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e e <br /> URS <br /> Mr. Robert McClellon <br /> October 3, 2005 <br /> Page 4 <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Methane was measured above 5.0% in VW-4, VW-5S, VW-51), VW-6S, VW-6D, EW-1, and EW-2. <br /> Based on the most recent quarterly results, the western extent of the methane plume appears to be <br /> known along the northern boundary of the site. We recommend that the vapor extraction pilot test <br /> activities be started after the authority-to-construct permit has been approved by the San <br /> Joaquin Valley Air Pollution Control District. If you have any questions, please call me at <br /> (916)679-2081. <br /> Very truly yours, <br /> URS <br /> J y G. Kamine <br /> e or Civil Engineer <br /> closures: Table 1 —Summary of Results <br /> Figure 1 —Site Plan <br /> Figure 2—Generalized Geologic Cross-Section A-A' <br /> Figure 3—Generalized Geologic Cross-Section B-B' <br /> Boring Logs <br /> cc: Judy McCampbell (RadioShack) <br /> K:\Wprocess\25532\WorldEnterprise\Quarterly Rpt\3Q05\lu1y.doc <br />