EXH2003029185

PCHBPollution Control Hearings Board of the State of Washington

These final meeting notes have been prepared by Kate Snider, Floyd & Snider Inc. ATTENDEES Ann Kenny, Dept. of Ecology John Drabeck, Dept. of Ecology Kelly Whiting, King County Keith Smith, Port of Seattle Paul Fendt, Parametrix Alan Black, HNTB Michael Kenrick, Hart Crowser MEETING SCOPE AND AGENDA This meeting was scheduled as a follow-up to the 6/12 meeting regarding low stream flow related tasks. The purpose of the 6/14 meeting was to discuss miscellaneous additional technical issues raised by Ecology relevant to the low stream flow evaluation. Tasks reauested in the low stream flow evaluation relative to these issues were identifiea. ADDITIONAL TECHNICAL ISSUES RELATED TO LOW STREAM FLC'V,' EVALUA rlON 1. Out of basin grc _ndwatertransfers tc Wa!ker Cr_-,.:k: a. Check amount of effective imperviG_,sarea ,Jsed in th_ ':;'.31ke..... _ " process for the non-contiguous grour_dwate, ba:._;':. b. Confirm the calibration paameters used for the non-.:.;r,:igtJous grou:!(.;,,,=[e' basin. 2. For post-project conditions, add new effecttve impervious area _ the -:on-:n" #,,ous grou_,dwater basin for W_Iker Creek to accoum for new imper_,;ous ;:.;re,_,$_,d.J-_c,Dy _e project. The HSPF input file ...._,., Walker 3reek should De replaced ,.n :,=e SMP and referenced from the low flow e, :Juan;on reF :L Note: tl_iswork affects groundwater flow for the low _'t_'_a:n_iow evaluai: n. ':!_3 change will no', affect surface water ficw co,- :rol i,_ci!i:, :. ECY00014991 c_ .. Z; =_g_- . of 2 AR 029185 401 Permit Decision-Making, Sea-Tac Airport Third Runway Floyd & Snider Inc. June 13, 2001 3. For the DesMoines…
V V