TagPollution Control Hearings Board(1532)

A draft memorandum from Parametrix, Inc. to Keith Smith providing a scope and budget for conducting range-finding Water-Effect Ratios (WERs) using receiving water from Miller and Des Moines Creeks. The memo explains the WER methodology, references prior February 1999 range-finding studies, and recommends new tests using just receiving water in case the Port is not

A draft memorandum from Parametrix, Inc. to Keith Smith outlining the scope and budget for conducting range-finding Water-Effect Ratio (WER) studies using receiving water from Miller and Des Moines Creeks. The memo explains the WER methodology, referencing prior February 1999 range-finding results for copper at multiple creek sites, and recommends new tests using just receiving

Email from Erik Stockdale (Ecology NWRO) to Raymond Hellwig and Tom Luster, dated February 17, 2000, summarizing a February 15 meeting with Jim Kelley of Parametrix regarding public comments on the Sea-Tac Airport third runway project (AR 018438–018440, Exhibit 173). Issues raised by commenters Sarah Cooke and Andy Castelle concerned incorrect wetland mitigation ratio calculations

Bill Rozeboom of Northwest Hydraulic Consultants provides analysis for attorney Peter Eglick regarding a January 2000 email from Kevin Fitzpatrick about the IWS lagoon expansion at Sea-Tac Airport. Rozeboom argues that the major driver of the proposed threefold increase in IWS storage capacity is the airport’s Master Plan Improvements, including the Third Runway, rather than

A draft memorandum from Doug Henderson and Linda Logan to Keith Smith summarizing efforts to develop a site-specific water quality criterion (WQC) for copper in Miller, Walker, and Des Moines Creeks, related to stormwater from the third runway project. The memo outlines the phased approach using Water-Effect Ratio (WER) and site-specific metals translator methods, results

A draft memorandum from Doug Henderson and Linda Logan to Keith Smith summarizing efforts to develop a site-specific water quality criterion (WQC) for copper in Miller, Walker, and Des Moines Creeks. The memo discusses two approaches—the Water-Effect Ratio (WER) and the site-specific metals translator—and outlines a phased approach to determine which method would be most

State of Washington interagency policy guidance (AR 034771, Exhibit 2193) adopted by Washington Department of Fish and Wildlife (WDFW) and Washington Department of Ecology (WDOE) for evaluating aquatic mitigation alternatives under section 401 of the Clean Water Act, the Shoreline Management Act (RCW 90.58), and the Hydraulic Code (RCW 75.20). Covers mitigation sequencing (avoiding, minimizing,

Email chain dated February 8, 2000 among Washington State Department of Ecology staff (Roger Nye, Raymond Hellwig, Steve Alexander) regarding fill criteria compliance for the Third Runway at Sea-Tac Airport. Roger Nye describes the 401/404 permit fill acceptance policy developed with Port Of Seattle governing contaminant criteria for borrow sources used in Third Runway construction

Letter dated February 1, 2000 from John Strunk, Associated Earth Sciences, Inc. (AESI Project No. BV97016D) to Roger Nye, Washington Department of Ecology Northwest Regional Office, submitting first and second quarter ground water level measurements from the C1 (Qva) aquifer monitoring well network at Seattle-Tacoma International Airport. Reports on six pressure transducers installed in the

Memorandum BV97016D dated January 31, 2000, from John Strunk (Associated Earth Sciences Inc.) and Mike Riley (S.S. Papadopulos & Associates, Inc.) to Roger Nye, Department of Ecology, responding to nine Ecology comments on the Conceptual Flow Model Boundary Presentation for the Seattle-Tacoma International Airport ground water study. Topics addressed include MODFLOW model setup covering approximately