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EXH AR023646: Ecology Internal Memo — Toxics Cleanup Program History & Workload at STIA

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This 1999 internal memo from the Washington State Department of Ecology details the history of environmental cleanup oversight at Seattle-Tacoma International Airport, where 15 separate contaminated sites involving jet fuel and gasoline were managed individually under the state's Model Toxics Control Act. The memo describes a series of prepaid staff positions funded by the Port of Seattle to coordinate cleanup efforts with airline and pipeline companies, and the challenges in getting formal Agreed Orders signed. It concludes with an update that a key groundwater study Agreed Order was finally signed in May 1999 after receiving over 600 public comments in opposition.

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AR023646. Internal memo dated August 23, 1999, from Roger Nye to Steven M. Alexander, Section Head, Toxics Cleanup Program, Northwest Regional Office, Washington State Department of Ecology. Documents the Toxics Cleanup Program’s historical involvement at Sea-Tac Airport under MTCA (Model Toxics Control Act), covering 15 individual MTCA sites contaminated primarily with jet fuel and gasoline, with deep groundwater impacts at 70–90 ft bgs. Describes prepaid position history including Glynis Carrosino (1991), Linda Priddy (1992–1993), and Roger Nye (1994–1996), the Port of Seattle (POS), Olympic Pipeline Company, and airline/rental car company responsible parties. Details the Agreed Order process, public comment period (600+ comments), and the final Agreed Order signed May 25, 1999, for a comprehensive groundwater risk assessment. References IRAP, VCP, NPDES, Water Quality section coordination, Responsiveness Summary, and interagency agreements.

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