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September 30, 2008 <br />Mr. Todd Del Frate <br />California Regional Water Quality Control Board <br />Central Valley Region <br />11020 Sun Center Drive, #200 <br />Rancho Cordova, California 95670-6114 <br />C <br />P. O. BOX 1810 - 1810 E. HAZELTON AVENUE <br />STOCKTON, CALIFORNIA 95201 <br />(209) 468-3000 FAX (209)'-468-2999 <br />pF <br />7 <br />I D�L r <br />OCT 2 2008 <br />En.�V"ic �cj!.jn VI - HEALTH <br />PERM,,' <br />SUBJECT: REVISED COST ESTIMATES FOR CORRECTIVE ACTION AT <br />FOUR SAN JOAQUIN COUNTY -OWNED SANITARY LANDFILLS <br />Dear Mr. Del Frate: d <br />Enclosed please find revised cost estimate for corrective action against a reasonably foreseeable <br />release at each of the four County -owned Sanitary landfills. These estimates are in accordance with <br />previously approved corrective action cost estimates, updated as follows: <br />Operation costs are accumulated over a 30 -year corrective action period <br />Costs of the landfill gas components are increased to reflect a contractor's bid submitted June <br />2008 for similar work at our Corral Hollow Landfill <br />Costs for other components are increased by 2.7% in accordance with the California Integrated <br />Waste Management Board's annual escalation factor <br />I have also included excerpts from our previous cost estimate, for ease of comparison. <br />Please review the enclosed estimates, and if you find them reasonable, we would greatly appreciate a <br />letter stating this for our transmittal to the California Integrated Waste Management Board (CIWMB). <br />Please contact me at (209) 468-8504 with any questions. <br />Sincerely, <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:kb <br />N: \Miscellaneous\FinancialAssurance\CorrAct\TDelFrate03-RevCorrActCostEstO8.doc <br />Enclosures <br />c: Robert McClellon, Environmental Health Department <br />Elizabeth Castaneda, CIWMB Financial Assurance Section (via email) <br />LR 50200 <br />OPOUIN .0 <br />THOMAS R. FLINN <br />- DIRECTOR <br />Cqc%F'pP�`P <br />THOMAS M. GAU <br />CHIEF DEPUTY DIRECTOR <br />MANUEL SOLORIO <br />DEPUTY DIRECTOR <br />STEVEN WINKLER <br />DEPUTY DIRECTOR <br />ROGER JANES <br />BUSINESS ADMINISTRATOR <br />September 30, 2008 <br />Mr. Todd Del Frate <br />California Regional Water Quality Control Board <br />Central Valley Region <br />11020 Sun Center Drive, #200 <br />Rancho Cordova, California 95670-6114 <br />C <br />P. O. BOX 1810 - 1810 E. HAZELTON AVENUE <br />STOCKTON, CALIFORNIA 95201 <br />(209) 468-3000 FAX (209)'-468-2999 <br />pF <br />7 <br />I D�L r <br />OCT 2 2008 <br />En.�V"ic �cj!.jn VI - HEALTH <br />PERM,,' <br />SUBJECT: REVISED COST ESTIMATES FOR CORRECTIVE ACTION AT <br />FOUR SAN JOAQUIN COUNTY -OWNED SANITARY LANDFILLS <br />Dear Mr. Del Frate: d <br />Enclosed please find revised cost estimate for corrective action against a reasonably foreseeable <br />release at each of the four County -owned Sanitary landfills. These estimates are in accordance with <br />previously approved corrective action cost estimates, updated as follows: <br />Operation costs are accumulated over a 30 -year corrective action period <br />Costs of the landfill gas components are increased to reflect a contractor's bid submitted June <br />2008 for similar work at our Corral Hollow Landfill <br />Costs for other components are increased by 2.7% in accordance with the California Integrated <br />Waste Management Board's annual escalation factor <br />I have also included excerpts from our previous cost estimate, for ease of comparison. <br />Please review the enclosed estimates, and if you find them reasonable, we would greatly appreciate a <br />letter stating this for our transmittal to the California Integrated Waste Management Board (CIWMB). <br />Please contact me at (209) 468-8504 with any questions. <br />Sincerely, <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:kb <br />N: \Miscellaneous\FinancialAssurance\CorrAct\TDelFrate03-RevCorrActCostEstO8.doc <br />Enclosures <br />c: Robert McClellon, Environmental Health Department <br />Elizabeth Castaneda, CIWMB Financial Assurance Section (via email) <br />LR 50200 <br />