Off-Road Large Spark-Ignition (Gasoline and LPG) Equipment Activities

This page last reviewed July 29, 2013



forklift

This area of the Off-Road Mobile Sources website pertains to off-road large spark-ignition (LSI) equipment greater than 25 horsepower, including farm, construction, and industrial equipment, powered by gasoline and liquefied petroleum gas (LPG), and other alternate fuels. Typical applications that use LSI engines include forklifts, specialty vehicles, airport service vehicles, large turf care equipment, portable generators, and a wide array of other agricultural, construction, and general industrial equipment. The U.S. EPA has sole authority to control new farm and construction equipment under 175 horsepower. To find out more about the regulatory activities and related information, please see the links below.


What's New

Posted August 13, 2012

ARB has received U.S. Environmental Protection Agency authorization to enforce the Large Spark-Ignition Engine Fleet Requirements Regulation (LSI Fleet Regulation), including the fleet average emission level standards.  Enforcement Advisory 441 informs equipment operators of off-road LSI engine equipment that all provisions of the LSI Fleet Regulation are enforceable and that ARB intends to commence enforcement of all requirements of the regulation.

Posted August 13, 2012

ARB has updated the LSI Fleet Regulation tutorial to reflect regulatory changes that were adopted by the Board in December 2010.  These changes were approved by the Office of Administrative Law on December 14, 2011, and became effective that same day.

Posted January 26, 2012

Final Amended Off-Road Large Spark-Ignition Engine Fleet Requirements. On December 14, 2011, the Office of Administrative Law approved amendments to the regulations for In-Use Off-Road Diesel-Fueled Fleets (Off-Road regulation) and Large Spark-Ignition Engine Fleet Requirements (LSI Fleet regulation). The amendments became effective on that same day, December 14, 2011.  For more information on the amendments to both regulations, please see the website for this rulemaking here.

Posted November 10, 2011

Final Rulemaking Package for the Amendments to the Off-Road and LSI Fleet Regulations. Staff have posted the Final Rulemaking Package for the amendments to the Off-Road and LSI Fleet regulations. The package was filed with the Office of Administrative Law (OAL) on October 28, 2011, and OAL has until December 14, 2011 to make a determination. The package includes the Final Statement of Reasons, which includes ARB's responses to all comments received on the Off-Road and LSI Fleet regulations during the public comment periods.

Posted October 28, 2011

On December 15, 2011, the Air Resources Board will consider proposed amendments to the California regulations and test procedures for SORE/LSI/OHRV/Off-Road CI/Rec Marine.  Specifically, the discussion will focus on test procedures for SORE and Tier 4 Off-Road CI, and the exhaust emission test fuel for off-road SI engines, equipment, and vehicles.  The meeting notice, staff report, and all other regulatory documents can be found at the following link:  Board Hearing Regulatory Materials

Posted June 27, 2011

The California Air Resources Board (ARB) will allow fleet operators to exclude LSI equipment from their fleet average calculations until April 16, 2012 if either the piece of equipment is powered by an engine with a displacement greater than three liters or the equipment is part of a fully emission controlled late model year fleet.  The ARB will also allow fleet operators to exclude limited hours of use LSI equipment from their fleet average calculations.  Mail-Outs #MSC11-20 through #MSC11-22, respectively, provide more details and are available through the LSI Guidance Documents and Advisories Page.

Posted November 2, 2010

Regulatory Documents for Proposed Amendments to the Large Spark Ignition Fleet and In-Use Off-Road Diesel Vehicle Regulations. The Air Resources Board will conduct a public hearing on December 16 or 17, 2010, in Sacramento, to discuss proposed amendments to on-road and off-road regulations to reduce emissions from spark-ignition and diesel vehicles. Specifically, the Board will consider proposed amendments to the Large Spark Ignition Fleet and In-Use Off-Road Diesel Vehicle Regulations. The public hearing notice and staff report have been posted on the Rulemaking Activity web page. ARB staff has posted additional supporting documentation at the AB 1085 Compliance web page. A fact sheet summarizing the proposed amendments to the In-Use Off-road Diesel Vehicle Regulation is also available here.

Posted September 30, 2010

The presentation and proposed regulation language and fact sheets have been posted for the upcoming September/October workshops to discuss proposed amendments to the Off-Road Large Spark-Ignition Engine Fleet Requirements (LSI fleet regulation), the Regulation for In Use Off-Road Diesel Fueled Fleets (off-road regulation), the In-Use Heavy-Duty Diesel-Fueled Vehicles Regulation (truck and bus regulation), the In-Use On-Road Diesel-Fueled Heavy-Duty Drayage Trucks Regulation (drayage truck regulation), and the Heavy-Duty Vehicle Greenhouse Gas Emission Reduction Regulation (tractor-trailer GHG regulation).

Posted September 29, 2010

The workshop notice for the upcoming workshops in September and October is now available. At these workshops, staff will discuss amendments to the Off-Road Large Spark-Ignition Engine Fleet Requirements (LSI fleet regulation), the In-Use Heavy-Duty Diesel-Fueled Vehicles Regulation (truck and bus regulation), the Regulation for In-Use Off-Road Diesel Fueled Fleets (off-road regulation), and the In-Use On-Road Diesel-Fueled Heavy-Duty Drayage Trucks Regulation (drayage truck regulation). 

>Dates and Locations:. All workshops are scheduled from 10:00 AM to 3:00 PM. For additional details, please see the workshop notice.

>Sacramento
Thursday, September 30, 2010
WEBCAST AVAILABLE

El Monte
Monday, October 4, 2010

San Diego
Tuesday, October 5, 2010

Fresno
Tuesday, October 12, 2010
(Live video feed in Bakersfield and Modesto)
>

Posted April 14, 2010

The California Air Resources Board (ARB) will allow fleet operators to exclude LSI equipment with engine displacements greater than three liters from their fleet average calculations until April 16, 2011.  The ARB will also allow fleet operators to exclude fully emission controlled late model year fleets from their fleet average calculations until April 16, 2011. 

Mail-Outs #MSC10-15 and #MSC10-16, respectively, provide more details and are available through the LSI Guidance Documents and Advisories Page.

Posted March 9, 2010

The California Air Resources Board (ARB) will allow fleet operators to exclude retired equipment from their fleet size determinations and fleet average calculations if the proper retirement procedures have been followed. Mail-Out #MSC 10-08 on the Guidance Documents and Advisories Page provides more details.

Posted February 16, 2010

The California Air Resources Board (ARB) will allow operators of airport ground support equipment (GSE) to exclude gasoline-fueled GSE from non-forklift fleet average emission level (FAEL) calculations until January 1, 2013. Mail-Out #MSC 09-44 provides more details.

The ARB also clarified when electric equipment of less than 19 kilowatts may be used in the LSI FAEL standards calculations. Mail-Out #MSC 09-45 provides more details.  

Posted October 27, 2009

On Tuesday, October 20, 2009, OAL approved the "Rulemaking Amendments to the Current Regulations for Large Spark-Ignition Engines with an Engine Displacement Less Than or Equal to One Liter” Hearing Date: November 21, 2008.  It was filed with the Secretary of State, October 20, 2009, as well and will become effective November 19, 2009.  The final approved document is now  available for viewing here.  

Posted September 15, 2009:

NEW! A tutorial on the Fleet Requirements of the LSI Regulation is now available (PDF – 486K)

Posted May 18, 2009:

A new retrofit emission control system has been verified for use on LSI engines with a displacement exceeding three liters and the Exective Order is posted here.

Posted April 16, 2009:

The California Air Resources Board (ARB) will allow fleet operators to exclude fully emission controlled late model year fleets and LSI equipment with engine displacements greater than three liters from their fleet average calculations until April 15, 2010.  In addition, the ARB has agreed to allow LSI equipment with greater than three liter engines and retrofit kits for LSI equipment with greater than three liter engines that were leased or purchased on or before April 15, 2010, to be incorporated into the fleet average calculation for determining compliance with the January 1, 2009 fleet average emission level standard provided the equipment is in inventory and the kits are installed by December 31, 2010. LSI Program Advisory 08-03 provides more details.

Posted December 18, 2008:

The California Air Resources Board (ARB) will allow operators of airport ground support equipment (GSE) to exclude gasoline-fueled GSE from the non‑forklift fleet average calculation or determining compliance with the January 1, 2009 fleet average emission level standard LSI Advisory 08-02 provides more details.

Posted December 17, 2008:

At its November 21, 2008 hearing, the Board adopted amendments to the existing off‑road large spark-ignition (LSI) engine regulations to include more stringent exhaust emission standards and evaporative emission standards for new LSI engines less than or equal to one liter. Additionally, the adopted regulations allow LSI engines used in vehicles similar to off-highway recreational vehicles to use the recreational vehicle test procedures and certification procedures.  These changes do not affect the in-use fleet average requirements.

Posted December 15, 2008:

Posted December 11, 2008:

The California Air Resources Board (ARB) will not begin enforcement of the January 1, 2009 fleet average emission level standard contained within the Fleet Requirements for Off-Road Large Spark‑Ignition (LSI) Engine‑Powered Forklifts and Other Industrial Equipment until April 1, 2009, at the earliest  In addition, the ARB has agreed to allow pieces of equipment and retrofit kits that were purchased on or before March 31, 2009, to be incorporated into the fleet average calculation for determining compliance with the January 1, 2009 fleet average emission level standard. LSI Advisory 08-01 provides more details.

Posted October 16, 2008:

On November 21, 2008, the Air Resources Board will consider proposed amendments to the California regulations and test procedure for large spark-ignition engines with an engine displacement less than or equal to one liter (LSI ≤ 1 L). Specifically, the discussion will focus on standards for LSI ≤ 1 L and other minor changes to the regulatory language.  The meeting notice, staff report, and all other regulatory documents can be found at the following link:

Posted July 31, 2008:

A frequently asked questions document for Large Spark Ignition (LSI) Engine Fleet Requirements is now available.

Posted June 30, 2008: 

Previous Executive Orders have been modified to include wording allowing retrofit installations on equipment that have undergone fuel conversions.New Executive Orders are posted.

Posted March 26, 2008:

On April 21, 2008, ARB hosted a public workshop to discuss proposed amendments to the California regulations and test procedure for small off-road engines (SORE) and large spark-ignition engines with an engine displacement less than or equal to one liter (LSI ≤ 1 L). Specifically, the discussion will focus on standards for LSI ≤ 1 L, modifications to the SORE emissions credit program, and other minor changes to the regulatory language.  This is the second workshop in continuation of the rulemaking process.  The proposed regulations are scheduled to be presented to the Board at the November 20-21, 2008 hearing. (Note: Board Hearing date change)
Workshop Notice
Draft LSI Regulation Order
Draft LSI Test Plan
Presentation (added April 22, 2008)

Posted November 5, 2007:

A new verified retrofit emission control system has been verfied and the Executive Order is posted here.


Posted October 10, 2007:

On November 14, 2007, ARB hosted a public workshop to discuss the recent amendments to California's regulations and test procedures for new SORE and equipment and LSI engines and equipment with engines < 1 liter displacement. Specifically, the discussion will focus on standards for LSI engines<1 liter displacement, modifications to the SORE emissions credit program, and other minor changes in the SORE regulatory language.
Workshop Notice

Posted June 29, 2007:

A new verified retrofit emission control system has been verified and the Executive Order is posted. Also, past interim verification letters have been converted into Executive Orders.  Executive Orders

Posted February 1, 2007:

A Second Notice of Public Availability of Modified Text (2nd 15-day Notice) has been posted. The deadline for public comment is February 16, 2007.
Second Notice of Public Availability of Modified Text
Attachment 1 - Modifications to the Original Proposed Regulation Order

Posted December 1, 2006:

We have posted the Hearing Action and Supplemental 15 Day Notices

Posted October 19, 2006:

We have posted the presentation from the May 25, 2006 Board Hearing. Presentation


Posted June 30, 2006:

We have posted additional information for Nett Technologies Inc. pertaining to the name of the emission control system.
Nett Technologies Inc. information

Posted May 31, 2006:

At its May 25, 2006, board meeting, the Air Resources Board voted to adopt the rules for new emission standards, fleet requirements, and test procedures for forklifts and other industrial equipment.
News Release

Posted May 31, 2006:

We have posted an additional interim letter of verification in accordance with Mail Out #MSC 05-14 dated April 11, 2005.
Interim Letter

In an effort to support introduction of equipment for regulatory compliance or incentive programs in California, ARB staff is using the Interim Verification Procedure to evaluate LSI emission control systems. New information will be posted as additional systems are given interim verifications. Please check periodically for updates.

The proposed procedure will remain as part of LSI regulatory standards to be developed and considered for approval by the Board in 2006. A permanent Executive Order will replace this letter when ARB staff finalizes a proposal for LSI engines before the Board.

Posted April 26, 2006:

The "Notice of Postponement of Rulemaking Action for the Hearing to Consider Adoption of New Emission Standards, Fleet Requirements and Test Procedures for Forklift and Other Industrial Equipment" has been posted to the documents section.
Documents Section

Posted April 6, 2006:

Air Resources Board (ARB) consideration of the LSI rulemaking proposal has been postponed and will be rescheduled to a later date. The month has not been determined at this time, but consideration could be as early as the May 25-26, 2006 Board hearing in Sacramento.

The ARB will post a "Notice of Recalendaring of Rulemaking Action for the Hearing to Consider Adoption of New Emission Standards, Fleet Requirements and Test Procedures for Forklift and Other Industrial Equipment" to the LSI Regulatory Activities web page once the item has been formally rescheduled. Contents of that notice will be provided to the LSI list serve at that time.

The record remains open and all comments regarding the proposal are welcome.

Posted March 12, 2006:

The Notice of Public Hearing to Consider Adoption of New Emission Standards, Fleet requirements, and Test Procedures for Forklift and Other Industrial Equipment(Notice) is now available. The Notice and Initial Statement of Reasons (ISOR or Staff Report) are accessible from the regulatory activities web site.
Regulatory Activities

Posted December 13, 2005:

We have posted an interim letter of verification in accordance with Mail Out #MSC 05-14 dated April 11, 2005.
Interim Letter

In an effort to support introduction of equipment for regulatory compliance or incentive programs in California, ARB staff is using the Interim Verification Procedure to evaluate LSI emission control systems. New information will be posted as additional systems are given interim verifications. Please check periodically for updates.

The proposed procedure will remain as part of LSI regulatory standards to be developed and considered for approval by the Board in 2006. A permanent Executive Order will replace this letter when ARB staff finalizes a proposal for LSI engines before the Board.

Posted September 26, 2005:

We have posted a "Notice of Indefinite Postponement of Rulemaking Action for Public Hearing to Consider Adoption of Emission Standards and Test Procedures for New 2007 and Later Off-Road Large Spark-Ignition (LSI) Engines and Fleet Requirements for Users of Off-Road LSI Engines" here.

Posted June 30, 2005:

The continuation of the Off-Road Large Spark Ignition (LSI) Engine Board item scheduled for July has been postponed to September 15 & 16, 2005. The meeting will be held at the South Coast Air Quality Management District Offices.

Posted June 30, 2005:

The presentation from the June 23, 2005 Board Hearing is now available.

  • Presentation - Control Measure to Reduce Emissions frm Off-Road Large SPark-Ignition (LSI) ENgines, ARB (PDF 613K)

Posted May 6, 2005:

The "Notice of Public Hearing to Consider Adoption of Emission Standards and Test Procedures for New 2007 and Later Off-Road Large Spark-Ignition (LSI) Engines and Fleet Requirements for Users of Off-Road LSI Engines" and all of the regulatory documents for this item, including the "Staff Report: Initial Statement of Reasons for Proposed Rulemaking" and its attachments are now available here.

Posted April 28, 2005:

The presentation for the Draft Proposal to Reduce Emissions from Off-Road Large Spark-Ignition Equipment Greater Than 25 Horsepower that was discused at the March 22 and March 24, 2005 workshop is now available.

  • Presentation - Draft Regulatory Proposal and Draft Retrofit Verification Protocol, ARB (PDF 613K)

Posted April 18, 2005:

The Interim Verification Procedure For Retrofit Systems To Reduce Hydrocarbon And Oxides Of Nitrogen Emissions From Off-Road Large Spark Ignition Engines And Equipment Greater Than 25 Horsepower is now available.

Posted March 16, 2005:

The Draft Proposal to Reduce Emissions from Off-Road Large Spark-Ignition Equipment Greater Than 25 Horsepower to be discussed at the March 22 and March 24, 2005 workshop is now available here.

The Corrected Manufacturers Advisory Correspondence (MAC) for voluntary early certification of low-emission off-road LSI engines is now available here.

Posted March 1, 2005:

A public workshop for Off-Road Large Spark Ignition Equipment will be held on March 22, 2005, in Fresno and will be repeated on March 24, 2005, in Sacramento.
Workshop Notice

Posted January 26, 2005:

The Manufacturers Advisory Correspondence (MAC) for voluntary early certification of low-emission off-road LSI engines is now available here.

Posted August 27, 2004:

The public workshop that was to be held in Fresno on September 14 is postponed. We will advice interested parties when a new date is available.

Posted August 24, 2004:

The staff presentation for the public workshop being held on August 25, 2004 in El Monte and August 26, 2004 in Sacramento will be available prior to the meetings.
Presentation

Posted August 17, 2004:

The agenda is now available for the August 18, 2004, working group meeting.
Agenda

TheDraft Proposal for a Retrofit Verification Protocol for Off-Road Large Spark-Ignition Equipment Greater Than 25 Horsepower is now available.



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