Destination 2030: Air quality conformity

This document outlines the air quality conformity analysis for Destination 2030, the long-range transportation plan for the central Puget Sound region, ensuring that planned transportation projects meet federal and state clean air standards. The region, previously designated as a nonattainment area for carbon monoxide, ozone, and particulate matter, was redesignated as a maintenance area after meeting federal air quality standards, with EPA approvals granted between 1996 and 2001. The conformity process involved consultation with agencies including the EPA, FHWA, and Washington State Department of Ecology to ensure new transportation projects do not cause or worsen air quality violations.

Notes

This appendix documents the positive air quality conformity findings for Destination 2030, the long-range Metropolitan Transportation Plan for the central Puget Sound region. It covers the region’s air quality status as a maintenance area for PM10, CO, and ozone, and describes the consultation process and Transportation Control Measures required under the federal Clean Air Act and related regulations.

V V