The Clean Air Act established National Ambient Air Quality Standards (NAAQS) for six priority pollutants to protect public health and the environment. Transportation conformity, as required by the CAA, ensures that Federally-funded or approved transportation plans, programs, and projects conform to the air quality objectives established in the State Implementation Plan (SIP).
Procedures for abatement of highway traffic noise and construction noise under 23 CFR 772 and MaineDOT’s Highway Traffic Noise Policy apply to MaineDOT Type I and Type II projects.
The following guidance for complying with Air and Noise defines the process to determine the appropriate level of coordination and assessment of impacts.