If your company operates off-road diesel vehicles used in construction, mining, or other heavy industry, California’s new diesel emission reduction will directly impact your company’s bottom line. In fact, it may not be too early to begin accessing how your company will be spending its share of the $3.5 billion estimated cost of this rule in California to reduce diesel emissions to 85% below 2000 levels by 2020.

The rulemaking applies to common equipment including bulldozers, loaders, backhoes, and forklifts. Generally, at a minimum, diesel soot filters (exhaust retrofit) and accelerated fleet turnover will be required to replace older, dirtier engines. Various sized fleets will be required to meet specific nitrogen oxide (NOx) and particulate matter (PM) emissions limitations in specific years, beginning with the largest fleets.

The regulations and deadlines for emission reductions will vary by size of your vehicle fleet. Here’s a summary: 

  • Small business or municipalities with combined horsepower of 2500 or less: Implementation will start in 2015. 
  • Medium fleets (2501 to 5000 total hp) will begin in 2013. 
  • Large fleets (over 5000 total hp) must begin complying in 2010 – Only three years from now!