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'1 Table 3.Historic Groundwater Chemical Data for Monitoring Wells { Nell No. Date Well Depth Depth to Casing elev. Water Elev. Floating TPHG Benzene Toluene Ethylbenzene Xylene Fuel Ox. TPHD Sampled '(ft.) Water(ft.) (MSLft.)* (MSL ft.) Product (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L)* (ug/L) MW1 9/12/2001 20.97 8.41 45.09 36.68 None ND ND ND ND ND ND ND MW1 12/14/2001 20.97 8.20 45.09 36.89 None ND ND ND ND ND ND ND MW1 3/21/2002 20:97 7.99 45.09 37.10 None ND ND ND ND ND ND ND MW1 6/21/2002 20.97 7.49 45.09 37.60 None ND ND ND ND ND ND ND MW1 9/30/2002 20.97 8.48 45.09 36.69 None ND ND ND ND ND ND ND MW1 12/15/2003 20.97 8.44 45.09 36.65 None ND ND ND ND ND ND ND A MW2 9/12/2001 25.05 7.89 45.41 37.52 None ND ND ND ND ND ND ND MW2 12/14/2001 25.05 7.61 45.41 37.8 None ND ND ND ND ND ND ND MW2 3/21/2002 125.05 7.44 45.41 37.97 None ND ND ND ND ND ND ND MW2 6/21/2002 25.05 7.31 45.41 38.10 None ND ND ND ND ND ND ND MW2 9/30/2002 25.05 8.04 45.41 37.52 None ND ND ND ND ND ND ND q •.1 MW2 1.2/13/2003 25.05 7.95 45.41 37.46 None ND ND ND ND ND ND ND MW3 9/12/2001 24.81 8.19 46.01 37.82 None 58 ND ND ND ND ND 440 MW3 12/14/2001 24.81 7.95 46.01 38.06 None ND ND ND ND ND ND 170 MW3 3/21/2002 '24.81 7.62 46.01 38.39 None ND ND ND ND ND ND ND MW3 6/21/2002 .24.81 6.49 46.01 39.22 None ND ND ND ' ND ND ND 190 MW3 9/30/2002 24.81 8.32 46.01 37.73 None ND ND ND ND ND ND 900 MW3 12/12/2003 24.81 8.30 46.01 37.71 None ND ND ND ND ND ND ND Note:;ND-None detected. 1-2DCA and EDB data not included but were also ND. See laboratory reports. Fuel Oi.-.Fuel oxygenates MTBE,ETBE,TAME,DIPE and TBA. Table 4.Historic Groundwater Chemical Data for Offsite Water Wells Well No. Date TPHG Benzene Toluene Ethylbenzene Xylene Fuel Ox. TPHD i OWL) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) OWL) Sampled 6W1 i 4/16/2001 ND ND ND ND ND ND ND OW1 K. 4/15/2001 ND ND ND ND ND ND ND OW2' 2/7/2002 ND ND ND ND ND ND ND OW 2 4/16/2002 ND ND ND ND ND ND n ND Note:`.ND-None detected.See laboratory reports. Fuel Ox._Fuel oxygenates MTBE,ETBE,TAME,DIPE and TBA. € r/ Page' 4