TagEcology(797)

Draft memorandum dated April 25, 2001 from Katie L. Walter of Shannon & Wilson, Inc. to Ann Kenny and Erik Stockdale of Washington Department of Ecology, regarding outstanding issues for Port Of Seattle resolution on the Natural Resource Mitigation Plan for Sea-Tac Airport proposed Third Runway. Forwarded by Ann Kenny to Raymond Hellwig on May

This Washington State Department of Ecology fact sheet explains how the Model Toxics Control Act (Initiative 97, 1989) governs the cleanup of hazardous waste sites in Washington, outlining who is liable, how sites are identified, and the options available for conducting cleanups. Potentially liable parties — including past and present owners, operators, and those who transported or disposed of hazardous substances — may clean up sites independently or work cooperatively with Ecology through formal agreements such as consent decrees. Note: this document concerns hazardous waste site cleanup regulation and does not contain information related to Sea-Tac Airport noise policy.

Final draft meeting notes from a 401 Permit Decision-Making technical meeting on May 1, 2001, regarding Sea-Tac International Airport Third Runway, prepared by Rachel McCrea of Floyd & Snider Inc. Attendees included John Drabek and Ann Kenny (Dept. of Ecology), Keith Smith (Port Of Seattle), Kelly Whiting (King County), Paul Fendt and Tom Atkins (Parametrix),

Wetland photographs and maps prepared by Parametrix, Inc. for Port Of Seattle, May 2001, as part of the Master Plan Update Improvements for Seattle-Tacoma International Airport. Document AR031166 includes a Wetlands Atlas covering North and West Sides of Sea-Tac Airport, with 15 map sections showing surveyed wetland boundaries, estimated wetland boundaries, and other estimated or

Email dated 5/1/01 from Scott Bender to Katie Walter transmitting an attached memo describing Bender’s opinions about hydrologic impacts to Wetland 39. AR 034818, ECY00021952, Exhibit-2211. Document relates to Ecology environmental review processes involving wetland hydrology assessment.

In this April 2001 letter, Northwest Hydraulic Consultants raised technical concerns on behalf of the Airport Communities Coalition regarding a proposed NPDES permit modification for Seattle-Tacoma International Airport. The firm identified two key issues: a lack of clear, enforceable design criteria for stormwater overflows from the airport's integrated wastewater system (IWS), and an inconsistency between the permit's stormwater detention standards and the stricter standards sought under Section 401 Certification for the Third Runway and Master Plan Update projects. The consultants recommended that the permit be revised and republished for public comment to address these gaps and ensure consistent, enforceable stormwater management requirements.

A Port of Seattle memo from April 2001 summarizes environmental testing of rock aggregate imported from the Black River Quarry for use in the Third Runway embankment project. Testing by environmental consultant AMEC found petroleum hydrocarbons (TPH) and elevated copper levels in some samples, prompting operational changes at the quarry including equipment cleaning and discarding the first hundred tons of rock after asphalt recycling operations. Follow-up testing confirmed that contaminant levels fell below MTCA Method A cleanup standards, and the Port halted material imports from the quarry in mid-October 2000 pending resolution.

Port Of Seattle internal memo dated 04/30/01 from Beth Clark to Paul Agid (cc: Elizabeth Leavitt, Jim Thomson) regarding rock aggregate imported from the Black River Quarry (King County, Washington), owned by Stoneway Rock & Recycling, used in the Third Runway embankment during August–October 2000. Documents AMEC and City Transfer Inc. (CTI) chemical testing for

Email from Jim Kelley (Parametrix, Inc.) to Katie Walter (klw@shanwil.com) dated April 26, 2001, transmitting preliminary draft meeting notes from an April 12, 2001 meeting regarding STIA mitigation site clarifications. The 20-item meeting notes cover Auburn mitigation site hydroseeding, water levels, radius of influence on adjacent wetlands, biofiltration on NRMP Sheet 3.3, dispersal trench elevation

Final draft meeting notes from April 25, 2001 low flow analysis technical meeting for the Sea-Tac International Airport Third Runway 401 Permit Decision-Making process. Attendees included Ann Kenny (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Joe Brascher (AquaTerra), Peter Schwartzman (Pacific Groundwater Group), and Kate Snider (Floyd & Snider Inc.).