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I <br /> image 14 of 16 <br /> Tablell <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd.,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Well Date Elevation to Water Elevation Elevation Thickness TPI-Ig Benzene Toluene benzene (total) KOBE DO <br /> Number Sampled ft.MSL h,TOC ft,MSL Change h ft (ug/L (ug/L u /L (ug/L (ug/L (ug/L m IL <br /> ATR-11 12/19/2001 9,14 37.70 1.17 - -- - - _ - _ _ <br /> (cont.) 3/14/2002 P 9.18 37.66 -0.04 - <50 <0.50 <0.50 <0.50 <0.50 <2.5 1.60 <br /> 6/28/2002 -- - - _ - <br /> 9/11/2002 P 9.42 37.42 <50 <0.5 <0.5 <0.5 <0.5 <0.5' 2.0 <br /> 12/1712002 - - - _ _ _ <br /> ATR-12 10/16/1990 47.08 -- -- - <50 <0.5 <0.5 <0.5 <0,5 <br /> 10/19/1990 9.33 37.75 - - __ __ _ „ <br /> 1/10/1991 9.16 37.92 0.17 <50 <0.5 <0.5 <0.5 <0.5 <br /> 4/10/1991 8.98 38.10 0.18 <50 <0,5 <0.5 <0.5 <0.5 - <br /> 7/12/1991 9.28 37.80 -0.30 - <50 <0.5 <0.5 <0.5 4.5 - - <br /> 9/24/1991 9.52 37.56 -0.24 - -- - _ -- <br /> 9)25/1991 - -- - - <50 <0.5 <0.5 <0.5 <0.5 <br /> 1/23/1992 9.06 38.02 <50 <0.5 <0.5 <0.5 <0,5 - <br /> 4/20/1992 9.00 38.08 0.06 - -- _ _ .- <br /> 4/21/1992 - -- <50 <0.5 <0.5 <0.5 <0.5 <br /> 7/8/1992 9.21 37.87 <50 <0.5 <0.5 <0,5 <0.5 - <br /> 10/7/1992 9.32 37.76 -0.11 <50 <0.5 <0.5 <0.5 <0.5 - <br /> 1/18/1993 8,32 38.76 1.00 - <50 <0.5 <0.5 <0.5 <0.5 - <br /> 4/14/1993 8.79 38.29 -0,47 <50 <0.5 <0.5 <0.5 <0.5 - <br /> 8/31/1993 9.39 37.69 -0.60 <50 <0.5 <0.5 <0.5 <0.5 - - <br /> 10/27/1993 9,36 37.72 0.03 <50 <0,5 <0.5 <0.5 <0.5 <br /> i - - <br /> 2/18/1994 9.02 38.06 0.34 - <10 0.4 0.5 <0.3 <0.5 - - <br /> 5120/1994 9.06 38.02 -0.04 <10 <0.3 <0.3 <0.3 <0,5 -- <br /> 10/711994 - - - _ _ - _ <br /> 12/16/1994 <br /> 2/28/1995 <br /> 4/25/1995 <br /> 4/2611995 <br /> 7/27/1995 <br /> 10/26/1995 -- -- - __ _ <br /> 2/12/1996 8.85 38.23 - -- <50 <0.5 <0.5 <0.5 <0.5 - - <br /> 4/18/1996 9.22 37.86 -0.37 -- <50 <0,5 <0.5 <0.5 <0,5 -- - <br /> 7/18/1996 9,53 37.55 -0.31 <50 <0.5 <0.5 <0.5 <0.5 <5 <br /> 11/15/1996 10.00 37.08 -0.47 <50 <0.5 <0.5 <0.5 <0.5 <5 - <br /> 3/14/1997 NP 10.11 36.97 -0.11 <50 <0.5 <0.5 <0.5 <0.5 -- 0.09 <br /> 6/4/1997 NP 9,34 37,74 0.77 - <50 <0.5 <0,5 <0.5 <0.5 <2.5 0.12 <br /> 8/11/1997 NP 9.67 37.41 -0.33 - <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 11/17/1997 NP 9.54 37.54 0.13 <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- <br /> 3/30/1998 NP 8.96 38,12 0.58 <50 <0.5 <0.5 <0.5 <0.5 <5.0 2.1 <br /> 6/25/1998 NP 9.35 37,73 -0.39 <50 <0.5 <0.5 <0.5 <0.5 <5.0 3.2 <br /> 9/11/1998 NP 9.47 37.61 -0.12 - <50 <0.5 <0.5 <0.5 <0.5 <2.5 1.26 <br /> 12/15/1998 NP 9.31 37,77 0.16 <50 <0,5 <0.5 <0.5 <0.5 <5.0 2.8 <br /> 3/1711999 NP 9.1fi 37.92 0.15 <50 <0,5 <0.5 <0.5 <0.5 <5.0 1.8 <br /> 5/14/1999 NP 9.33 37.75 -0.17 <50 <0.5 <0.5 <0.5 <0.5 <5.0 2.0 <br /> 9/16/1999 NP 9.55 37.53 -0.22 <50 <0.5 <0.5 <0.5 <0.5 <5.0 3.7 <br /> 12/2211999 NP 9.42 37.66 0.13 <50 <0.5 <0.5 <0.5 <0.5 <2.50 0.83 <br /> 2!2912000 NP 8.93 36.15 0.49 - <50 <0.5 <0.5 <0.5 <0.5 <2.50 5.7 <br /> KUS OLP Ag0Ol02oe3lOw(arV4 OTR 00'rabb v_"j s <br />