EXH1194045793

PCHBPollution Control Hearings Board of the State of Washington

Subject: CWA 401 Issues for Master Plan Update Projects cc: Erik Stockdale, Ecology Nancy Groves, Ecology Jim Kelley, Parametrix Paul Fendt, Parameuix Project Number: 556-2912-001(03) Project Name: Port of Seattle This memorandum, as well as the attached Revised Implementation Addendum - Natural Resources Mitigation Plan for the Master Plan Update Seattle Tacoma International Airport, and other referenced or attached documents provide the information requested by Eric Stoekdale, Tom Luster. and yourself to support the Section 401 permit for work in wetlands and streams near the airport. With submittal of this information, it is our understanding that pertinent information relating to the occurrence, type. impacts, and mitigation needed by Ecology to complete their analysis of wetland and aquatic habitat issues associated with the Master Plan Update projects is now complete. ITEM 1 - WETLANDS Access to Port of Seattle mitigation sites All mitigation is planned on property currently owned by the Port of Seattle. A minor exception is the fact that, in the Lora Lake Buffer area, there are three parcels (Parcels 42, 48, and 52) that the Port will not take possession of until September 30, 2000. Confirm ratios and buffers in plans The Implementation Addendum contains a revised table of mitigation actions, the land area (acres) that this mitigation will occur on, and potential mitigation credit assigned to the mitigation against wetland impacts. The credit ratios presented in the table are the same as those presented to Ecology in February (meeting between Jim Kelley and Eric Stockdale), March (Response…
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