Notes
Minutes of the Technical Advisory Committee (TAC) meeting for the Sea-Tac Noise Exposure Forecast Update, prepared by Port of Seattle Study Staff. The meeting, opened by Study Manager Ed Parks, covered the Integrated Noise Model (INM) devised by the FAA using Ldn (A-scale decibels) to estimate aircraft noise contours, and the Sea-Tac Noise Monitoring System (NMS) including the DA607 portable noise monitor. Key discussants included Hugh Parry (The Parry Company), Bob Wells, Noel Peart (Boeing), Pete Breysse (UW Dept. of Environmental Health), Bob Nelson, Virginia Dana, Bill Holstine, and Marian MacKenzie. Topics included INM validity, DBA noise descriptors, NEF-to-Ldn conversion (Ldn ≈ NEF + 35 dB), ANE/NEF contour comparison with 1974 Sea-Tac/Communities Plan analysis, single-event noise levels, ‘misery index,’ Mansion Hills portable monitoring, and aging effects on aircraft noise. Total study cost ~$80,000 with $55,000 from FAA Planning Grant Program; completion scheduled July 1981. Next TAC meeting scheduled January 20, 1981.