Interlocal Agreement Between the Cities of Burien, Des Moines, Normandy Park and Sea-Tac for Environmental Review of the Sea-Tac Airport Sustainable Airport Master Plan

The cities of Burien, Des Moines, Normandy Park, and SeaTac entered into an interlocal agreement to coordinate their review of the Port of Seattle's Sustainable Airport Master Plan (SAMP), which proposes airport growth over the next 20 years that could significantly impact surrounding communities. The agreement establishes a shared process for analyzing environmental documents, issuing joint comment letters, and potentially hiring consultants to assist with the review under both federal (NEPA) and state (SEPA) environmental laws. Approved by the Burien City Council on February 5, 2018, the agreement outlines how the cities will fund, select, and manage any consultants retained to support this collaborative environmental oversight effort.

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Interlocal Agreement (ILA) executed under RCW 39.34 (Interlocal Cooperation Act) between the cities of Burien, Des Moines, Normandy Park, and SeaTac for coordinated environmental review and commenting on the Port of Seattle’s Sea-Tac Airport Sustainable Airport Master Plan (SAMP). The agreement establishes a process for joint review, analysis, and formal comment on SAMP environmental documents under NEPA and SEPA, including potential Environmental Impact Statements. Covers consultant selection, funding commitments, joint roles and responsibilities, and fund management. Approved by Burien City Council on February 5, 2018. Burien Contract #3180066. Also tagged SAMP Four City ILA.

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