EXH1003034954

PCHBPollution Control Hearings Board of the State of Washington

The Portof Seattlehas contractedfor the placementof approximately820,,000cubic yardsof soil materialin 1998 asthe firstphaseccnsms_on of the embankmentfor the new Runway. The WJ_inSton Deparm_m of Ecologyhas requestedan elaborationof the criteriaby which the Port will determinethe suitabilityof fill materialto be used on the project. The Porthas establisheda process thatwill assurethatappropriatematerialwill be placed as fill for the project. Thep_r_.__$beginswith the sillnifiamt decisionto bringto the project only soil materialpurchasedunderlesal cmtract by, oralreadyownedby,the Portratherthan to accept nmerial at no cost from various suppliersnot underlepl cctmact to the Port. lhndmsed fill will be broughtto the projectumdercontractsthatincludeexplicittechnical W_/ficat/ms cmcemin S the qualityandtype of the fill andthe centurion andmonitoringof that quality, measurements andpaymentspecificationsthatrequirentis_amm of the technicalspecific_om prior W payment,andliabilityallocationtermsthatplace nm-performingpartiesat very significant commercialrisk. Criteria.Certification.and Mmitorina Process I. Soil fill material(material)to be deliveredto the projectsite will be derived fromthe followin8 sources: - a. Stmm-certifiedborrowpits b. Cmtr=___-cett/fied_ction tires c. Port-ownedproperty 2. Materialderivedfromstate-certifiedborrowpits andcontractor-certified_on siteswill be providedby the embankmentcontractor,subjectto contractterms and specifi_tiom. Free materialwill net be accepted, except materialsowned bythe Port. 3. Cmtractfill mineral specificationsareas follows, andrequirecmificationfroma licensed8eotedmical engineer,certifyingthatthe subnuuednmerial tests arean rspmmtmon oftbe materialfromthe source site andthatthe materialis not contaminated. Fill BorrowMaterialTypes: Gr l 6" ]00 3" 7097 ¾" , 50-77 U.S. No. 4 30-50 U.S. No. 40 3-15 U.S. No. 200' 0-5 1003 AR 034954 Group2 6" I00 3" 70-97 .... •/," 5O-85 U.S.No.4 30-65 U.S.No.40 _30 ,i U.S. No. 200* 0-12 Group3 6" I00 U.S.No.4 50-95 U.S.No.40 20-60 U.S.No.200* 12-35 * Thepercastprotonsthenumber200rovedudlbedemmmedhazedonthefl'actm of ma=mdpa=mZthe'_"mve. Themaxunumparticlesizeallowedforfluborrowaum'inl is6" in anydimensionor ¾ oFtheallowable1_ thicknessasspecifiedin 152-2.4,whichevwis i_mr. Thefma] srada:ion shall be coatinuotudyweillp'adedfi'omcoarseto free…
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