AASHTO PH18-1 Download


Practitioner's Handbook #18: Addressing Air Quality Issues in the NEPA Process for Highway Projects
Handbook / Manual / Guide by American Association of State and Highway Transportation Officials, 06/01/2017



Handbook PH18-1 is intended to assist practitioners in addressing air quality issues, including transportation conformity requirements, as part of the National Environmental Policy Act (NEPA) process for highway projects. The Handbook summarizes key requirements under NEPA and the Clean Air Act and provides advice for documenting compliance with the Clean Air Act requirements as a part of the NEPA process.

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