The City of Portland, Multnomah County, Washington County, Metro, and the Port of Portland have updated the 2018 Clean Air Construction (CAC) Standard, which established diesel engine requirements on agency construction projects to reduce harmful diesel particulate matter emissions. To summarize, the updates delay the start of the engine requirements by a year, shorten the overall implementation timeline by one year, and allow expanded use of high-performing retrofit devices. These changes were made primarily in response to current economic and health conditions resulting from the COVID-19 pandemic. We anticipate the net impact of these changes will be to allow for more effective program implementation while achieving equivalent, or better results in reducing harmful diesel particulate matter. Please visit the Clean Air Construction Overview & Requirements page to view the updated Clean Air Construction Standard.
Public Comment Period on Clean Air Construction Standard Updates
From June 22 through July 24, 2020, the City of Portland, Metro, Multnomah County, Washington County, and the Port of Portland (the Clean Air Construction Partner Agencies) held a public comment period for the proposed updates. In the following weeks, the CAC Partner Agencies reviewed the submitted comments and discussed whether to make any edits to the proposed updates based on the feedback received. The following document details the comments received, the Partner Agencies’ responses, and the Partner Agencies’ decisions regarding changes to the CAC Standard.