EXH0503022976

PCHBPollution Control Hearings Board of the State of Washington

Ms. Gail Terzi and Mr. Jonathan Freedman US Army Corps of Engineers Regulatory Section, Seattle District PO Box 3755 Seattle, WA 98124-2255 RE: Review of Wetland 44a in Relation to Proposed Temporary Interchange at SR509 and S. 176thStreet. Dear Ms. Terzi and Mr. Freedman, The Airport Communities Coalition (ACC) requested that I review Wetland 44a and its relationship to the east side of the proposed SR509 temporary interchange located in the City of SeaTac. The purpose of my review was to evaluate whether wetland 44a (using the delineation provided in the Parametrix Memorandum, dated May 3, 2000, entitled Analysis of indirect impacts to wetlands from the temporary SR-509 interchange- Seattle Tacoma Airport) was correctly located on the project plans (signed February 24, 2000) and hydraulic report (April 12, 2000), both prepared by HNTB Corporation. visited the area on June 1, 2000 and, with the permission of adjacent property owners, walked west from S. 174thStreet to Manhole AC-5 and the chain link fence located along the right of way of SR509 (shown on Map 1 of this report). Map 1 shows a sewer line, manhole locations and the chain link fence defining the fight of way, in relation to SR509. The map was prepared for Southwest Suburban Sewer District in 1984. I located each of the manholes shown on Map 1 and noted their location in relation to the chain link fence shown to be on the right-of-t way in Map 1 and Wetland 44a. I followed the fence south and…
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