Posted on

Seattle-Tacoma International Airport Environmental Update

Document Library
State
Ecology

This November 1997 environmental update from Washington State's Department of Ecology covers the Sea-Tac Airport third runway expansion project, detailing the FAA's air quality conformity determination, state environmental certification conditions, and required permits. The Port of Seattle was fined for soil erosion violations during construction of an employee parking lot, and was required to implement stormwater controls, groundwater studies, and erosion management plans. Several permits were under active review at the time, including an NPDES stormwater permit and a 404 wetland permit issued by the Army Corps of Engineers.

Open full document

Notes

Washington State Department of Ecology ‘Focus’ newsletter (November 1997, document 97-2045-WQ) providing environmental update on Sea-Tac Airport third runway expansion project. Covers FAA Record of Decision and Air Conformity determination under Federal Clean Air Act, state environmental certification conditions, NPDES permit renewal public hearing (November 10, 1997), 404 permit by Army Corps of Engineers for Miller Creek and Des Moines Creek modifications, 401/CZM Water Quality Certification, groundwater evaluation Agreed Order, stormwater control per Puget Sound Basin Stormwater Management Manual, Port Of Seattle enforcement penalties ($2,000 and $9,000) for sediment/turbidity violations at SR 518 parking lot construction, fill stockpile from Dupont sand and gravel mine shipped via Duwamish River and SR509, and Comprehensive Pollution Prevention Plan submitted to Ecology’s Hazardous Waste Toxic Reduction Program.

Sidebar On/Off
V V