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I 1 Table 1 SUMMARY OF GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS May 27,2004 76 Station 5886 Date TQC 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 8260B Elevation (feet) (feet) (feet) (feet) (feet) (11g/1) (µfill) (µg/l) (µg/1) (4g/1) (µg/1) 41g/1) (leg/1) MW-1 (Screen Interval in feet 5 0-25 0) 5/27/2004 -084 5 87 000 -671 -014 -- ND<500 ND<5 0 ND<5 0 ND<5 0 ND<10 -- 490 MW-2 (Screen Interval in feet 50-250) 5/27/2004 -030 6 05 000 -635 -020 -- 100 ND<0 50 12 ND<0 50 14 -- 61 MW-3 (Screen Interval in feet.5 0-25 0) 5/27/2004 -014 601 000 -6 15 -004 -- 97 ND<0 50 1 2 ND<0 50 1 1 - 75 MW41) (Screen Interval in feet 220-250) 5/27/2004 023 695 0 00 -672 -009 -- ND<50 ND<0 50 2 3 ND<0 50 2 5 -- 21 MW4S (Screen Interval to feet 50-150) 5/27/2004 045 676 000 -631 -0 15 -- 63 ND<O 50 074 ND<0 50 ND<l 0 -- 6 4 MW-51) (Screen Interval in feet 205-240) 5/27/2004 0 65 600 000 -535 070 -- -- - -- -- -- Monitored Only MW-5S (Screen Interval in feet 50-150) 5/27/2004 0 25 699 000 -674 -0 69 -- -- -- -- -- -- -- -- Monitored Only MW-61) (Screen Interval in feet 220-250) 5/27/2004 0 17 664 000 -647 -024 - ND<50 ND<0 50 2 0 ND<0 50 17 -- ND<0 50 MW-6S (Screen Interval In feet'5 0-15 0) 5/27/2004 0 13 655 000 -642 -020 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- ND<0 50 MW-7D (Screen Interval in feet 230-255) 5/27/2004 2 76 886 000 -6 10 -021 -- -- -- -- -- -- -- -. Monitored Only MW-7S (Screen Interval in feet 70-170) 5/27/2004 2 89 878 000 -589 -004 -- -- -- -- -- -- -- -- Monitored Only I MW-81) (Screen Interval in feet 300-350) 5/27/2004 -140 5 74 000 -7 14 -031 -- 57 ND<0 50 ND<0 50 ND<0 50 ND<l 0 -- 16 MW-8I (Screen Interval in feet 170-220) 5886 Page 1 of 2