TagPollution Control Hearings Board(1532)

Northwest Hydraulic Consultants (nhc), retained by the Airport Communities Coalition, provides preliminary technical review comments on the August 2000 Stormwater Management Plan (SMP) for the proposed third runway at Sea-Tac Airport. The letter highlights numerous deficiencies identified by both nhc and King County reviewers, including unverified facility performance, infeasible mitigation proposals, and inconsistencies that generally

Northwest Hydraulic Consultants, retained by the Airport Communities Coalition, provides preliminary technical review comments on the August 2000 Stormwater Management Plan for the Sea-Tac Airport third runway development. The letter highlights numerous deficiencies identified by King County’s review, including unverified facility performance, infeasible flow control mitigations, and inconsistencies in the SMP. The authors express concern

A letter from Water Resources Consulting LLC to the Washington State Department of Ecology reviewing the Preliminary Comprehensive Stormwater Management Plan for Seattle-Tacoma International Airport. The review critiques the plan’s approach to pollution management, including diversion of stormwater to the industrial waste system, reliance on biofiltration swales, and failure to address metal roof pollution. The

Letter dated September 15, 2000 from Pam Bissonnette, King County Department of Natural Resources, to Tom Luster at Washington State Department of Ecology Shorelands & Environmental Assistance Program. Reviews Port Of Seattle Comprehensive Stormwater Management Plan (SMP) for Master Plan Update Improvements at Sea-Tac Airport against the 1998 King County Surface Water Design Manual. Addresses

A letter from Azous Environmental Sciences to multiple Washington State Department of Ecology officials alerting them to an unidentified tributary to Miller Creek (stream 0371G) that was omitted from the Port of Seattle’s natural resource documents related to the third runway project. The letter notes the tributary is shown in the 1990 King County Sensitive

A letter from Water Resources Consulting L.L.C. to the Washington State Department of Ecology presenting data showing that Lake Youngs outlet temperatures exceed 16°C from mid-June through mid-October, making Seattle Public Utilities water unsuitable for temperature amelioration in Des Moines Creek. The letter argues this undermines the Port Of Seattle’s claim of having secured an

Hart Crowser report prepared for Port of Seattle, dated September 12, 2000 (J-4978-13), evaluating perched groundwater zone interception at Borrow Area 3 for the Sea-Tac Third Runway project. Analyzes shallow perched groundwater flow from northwest to southeast beneath Borrow Areas 3 and 4, its role in sustaining Wetland 29, and the impact of borrow area

Email chain dated September 11, 2000 among Chung K. Yee, Kevin Fitzpatrick, Peter Kmet, Joan Marchioro (ATG), and Tom Luster regarding clean fill criteria language for the 401 Water Quality Certification on the Sea-Tac Third Runway. Key issues include arsenic limits (Pete Kmet argues 20 ppm is too high and should be set at Western

Internal email exchange between Peter Kmet and Kevin Fitzpatrick (Supervisor, Industrial Permit Unit, Water Quality Program, NWRO) dated September 11, 2000, regarding Clean Fill Criteria language for the 401 Water Quality Certification on the Sea-Tac Third Runway project. Document marked ‘Deliberative Document Currently Exempt From Public Disclosure.’ Kmet comments on draft certification conditions E6 (borrow

Email chain dated September 11, 2000 among Chung K. Yee, Kevin Fitzpatrick, Peter Kmet, Joan Marchioro (ATG), and Tom Luster of Washington State Department of Ecology (Ecology) regarding clean fill criteria language for the 401 Water Quality Certification for the Sea-Tac Third Runway project. Key issues include arsenic limits (Pete Kmet concerned 20 ppm is