TagNoise Monitors(39)

The Beacon Hill Seattle Community Noise Team recorded aircraft flying over their neighborhood on August 13, 2018, capturing both video and real-time noise levels using a handheld noise dosimeter. Nine videos from that afternoon show aircraft passing overhead between 12:22 PM and 12:37 PM, with a still image from 12:22 PM displaying a reading of 77.8 decibels on the dosimeter. These recordings were compiled as community evidence of aircraft noise impacts in the Beacon Hill area near Sea-Tac Airport.

The City of Phoenix Aviation Department's 2018 Annual Noise Report covers noise exposure trends across Phoenix Sky Harbor International (PHX), Phoenix Deer Valley (DVT), and Phoenix Goodyear (GYR) airports for calendar year 2018. The report recorded 434,252 total operations at PHX, 53,280 noise complaints, and a 99.65% compliance rate with noise abatement procedures. Key highlights include FAA community workshops, implementation of updated flight departure routes, renewal of the Noise and Operations Management System contract, and passage of the FAA Reauthorization bill containing nearly 20 noise-related provisions.

This report from the Port of Seattle presents daily average noise levels recorded at Sea-Tac Airport monitoring stations (NMTs) throughout June 2017. It breaks down sound levels in decibels (dB LEQ) into three categories: community noise, aircraft noise, and a combined total, measured at more than 20 locations surrounding the airport. The data shows that aircraft noise levels frequently exceeded community noise levels at many monitoring sites, with some stations recording combined totals above 65 dB on multiple days.

The Port of Seattle issued Purchase Order A-0000274251 to Exelis Inc. of Herndon, VA, for a Noise Monitoring and Flight Tracking System at Seattle-Tacoma International Airport, originally dated January 21, 2015. Two change orders were subsequently issued: Change Order 1 reduced the contract price by $18,400 (replacing four weather stations with METARS data), and Change Order 2 increased it by $32,802 for additional site modifications, bringing the final total PO amount to $1,001,655.16.

The Larson Davis Model 831 Technical Reference Manual provides comprehensive guidance for operating a handheld precision sound level meter and real-time frequency analyzer. The manual covers 27 chapters and 4 appendices addressing topics such as measurement setup, noise dose and exposure monitoring, time history logging, calibration, and data storage. It serves as a complete reference for professionals conducting acoustic measurements, including those relevant to environmental noise monitoring near airports.

The Port of Seattle is requesting $1.9 million to replace Sea-Tac Airport's aging noise and flight-tracking monitoring system, which has been in use since 1999 and is past its useful life. The outdated equipment has caused over 110 failures in two years, major data losses, and delays in responding to community noise complaints. The new system will include updated noise monitors, analysis software, and a public-facing website to better support FAA reporting, airline compliance programs, and citizen inquiries.