In a June 21, 2017 letter to the Port of Seattle, the City of Des Moines raised concerns about the SEPA Determination of Nonsignificance for the Concourse D Hardstand Holdroom project at Sea-Tac Airport, questioning whether the facility was truly limited to serving existing passenger levels or was also intended to support future growth. The city argued that the DNS should clarify how the project relates to the Sustainable Airport Master Plan and future expansion. Des Moines emphasized that its residents already bear disproportionate noise and health impacts from airport operations and requested thorough environmental analysis and appropriate mitigation for any airport facility enhancements.Open full document
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The City of Des Moines submitted comments on the Port of Seattle’s SEPA Determination of Nonsignificance for the Concourse D Hardstand Holdroom project dated June 6, 2017. The letter questions how the project relates to future airport growth and the Sustainable Airport Master Plan, noting that the environmental checklist acknowledges increasing gate shortfalls. The City requests comprehensive analysis of airport facility enhancements for impacts on residents due to disproportionate noise and health effects from Sea-Tac Airport proximity.