TagACC(1531)

Internal email dated September 11, 2000 from Peter Kmet to Chung K. Yee (cc: Kevin Fitzpatrick) discussing new Method A soil cleanup levels under MTCA (Model Toxics Control Act) and their use as a basis for defining clean fill. Kmet addresses specific chemicals including arsenic (recommends 7 PPM background value from USGS statewide study instead

This September 2000 internal briefing document from the Washington State Department of Ecology (ECY) outlines the agency's long-running regulatory review of the proposed Third Runway at Seattle-Tacoma International Airport, covering key environmental concerns such as wetland mitigation, stormwater management, and wildlife hazard management. It describes ongoing conflicts with the Port of Seattle over compliance with environmental permits, including a Clean Water Act Section 401 certification that was heavily conditioned in 1998 and subsequently withdrawn by the Port. The document also notes intensifying political pressure from legislators, the Governor's office, and community opposition groups threatening legal action over perceived environmental violations.

Draft memorandum J-4978-28 from Hart Crowser (Douglas Lindquist, Barry Chen PhD P.E., Michael Bailey P.E.) to Jim Thomson P.E. at HNTB, dated September 7, 2000, presenting methods and results of liquefaction analyses for the proposed Third Runway embankment and retaining walls at Sea-Tac, Washington. Analyzed 120 borings with Standard Penetration Test (SPT) results from 112

Fax cover sheet and two-page letter dated September 7, 2000 from Richard A. Poulin of Smith & Lowney, P.L.L.C. to Raymond Hellwig (Director, NW Regional Office, Washington Department of Ecology) and Tom Luster (Permit Coordination Unit, Ecology), on behalf of Citizens Against Seatac Expansion (CASE) and Waste Action Project (WAP). Letter transmits a 60-day Notice

A September 2000 letter from the Airport Communities Coalition to the Washington State Department of Ecology raises concerns about the adequacy of Seattle-Tacoma International Airport's Stormwater Management Plan submitted for 401 Certification. The letter identifies potential flaws in the analysis of base flow impacts on Miller Creek, inconsistencies between the new plan and earlier natural resource mitigation documents, and concerns about proposed changes to watershed basin boundaries. The authors argue that insufficient time was provided for proper review and that the plan fails to fully account for cumulative water quantity impacts of future development.

A September 7, 2000 letter from Northwest Hydraulic Consultants to the Washington State Department of Ecology raises concerns about the adequacy of the Port of Seattle's Stormwater Management Plan for Sea-Tac Airport's Master Plan expansion. The letter identifies significant technical discrepancies in the plan's analysis of baseflow impacts on Miller Creek, questions the reliability of proposed water-rights acquisitions as mitigation, and flags inconsistencies between the stormwater plan and the Natural Resource Mitigation Plan. The consultants also object to the limited time provided for independent review of the four-volume plan and warn that cumulative water quantity impacts of future commercial development in the airport acquisition area have not been adequately assessed.

Email chain dated September 5-6, 2000, among Raymond Hellwig, Chung K. Yee, Kevin Fitzpatrick, and Tom Luster (Washington State Department of Ecology Water Quality Program) and paralegal Andrea Grad (Helsell Fetterman) on behalf of ACC (Airport Communities Coalition). Discusses use of contaminated fill for Port Of Seattle Sea-Tac Airport Third Runway project, Method A soil

A water resources consultant submitted comments to the Washington State Department of Ecology in September 2000, raising serious concerns about the Port of Seattle's proposed Des Moines Creek Flow Augmentation Facility, which was intended to mitigate water quality impacts from SeaTac Airport's third runway expansion. The consultant argues the plan is vague and incomplete, lacking secured water sources, hydrologic analysis, and finalized design details. Key technical problems identified include unreliable water temperature from one proposed source, dependence on continuous technological systems, and a disputed well design that may violate state groundwater protection guidelines.

This document contains a September 2000 email exchange regarding the proposed expansion of Lagoon #3 in the Sea-Tac Airport Industrial Wastewater System (IWS), in which consultant Bill Rozeboom follows up on unresolved comments submitted to the Washington State Department of Ecology. The attached July 31, 2000 comments raise concerns about discrepancies in the lagoon's design capacity, the risk of frequent overflow into Des Moines Creek, and potential wildlife hazards near aircraft movement areas that may violate FAA guidelines. Additional issues flagged include incomplete construction plans, unaddressed lagoon deficiencies, and the apparent overlap of the lagoon expansion project with 3rd runway construction activities affecting nearby wetlands.

A biological assessments consultant, writing on behalf of the Airport Communities Coalition, critiques the Port of Seattle's revised plan to use City of Seattle drinking water to boost summer flows in Des Moines Creek near Sea-Tac Airport. The letter raises concerns that the plan inadequately addresses the toxicity of fluoride and residual chlorine in treated drinking water, which can harm fish and other aquatic life at very low levels. The consultant also warns that differences in temperature, pH, and dissolved oxygen between the makeup water and the creek could cause serious ecological damage if not corrected before augmentation begins.