Off-Road Diesel Engines (SOON Program)

Important Notices:
SCAQMD is no longer accepting applications for
Eligible Surplus Off-Road Opt-In for NOx (SOON) Projects. 
The SOON Program is now closed.

Please check back for SOON Program funding opportunities fall of 2016.

What is the SOON Program?

The South Coast Air Quality Management District’s Surplus Off-Road Opt-In for NOx (SOON) Program provides funding assistance to applicable fleets for the purchase of commercially-available low-emission heavy-duty engines to achieve near-term reduction of NOx emissions from in-use off-road diesel vehicles. In 2008, the SCAQMD Board approved setting aside funding for this purpose. The SCAQMD Governing Board approved the latest SOON Program Announcement on March 4, 2016, thereby funding eligible off-road engine repower or vehicle replacement projects.  Additional SOON Program funding opportunities is anticipated in the fall of 2016.

Who is Eligible for Funding?
  • All large fleets with a total statewide equipment horsepower over 20,000 hp must apply for funding.
  • Fleets below 20,000 hp may voluntarily participate in this program.

SOON Project Applications:

SOON Program Funding for Clean-Up of Off-Road Diesel Vehicles

For your convenience, you may view and download SOON Compliance Plan documents listed below:

How can I Find Out More about the SOON Program?

For technical questions, contact Adewale Oshinuga 909-396-2599.
For incentive funding questions, contact Connie Day 909-396-3055.