TagPort Of Seattle(2410)

This document contains the Port of Seattle's formal objections and responses to interrogatories and requests for production filed by the Airport Communities Coalition (ACC) before Washington State's Pollution Control Hearings Board (Case No. 01-160). The Port identifies over a dozen expert witnesses it intends to call, including specialists in geotechnical engineering, toxicology, hydrology, and groundwater science from firms such as Parametrix, Inc., Hart Crowser, and ENSR Toxicology. The case centers on environmental and pollution concerns related to Sea-Tac Airport operations.

This legal document contains the Port of Seattle's responses to interrogatories filed by the Airport Communities Coalition (ACC) before Washington State's Pollution Control Hearings Board. The Port identifies expert witnesses expected to testify on topics including contaminated site cleanup, stormwater quality, wetland mitigation, and environmental review under SEPA and NEPA for Sea-Tac Airport's Master Plan Update projects. The document outlines each expert's anticipated testimony and the basis for their opinions in connection with Clean Water Act permit requirements.

This document is a deposition of Edward O'Brien, taken on December 21, 2001, as part of a Pollution Control Hearings Board case in Washington State involving the Airport Communities Coalition challenging the Department of Ecology and the Port of Seattle. O'Brien discusses stormwater management techniques, including infiltration facilities, which can be used to treat stormwater quality and mitigate low-flow impacts on surface water systems connected to groundwater. He explains that while infiltration can delay and filter stormwater flows through soil profiles, precise control over timing and flow rates is limited and depends on site-specific soil and hydrological conditions.

Declaration of Kelly Whiting, Senior Engineer at King County Department of Natural Resources, filed before the Pollution Control Hearings Board (PCHB No. 01-133) in Airport Communities Coalition v. State of Washington Department of Ecology and Port Of Seattle. Whiting reviewed the Port Of Seattle’s Comprehensive Stormwater Management Plan (SMP) for Master Plan Update Improvements at

Email from Jim Kelley (Parametrix, Inc.) to Ann Kenny dated December 19, 2001, transmitting a matrix document summarizing changes made to the Port Of Seattle Natural Resources Mitigation Plan (NRMP) to comply with Water Quality Certification #1996-4-02325 (401 Certification) issued September 21, 2001. The attached matrix details resolutions for required mitigation conditions including: monitoring duration

Summary statement for deposition publication submitted pursuant to Order Granting Appellant’s Motion to Publish Depositions of Ecology Managers and CR 30(b)(6) Designated Witnesses dated March 19, 2002, in ACC & CASE v. Dept. of Ecology & Port of Seattle, PCHB No. 01-160. Deponent Peter Kmet, P.E., Senior Environmental Engineer, Toxics Cleanup Program, DOE Headquarters Policy

Northwest Hydraulic Consultants (NHC), retained by ACC (Airport Communities Coalition), wrote to Colonel Ralph H. Graves, Ms. Muffy Walker, and Ms. Gail Terzi of the U.S. Army Corps of Engineers Seattle District (Corps Ref. No. 1996-4-02325) identifying inconsistencies in Port Of Seattle proposals for site development and stormwater management at Sea-Tac Airport Master Plan Update

Pollution Control Hearings Board (PCHB) Order Granting Motion to Stay the Effectiveness of Section 401 Certification No. 1996-4-02325 (amended-1), issued by Washington State Department of Ecology to the Port Of Seattle on September 21, 2001, in case PCHB 01-160. Airport Communities Coalition (ACC) filed the motion; Board members Kaleen Cottingham and Robert V. Jensen heard

A December 2001 technical letter from Northwest Hydraulic Consultants, written on behalf of the Airport Communities Coalition, identifies inconsistencies in the Port of Seattle's stormwater management plans for Sea-Tac Airport expansion. The letter argues that the Port's hydrologic modeling failed to account for the planned commercial redevelopment of borrow pit areas by 2006, and that the Natural Resource Mitigation Plan reverted to an outdated stormwater approach relying on regional detention facilities to be built by others. These gaps, the consultants contend, prevent a full assessment of the airport Master Plan Update's environmental impacts.

Agreement effective December 14, 2001 between Port Of Seattle and City of SeaTac for development of Port-owned properties known as Borrow Area #3 (south of South 200th Street, west of 18th Avenue South) and Borrow Area #4 (north of South 200th Street, west and south of 18th Avenue South and South 196th Street). Resolves outstanding