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Related Material
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Control of Emissions of Air Pollution from Highway Heavy-Duty Engines
- Control of Air Pollution From Motor Vehicles and New Motor Vehicle Engines; Modification of Federal On-board Diagnostic Regulations for Light-Duty Vehicles and Light-Duty Trucks; Extension of Acceptance of California OBD II Requirements
- National Ambient Air Quality Standards for Ozone
- Control of Emissions of Air Pollution From 2004 and Later Model Year Highway Engines and Vehicles; Revision of Light-duty Truck Definition
- Standards of Performance for New Stationary Sources for Nonmetallic Mineral Processing Plants; Amendments
- Finding of Significant Contribution and Rulemaking for Certain States in the Ozone Transport Assessment Group Region for Purposes of Reducing Regional Transport of Ozone
- Control of Air Pollution From Heavy-Duty Engines
- Notice of Filing of Consent Decree Under the Clean Air Act
- Control of Emissions of Air Pollution From Highway Heavy-Duty Engines
- Final Regulations for Revisions to the Federal Test Procedure for Emissions From Motor Vehicles
- Control of Air Pollution From New Motor Vehicles: Proposed Tier 2 Motor Vehicle Emissions Standards and Gasoline Sulfur Control Requirements
- Control of Air Pollution From New Motor Vehicles; Compliance Programs for New Light-Duty Vehicles and Light-Duty Trucks
- Control of Air Pollution From New Motor Vehicles; Compliance Programs for New Light-Duty Vehicles and Light-Duty Trucks
- Approval and Promulgation of Implementation Plans; California State Implementation Plan Revision, Placer County Air Pollution Control District and San Diego County Air Pollution Control District
- Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines: Regulations Requiring On-Board Diagnostic (OBD) Systems--Acceptance of Revised California OBD II Requirements
- Control of Emissions of Air Pollution From New CI Marine Engines at or Above 37 kW
- Control of Diesel Fuel Quality
- Executive Order 13045--Protection of Children From Environmental Health Risks and Safety Risks
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