TagPollution Control Hearings Board(1532)

Exhibit AR033807, WAC 173-340-747 soil concentration calculations for ground water and surface water protection under the Model Toxics Control Act (MTCA), SeaTac Third Runway Embankment Project. Tables derive cleanup levels for hazardous substances including antimony, arsenic, beryllium, cadmium, chromium +3, chromium +6, copper, mercury, nickel, selenium, silver, thallium, zinc, and lead using Equations 747-1 and

A draft document from the Washington State Department of Ecology outlining requirements for a Low Flow Technical Report and a Low Flow Operation Plan. The Low Flow Technical Report must be a comprehensive supplemental report stamped by a licensed Washington civil engineer, containing all calculations, assumptions, and analyses needed for site improvement plans. The Low

This document is a placeholder page indicating that Exhibit 541 was not present in the original documents at the time of scanning. It is assigned administrative record number AR 023655.01. No substantive content is available.

Port of Seattle Port Submittals Binder (AR 035023), containing a King County Superior Court Memorandum Ruling on Application of RCW 47.80.23(2) in case No. 96-2-20357-2 KNT, City of Des Moines et al. (plaintiffs) v. The Puget Sound Regional Council et al. (defendants). The ruling addresses obligations of a regional body (PSRC) when approving a major

Curriculum vitae for Don Weitkamp, Ph.D. (Parametrix Principal), fisheries biologist specializing in salmon habitat issues in estuarine and freshwater environments in the Pacific Northwest. Documents expertise in chinook salmon habitat assessment, biological assessments (BAs), and habitat restoration in Commencement Bay, Green-Duwamish River, Elliott Bay, Columbia River, Snake River, and Puget Sound. Projects include Asarco shoreline

Draft map AR035006 showing restrictive covenants on the west side of Seattle-Tacoma International Airport (northern section). Features include Relocated Miller Creek, Lora Lake, Miller Creek/Lora Lake/Vacca Farm Wetland and Floodplain Mitigation Area, Miller Creek Mitigation Area, Toe of Fill boundaries, Relocated S. 154th Place, and multiple 60-foot ROW designations (30 feet each side from center

Draft map (AR 035005, Exhibit 1015) showing restrictive covenant boundaries, sewer line easements, IWS line, Des Moines Creek, and surveyed OHWM on the south end of Seattle-Tacoma International Airport. Identifies the Tyee Valley Golf Course Mitigation Area and Des Moines Creek Mitigation Area, with a note that mitigation was required by the Washington State Department

Attachment G table detailing wetland acreage impacts and mitigation credits by wetland function for in-basin and Auburn sites, related to the Sea-Tac Airport or associated project. Functions covered include Resident/Anadromous Fish (8.6 acres impacted), Passerine Birds (14.9 acres), Waterfowl (1.9 acres), Amphibians (9.8 acres), Small Mammals (13.2 acres), Exports Organic Matter (10.9 acres), Ground Water

AR 035003. Attachment F table comparing wetland mitigation projects — Vacca Farm, Miller Creek Buffer, Tyee Golf Course, and Auburn Wetland — against Society of Wetland Scientists (SWS) criteria including reinstatement of driving ecological processes, restoration integrated into the landscape, restores a persistent resilient system, results in historic wetland conditions, and performance standards based on

Exhibit AR034998-AR035000, Attachment E: Summary table of compensatory mitigation (on-site and off-site) for watershed, wetland, and stream impacts at Seattle-Tacoma International Airport related to third runway embankment and South 154th Street relocation. Details on-site permanent impacts including filling approximately 980 linear feet of Miller Creek channel, filling 8,500 cy of Miller Creek floodplain, and filling