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Regulations for Emissions from Vehicles and Engines

Regulations for Emissions from Small Equipment & Tools

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Overview

EPA has adopted emission standards to control both exhaust and evaporative emissions from small spark-ignition engines. Phase 3 exhaust emissions standards took effect in 2011 or 2012, depending on the size of the engine. Evaporative emission standards address fuel permeation through fuel-system components in addition to fuel venting during engine operation.

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List of Related e-CFR Links

See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to small spark-ignition (SI) engines and equipment.

e-CFR link Summary of what you will find
40 CFR Part 1054 Exhaust emission standards
40 CFR Part 1060 Evaporative emission standards
40 CFR Part 1065 Exhaust emission test procedures (for lab and in-field testing)
40 CFR Part 1068 General compliance provisions

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List of Related Regulations

Below is a list of all regulations related to emissions from small equipment and tools. 

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For help on using the table:
Click the regulation titles for additional information, including:
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  • Fact sheets.*

*Note: Rule-related materials vary by rule.

Regulation Title Referenced Tier Level or Phase
(if applicable)
Regulation Date
(Year/Month)
Greenhouse Gas Reporting Program (GHGRP)   2009/10
Final Rule for Control of Hazardous Air Pollutants From Mobile Sources - 40 CFR Parts 59, 80, 85, and 86   2007/02
Final Rule for Control of Emissions of Hazardous Air Pollutants From Mobile Sources - 40 CFR Parts 80 and 86   2001/03
Final Rule for Control of Emissions From Nonroad Spark-Ignition Engines and Equipment Phase 3 2008/10
Direct Final Rule for Amendments to the Phase 2 Requirements for Spark-Ignition Nonroad Engines at or Below 19 Kilowatts Phase 2 2004/01
Final Rule for Phase 2 Emission Standards for New Nonroad Spark-Ignition Handheld Engines At or Below 19 Kilowatts and Minor Amendments to Emission Requirements Applicable to Small Spark-Ignition Engines and Marine Spark-Ignition Engines Phase 2 2000/04
Final Rule for Phase 2 Emission Standards for New Nonroad Spark-Ignition Nonhandheld Engines At or Below 19 Kilowatts Phase 2 1999/03
Final Rule for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines Phase 1 1996/11
Final Rule for Control of Air Pollution; Emission Standards for New Nonroad Spark-Ignition Engines At or Below 19 Kilowatts Phase 1 1995/07
Final Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel Tier 4 2004/06

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