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,p 8 OPOUIN C <br />r: <br />4<iFo'A� <br />THOMAS R. FL <br />DIRECTOR <br />THOMAS M. GAU <br />CHIEF DEPUTY DIRECTOR <br />MANUEL SOLORIO <br />DEPUTY DIRECTOR <br />STEVEN WINKLER <br />DEPUTY DIRECTOR <br />ROGERJANES <br />BUSINESS ADMINISTRATOR <br />G <br />August 25, 2008 <br />Mr. Todd Del Frate <br />Califomia Regional Water Quality Control Board <br />Central Valley Region <br />11020 Sun Center Drive, #200 <br />Rancho Cordova, California 95670 <br />O. BOX 1810 - 1810 E. HAZELTON AVENUE <br />STOCKTON, CALIFORNIA 95201 <br />(209) 468-3000 FAX (209) 468-2999 <br />www.sjgov.org/pubworks <br />w� <br />i <br />SUBJECT. CONSTRUCTION QUALITY CONTROL PLAN FOR THE EXTENSION OF CLOSURE <br />CAP AT THE CORRAL HOLLOW SANITARY LANDFILL <br />Dear Mr. Del Frate: <br />Enclosed, please find Construction Quality Assurance Plan (CQA Plan) for the extension of the closure <br />cap at the Corral Hollow Sanitary Landfill. This Plan presents CQA activities for closure with <br />geocomposite clay liner (GCL) as shown in the Amendment to the Closure Plan/Postclosure <br />Maintenance Plan submitted in April of this year. Construction features along the California Department <br />of Transportation (CalTrans) property boundary were designed specifically for easy incorporation into a <br />later CalTrans closure project. <br />As you know, the County believes that the responsible course is to proceed independently with the <br />extension of the closure cap on County property unless directed otherwise by the jurisdictional regulatory <br />agencies. Our present schedule anticipates completing the project by May 2009, assuming approval of <br />the Closure Plan in early September of this year. Please call me at (209) 468-8504 if you have any <br />questions or comments regarding the Closure Plan, or any other issues at Corral Hollow. <br />Sincerely, <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:kb <br />NA1Corral HolloMClosureCover\CloCapEutn\TDetfrateO4-CQAplan_d- <br />Enclosure <br />C' Robert McClellon, Environmental Health Department. <br />Gino Yetka, Closure and Technical Services, CIWMB <br />Dinah Bortner, CalTrans Deputy District Director, PO Box 2048, Stockton CA 95205, <br />LA 21850 <br />�PP <br />