Arizona Air Quality Plan Approval for Ozone Standards

Summary

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Maricopa County Air Quality Department (MCAQD or "County") portions of the Arizona State Implementation Plan (SIP). These revisions concern the County's reasonably available control technology (RACT) demonstration for the aerospace coating category and negative declarations for the 2008 8- hour ozone National Ambient Air Quality Standards (NAAQS or "standards") in the portion of the Phoenix-Mesa ozone nonattainment area regulated by the MCAQD, as well as a rule covering emissions of volatile organic compounds (VOCs) from surface coatings and industrial adhesives. We are also approving a local rule that regulates these emission sources under the Clean Air Act (CAA or "the Act").

Compliance Requirements

1. #1

   Comply with Maricopa County Rule 336 'Surface Coating Operations and Industrial Adhesive Application Processes' revised on September 1, 2021; Implement reasonably available control technology (RACT) for volatile organic compound (VOC) emissions from aerospace manufacturing and rework operations in Maricopa County; Maintain negative declarations for the 25 specified coating categories listed in the document (items A-CC in §52.122(a)(3)(i)); File petitions for judicial review in the United States Court of Appeals for the appropriate circuit within 60 days after date of publication in the Federal Register if challenging this action

   Deadline: 2025-02-15(30 days after date of publication in the Federal Register (01/16/2025))

Market Impacts

• Approval of RACT certification and Rule 336 imposes VOC emission control requirements on aerospace coating operations and industrial adhesive processes; Negative declarations confirm no sources exist for 28 specific coating categories, preventing new market entry in these categories without proper VOC controls; Creates market demand for VOC control technologies, monitoring systems, and compliance consulting services; New entrants must comply with Rule 336 VOC emission requirements, creating higher entry barriers

Estimated Monetary Impact

Basis: The regulation document contains no specific monetary information, cost estimates, or penalty amounts. It is an approval action for existing state/local rules (MCAQD Rule 336 and RACT certification) with no new compliance requirements or cost implications stated. The EPA explicitly states this action 'does not impose additional requirements beyond those imposed by State law' and 'does not impose an information collection burden'. No dollar amounts, cost estimates, or economic impact data are provided in the text.; Action items: No action items provided in regulatory document content for cost estimationConfidence: 20%

Validated Company Impacts