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aliori egional Water Quality Co of BoardsEa."°'rR <br /> Central Valley Region , <br /> Katherine Hart, Chair <br /> 11020 Sun Center Drive,#200,Rancho Cordova,California 95670-6114 <br /> Matthew Rodriquez (916)464-3291 •FAX(916)464-4645 Edmund G.Brown Jr. <br /> Secretary for http://www.waterboards.ca.gov/centralvalley Governor <br /> Environmental Protection ctl <br /> A(0 V Oy VA <br /> atnovu <br /> 1November 2011 <br /> W. Michael Carroll Dennis Agar <br /> Solid Waste Division Deputy District Director <br /> San Joaquin County Dept. of Public Works California Department of <br /> P.O. Box 1810 Transportation <br /> Stockton, CA 95201 P.O. Box 2048 <br /> Stockton, CA 95201 <br /> REVIEW OF ADDENDUM TO FINAL CLOSURE PLAN AND POST CLOSURE <br /> MAINTENANCE PLAN FOR THE CORRAL HOLLOW LANDFILL, SAN JOAQUIN COUNTY <br /> Central Valley Water Board Compliance and Enforcement staff has reviewed the Addendum <br /> to the Final Closure Plan (Plan) and Post Closure Maintenance Plan. The Plan was submitted <br /> by San Joaquin County Department of Public Works and the California Department of <br /> Transportation as required under the California Water Code 13267 Order dated 7 July 2011 <br /> (the Order). <br /> The Plan addresses the requirement in the Order for a final closure cover design for the <br /> uncovered portion of the Corral Hollow Landfill. The proposed cover consists of a one-foot <br /> thick foundation layer, a geosynthetic clay liner (GCL) as a low permeable barrier, and a two- <br /> foot thick vegetative layer. The plan also includes the installation of two landfill gas (LFG) <br /> extraction wells that will become part of the existing LFG collection system. Compliance and <br /> Enforcement staff concurs that the Plan satisfies the requirement of Task 1 of the Order. <br /> The Addendum to the Final Closure Plan will be provided to the Board's Title 27 Permitting <br /> Unit to review for compliance with Title 27 and to update the landfill's waste discharge <br /> requirements. Please contact Victor Izzo of the Permitting Unit at 916-464-4626 if you have <br /> permitting questions. Compliance'and enforcement questions should be directed to me at <br /> 916-464-4737. <br /> TODD A. DEL FRATE, P.G. <br /> Engineering Geologist <br /> Compliance and Enforcement Unit <br /> cc: Gino Yetka, CalRecycle, Sacramento <br /> Robert McClellon, San Joaquin County Department of Environmental Health <br /> California Environmental Protection Agency <br /> 0a Recycled Paper <br />