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J. <br /> THOMAS R.FLINN P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> DIRECTOR STOCKTON,CALIFORNIA 95201 <br /> •.'�q�%p'o'R�' J[1v'-o .4 (209)468-3000 FAX(209)468-2999 <br /> www.sjgov.orglpubworks <br /> THOMAS M.GAU '®1 <br /> CHIEF DEPUTY DIRECTOR y-.,�,�,� <br /> MANUEL SOLORIO Worldn for YOU <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER J <br /> DEPUTY DIRECTOR <br /> ROGER JANES <br /> January 12, 2007 <br /> ^� <br /> BUSINESS ADMINISTRATOR "v,1 <br /> a <br /> Mr. Robert McClellon, REHS <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> SUBJECT: ASSESSMENT OF EXTENT OF CLOSURE CAP, <br /> CORRAL HOLLOW SANITARY LANDFILL <br /> Dear Mr. McClellon: <br /> During a visit to the Corral Hollow Sanitary Landfill yesterday in preparation for correcting the <br /> drainage along the south east edge of the refuse fill, it became apparent that adding fill in this <br /> area will conflict with the investigation of the closure cap in this area. I believe that the settled <br /> area is at the refuse-native soil interface, and we would verify the presence of refuse and <br /> closure barrier on both sides of this interface. The best time to investigate the closure cap is <br /> before additional soil is placed. <br /> Therefore, we plan to investigate the closure barrier along this interface on Wednesday, April 18 <br /> in accordance with the work plan submitted January 12 (Phase 2 Investigation). We have <br /> bentonite on site sufficient to fill over excavations in the refuse area. <br /> If you have any questions, please contact me at (209) 468-8504, and we hope to see you there. <br /> Sincerely, <br /> W. MICHAEL CARROLL, PE <br /> Senior Civil Engineer <br /> WMC:sc <br /> N:\1 Corral Hollow\ClosureCover\CH Phase 2 Covr Inv 07\RMcCIe1lon03-S-E edge invest.doc <br /> Attachment <br /> c: (by email): Mr. Michael B. Wochnic, PE, <br /> Mr. Gino Yetka, Closure and Technical Services, CIWMB <br /> Mr. Todd Del Frate, PG, Central Valley Regional Water Quality Control Board <br /> LA 21850 <br />