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Foothill Landfill ( - 2 - 11 July 2017 , <br /> San Joaquin County <br /> the VOCs detections in groundwater are the overlying waste management unit(s) (WMUs). <br /> Consequently, this is a continuing violation of the WDRs Prohibition A.2, A.4, and A.7. <br /> Work Plan <br /> As discussed above, there continues to be a release of landfill gas (LFG)from Module I as <br /> reported in the newly constructed alternate and existing soil gas probes and monitoring well <br /> MW-3. Based on this evidence, by 28 August 2017 the Discharger shall submit a revised a <br /> work plan to reconstruct soil gas probes SG-4, -5, -7, and -9 such that they extend throughout <br /> the entire vadose zone and monitor, independently, the zones of highest permeability. The <br /> Discharger must evaluate the need for multiple probes at different depths within the same <br /> borehole and construct the gas probes accordingly. <br /> This work plan was to accompany the Annual 2016 monitoring report as discussed in the <br /> 4 November 2016 Well Installation Report submitted by the Discharger. This work shall be <br /> completed as soon as possible but no later than 15 September 2018. <br /> If you have any questions please call Todd Del Frate at 916-464-4737 or email him at <br /> tdelfrate(a)waterboards.ca.qov. <br /> a <br /> HOWARD HOLD, P.G. <br /> Senior Engineering Geologist <br /> WDRs Compliance and Enforcement <br /> Cc: Robert McClellon, San Joaquin County Environmental Health <br /> CIWQS VI #102492 <br />