TagStormwater(385)

NPDES Discharge Monitoring Report (DMR) filed by Port Of Seattle for Sea-Tac Airport under permit WA-002465-1, discharge number 001, monitoring period December 1–31, 2001. Parameters reported include flow (max 4,500–4,800 gpm), pH, oil and grease, TSS, BOD5, total glycols, TPH, fecal coliform, priority pollutants, and SCAN results. Signed by Michael D. Feldman, Director of Aviation

Pre-filed testimony of Keith Malcolm Leytham, Professional Civil Engineer and Professional Hydrologist with Northwest Hydraulic Consultants (nhc), submitted on behalf of appellant Airport Communities Coalition (ACC) in PCHB No. 01-160, ACC & CASE v. Dept. of Ecology & Port Of Seattle, dated February 22, 2002. Leytham testifies regarding stormwater facilities, streamflow impacts, surface water hydrology,

AR 053453. Map prepared by Parametrix, Inc. dated February 19, 2002, depicting future subbasins, watersheds, and detention facilities at Sea-Tac Airport. Shows water features including Miller Creek, Old Madres Creek, Walker Creek, detention facilities, proposed stormwater management facilities, reactive low-flow vaults and infiltration facilities, Master Plan impervious surfaces, future watershed boundaries, future subbasin boundaries, discharge

This document is a map from the Port of Seattle showing the comprehensive storm drainage system plan and drainage basins for the Seattle port facility. It identifies stormwater drainage basin color codes, outfall locations, and pump station locations across the property. The figure was entered as Exhibit 379A on February 18, 2002, in proceedings recorded by C. Mangio, RMR, CRR.

This document is a list of environmental and regulatory records relied upon by Greg Wingard, covering Seattle-Tacoma International Airport (Sea-Tac) operations from the 1980s through 2002. It includes NPDES discharge monitoring reports, stormwater management plans, groundwater contamination assessments, and industrial wastewater treatment evaluations involving the Port of Seattle (POS) and various airline tenants such as Alaska Airlines and Northwest Airlines. The records primarily address water quality, stormwater runoff, fuel spills, and environmental compliance at the airport.

This document is a professional curriculum vitae for Dr. K.M. Leytham, Ph.D., P.E., an engineering hydrologist with extensive experience in flood analysis, stormwater management, and catchment hydrology modeling. Dr. Leytham holds degrees from the University of Birmingham, MIT, and the University of Washington, and has worked on projects across North America and internationally. His project experience includes dam safety reviews, flood reduction studies, and reservoir inflow analyses, primarily with Northwest Hydraulic Consultants in Seattle.

This declaration by Paul Fendt, a licensed civil engineer with over 18 years of stormwater experience, was submitted in support of the Port of Seattle's opposition to the Airport Communities Coalition's motion in a 2001 Washington Pollution Control Hearings Board case. Fendt explains how new airport development and impervious surfaces can impact local waterways by increasing runoff and reducing groundwater recharge, and describes the stormwater management systems required by the Washington Department of Ecology for the Port of Seattle's Master Plan Update projects. The document provides technical background on stormwater best management practices (BMPs) and regulatory requirements under Washington State and federal Clean Water Act permits.

This document is a professional resume for W.A. Rozeboom, a civil engineer and hydrologist with 20 years of experience in water resources management, surface water hydrology, and hydraulic modeling. His work has focused primarily on flood control, stormwater management, floodplain mapping, and water rights administration in Washington State, Hawaii, and other regions. This document does not appear to contain content directly relevant to Sea-Tac Airport noise policy.

Two photographs taken by P. Willing on January 28, 2002, document an absorbent boom placed in a stream below the SDS1 outfall, a pollution-control measure used to contain contaminants. The second photo highlights turbid (murky) effluent visible in the stream, indicating water quality concerns at the site. These images appear to be part of an environmental monitoring or spill-response record associated with drainage infrastructure near Sea-Tac Airport.

This document is an Application for Site Certification for the Wallula Power Project in Washington State, submitted by Wallula Generation LLC to the State of Washington Energy Facility Site Evaluation Council. The application details water management plans for the proposed power plant, including how stormwater runoff from the 66-acre site will be captured, routed through oil/water separators, and reused in the plant's cooling tower basin. The applicant argues that this stormwater reuse strategy will reduce groundwater withdrawals from the local gravel aquifer with no net regional impact on water resources.