761 -012 <50 <0 5 <0 5 <0 5 <0 5 <2 5 126 <br /> 12/15/98 NP 9 31 -- 3777 0 16 <50 <0 5 <0 5 <0 5 <0 5 <5 0 2 8 <br /> 03/17/99 NP 916 - 3792 015 <50 <0 5 <0 5 <0 5 <0 5 <5 0 18 <br /> 05/14/99 NP 933 377S -017 <50 <0 5 <0 5 <0 5 <0 5 <50 2 0 <br /> 09/16/99 NP 956 3753 -022 <50 <0 5 <0 5 <0 5 <0 5 <5 0 3 7 <br /> 12/22/99 NP 942 -- 3766 0 13 <50 <0 5 <0 5 <0 5 <0 5 <2 50 0 83 <br /> 02/29/00 NP 893 3816 049 <50 <0 5 <0 5 <0 5 <0 5 <2 50 5 7 <br /> 06/07/00 Well inaccessible •• -- -- -- -- -- -- <br /> 09/25/00 Well Inaccessible <br /> 12/21/00 Well Inaccessible -- -- -- - - -- - <br /> 03/27/01 P 926 -- 3782 -033 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 2 3 <br /> SMW 1 10/07/94 5024 1286 - 3738 3738 2,200 250 110 <0 5 360 <br /> 12/16/94 1254 -- 3770 032 5,200 740 210 330 600 - <br /> 02/28/95 1240 3784 0 14 8,300 1000 330 450 790 <br /> 04/26/95 1271 -- 3763 -031 5,100 470 110 270 480 - <br /> 07/27/95 1300 -- 3724 029 7,400 410 42 360 630 <br /> 10/26/95 (c) 1303 -- - - -- -- - - - <br /> 10/27/95 -- -- 7,600 640 33 440 410 <br /> 02/12/96 1200 -- -- 3,800 390 <0 5 220 98 <br /> 04/18/96 1258 -- -- 500 60 <0 5 20 7 4 <br /> 07/18/96 1285 - 3,400 200 <5 130 56 60 <br /> 11/15/96 1340 -- -- 2,500 180 <2 5 62 21 590 <br /> 03/14/97 NP 1336 -- -- 1,700 130 <0 5 <0 5 <0 5 230 013 <br /> 06/04/97 NP 1273 -- -- - 520 36 31 14 15 47 005 <br /> Oat 11/97 - -- -- - - -- - -- -- -- <br /> 11/17/97 NP 1296 -- - <50 <0 5 <0 5 <0 6 <0 5 290 - <br />