EXH0619024350

PCHBPollution Control Hearings Board of the State of Washington

RX DATE/TIME NOV.-UY 9'.J[Wt_U)IU:4U ,_Ubz_ii_0 r. uu_ J FROM : D WAGNER FAX NO. : 306 2411553 Nov.03 199909:46AM P6 l _l_+_-_r" UNITEDSTATESENVIRONMENTALPROTECTIONAGENCY REGION10 .... 1200SixthAvenue seattle,Washington98101 ReplyTo AttnOf:OAQ-107 Mr. Dermis Ossenkop Federal Aviation Administration Nortliwest Mountain Region 160I Lind Ave, S.W. P,enton,Was gton9Soss-4056J llOG1996 De_rMr,Ossenkop: .This letter supplement.4.0RrMarch 18, 1996 comments ou.the Final Environmental Impact Statement for Proposed Master Plan Update Development Actions at Scattlc,-Tacoma InternationalA_.port (final EIS) and it detailsour concerns with this and adjacentprojects regardingairquality.Ourreviewb nlaccordancewithourrespoasibilRiesunderSe._tioxx309of theCleanAirAct(CAA) andtheNationalEnvironmentalPolicyAct(NEPA). We continuetohaveconcernsaboutfutureairqualityaroundtheairportaswallastheair qualityanalysisinthefinalEIS. Our'_mmentsarcb_ed primarilyonconforafitywiththeState ImplementationPlanasrequiredbytheCleanAirAct(CAA) andcumulativeimpactsfromother projc_aroundtheairport. .. The c0nfoimity analy_ in the final EIS is a draftconformity =,--lysLs..Whilc we have been discussing thi_ with FAA andother agency representatives in recent we, k&.the draft EIS did not contain _ch an an-l.ysisand therefore this is the first formal opportuaity EPA has had to commenton this issue..The intent of our comments is to provide the information.neededfor a final conformity analysis that will meet the requirements of the CAA. The conformity provisions of the CAA mandate that any federal agency prol)0siuga project in a nonattainment.or maintenance area for ,dr pollutants mat demonstrate that the project conforms to the Sta,t¢ ImpimnentationPlan for pollutants of concern. Because with the project,thefinalEISshowsanincreaseintheseverityofexceedancesoftheNationalAmbient AirQualityStandardforcarbonmonoxide(CO)attwointersectionsneartheSeatacAirport,we believe the draft conformity analysis does not support your conclusioa that the project,conforms _,A to the State Imptementation Plan (SIP) L_ I, order to demonstrate conformity with the SIP. the final conformity analysis should __ include the following items. __:- , _.. I. Creation of an emi._Sionsinventory that includes: (a) all reasonably…
V V