South Coast AQMD Rule 2305, known as the Warehouse Actions and Investments to Reduce Emissions (WAIRE) Program, requires warehouses greater than 100,000 square feet to reduce nitrogen oxide (NOx) and diesel particulate matter (PM) emissions associated with their operations to help meet federal air quality standards and improve public health, especially in nearby communities. NOx is the key pollutant that causes smog in our region, while diesel PM is a powerful cancer-causing air toxic.

During a three-year phase-in period, warehouse owners and operators subject to Rule 2305 are required to submit reports to South Coast AQMD to provide details on their applicable warehouse operations and compliance. Calendar year 2022 was the first compliance year for Phase 1 warehouses which included warehouses of 250,000 square feet or more. Under Phases 2 and 3, smaller warehouses that meet criteria specified in the rule will enter the program and will be responsible to submit an Annual WAIRE Report (AWR) in accordance with the following schedule.

Phase 1 warehouse operators are required to submit their second Annual WAIRE Report by January 31, 2024. For more information, visit our WAIRE Program webpage.