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e <br /> Foothill Landfill - 3 - 1 August 2014 <br /> San Joaquin County <br /> 2) an engineering design for the system enhancements necessary for the ability to prevent the <br /> detections of LFG outside Module I, <br /> 3) a work plan to reinstall all current soil gas probes (SG-1 through SG-11) such that they <br /> extend throughout the entire vadose zone and monitor, independently the zones of highest <br /> permeability. The Discharger must evaluate the need for multiple probes at different depths <br /> within the same borehole, <br /> 4) a workplan to re-install SG-8 as a nested soil gas probe south of future Module 2, <br /> 5) a work plan to install one groundwater monitoring well south-southeast of future Module 2, <br /> and, <br /> 6) a proposed monitoring plan for the landfill gas wells, and collection system. <br /> If you have any questions please call Todd Del Frate at 916-464-4737 or email him at <br /> tdelfrate@waterboards.ca.gov. <br /> HOWARD HOLD, P.G. <br /> Senior Engineering Geologist <br /> WDRs Compliance and Enforcement <br /> Cc: Robert McClellon, San Joaquin County Environmental Health <br />