French Valley’s CARB Compliance for Construction Equipment: Meeting New Off-Road Vehicle Emission Standards in Riverside County

French Valley Construction Companies Face Critical New CARB Compliance Deadlines That Could Shut Down Operations

Construction companies operating in French Valley and throughout Riverside County are facing unprecedented challenges as California’s most stringent off-road vehicle emission standards take full effect. The California Air Resources Board (CARB) amendments that began phasing in during 2024 will continue through 2036, with requirements that could significantly impact construction operations.

Understanding the New Off-Road Equipment Regulations

The purpose of these regulations is to reduce emissions from off-road equipment commonly used by construction contractors, including forklifts, bulldozers, cranes, and excavators. The regulations apply to self-propelled off-road diesel-fueled vehicles of 25 horsepower or more, as well as two-engine vehicles. For construction companies in French Valley, this means virtually every piece of heavy equipment on job sites must now comply with these stricter standards.

The amendments require phasing out the oldest and highest-emitting off-road engines—Tiers 0, 1, and 2—from operation in California. Engine “tier” refers to the emissions certification level of an engine, and this provision has a staggered implementation by fleet size and engine tier. Large fleets may no longer operate vehicles with Tier 0 off-road engines, creating immediate compliance challenges for established construction companies.

Critical Compliance Requirements for 2024 and Beyond

Several key requirements are now in effect that directly impact French Valley construction operations:

  • Beginning January 1, 2024, vehicles subject to the regulations are required to only use R99 or R100 renewable diesel fuel, with fleet owners required to maintain documents demonstrating compliance
  • Tier 3 vehicles may no longer be added to any fleet, and medium and large fleets are also restricted from adding Tier 4 interim vehicles and model year 2006 or older on-road vehicles
  • Prime contractors and public works awarding bodies are required to obtain and retain copies of valid Certificates of Reported Compliance for fleet contractors and subcontractors, with neither entity able to award a contract without a valid certificate

The Public Works Contracting Impact

The regulations apply to all “Public Works Awarding Bodies,” broadly defined as any public agency in California that awards contracts for construction, alteration, repair, or improvement of public structures, buildings, roads, or other public improvements. This means construction companies bidding on public projects in Riverside County must now demonstrate CARB compliance before contract award.

For any project awarded after January 1, 2024, Public Works Awarding Bodies are required to obtain valid Certificates of Reported Compliance from all contractors and listed subcontractors before awarding the project, with retention required for three years after project completion.

Financial Implications and Penalties

With fines reaching $10,000 per vehicle per day for failing to comply with regulations, construction professionals must assess their equipment and set up maintenance plans to keep all vehicles in compliance. The amendments are expected to yield $5.7 billion in health benefits and generate additional reductions of approximately 31,087 tons of NOx and 2,717 tons of fine particle pollution from 2024 through 2038.

However, private and government agencies are funding contractors willing to upgrade their fleets with zero-emission vehicle machinery, with California setting a budget of $10 billion to support fleet managers shifting toward ZEV-supporting heavy machinery.

Zero-Emission Vehicle Incentives and Flexibility

The amendments introduce two compliance flexibility provisions as incentives to promote adoption of zero-emission off-road vehicles. Phase-out requirements may be delayed for two years for a Tier 1 or 2 vehicle for each zero-emission vehicle added to a fleet, though zero-emission vehicles must meet certain requirements and be reported to CARB.

California is working to meet the Governor’s goal of 100% zero-emission transportation, where feasible, by 2035 for drayage vehicles and off-road transport refrigeration units and 2045 for all other heavy-duty vehicles.

Professional CARB Compliance Support in French Valley

Given the complexity of these regulations and severe penalties for non-compliance, many French Valley construction companies are turning to professional compliance services. All Smog Motors in French Valley provides specialized CARB compliance services to help construction companies navigate these challenging requirements and maintain operational continuity.

While CARB regulations help maintain clean air in California, they can be a challenge for businesses that use diesel equipment. Professional compliance services understand the system and can streamline the compliance process, providing services that take the headache out of CARB compliance so companies can focus on their business.

Immediate Action Required

Construction companies cannot ignore these regulations or let equipment sit idle. Compliance notices do not disappear with time, and ignoring the rules will result in expensive fines that continue to grow. With the U.S. Environmental Protection Agency granting authorization to CARB to enforce all provisions of the 2022 Off-Road Regulation amendment as of January 10, 2025, enforcement is now fully active.

French Valley construction companies must take immediate steps to assess their fleet compliance status, obtain necessary certifications, and implement compliance strategies to avoid operational disruptions and significant financial penalties. The time for preparation has passed—full compliance is now mandatory for continued operations in California’s construction industry.