State of California officials use the 65 decibel (dB) Community Noise Equivalent Level (CNEL) contour to define an airport's noise impact area. The 65 dB CNEL contour is an annual average noise measurement that is continually validated by noise abatement specialists and acoustical consultants using ANOMS and the FAA's Integrated Noise Model (INM). Included in the annual average is a stricter penalty noise rating for operations during evening hours (between 7 p.m. and 10 p.m.) and an even higher penalty noise rating for operations during nighttime hours (between 10 p.m. and 7 a.m.). Homes located within the airport's 65 db CNEL are eligible to participate in the Airport's Sound Insulation Program. The Airport is currently in the process of sound insulating over 600 homes in Bay Farm Island. Five schools in San Leandro and San Lorenzo will be insulated when the Airport Development Program begins.

Click For G-Contour Map Close Up

Press Release: Oakland International Airport Set To Begin Sound Insulation Program In Alameda