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Electronic Code of Federal Regulations
| e-CFR data is current as of December 5, 2019
TITLE 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY SUBCHAPTER U—AIR POLLUTION CONTROLS 
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| FEES FOR ENGINE, VEHICLE, AND EQUIPMENT COMPLIANCE PROGRAMS
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| CONTROL OF EMISSIONS FROM LOCOMOTIVES
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| CONTROL OF EMISSIONS FROM NEW AND IN-USE HEAVY-DUTY HIGHWAY ENGINES
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| CONTROL OF EMISSIONS FROM NEW HEAVY-DUTY MOTOR VEHICLES
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| CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD COMPRESSION-IGNITION ENGINES
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| CONTROL OF EMISSIONS FROM NEW AND IN-USE MARINE COMPRESSION-IGNITION ENGINES AND VESSELS
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| CONTROL OF NOX, SOX, AND PM EMISSIONS FROM MARINE ENGINES AND VESSELS SUBJECT TO THE MARPOL PROTOCOL
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| CONTROL OF EMISSIONS FROM SPARK-IGNITION PROPULSION MARINE ENGINES AND VESSELS
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| CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-IGNITION ENGINES
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| CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES
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| CONTROL OF EMISSIONS FROM NEW, SMALL NONROAD SPARK-IGNITION ENGINES AND EQUIPMENT
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| CONTROL OF EVAPORATIVE EMISSIONS FROM NEW AND IN-USE NONROAD AND STATIONARY EQUIPMENT
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| ENGINE-TESTING PROCEDURES
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| VEHICLE-TESTING PROCEDURES
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| GENERAL COMPLIANCE PROVISIONS FOR HIGHWAY, STATIONARY, AND NONROAD PROGRAMS
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| PREEMPTION OF STATE STANDARDS AND PROCEDURES FOR WAIVER OF FEDERAL PREEMPTION FOR NONROAD ENGINES AND NONROAD VEHICLES
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