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Corral Hollow LFG System Audit and Upgrade Report <br /> CERTIFICATION <br /> ' This report entitled "Landfill Gas Extraction System Audit and Upgrade Report, Corral Hollow <br /> Landfill, San Joaquin County, California" dated December 16, 2013 was prepared under direct <br /> ' supervision of the undersigned and in accordance with California Business and Professions Code <br /> sections 6735, 7835, and 7835.1. This report has specifically been prepared to comply with <br /> Item 2 on pages 10 and 11 of Cease and Desist Order (CDO) R5-2013-0024, issued by the <br /> ' Central Valley Regional Water Quality Control Board to the San Joaquin County Department of <br /> Public Works (Discharger). <br /> ' The undersigned hereby certifies that as of the interval monitored during SCS Engineers' field <br /> investigation,the Discharger has: (1)operated the landfill gas (LFG) system to maintain negative <br /> pressure at each extraction point; and (2) taken measures to prevent LFG, to the extent possible, <br /> ' from entering groundwater through the entire footprint of the landfill and surrounding vadose <br /> zone adjacent to and beneath the landfill. <br /> ' I certify under penalty of law that I have personally examined and am familiar with the <br /> information submitted in this document and all attachments and that, based on my knowledge <br /> and on my inquiry of those individuals immediately responsible for obtaining or providing the <br /> ' information, I believe that the information is true, accurate and complete. I am aware that there <br /> are significant penalities for submitting false information, includin&, the possibility of fines and <br /> imprisonment. � , �� <br /> CM <br /> E;P <br /> -,, <br /> •31411 <br /> vi 1- <br /> December 16, 2013 , y <br /> ' Date Joseph J. Miller, P.E., Project Director <br /> California RCE No. 042598 <br /> ' SCS ENGINEERS <br /> 6601 Koll Center Parkway, Suite 140 <br /> ' Pleasanton, California 94566 <br /> 925-426-0080 <br />