TagNoise Boundary(15)
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2013-09-24Part 150 Noise Boundary Zones Map — Sea-Tac Airport Commission Presentation
Map showing three overlapping noise boundary zones around Seattle-Tacoma International Airport: the 2018 Future Noise Contour (black), the Current Noise Remedy Boundary (green), and the Updated Noise Remedy Boundary in draft form (orange). The map covers the surrounding communities including Des Moines, Normandy Park, Burien, SeaTac, and Tukwila, adjacent to Puget Sound. -
2013-05-30Existing (2013) baseline compared to future (2018) baseline noise exposure contour
This exhibit from the Seattle-Tacoma International Airport 14 CFR Part 150 Noise Study compares the existing 2013 baseline noise exposure contours with projected 2018 baseline contours around Sea-Tac Airport. The data shows that the DNL 65+ dBA noise contour area is expected to shrink from 7.3 to 5.9 square miles, with affected housing units dropping from 3,771 to 1,887 and estimated population exposure falling from 9,712 to 4,879. Nine noise-sensitive facilities remain within the contour in both scenarios, and the maps illustrate how the impacted area covers portions of SeaTac, Burien, Des Moines, Tukwila, and unincorporated King County. -
2011-01-01Sea-Tac Airport 65 DNL Noise Exposure Contour Maps: 2013 Existing vs. 2018 Future (Part 150 Study)
Two aerial noise exposure contour maps for Seattle-Tacoma International Airport showing the 65 DNL boundary for 2013 (existing, in purple) and 2018 (future, in teal/green), with an outer study area boundary in orange. The contours extend over surrounding communities including Burien, SeaTac, Des Moines, Tukwila, and unincorporated King County. -
Forecasted Noise Contour Map 1980, 1985,1990, 2000
Exhibit 1-1 from the Port of Seattle's Sea-Tac International Airport Noise Exposure Update, showing four panels of DNL (Ldn) noise contour maps at the 65, 70, and 75 dB levels for the years 1980, 1985, 1990, and 2000. The contours illustrate the projected lateral and longitudinal extent of aircraft noise impact around the airport's runway alignment over those two decades. -
1979-11-01Airport Noise Control Procedure Manual
This 1979 Airport Noise Control Procedure Manual, approved by Oregon's Department of Environmental Quality, outlines the procedural steps required for compliance with noise control regulations for airports (OAR 340-35-045). It describes how the Department calculates Noise Impact Boundaries for non-air-carrier airports, including the flight operational data and mapping information needed to make accurate assessments. The manual was issued under the authority of ORS Chapter 467 and was designed to minimize the administrative burden on smaller airport facilities.