TagEDC(11)

This 1973 fact sheet from the Sea-Tac Communities Plan describes a 44.2-square-mile study area surrounding Seattle-Tacoma International Airport, covering communities including Burien, White Center, Normandy Park, and Des Moines, with a 1970 population of 137,000. The document inventories local schools, parks, utilities, and services in the region, and provides socioeconomic data showing a predominantly white, middle-income population with a median household income of $11,238. The plan was jointly sponsored by King County and the Port of Seattle with the goal of maximizing compatibility between the airport and its surrounding communities.

These documents from 1973 describe the formation and early activities of the Policy Advisory Committee (PAC), established to oversee the Sea-Tac International Airport and Vicinity Master Plan Project. The committee brought together representatives from the Port of Seattle, King County, the FAA, and community citizens to monitor project progress, facilitate communication between stakeholders, and review study findings related to noise, land use, and environmental impacts. Regular monthly meetings and community task forces on topics such as noise abatement and drainage were organized to maximize public involvement in shaping airport policy.

This 1973 fact sheet describes a noise exposure study commissioned by the Port of Seattle and King County to measure aircraft noise impacts around Seattle-Tacoma International Airport. Two Seattle firms, Robin M. Towne and Associates and Man-Acoustics and Noise, Inc., conducted measurements at six community locations ranging from 5,000 to 15,000 feet from the runway ends, with plans to expand to 60 sites. The study aimed to produce noise exposure contours, future noise predictions, and alternative land-use recommendations, while also accounting for non-airport noise sources and structural vibrations caused by aircraft operations.

The Environmental Development Commission (EDC) is an official citizens' advisory body established by King County in February 1970 to replace the Planning Commission and advise the County Council and Executive on environmental planning matters. It consists of 134 citizen members organized into nine committees, including a Land Use Committee that plays a central role in the Sea-Tac Communities Plan by developing proposals governing how land is used for housing, commerce, industry, and open space. All EDC meetings are open to the public, and the commission's overarching goal is to ensure land use decisions provide the most positive environmental impact for county residents.

These fact sheets from 1973 outline the structure and goals of the Sea-Tac Communities Plan, a planning study focused on Sea-Tac International Airport and surrounding areas. The Community Involvement Program aimed to engage local residents through a community office, public displays, and citizen representation on advisory committees. Technical oversight was provided by the Technical Advisory Committee (TAC), which brought together representatives from local, state, and federal agencies—including the FAA, EPA, Boeing, and area school districts—to coordinate planning efforts and review recommendations.