EXH2003029205

These meeting notes have been prepared by Kate Snider, Floyd & Snider Inc. ATTENDEES Ann Kenny, Dept. of Ecology KellyWhiting, King County Keith Smith, Port of Seattle Paul Fendt, Parametrix Rick Schaefer, EarthTech Robert Farid, Parametrix Joe Brascher, Aquaterra MEETING SCOPE AND AGENDA The purposeof thismeeting was to review status of lowflow evaluation materials. MILLER CREEK Mitiqation flow rate and duration • Proposed mitigation period: Aug 1 - Oct .:1. This period cal: _'!re; _' 7-day low flow events in .'heexisting record ,,_i_,hexception of three outliers in Nov & _=.c. • Mitigation _-tow - propose 1£91 as target year in ._ost prbject conditions, E _,_ ',e 1991 flows are closest surrcgate to the ."-year event within post project conc:;t,c,Ts. Use of 1£91 as target ye?.r results in a nTitig_tion flow rate of 'c.10 cfs. A mitigati._n :7:,w rate of 0.10 covers all s_ormswithin the 2-year return frequency. • Methodology for deriving target flow :ate: • Clear description should be Drc.,ided of methodology used to determine target flow for the 4-ye.=r modeled _eriod • ¢or both Miller & Walker watersheds, method used to determine target flov, .,Jill be co=,npareC,v;th alternate method that would initiate post-project cc;Tditionsfor the 4-year ;.._nod with i.Tfofrom pre-project record - provide as crosscr,_ c!', • Comparison of gauge data &modei re ults requested to substantia:_=calibration. AR 029205 c- -_01 ECY00015001 Page1of 3 401 Permit Decision-Making, Sea-Tac Airport Third Runway Floyd & Snider Inc. July 16, 2001 Reserve Storaqe Vaults • Vault sizes designed to provide 92-day release…

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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 [...]