EXH0079017755

' .. ent I"1 F6r Review D Please Commeet [] Pleul Roply _ Please Reoyole ' e • If any PallU are not legible, or therQ is a problem with transm, isslan_ ple_m call the fax operator listed above. R_=eiven Plemm mute _= of this fax tm I_ made I_ , . cc'-_x n,_ d,,tm t = • | lime . • .eo m. i • ,| ___ ' . AFt017755 T'.J _=q'nu ]'I.LLb3S_-I0J.EIOcI" NU91::6 , T88_'T2"3](I ,pq . Portof Seattle , o_,_2,2ooi Ms.,_,_Zzm_ W_S_ _ _r_kSy 3190 ]60tbAwmueE Bellevue,WA98008:,5452 Re: Sattle-Tm:omaImmmioml wuhins_ Depsmu_oCkoU,sy §401Wsta"QmlityCa_cstion Order#199__.02._25 Condition1_.1 DesrMs,Keany:. TI_Portot Se.aulepresentsthesUacbeddocumentsto theW_ DepaumsZof' l_:ologyin msti_ or'theabovenotedOrder,CondifioaP.I. CondilimsIr.lreclukm, amon8otherthlq_ tl_ thePartprepan_"proposedcon_,micmBMPsto InmmZ interceptionot'cc_tmiu_d 8nmndwstarbyutilityconidmsmdapimsto mmitm. potea_ coatmimm uwport to soilmd Smundwmm.vis su_ milttylinee,. Pleammviewtbetwoattachaidocumm_P_ _ B_g_ To_ l_on of _ OvoundWarn.by U_v Covridav_andPlanmMoaiw Pmen¢_ Conmmi_mt7"_ mSoUand GroundW,,_ v;aS__ _O_ l,bm . IFyouhaveanyquemiomm"connnent_plea_ :fi_e.l:Freeto rc_ commeutsmidquwttcms toPml Asid,20_.439.&C_,,,,_,4p_,or_,._ o_. Sincerely, __vi_on ]_n'vk'omnentalProsrmm x¢.Asid,Newloa Suffie-Tacom_ InternationaJAirport - P.O.B_ 8r_7 s_,_,,w_m,m_ AR 017756 TELex_s_m ® _',_ _q'c_ ]I.L.L_3S _40_ IJ:_:G _'G_'::)](I "o t e • SeattioTacomaIntomaOonelNJlXXt 1401WaterQuall_ CertJflcMion_9964.0232S ConditionF.1 ProposedConslnn_onBMPs To PreventInterceptionofContaminatedGroundWaterbyUHHtyOorrldors InaccordancevdththeWashington8rateDepartmentof Ecology(Ecology)WaterQual_ Certificationfor U.8.ArmyCorpsofEngineersPublicNotice1996.4-02326,ConditionI_.1,the Portof 8eatUe(Po_ submitsthisproposalforBestManaGementPractices(BMPs)forprevention ofmigrationof contaminatedgroundwaterviasubsurfacoutilitylinest the8eadUe-Tacoma InternationalNrpert(STIA).A draftof thisBMPproposalisduetoEooio0ynolllterthan September30, 2001. BestManagementPraclJcesforpreventionofmi_ ofcordaminatadground",miterbynewly constructedutilityconidomMII consistof,and_ beImplementedbymndllicationof standard utilityconstmcUondesignguidelinesandspedflcations.ThefolloMn0constnlotlontechniques_111 bespecifiedforfatumconstructionofsubsurfaceutgitlesbelowpavedamesinthe Ixtn_pel aviationoperationsandmajntenanoearea_OMA) of _ SubjectsubsurfuceutJJNesinclude, butarenotlimitedto,eleGb'tcalandcommunicatio_ductbenks,andpipeinesforoanyingfuel, water,sanitarysewage,stop, andIndustdalWaste8ystomdrainage. 1. Standardconstructionspec_catlonswillbedevelopedforapplk:MJonto a9construcUon projectslocatedInameswithintheAOMAwherecontaminatedgroundwaterispresentat the designedconSbrtlctiondepth. 2. Thestandardspedflcationwillincludea mqukementfixthe conlractortodewaterutility trenchesandotherconstructionexcmmlJonsthatcontaincontaminatedgroundwater,andto • appraprlatelymanagethewaterremovedbydisposalto anappropriatelylicensedfaollltyor sinMarolXion. 3. ThestandardspeoH1odonwillincludea requirementthatu'JlitybeddIHbeoonslnJot_such thatanygroundwaterpresentatthe utiRydepthnotbetranspe;tedalongthe utNty,within theutilitybackfillmatedaJactingasa preferentialflowpathway,ThepotentialfortmnaportIn backtNwillbeminimizedbyuseof constructionteohnJcluesand/ormateriel8thatreduceutility backNJpermeabNty.GenericengineerlnodesignsforwevenUnotranspodwillbeofferedms examples,suchas: a. construotbao_ byplacJnocontroleddensityfill(aleanconummbdu_),orslmUmricw permeabiUtymaterial, intothe entire utlUtybench, to the be(tomof the pevemenLbase course Jayor. b.…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]