Federal Register #2026-21289

EPA proposal to approve Arizona agricultural PM10 and fugitive-dust rules

The U.S. Environmental Protection Agency is proposing to approve Arizona air-quality rules for agricultural operations and fugitive dust in the West Pinal County PM10 nonattainment area. - Government buyer and agencies: U.S. Environmental Protection Agency (EPA), Region IX; revisions were submitted by the Arizona Department of Environmental Quality (ADEQ). Pinal County fugitive-dust rule revisions are also included in the proposal. - Proposed rules: - AAC R18-2-610.03 applies to commercial crop operations. - AAC R18-2-611.03 applies to commercial dairies, beef cattle feedlots, commercial poultry facilities, and commercial swine facilities. - Requirements: Operators must select and implement best management practices (BMPs) to reduce fugitive PM10 emissions. They must submit annual identified reports describing selected practices and their implementation during the prior year. - Notable crop-operation requirement: The crop rule adds BMP requirements and a 20 percent opacity limit for high-traffic unpaved areas. - Regulatory effect: If approved, the rules would become part of the federally enforceable Arizona State Implementation Plan. This is a proposed regulatory action, not a purchase solicitation. - OEMs and vendors: No product manufacturers, OEMs, or procurement vendors are identified.

Description

The U.S. Environmental Protection Agency is proposing to approve revisions to Arizona’s State Implementation Plan concerning PM10 emissions from agricultural crop and animal operations in the West Pinal County PM10 nonattainment area. The proposal covers two Arizona rules: R18-2-610.03 for commercial crop operations and R18-2-611.03 for specified animal operations. The rules require operators to implement selected best management practices to reduce fugitive PM10 emissions. Comments are due by November 18, 2026.

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