TagNPDES(130)

Researchers tested several filtration media, including leaf compost (CSF®) and soybean hulls, for their ability to remove zinc and reduce toxicity from stormwater runoff at Seattle-Tacoma International Airport. The study was prompted by prior water quality monitoring that linked stormwater toxicity to zinc from building materials in certain airport drainage areas. Results from these controlled laboratory tests were used to select the best-performing media for future on-site stormwater treatment trials at the airport.

Annual Stormwater Monitoring Report prepared by Port Of Seattle pursuant to Special Condition S2.E of the NPDES permit for Seattle-Tacoma International Airport (STIA), covering July 1, 2000 through June 30, 2001. Report covers 14 outfalls per permit condition S2.B; 61 grab and 59 composite samples from 22 storm events; 7-year cumulative totals exceed 400 samples

Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA), prepared by Scott Tobiason, Environmental Management Specialist, Aviation Environmental Programs, Port of Seattle, covering the period July 1, 2000 through June 30, 2001. Report includes NPDES stormwater monitoring data for Sea-Tac Airport storm drainage subbasins, grab and composite sample results for total petroleum hydrocarbons (TPH), fecal

This report, prepared by the Port of Seattle in September 2001, presents the findings of annual stormwater monitoring conducted at Seattle-Tacoma International Airport for the period July 1, 2000 through June 30, 2001. It covers water quality sampling results for pollutants including petroleum hydrocarbons, fecal coliforms, suspended solids, metals, and deicing-related contaminants collected from the airport's storm drainage system. The report documents sampling locations, storm events analyzed, and outfall inspections aimed at assessing the airport's environmental impact on surrounding waterways.

This legal declaration, filed before Washington State's Pollution Control Hearings Board, was submitted by environmental consultant Greg Wingard in support of the Airport Communities Coalition's motion to stay a Section 401 water quality certification related to Sea-Tac International Airport. Wingard details his extensive review of the airport's NPDES stormwater permits since 1994 and describes his attempts to obtain construction outfall monitoring records from the Department of Ecology through Public Disclosure Act requests. His investigation found that Ecology lacked key monitoring data it had previously claimed to possess, directing him instead to contact the Port of Seattle directly for the records.

Internal Ecology meeting notes and talking points dated 8/16/2001 regarding the 401 Water Quality Certification issued for the Third Runway project at Sea-Tac Airport. Ecology staff prepared responses to Port Of Seattle concerns about the certification’s open-ended conditions, covering topics including NPDES major modification, stormwater retrofitting, wetland mitigation, Water Effects Ratio (WER) Study, Walker Creek

Email dated August 16, 2001 from Raymond Hellwig to Tom Fitzsimmons regarding a meeting in Seattle, attaching strategy notes (p3rw-1.doc) on Washington State Department of Ecology’s 401 Certification issued to Port Of Seattle. The attached document outlines overriding messages and specific responses to Port concerns about the 401 Certification, including that substantive changes would require

Email chain between John Drabek and Ann Kenny (Washington State Department of Ecology) dated August 3, 2001, regarding a preliminary deliberative draft Section 401 Water Quality Certification (WQC) for the Sea-Tac Airport Third Runway. Drabek raises question about RCW 90.48 required AKART implementation in NPDES permit reissuances and integration with the 401. Kenny’s original email

Draft Water Quality Certification #1996-4-02325, pages 16-17 of 23, dated August 2001, issued by Washington State Department of Ecology regarding Port Of Seattle Seattle-Tacoma International Airport (STIA). Covers operational stormwater requirements including the approved Comprehensive Stormwater Management Plan (CSMP) Volumes 1-4 December 2000 as revised July 2001, retrofitting of stormwater management facilities, discharge of operational

Deliberative, do-not-disclose email from Ann Kenny (Washington State Department of Ecology) dated July 29, 2001, transmitting a preliminary draft 401 Water Quality Certification (WQC) for the Port of Seattle Third Runway construction at Seattle-Tacoma International Airport (STIA) in the Miller, Walker, and Des Moines Creek watersheds. The draft WQC references JARPA application dated October 25,