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• i r Table 1 SUMMARY OF GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS ,lune 16,2004 Former 76 Station 6981 Date TOC Depth to LPH Ground- Change in TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water Elevation 8260B benzene Xylenes 8021B 8260E Elevation (feet) (feet) (feet) (feet) (feet) (µg11) (41) (µg11) (µg11) (149/1) (µg1]) (µg11) (µg/1) MW-1 (Screen Interval in feet 510-55 0) 06/16/04 1107 3257 000 -2150 -066 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- ND<0 50 MW-2 (Screen Interval in feet 510-550) 06/16/04 1156 3401 000 -2245 -067 -- 240 6 6 ND<0 50 ND<0 50 2 0 -- 13 MW4 (Screen Interval in feet 510-550) 06/16/04 1163 3326 000 -2163 -066 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 MW-5 (Screen Interval in feet 50 0-55 0) 06/16/04 1152 3327 000 -21 75 -070 -- 83 ND<0 50 051 ND<0 50 ND<l 0 -- ND<0 50 MW-6 (Screen Interval in feet 49 0-69 0) 06/16/04 1143 33 06 000 -2163 -065 55 ND<0 50 0 85 ND<0 50 12 -- ND<0 50 MW-7 (Screen Interval in feet 490-690) 06/16/04 11 82 33 77 000 -21 95 -066 -- 57 ND<0 50 ND<0 50 ND<0 50 15 -- ND<0 50 MW-8 (Screen Interval in feet 490-690) 06/16/04 1038 31 67 000 -21 29 -060 -- 85 ND<0 50 0 76 ND<0 50 ND<l 0 -- ND<0 50 MW-9 (Screen Interval in feet 500-700) 06/16/04 1176 3321 000 -2145 -066 -- 60 ND<0 50 064 ND<0 50 ND<1 0 -- ND<0 50 MW-I1 (Screen Interval in feet 540-720) 06/16/04 I 1 23 3367 000 -2244 -067 -- - -- -- __ __ -- Damaged Well MW-14 (Screen Interval in feet 18 0-38 0) 06/16/04 1159 3366 000 -2207 -0 63 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 3 1 MW-15 (Screen Interval in feet 18 0-38 0) 06/16/04 1137 33 80 000 -2243 -070 -- 71 ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- 38 MW-16 (Screen Interval in feet 18 0-38 0) 06/16/04 1220 3403 000 -21 83 -060 -- 280 35 ND<2 5 7 8 14 -- 16 PTW-1 (Screen Interval 1n feet 52 5-72 5) 6981 Page 1 of 2