TagPollution Control Hearings Board(1532)

This document is an excerpt from Washington State’s Permit Writer’s Manual (July 1999) covering the determination of Water Effect Ratios (WERs) for discharge permits. It outlines procedures for WET testing, sampling methods for fresh and salt water, design flows, toxicity testing species requirements, and guidance on whether acute or chronic WERs should be determined. The

Hart Crowser subsurface conditions data report prepared for HNTB Corporation and Port Of Seattle, project J-4978-06, July 1999, supporting 404 permit for Third Runway embankment at Sea-Tac Airport. Covers generalized geologic and hydrogeologic conditions, subsurface soil conditions, hydraulic conductivity estimates, slug testing, water level data, SPT borings (HC99-B31 through HC99-B47), test pits (HC99-TP1 through HC99-TP21,

Conceptual Flow Model Presentation for the Seattle-Tacoma International Airport (STIA) Ground Water Study, prepared by Associated Earth Sciences, Inc. and S.S. Papadopulos and Associates, Inc. for the Port of Seattle, presented to the Washington State Department of Ecology on June 30, 1999. Document outlines study area including Des Moines Creek, Miller Creek, Bow Lake, City

Memorandum from Ken Ludwa of Parametrix, Inc. to Elizabeth Leavitt, dated June 29, 1999, reviewing the Draft De-Icing Dissolved Oxygen Report related to Sea-Tac Airport runway and taxiway acetate washoff. Comments address dissolved oxygen (DO) water quality standards (8 mg/L Class A, 9.5 mg/L Class AA) in Miller Creek and Des Moines Creek, NW Ponds,

Technical memorandum prepared by HNTB Corporation for the Port of Seattle and Parametrix, Inc. (June 15, 1999) analyzing temporary wetland impacts during Seattle-Tacoma International Airport Third Runway embankment construction. AR 042490. Covers storm water management during construction, temporary fill in wetlands west of runway embankment toe, impacts to Wetland 37 (Miller Creek basin) and Wetland

Email exchange between Washington State Department of Ecology staff (Paula Ehlers, Tom Luster, Raymond Hellwig) regarding the legal and policy basis for 401 water quality certification requirements related to the Port of Seattle’s third runway proposal and Des Moines Creek. The correspondence debates the interpretation of antidegradation provisions under water quality standards and whether a

Email chain (AR 033708–033710) among Washington State Department of Ecology staff Paula Ehlers, Tom Luster, and Raymond Hellwig, with ATG staff Tom McDonald and Joan Marchioro, dated June 1–13, 1999, regarding the Port Of Seattle third runway proposal and 401 water quality certification for Des Moines Creek. Discusses antidegradation requirements under Washington Water Quality Standards

A draft Water Quality Best Management Practices (BMP) assessment prepared by Parametrix, Inc. for the Seattle-Tacoma International Airport (STIA) Master Plan Upgrades. The document describes existing stormwater runoff treatment BMPs and proposed upgrades to comply with redevelopment requirements under the Department of Ecology Stormwater Management Manual for Puget Sound. It outlines a BMP implementation hierarchy

An email from Roger Nye at Ecology to Paul Agid and Elizabeth Leavitt proposing the use of Ecology’s contract consultant SAIC to assist in reviewing technical material related to the Agreed Order for Sea-Tac International Airport (STIA). The email outlines reasons including enhancing credibility of the review process, addressing public calls for independent oversight, and

An internal email from Ken Ludwa to Linda Logan and Paul Fendt analyzing upstream receiving stream data for Miller Creek and Des Moines Creek to assess compliance with water quality standards for copper. Using a Reasonable Potential Analysis methodology, the email finds that neither stream is currently in compliance, and suggests that a Water Effect