EXH0458022912

Underlined text include editsmade _,i,ncethe February 19.thdiscussionwithEcology, Portof.,_eattle,and .Portconsultants.Theunderlinedtextrepresentsa _ of thereviewersunderstandingof discussions andclarificationsprovidedat theFebruary19_ meeting. The purposeof themeetingwas to provideverbal feedbackon the initialFindingsof ourtechnicalreview of the currentlow-flowplan. ThePortis in the processof investigatingthecomments andrevising the plan accordingly.Materialwasreceivedat the Februa_ 19_ meetin_andelectronicfdes receivedFebruary22_+on CD-ROM.Thesematerialshave not beenreviewedto date. Additionalcommentsmaybe fQrthcoming. ReviewScopeand Limitations The December2001 Low FlowAnalysisFlow ImpactOffset FacilityProposal(Low FlowReport)hasbeen reviewedagainstthe currentconditional401 Certificationand10/30/01 facilitatedmeetingnotes. Review also includesanevaluationof consistencyin hydrologicmodelinganddemonsiratlonof feas_ility to achievetheperformanceobjectivesidentifiedby the WashingtonSta1_Departmentof Ecology (Ecology) andPort of Seattle (Port). TheLowFlow Reportsupplementsthe Port's Conga'_ensiv¢ Stonnwater ManagememPlan (SMP). Thesereviewcommentscomprisefindingsandrecommendationsfor Ecology's considerationof the revisedLow FlowReport'scomplhnce wi_ applioableconditionsof 401 Certification.Theconclusionof thisreview is thatadditionalrefinementsareneededpriorto concurrencewith therevisedimpactnumbers in MRlcrCreek, andfor demonstxationof sufficient and fimolywate_collectionforWalkorcreek. Additionaloon_nentsdirectlyrelatedto theupdatedreportandmodelingwork arealsoprovidedfor your comideration, "' King County'sreview hasboenlimited1othe HSPFhydrologicmodeling,the impactassessment,andthe conceptualdesign ofrehted faoilities. With the exception of the externalHSPFhydrologicinputsand outputs,thereview of the cmbanlanentmodelingisperformedby Ecologystaff with expertisein that area. Reviewofa stormwatormanagementplanis primarilya review of designconceptsand assumptionsto determineffthe proposedmitigationsdemonstratea feas_le approachto comply with the identified performancegoals. As the proposedMastexPlanUpdate (MPU) developmentprojectsmove fromthe planningstagesto developmentof constructionplans, the proposedlow-flowmitigationsmay need to be updatedtoreflect any changein conditions. Priorto conslruotionof specificprojects,additionalreview andapprovalof the final constructiondrawingsand associated teclmlcalinformationreportsis typically performedby local permittingagencies. A similarprocessis recommendedforthedovolopmeatproposah coveredby the401 Certification.It isrecommendedthatEcology andthePortdevelopaplan to oversee andmonitorcompliancewith the mitigationsset forthin the StormwaterManagcncnt Plan andLowFlow Report.One optionis to create an Ecology "ComplianceT_rd', represontingd_ necessarydisciplines, to workwith thePort to achievecompliancewith the goals and objectiveshid out in the SMPandrelated documents.Oversightandmonitoringarekay elementsto successful implementationofauy stormwater ra_nagementplan. ]Above discuss/onis mostly repeatedfrompreviousreviewcuramonta. Notdiscussedatmeeting. IIII I III EXHIBITNO._:___, •: I _._8,o,.3 I !_m.or,.., Febm_2__+2002 [ KingCountyDepartmentof'NaturalResources AR 022912 DRAFT--DtLAFT--DRAFT--DRAFTEDRAFT---DR_gFI"--DRAFr--DRAFF--DRAFT--DRAFT I EudosurB#1…

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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 [...]