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Tas Pa joof 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service StatJon#2093 <br /> 3425 Tracy Blvd,Tracy,Califomia <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevation to Water thickness Elevaton 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 /> 10/26/95 -- -- -- -- . <br /> 02/12/96 885 3823 -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 04/18/96 922 -- 3786 -037 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/18/96 953 3765 -031 <60 <0 5 <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 /> ATR 12 03/14/97 NP 1011 3697 -011 <50 <0 5 <0 5 <0 5 <0 5 - 009 <br /> (cont) 06/04/97 NP 934 -- 3774 077 <50 <0 5 <0 5 <0 5 <0 5 <2 5 012 <br /> 08/11/97 NP 967 - 3741 -033 <50 <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 11/17/97 NP 954 -- 3754 013 <50 <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 03(30/98 NP 896 - 3812 058 <50 <0 5 <0 5 <05 <0 5 <5 0 21 <br /> 06/25/98 NP 935 -- 3773 -039 <50 <0 5 <0 5 <0 5 <0 5 <5 0 32 <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 931 -- 3777 016 <50 <0 5 <0 5 <0 5 <0 5 <5 0 28 <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 3775 -017 <50 <0 5 <0 5 <0 5 <0 5 <5 0 20 <br /> 09/16/99 NP 955 - 3753 -022 <50 <0 5 <0 5 <0 5 <0 5 <60 37 <br /> 12/22/99 NP 942 -- 3766 013 <50 <05 <0 5 <0 5 <0 5 <2 50 083 <br /> 02/29/00 NP 893 -- 3815 049 <50 <05 <0 5 <0 5 <0 5 <2 50 57 <br /> 06/07/00 Well Inaccessible — — •- -- __ -- — — <br /> 09/25/00 Well Inaccessible — -- — -- -_ ._ .. <br /> SMW-1 10/07/94 5024 1286 -- 3738 3738 2200 250 110 <0 5 360 <br /> 12/16/94 1254 -- 3770 032 5,200 740 210 330 600 <br /> 02/28/95 1240 3784 014 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 /> 02112/96 1200 -- -- - 3 800 390 <0 5 220 98 <br /> 04/18/96 1258 -- -- - 500 60 <0 5 20 74 -- <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 1335 -- -- - 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 /> 08/11/97 -- -- .. -- - - -- - - - <br />