TagACC(1524)

Draft meeting notes from a July 9, 2001 technical meeting on low flow analysis for the Sea-Tac International Airport Third Runway 401 Permit Decision-Making process. The meeting covered biological effects used in low flow impact determination, Des Moines Watershed mitigation proposals including a 0.1 cfs mitigation flow, and expectations for the process going forward. Attendees

Draft meeting notes from a July 9, 2001 session on low flow analysis for the Sea-Tac International Airport Third Runway 401 Permit decision-making process. The meeting covered biological effects used in low flow impact determination, the Des Moines Watershed mitigation proposal (including a proposed mitigation flow of 0.1 cfs), and Miller and Walker watershed status

A letter from Water Resources Consulting LLC (Peter Willing, Ph.D.) on behalf of the Airport Communities Coalition commenting on the Port of Seattle’s ‘Low Flow Analysis – Flow Impact Offset Facility Proposal’ submitted by Parametrix. The letter criticizes the document as incomplete, lacking reasonable assurance that the Port’s SeaTac Airport plans will meet water quality

Azous Environmental Sciences (AES) submits comments to the US Army Corps of Engineers and Washington State addressing the Port of Seattle’s responses to questions about wetland and stream impacts from the proposed Third Runway at Seattle-Tacoma International Airport. The letter argues that the Port’s proposed fill activities do not comply with Section 404(b)(1) Guidelines and

An internal email from Ann Kenny outlining the information required by Ecology before concurring with any mitigation approach for low flows. The document lists four categories of required information: modeling backup, modeling results evaluation, mitigation proposal, and vault feasibility information. It also notes that written documentation of outcomes from a July 9 meeting will be

Handwritten notes from a July 6, 2001 telephone conference with Kate Snider and Keith Smith, discussing DOE concurrence, Des Moines graphics and vault feasibility, and Walker Creek issues. Topics include low flow logic, biologists, and the need for Port to define issues more clearly for DOE feedback.

A letter from Columbia Biological Assessments to the U.S. Army Corps of Engineers and Washington State Department of Ecology raising concerns about the Port of Seattle’s Soil Fill Acceptance Criteria for the proposed third runway at Sea-Tac Airport. The letter details findings that soils from the Black River Quarry transferred to STIA exceeded MTCA Method

Final draft meeting notes from July 5, 2001 technical meeting on 401 Permit Decision-Making for the Sea-Tac Airport Third Runway, prepared by Rachel McCrea of Floyd & Snider Inc. Attendees include Ann Kenny (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Felix Kristanovich (Foster Wheeler), Paul Fendt and Tom Atkins (Parametrix),

Water Resources Consulting LLC, engaged by the Airport Communities Coalition, responds to the Port of Seattle’s April 30, 2001 reply to earlier 401/404 permit comments regarding stormwater management at Sea-Tac Airport. The document challenges Port claims about impervious area increases, hydrologic divide changes affecting Miller, Des Moines, and Walker Creeks, and the effectiveness of biofiltration

An email chain discussing the non-hydrologic effects of water rights relinquishments on summer low flows, as part of an environmental review process. Kelly Whiting of Metro King County raises concerns about how water withdrawal data for survey non-respondents was handled, suggesting the assumptions overestimate withdrawal rates. The email requests a walkthrough of how these numbers