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Forklifts, Generators, and Compressors (gasoline/propane)
This page provides regulations and guidance documents for nonroad spark-ignition (si) engines over 19 KW (25 horsepower), including many kinds of equipment, such as forklifts, generators, and many other farm, industrial and construction applications. These engines may operate on propane, gasoline, or natural gas. Information on marine propulsion engines is available on the Gasoline Boats and Personal Watercraft page. Information on spark-ignition engines for recreational vehicles is on the Snowmobiles, Dirt Bikes and ATVs page. Information on smaller spark-ignition engines is on the Lawn and Garden (small gasoline equipment) page.
NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
Regulations and Related Documents
- See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to Large SI engines:
- Standards and Certification - 40 CFR part 1048
- Laboratory and Field-Testing Procedures - 40 CFR part 1065
- General Compliance Provisions - 40 CFR part 1068
- Guidance Documents
- Certification Guidance Presentation (PDF) (46 pp, 800K, April 10, 2003)
- Proposed Emission Standards (published May 18, 2007)
- Regulation (Entire document PDF) (297 pp, 4M) or:
- Pages 28097-28146 | PDF Version (372K)
- Pages 28147-28196 | PDF Version (469K)
- Pages 28197-28246 | PDF Version (799K)
- Pages 28247-28296 | PDF Version (882K)
- Pages 28297-28346 | PDF Version (874K)
- Pages 28347-28393 | PDF Version (871K)
- Redline version highlighting proposed changes for 40 CFR part 1048 (PDF) (53 pp, 811K), 1065 (PDF) (83 pp, 1.3MB), and 1068 (PDF) (48 pp, 628K)
- Regulation (Entire document PDF) (297 pp, 4M) or:
- Emission Standards for Stationary Spark-ignition Engines (published January 18, 2008)
- Federal Register Notice | PDF Version (48 pp, 668K)
- Supporting Documents
- Final 2005 Technical Amendments – Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments (published July 13, 2005)
- Fact Sheet: Regulatory Announcement: Changed Test Procedures for Nonroad Engines and Heavy-Duty Highway Engines | PDF Version (4 pp, 134K, EPA420-F-05-036, July 2005)
- Federal Register Notice: Entire Document | PDF Version (194 pp, 7.4MB)
- Preamble and 40 CFR Parts 85-94 (PDF), pages 40419-40462 (43 pp, 762K)
- 40 CFR Parts 1039, 1048, 1051, and 1068 (PDF), pages 40462-40516 (55 pp, 986K)
- 40 CFR Part 1065 (PDF), pages 40516-40612 (97 pp, 8.6MB)
- Technical Support Document and Summary & Analysis of Comments (PDF) (115 pp, 1663K, EPA420-R-05-008, June 2005)
- See Proposed Technical Amendments for the proposed rule, fact sheet, and technical support documents (published September 10, 2004)
- Final Emission Standards (published November 8, 2002)
- Fact sheet: Emission Standards for New Nonroad Engines— Large Industrial Spark-ignition Engines, Recreational Marine Diesel Engines, and Recreational Vehicles (PDF) (409K, EPA420-F-02-037)
- Federal Register Notice | PDF Version (1.1MB)
- Summary and Analysis of Comments (PDF) (1MB, EPA420-R-02-023)
- Final Regulatory Support Document (PDF) (2.5MB, EPA420-R-02-022)
- Regulatory Support Document by Chapter
- Environmental Impacts of Newly Regulated Nonroad Engines (PDF) (24K, EPA420-F-02-033)
- Frequently Asked Questions from Facility Managers and other Owners of Industrial Spark-ignition Engines (PDF) (399K, EPA420-F-02-041)
- How to Maintain or Rebuild Engines Certified to EPA Standards (EPA420-F-02-035) 407K PDF
- Emission Regulations for Stationary and Mobile Engines (EPA420-F-02-034) 479K PDF
- Blue Sky Series Engines (EPA420-F-02-036) 397K PDF
- Plain-Language Format of Emission Regulations for Nonroad Engines (EPA420-F-02-046) 405K PDF
- Large SI transient duty cycles 133K XLS
- Docket index (as of Sept. 13, 2002) 750K WPD or 689K PDF
- "Evaluation of Emissions Durability of Nonroad LPG Engines Equipped with Three-Way Catalysts" Final Report from Southwest Research Institute. Paper copies of this document are available from the National Technical Information Service (NTIS) Publication #PB2002-101191.
- Other documents regarding the final rule are available at http://www.epa.gov/otaq/regs/nonroad/2002/cleanrec-final.htm
- See Proposed Emission Standards fro the proposed rule, supporting documents, advance notice and findings.
- Nonroad Engine and Vehicle Emission Study Report (Publication no. EPA-21A-2001 or EPA460/3-91-002, November 1991)
This "nonroad study" quantifies the contribution of nonroad sources to air pollution, including volatile organic compounds (VOCs), oxides of nitrogen (NOx), carbon monoxide (CO), and particulate matter (PM). The study covers 10 equipment categories, including: lawn and garden equipment, farm and construction equipment, recreational vehicles, marine vessels, and airport service equipment.- Body of report (PDF) (1.8MB)
- Appendices (PDF) (7.7MB)