Proposed rule · 2026-22585

Approval and Promulgation of State Plans for Designated Facilities and Pollutants; Arizona; Control of Emissions From Existing Municipal Solid Waste Landfills

The Environmental Protection Agency (EPA) is proposing to approve a State plan submitted by the Maricopa County Air Quality Department (MCAQD). This plan pertains to the regulation of landfill gas and its components from existing municipal solid waste (MSW) landfills. Maricopa's county plan was submitted in response to the EPA's promulgation of Emissions Guidelines and Compliance Times for MSW landfills. This action is being taken under the Clean Air Act (CAA).