TagLandrum & Brown(62)

This technical report, prepared by Landrum & Brown for the Port of Seattle in January 2024, assesses hazardous materials, solid waste, and pollution prevention concerns related to near-term construction projects under the Sustainable Airport Master Plan at Seattle-Tacoma International Airport. It includes investigations of contaminated fuel farm sites, environmental baseline studies, and regulated building materials surveys (such as asbestos and lead) for several airport facilities slated for redevelopment. The report compiles findings and regulatory correspondence from Washington State Department of Ecology to guide safe handling and cleanup of hazardous materials during planned airport improvements.

The Port of Seattle requested $3.4 million in additional funding to complete environmental review studies required under federal (NEPA) and state (SEPA) law for planned near-term expansion projects at Sea-Tac Airport. The cost increase was driven by a two-year planning delay, expanded public engagement in multiple languages, additional technical analyses including aircraft noise, air quality, and environmental justice studies, and a decision to produce two separate review documents instead of one combined report. The contract with aviation environmental consulting firm Landrum & Brown brings the total project cost to $6.4 million.

The Port of Seattle completed an updated Part 150 Noise and Land Use Compatibility Study for Seattle-Tacoma International Airport (Sea-Tac), which was approved by the Port of Seattle Commission in October 2013 and subsequently received a Record of Approval from the Federal Aviation Administration (FAA). The study identifies noise incompatibilities in communities surrounding Sea-Tac and recommends measures to reduce aircraft noise, building on earlier programs such as a 'fly-quiet' initiative and sound insulation efforts. Sea-Tac is recognized as having one of the most comprehensive airport noise reduction programs in the nation, and this updated study is intended to further minimize the impact of aircraft noise on neighboring communities.

The Seattle-Tacoma International Airport (Sea-Tac) Part 150 Noise and Land Use Compatibility Study, approved by the Port of Seattle Commission in October 2013 and later by the FAA, aims to identify and reduce aircraft noise impacts on surrounding communities. The study developed noise exposure maps for 2013 and projected 2018 conditions, evaluated air traffic control procedures, and considered land use controls to limit noise-sensitive development in high-noise areas. Sea-Tac is recognized for having one of the most comprehensive airport noise reduction programs in the nation, with measures including a 'fly-quiet' program and sound insulation assistance for affected residents.

This report, prepared by Landrum & Brown for the Port of Seattle, documents baseline air quality conditions at Seattle-Tacoma International Airport as of 2016, as part of the Sustainable Airport Master Plan (SAMP) Environmental Review. It inventories emission sources across the airport—including aircraft operations, ground support equipment, and stationary sources like boilers and generators—and compares 2016 emission levels to those from 2014. The findings are intended to support future environmental planning and assessment of proposed airport development.

This is the Existing (2013) Noise Exposure Map for Seattle-Tacoma International Airport, prepared as part of a 14 CFR Part 150 Study Update by Landrum & Brown for the Port of Seattle. The map shows aircraft noise contours around Sea-Tac, indicating that the DNL 65 dBA or greater noise zone covers approximately 5.9 square miles and affects an estimated 1,887 housing units and 4,879 residents, along with 9 noise-sensitive facilities such as schools and churches. The map was certified by Port of Seattle Aviation Planning Director Elizabeth Leavitt as accurately representing existing noise conditions based on the best available data.

This map, prepared by Landrum & Brown for the Port of Seattle's 14 CFR Part 150 Study Update, shows projected aircraft noise exposure around Seattle-Tacoma International Airport for the year 2018. It illustrates three noise contour zones (DNL 65, 70, and 75 dBA), with the total area above DNL 65 dBA covering approximately 7.3 square miles and affecting an estimated 3,771 housing units and 9,712 residents. The map also identifies noise-sensitive land uses such as schools, churches, hospitals, and libraries within the affected area, and was certified by the Port of Seattle's Director of Aviation Planning and Environmental Programs.

This October 2013 final report, prepared by Landrum & Brown for the Port of Seattle, updates the noise exposure maps and noise compatibility program for Seattle-Tacoma International Airport under federal regulations (14 CFR Part 150). It assesses the impact of aircraft noise on surrounding communities and outlines strategies to reduce noise-related conflicts between the airport and neighboring land uses. The study serves as a key planning document guiding Port of Seattle noise mitigation policies at Sea-Tac Airport.