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Comment on the Muskegon County Conformity Analysis

Transportation conformity provisions of the Clean Air Act Amendments require metropolitan planning organizations (MPOs) make a determination that the Long-Range Transportation Plan (LRTP), Transportation Improvement Program (TIP), and projects conform to the State Implementation Plan (SIP) and regional emissions will not negatively impact the region’s ability to meet the National Ambient Air Quality Standards (NAAQS). Conformity to the SIP means that the region’s LRTPs and TIPs 1) will not cause any new violations of the NAAQS; 2) will not increase the frequency or severity of existing violation; and 3) will not delay attaining the NAAQS. A demonstration is conducted by comparing emissions estimates generated from implementation of LRTPs and TIPs for analysis years to the motor vehicle emissions budgets (MVEBs) contained in the maintenance SIP.

The purpose of this report is to document the process and findings of the transportation conformity analysis for the nonattainment/conformity area. Part of Muskegon County is a nonattainment area for the 2015 ozone NAAQS and the whole county is a conformity area for the 1997 ozone NAAQS. The larger conformity area will be used as the analysis area for both standards, and hereafter referred to as the Muskegon County nonattainment area. The MPO within the boundary is part of the West Michigan Metropolitan Transportation Planning Program (WestPlan).
Findings of the transportation conformity analysis are for projects within Muskegon County
contained in:
 WestPlan 2040 LRTP, and
 WestPlan 2017-20 TIP.

Click here for the Muskegon County Conformity Analysis