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Aug -29-2008 10:39 AM CA In.Agrated Waste Management 9163413884 <br />LNnA S. ADMN <br />SFCM- 'AAY FURLLNVnWNMENTAL <br />rV uuo R$lt) iixtow,t\' <br />CHAIR <br />MBR0WN0C1WM8_CA-00V <br />(916) 341.6051 <br />WESLEY CRESBRO <br />WC14FSnR0ft. WMA.CA.G(V <br />(916) 341-6039 <br />UsAi.l)i Muu <br />RMULG@C1WM5.&.00V <br />(916) 341.6016 <br />CHERYL PFACE <br />CPEACE@CiW MIS.CA. G(7V <br />(916)341.6010 <br />GARY FL rmsiv <br />GPEnRSEN@crwD.CA.G OV <br />(916) 341.6035 <br />cmummm�tS <br />emmmmi' <br />9, dmlJm Rmq <br />�L761N11Y5 <br />i1`i�' Iunm10E8[0 <br />I rrN.:rzniu:a <br />evnsnl <br />SIA N.1G1'MI:NT <br />jlVM1ttl> <br />k <br />1 [,"rrT, SACRAMRNTQ, (;Ai-lr')RNiA 95814' P.O. Box 4025, SACRAMEMR), CAUFURNIA 95812-4025 <br />(916)341.6000 - WWW.CtWMB.CA,GGV <br />.August 29, 2008 <br />1/6 <br />riiyy9 <br />ARNOLD sci NYARBHNmen <br />GOV131tMOR <br />Post -it" Fax Not�e/j 7671Date <br />�q Qg oHD <br />To Rok t r t <br />From <br />Go. <br />LAt <br />CaMept <br />Phone it <br />Phone <br />I'aXIk '/') <br />20q <br />Fex # <br />FY.r Lely <br />Mr_ Andrew Keller, Environmental Mai -lager <br />TLE Properties, Inn, <br />379 Costa Mesa S .eet <br />Costa Mesa, California 926.7 <br />1VXE T1:(ANE VENTING SYSTEM TNSTALLATi4N WORKPLAN AT COVE <br />CONTRACTORS LANDFILL, FACILITY No. 39 -AA -0010 <br />Dear Mr. feller: <br />Board staff have completed our review of the proposed Methane Venting System <br />Installation Workplan, dated August 15, 2008, which was received at otic office <br />on August 18, 2008. We provide the .-ollowing comments and/or questions <br />relative to the submittal: <br />1. On Page 1 of the submitted workplau, the statement is made that, "the CIWMB <br />directed the Cove Contractors Facility to implement a passive methane venting <br />system as directed in a letter dated June] 7,2008." Tobe very clear about the <br />point, in the Corrective Action Plan, dated May 23, 2008, Cove Contractors <br />provided a passive methane venting system as the preferred corrective action <br />alternative acid [lie CIWMB agreed to the initial corrective rxleasure, that was <br />preferred by the owner/operator. <br />2. Our review of the workplan indicates that the proposed system is not what may <br />be considered a "passive system" but rather, it is a system of vent installation in <br />fill. In general, a passive system is a. system. of trenches, pipes and gravel <br />installed in the native soil excavated to the bottom of the waste fill with one side_ <br />of the trench wall having an impermeable layer to prevent gas from migrating <br />laterally and instead promoting its path through the pipes in the trmeh_ <br />3_ CIWNiB staff suggest that the vents be equipped with sampling ports through <br />which monitoring of the concentrations of the landfill gas can be made. <br />6 <br />OA CINAC PRINTRn ON 100 % P(SSTMUSIJMER CnN=,, i'RLXMSED CIAORINR (RFF PAPER <br />