Appendix E: Comments Concerning the Final Environmental Impact Statement — Sea-Tac Airport Master Plan Update

Appendix E contains public comments submitted in response to the Final Environmental Impact Statement (FEIS) for the Seattle-Tacoma International Airport Master Plan Update. Commenters include the Highline Water District, the Washington State Department of Ecology, the U.S. Public Health Service, and the Washington State Department of Natural Resources, raising concerns about groundwater contamination, the handling of aircraft de-icing glycols, storm water runoff, and surface mining permit requirements for borrow sites on Port of Seattle property. The agencies generally called for stronger mitigation measures and clearer answers to environmental questions before approving the proposed airport expansion.

Notes

Appendix E of the Final Environmental Impact Statement (FEIS) for the Seattle-Tacoma International Airport Master Plan Update, containing public agency comment letters dated March–April 1996. Includes: (1) Highline Water District letter from Keith A. Harris to Dennis Ossenkop (FAA Northwest Mountain Region) and Barbara Hinkle (Port Of Seattle Health, Safety and Environmental Division), raising unanswered groundwater contamination and aquifer recharge mitigation questions from the July 27, 1995 draft EIS; the District holds water rights to 17.5 million gallons per day (MGD). (2) Washington State Department of Ecology letter from Elizabeth J. Phinney to Barbara Hinkle commenting on glycol deicing collection, the Industrial Waste System (IWS) dissolved air flotation plant, NPDES permit, Midway Sewer District, total suspended solids (TSS), oil and grease, and additional IWS loading from airport expansion. (3) U.S. Department of Health and Human Services / Centers for Disease Control and Prevention (CDC) / Public Health Service letter from Kenneth W. Holt addressing storm water runoff, hazardous substances sites, Spill Prevention Control and Countermeasures Plan, and Hazardous Substances Management and Contingency Plan under NEPA. (4) Washington State Department of Natural Resources letter from Kaleen Cottingham regarding Washington State Surface Mining Act (RCW 78.44), Surface Mine Reclamation Permit requirements, borrow sites, and Port Of Seattle ownership exception.

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