Home / News / Newsfeed / CARB Off-Road Diesel Amendments

CARB Off-Road Diesel Amendments

January 27, 2021

Carryover Credits Restart

After the initial expiry dates in Table 1, carryover will restart and have no expiration.

Renewable Diesel

Starting January 1, 2024, fleets will need to demonstrate via annual fueling records (contracts/receipts) that the fleet and rental off-road vehicles solely use renewable diesel (RD) (R99 or R100). If RD is unavailable, the fleet must maintain quarterly records of attempts to obtain R99 or R100. Fleets will affirm compliance with the RD requirements during each annual report. Captive attainment fleets or fleets solely comprised of Tier 4-Final (T4F) (or cleaner) engines are exempt from RD requirements.

Tier Phase-Outs

Even if meeting its final FAT, every fleet must “phase out” Tiers 0-2 engines by the January 1st deadlines in Table 2, via conversion to permanent low use (200 hours per year) or engine removal from California operations. Only Tier 0 (T0) engines have a “backstop” that will ban all California operations starting in 2036.

Minimum Tier for Adding Vehicles

Starting January 1, 2024, there will be new minimum tier requirements for adding vehicles to a fleet, as shown in Table 3.

________________________________

Yorke Engineering specializes in air quality and environmental consulting for stationary and mobile sources, including dispersion modeling, health risk assessments, permitting, emission inventories, air quality compliance systems, etc. Yorke Engineering has assisted over 1,800 customers, including a wide variety of industrial facilities and government organizations throughout California. Learn more about how we can help you here: Air Quality | Yorke Engineering, LLC (yorkeengr.com).

Air Quality Tip

As California transitions to zero-emission technologies, companies may want to investigate incentive programs for on-road and off-road vehicle purchases, vehicle replacements, and infrastructure projects. Specific information about funding is available on the local air district websites. Also, plan ahead to source biodiesel.

View our informative archived Newsletters ...