EXH AR023015: Azous Environmental Sciences Letter to WA Dept of Ecology — Unidentified Tributary Miller Creek Third Runway Docs

A September 2000 letter from environmental consulting firm Azous Environmental Sciences alerts Washington State Department of Ecology officials to an unidentified tributary of Miller Creek that was overlooked in the Port of Seattle's environmental planning documents for Sea-Tac Airport's proposed third runway. The tributary, listed in King County Sensitive Areas records and confirmed to have active water flow, feeds into a Class 2 salmon-bearing stream but was never assessed for potential impacts in the Port's Natural Resource Mitigation Plan. The letter argues this omission—despite four years of environmental analysis—leaves the creek unprotected from planned construction and future aviation operations in the area.

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Letter dated September 15, 2000 from Amanda Azous of Azous Environmental Sciences (PO Box 550, Olga, WA) to multiple Washington State Department of Ecology officials — including Gordon White, Jeannie Summerhays, Erik Stockdale, Kevin Fitzpatrick, John Glynn, Tom Luster, and Ray Hellwig — alerting them to an unidentified tributary to Miller Creek (King County Sensitive Areas folio number 0371G, 1987 and 1990 editions) omitted from Port Of Seattle third runway environmental documents including the Natural Resource Mitigation Plan and Implementation Addendum Appendices A-E (Sheet STIA-XXXX-C2). The tributary is an unclassified stream contributing to Miller Creek, a Class 2 stream with salmonids, located in an area designated by the City of SeaTac for Aviation Operations. Photos taken the week of September 11, 2000 showed water flowing. Azous argues the Port failed over four years of analysis to identify the creek, assess its function, or examine potential impacts, and that associated wetlands also lack identification in Port mitigation documents.

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