TagSea-Tac Airport(1855)

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

A June 1999 fax from Al Furney to Kristen Stewart of the Airport Communities Coalition (ACC) asks whether ACC members are aware of the Port of Seattle's announced plans to haul rock and concrete to the Sea-Tac Airport site. Furney notes that RCAA (Residents Against Airport Noise, or a related community group) is seeking a copy of Merlino's contract with the Port. The fax was copied to the City of Burien, City of Normandy Park, CASE representative Larry Corvari, and Chris Gower.

Agreed Order #97TC-N122 issued by Washington State Department of Ecology under RCW 70.105D.050(1) directed to Port Of Seattle regarding hazardous substance contamination at Seattle-Tacoma International Airport (STIA). Documents thirteen contaminated sites within the Aircraft Operations and Maintenance Area (AOMA), a 1/2 square-mile area in the southeast quadrant of the airport, contaminated with jet fuel, gasoline,

This 1999 document by C. Gower describes the Miller Creek Basin, a historic Puget Sound salmon stream located in the cities of SeaTac, Burien, and Normandy Park in King County, Washington (Water Resource Inventory Area No. 9). The basin includes several lakes — Arbor, Tub, Reba, Lora, and Burien — and drains into Puget Sound via Miller Creek and Walker Creek. The map highlights the proposed Third Runway site at Sea-Tac Airport within the watershed, raising concerns about potential environmental impacts to this salmon-bearing stream system.

Washington State Department of Ecology Agreed Order #97TC-N122 issued to Port Of Seattle for Seattle-Tacoma International Airport (STIA), pursuant to RCW 70.105D.050(1). Documents hazardous substance releases within the Aircraft Operations and Maintenance Area (AOMA), a half-square-mile southeast quadrant of STIA operational since 1944. Contaminants identified include jet fuel (most abundant by bulk volume), gasoline, industrial

This is a Procedure Manual for stormwater monitoring at Sea-Tac International Airport, developed by Port of Seattle Environmental Services to comply with NPDES Permit WA-002465-1. It outlines sampling locations, monitoring schedules, deicing event protocols, and quality assurance procedures for collecting and reporting stormwater data. The manual covers topics ranging from automatic and manual sampling methods to laboratory accreditation and discharge monitoring report requirements.

In April 1999, the Washington State Department of Ecology requested contract services to independently review a groundwater study being conducted by the Port of Seattle at Sea-Tac Airport. The study aimed to determine whether groundwater contamination at the airport posed a risk to nearby surface waters and public water wells. Contract experts were needed to evaluate the Port's conceptual groundwater models, three-dimensional MODFLOW computer simulations, and proposed field monitoring work.

Email dated April 12, 1999 from Erik Stockdale to Raymond Hellwig and Tom Luster (cc: Erik Stockdale) regarding bird strike hazard (BASH) monitoring at Sea-Tac Airport in-basin mitigation sites Vacca Farm and Tyee Golf Course. Stockdale recounts conversation with Jim Kelley (FAA) about the need for baseline ‘before’ bird use data at mitigation sites prior

A 1999 memo from Washington State Department of Ecology staff member Roger Nye to Assistant Attorney General Kathy Gerla raises legal questions about reinstating a full-time 'prepaid' regulatory position at Sea-Tac Airport, funded by the Port of Seattle. The memo outlines the history of the position from 1992–1996, noting it was cancelled due to the lack of a signed Agreed Order, and describes public concerns that the arrangement gave the Port undue influence over Ecology. Key issues flagged include whether the prepaid role can legally extend beyond the scope of an Agreed Order, whether a new Interagency Agreement is needed, and whether reinstatement would require a public comment period likely to draw strong opposition.