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Scott Cooper <br /> From: Michael VanDenEnden <MikeV@ApexEnvirotech.com> <br /> Sent: Tuesday,January 29, 2013 10:53 AM <br /> To: Scott Cooper <br /> Subject: 5491 F Street, Banta, CA <br /> Scott, <br /> Per our phone conversation January 29,2013,you requested Apex detail how each well will be destroyed and how the <br /> road way will be repaired. <br /> The wells will be grouted using tremie pipe from the bottom of the well to the surface with Portland cement <br /> slurry. After the cement slurry has been placed in the wells,the well heads will be pressurized to 25 pounds per square <br /> inch gauge (psig)for a minimum of five minutes. Following pressure grouting activities,the top five feet of each well will <br /> be over-drilled and backfilled with the Portland cement slurry to within a foot of ground surface. Each borehole will be <br /> capped with soil to match the surrounding surfaces. <br /> Apex anticipates coordinating well destruction activities in the months of March or April of 2013. <br /> Michael van den Enden <br /> Project Geologist <br /> Apex Envirotech, Inc. <br /> 11244 Pyrites Way <br /> Gold River, CA <br /> 916-851-0174 <br /> 1 <br />