U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 52Subpart D - Subpart D—Arizona
§ 52.119 - Identification of plan—conditional approvals.
§ 52.120 - Identification of plan.
§ 52.121 - Classification of regions.
§ 52.122 - Negative declarations.
§ 52.123 - Approval status.
§ 52.124 - Part D disapproval.
§ 52.125 - Control strategy and regulations: Sulfur oxides.
§ 52.126 - Control strategy and regulations: Particulate matter.
§ 52.127 - Control strategy and regulations: Lead.
§ 52.128 - Rule for unpaved parking lots, unpaved roads and vacant lots.
§ 52.129 - Review of new sources and modifications.
§ 52.130 - Source surveillance.
§ 52.131 - Control Strategy and regulations: Fine Particle Matter.
§ 52.132 - [Reserved]
§ 52.133 - Rules and regulations.
§ 52.134 - Compliance schedules.
§ 52.135 - Resources.
§ 52.136 - Control strategy for ozone: Oxides of nitrogen.
§ 52.137 - [Reserved]
§ 52.138 - Conformity procedures.
§ 52.139 - [Reserved]
§ 52.140 - Monitoring transportation trends.
§ 52.141 - [Reserved]
§ 52.142 - Federal Implementation Plan for Tri-Cities landfill, Salt River Pima-Maricopa Indian Community.
§ 52.143 - [Reserved]
§ 52.144 - Significant deterioration of air quality.
§ 52.145 - Visibility protection.
§ 52.146 - Particulate matter (PM-10) Group II SIP commitments.
§ 52.147 - Interstate transport.
§ 52.150 - Yavapai-Apache Reservation.
§ 52.151 - Operating permits.
§ 52.152 - Original identification of plan.
§ 52.153 - Control strategy and regulations: Ozone.
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