This document summarizes a proposed anti-idling ordinance for heavy vehicles in the city. It provides background on ozone standards and the main contributors to ozone in the area. The proposed ordinance would limit idling of heavy vehicles over 14,000 pounds to five minutes city-wide, with additional restrictions on idling within 1000 feet of sensitive areas. The document outlines exemptions, enforcement approaches, and next steps to implement the policy if adopted by City Council. Stakeholder feedback has been generally supportive of the proposed ordinance.