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The Bay Area Air Quality Management District regulates stationary sources of air pollution in the nine counties that surround San Francisco Bay: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, southwestern Solano, and southern Sonoma counties.

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  • Judy Williams
  • Administrative Analyst, Strategic Incentives
  • 415 749-4738
  • Anthony Fournier
  • Director of Strategic Incentives, Strategic Incentives
  • 415 749-4961


Carl Moyer Program

415 749-4961

Full BAAQMD Directory

Off Road Engine Replacement

Funding is provided to reduce emissions from off-road equipment by replacing an older engine with a newer, cleaner engine in an existing piece of equipment.


The Air District will start accepting project applications for the Carl Moyer Program Year 16 funding cycle on Monday July 14, 2014.

Funding is available to:
  • Replace an older engine with a cleaner engine in an existing piece of equipment (with possible retrofit option) up to 85% of project cost.

This project option is most appropriate when 1) the existing equipment is still structurally sound with many years of future operational life, 2) there is a replacement engine option available from the manufacturer, and 3) the costs are not prohibitively expensive when compared to the value of the overall piece of equipment. The project will require the addition of a CARB-verified retrofit emission control device when 1) the replacement engine has a device verified to work with it and 2) it can be installed without posing safety risks or violations set forth by CARB and OSHA. The only exception to this requirement is for equipment currently exempt from regulation. Those equipment owners may choose to opt-out of the retrofit requirement.

Eligibility and Criteria FAQ's
Upcoming Workshops & Events
  • July 14 2014 - Start of the Carl Moyer program Year 16 funding cycle

Judy Williams, Strategic Incentive Division, Administration Analyst, 415-749-4738

Off-Road Regulatory Information

All Carl Moyer Projects require at least three years of emission reductions that are surplus to any regulation. This requires determining the regulatory status of a piece of equipment before being able to determine incentive eligibility.

Regulations for off-road equipment vary according to the engine type and application of each piece of equipment. All off-road equipment powered by large spark ignition engines fall under the LSI Fleet Rule. All off-road equipment operating at ports and intermodal rail yards fall under the Cargo Handling Equipment (CHE) Regulation. Most diesel equipment operating in construction, mining, rental and heavy industry fall under the Off-Road Regulation. Off-road equipment operating at least 50% of the time in qualifying agricultural activities is currently exempt from any regulation. Compliance dates vary by type of regulation and fleet size.

Additional information on off-road regulations can be found at California Air Resources Board (CARB) Diesel Activities - Mobile Vehicles and Equipment website.

Additional Information

Verified Retrofit Devices

About the funding source: Carl Moyer Program

Last Updated: 7/11/2014