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Response No. 42 <br /> DDRW-Tracy needs to elaborate on the results of the soil gas <br /> survey rather than stating that "PCE was present up to 2 µg/Q in <br /> the soil gas in Area 5. " State where in Area 5. State how the <br /> results of the soil gas survey correlate to those of the soil <br /> borings or groundwater monitoring wells. This should be <br /> addressed in the Comprehensive RI/FS. <br /> Response No. 45 <br /> This response does not adequately address the principal concern <br /> of this statement -- data reliability. DDRW-Tracy should respond <br /> to the possible data discrepancy involving SB39 and SB52-2 . If <br /> not done in OU No. 1, these and other issues will need to be <br /> addressed as a part of the Comprehensive RI/FS. <br /> Response No. 67 <br /> The rationale for sampling of wells (appropriate to OU No. 1) for <br /> any class of pesticides should be discussed in the RI for OU No. <br /> 1. The last monitoring round has sampled several wells for <br /> organochlorine pesticides, organophosphorus pesticides, and <br /> organochlorine herbicides. <br /> I-4 <br />