EXH0232018941

northwest hydraulic consultantSsacramentoinC.!.A 16300 christensen road. suite 350 " seattle, washington 98188-3418 vancouver I EXHIBIT.O ._,_1 (206) 241-6000- phone edmonton I ,2--_-,' _. I(206) 439-2420 - fax seattle • M. Green Jwww.nhcweb.com q April 11,2001 Mr. CordonWhite ProgramDirector ShorelandsandEnvironmental AssistanceProgram WashingtonStateDepartmentof Ecology 300DesmondDriveSE Lacey, WA 98503 Subject: Ecology Review of SeaTac Airport Low Streamflow Analysis Northwest Hydraulic Consultants (nhc) has been retainedon behalfof the AirportCommunities Coa2ition (ACC) to provide a technical review of stormwaterfacilitiesand related streand]ow impacts from the proposed 3rd runwaydevelopment at SeaTac airport. This is our ninth letter to Ecology on the ACC's behalf. Our letters dated 11/24/1999, 5/3/2000, 7/31/2000, 9/7/2000, 9/21/2000, 9/25/2000, and9/27/2000 identifiedsignificantproblemswith the now-supercededNovember 1999 and August 2000 versions of the StormwaterManagementPlan (SMP). Our letter dated 2/15/2001 (copy enclosed) identifiessignificantproblems with the most recent December 2000 version ofthe SMP and related documentswhich includethe December2000 "Seattle-TacomaAirportMaster Plan Update Low StreamflowAnalysis." The purpose of this letter is to express concernover a recentEcology memorandum (copy enclosed) dated3/9/2001 which provides a review of the December2000 "Seattle-TacomaAirport Master Plan Update Low Streamflow Analysis." The Ecology memorandum providesan excellent summary of the approach and conclusions of the low streamflowanalysis, but fails to provide a meaningful critique of the study and fails to acknowledge shortcomingsand concernsraisedby us and by others. Serious technical concerns on the low streandlow analysis have been expressedto Ecology in pages 11 through of our letter of 2/15/2001 and also in pages 22 through 24 (copy enclosed) of King County's 2/22/2001 review comments on the December 2000 SMP. R…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
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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 [...]