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• . c <br /> Table 2 <br /> C <br /> HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS <br /> September 2003 Through December 2003 <br /> Former 76 Station 6981 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 802113 82608 <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg11) (41) (41) (µg/1) 01g/1) (µg/1) <br /> MW-1 (Screen Interval in feet 510-550) <br /> 9/24103 1107 3322 000 -2215 .. ND<50 NDN 50 0 88 ND<O 50 ND<1 0 -- ND<50 <br /> 12/30/03 1107 32 85 000 -2178 037 -- ND<50 ND<O 50 0 64 052 1 5 -- NDQ 0 <br /> MW-2 (Screen Interval to feet 510.55 0) <br /> 9/24103 1156 3479 000 -23 22 -- -- 2100 81 NDQ 5 70 97 -- IO <br /> 12/30/03 1156 3423 0 00 -22 67 0 55 - 370 12 0 55 NDN 50 21 -- 50 <br /> MW-4 (Screen Interval in feet 510-55 0) <br /> 9/24/03 1163 3401 000 -2238 -- -- ND<50 NDN 50 NDN 50 ND<0 50 ND<l 0 -- NDQ 0 <br /> 12/30/03 1163 3351 0 00 -2188 050 -- ND<50 ND<0 50 076 NDN 50 25 <br /> MW-5 (Screen Interval in feet 50 0-55 0) <br /> 9124103 1152 34 01 000 -2249 -- -- ND<50 ND<O 50 0 56 ND<O 50 ND<1 0 -- NDQ 0 <br /> 12/30/03 1152 3358 000 -22 06 043 -- 57 ND<O 50 ND<O 50 ND<0 50 ND<1 0 -- NDQ 0 <br /> MW-6 (Screen Interval is feet 49 0-69 0) <br /> 9/24/03 1143 32 82 000 -2139 -- -- ND<50 NDN 50 NDN 50 NDN 50 ND<1 0 -- NDQ 0 <br /> 12/30/03 1143 3326 000 -21 83 -044 -- ND<50 ND<O 50 1 1 ND<O 50 1 8 -- NDQ 0 <br /> MW-7 (Screen Interval in feet 49 0-69 0) <br /> 9124103 1182 3458 000 -22 76 -- -- ND<50 ND<O 50 062 ND<0 50 ND<1 0 - NDQ 0 <br /> 12/30/03 1182 3406 000 -2224 052 -- ND<50 056 29 0 70 3 3 -- NDQ 0 <br /> MW-8 (Screen Interval in feet 49 0-69 0) <br /> 9124/03 1038 3239 0 00 -2201 -- -- ND<50 ND<O 50 1 1 ND<O 50 ND<1 0 -- ND<2 0 <br /> 12/30/03 1038 3196 000 -2158 043 ND<50 ND<O 50 1 3 068 23 -- ND-2 0 <br /> MW-9 (Screen interval in feet 50 0-70 0) <br /> 9/24/03 1176 33 96 0 00 -2220 -- -- ND<50 ND<O 50 0 54 NDN 50 ND<1 0 -- ND-:2 0 <br /> 12/30/03 1176 3354 0 00 -2178 042 -- 77 NDN 50 1 3 ND<O 50 19 -- NDQ 0 <br /> MW-11 (Screen Interval in feet 54 0-72 0) <br /> 9124103 1123 3447 000 -2324 -- -- ND<50 ND<0 50 ND<O 50 NDN 50 ND<1 0 -- NDQ 0 <br /> M81 Page 1 of 2 <br />