EXH2003029145

PCHBPollution Control Hearings Board of the State of Washington

Thesedraft meetingnoteshave beenpreparedby Rachel McCrea, Floyd & Snider Inc. Please replyto Rachel at (206) 292-2078, fax (206) 682-7867, withcommentson the accuracyof these notesby 5pm, Fdday,4/13/01. ATTENDEES Ann Kenny, Dept. of Ecology KeithSmith, Portof Seattle KevinFitzpatrick,Dept.of Ecology Paul Fendt,Parametrix DaveGarland, Dept.of Ecology Tom Atkins,Parametrix KellyWhiting,KingCounty Joe Brascher,AquaTerra RickSchaefer,EarthTech Kate Snider,Floyd& Snider Inc. RachelMcCrea, Floyd& SniderInc. MEETING SCOPE AND AGENDA The purposeof this meetingis to scopethe technicalquestionsand commentsrelatedto the low streamflow impactanalysis,excludingitemsrelatedto operationalplansand maintenance for the augmentationfacilities. This includesKingCountycommentson surfacewatermodeling and non-hydrologicaleffects, as well as Ecology comments on the modeled groundwater contributions(e.g. results of slice model). The goal is to reach conclusionsregardingthe potentialneed for additionalwork productrelatedto low streamflow impacts. Thetechnicalquestionsandcommentsreviewedinclude: • KingCountyEnclosure2, ChecklistGroup6, #s 1, 2, 3, 5, 7, and 8 • KingCountyEnclosure2, ChecklistGroup3, #s 5 and 6 • KingCountyEnclosure2, ChecklistGroup2, #s 13 and 14 • EcologyMemofrom Dave Garland(March9, 2001), page 3, Recommendation#3 ECYO0007412 C:_Temp_LowF"mwTech Mt9 040401 _Ldo¢ 0s/18/01 FINAL DRAFT Page 1 of 3 AR 029145 401 Permit Decision-Making, Sea-Tac Airport Third Runway Floyd & Smder I,,=. April 4, 2001 KINGCOUNTYENCLOSURE2, CHECKLISTGROUP6 1. The Port will verify the origin of the 1994 instream flow calculations and will provide Ecology and King County with the input files and the landcover tables. Corrections being made to the Stormwater Master Plan may ripple to the 2006 values used in the low stream flow analysis. If applicable, the revised material will be used in the HSPF remodeling of low flow conditions and will be provided to King County and Ecology. 2. A small technical meeting…
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