TagEcology(797)

Deliberative memorandum dated August 3, 2001 from Katie Walter (Shannon & Wilson, Inc.) to Ann Kenny (Washington State Department of Ecology), transmitting revised draft 401 conditions for the Port Of Seattle Natural Resources Mitigation Plan (NRMP) Auburn Mitigation Site. Document 21-1-12020-001-M1 REVISED.doc covers Auburn Mitigation Site revisions including culvert placement issues on June 28, 2001

Email dated August 3, 2001 from Katie Walter (KLW@shanwil.com) to Ann Kenny, cc Erik Stockdale, regarding fish and stream monitoring recommendations for Port Of Seattle mitigation area. Discusses IBI (Index of Biotic Integrity) methodology limitations and augmentation with monitoring of temperature, turbidity, channel morphology, substrate quality, large woody debris, riparian canopy cover, and fish use.

Email from Dianne Pastore, Ecology Director’s Office, to Raymond Hellwig and Curt Hart (cc: Thomas Fitzsimmons, Sheryl Hutchison) requesting briefing materials for Tom Fitzsimmons’ meeting with the Governor and Paul Isaki on the SeaTac 3rd Runway Project. Materials requested by Dennis Clark, Governor’s Office, by COB Tuesday August 7, 2001. AR 017821, Exhibit 96.

Internal email from Ann Kenny (Ecology) to Ching-Pi Wang, cc Steve Alexander (ECY) and Raymond Hellwig, dated August 2, 2001, transmitting deliberative draft Section 401 water quality certification conditions F1–F4 for the Sea-Tac Airport (STIA) Third Runway Master Plan Update. Conditions address prevention of contaminated groundwater transport from the Airport Maintenance and Operations Area via

This August 2001 King County review evaluates the Port of Seattle's Low Flow Impact Analysis and proposed Flow Impact Offset Facility, which aims to mitigate reductions in stream flows in local creeks—including Des Moines, Miller, and Walker creeks—caused by future airport development. The review finds that while the proposed water storage and augmentation measures substantially offset low-flow impacts during the critical late-summer period, there are significant gaps in documentation, biological assessment, and design details that need to be addressed. Recommendations include professional engineering certification, enhanced biological monitoring, improved calibration documentation, and refinements to the reserve storage facility designs.

Internal email chain dated August 1, 2001 among Washington Department of Ecology staff Thomas Fitzsimmons, Sheryl Hutchison, Dianne Pastore, and Raymond Hellwig regarding communications strategy around the Sea-Tac Airport third runway decision. Topics include scheduling media availability, coordinating with the governor and Isaki, Port Commission meeting on August 14, E-Board contact timing, press attendance at

This 2001 User's Guide from the Washington State Department of Ecology explains how to use spreadsheet workbook tools (MTCASGL and MTCATPH) to calculate soil and groundwater cleanup levels under the Model Toxics Control Act. The guide covers how to enter site-specific data—such as chemical properties, exposure parameters, and hydrogeological characteristics—to determine safe contamination thresholds. It is intended for environmental cleanup professionals working on hazardous substance remediation in Washington State.

Exhibit AR032547 from Washington State Department of Ecology (Ecology), Volume V – Runoff Treatment BMPs, August 2001. Covers phosphorus removal treatment trains (Table 3.1), Enhanced Treatment Menu (Section 3.4) and Basic Treatment Menu (Section 3.5) for stormwater management. Specifies requirements for industrial, commercial, multi-family project sites, arterials and highways discharging to fish-bearing streams or lakes.