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Regulatory Compliance

Among the numerous regulations currently in effect in California, there are three that dramatically impact gasoline, diesel, and propane-powered equipment owners and operators. The equipment covered under these mandates includes various construction-style units that are widely used for a variety of applications. Both owners or users of the applicable equipment could potentially face considerable fines and long-term financial repercussions for disregarding these directives, so Dahl's Equipment Rentals has made a considerable investment to successfully achieve total compliance with our entire fleet of rental equipment.

So why risk getting an expensive fine or being denied access to your job site because your powered equipment is not registered or compliant with current State regulations?

Most of California’ hard-working companies, contractors, and residents simply don’t have the time and resources to comply with costly air quality laws, so Dahls Equipment Rentals has done the work for you, and can help our customers continue to be innovators and to succeed in an ever-increasingly green business environment. By fulfilling your equipment needs with Dahl's Equipment Rentals you’ll ensure your regulatory adherence, lower your carbon footprint, and improve the quality of the air that you breathe. Make a long-term investment in your future, in our State, and in the health of all Californians.

Beware of companies claiming to provide compliant equipment by making the following simple visual verifications:


Equipment under the Statewide Portable Equipment Registration Program (PERP) should have a reflective metal placard affixed on a vertical surface of the portable engine in a location that is readily visible from a distance.
(as illustrated here)

  • EPA Tier 2 Plate, brownEPA Tier 2 Plate, brown
  • EPA Tier 3 Plate, greenEPA Tier 3 Plate, green
  • EPA Tier 4 Plate, blueEPA Tier 4 Plate, blue


Equipment under the In-Use Off-Road Diesel Vehicle Regulation and the Large Spark Ignition Rule will have a State-issued equipment identification number comprised of 3 in. white characters on a red background.
(as illustrated here)

  • In-Use Off-Road Diesel Vehicle Regulation and the Large Spark Ignition Rule


The specific regulations and their respective equipment are as follows:

California Air Resources Board

Statewide Portable Equipment Registration Program (PERP)

Owners or Operators of portable engines and other types of equipment can register their units under the CARB Statewide Portable Equipment Registration Program (PERP) in order to operate their equipment throughout California without having to obtain individual permits from local air districts. The complete regulation and its details can be found on the California ARB website at: https://ww2.arb.ca.gov/our-work/programs/portable-equipment-registration-program-perp and the program’s FAQs can be found here: PERP FAQs.

In-Use Off-Road Diesel Vehicle Regulation

The In-Use Off-Road Diesel-Fueled Fleets Regulation (Off-Road Regulation) applies to all self-propelled off-road diesel vehicles 25 horsepower or greater used in California and most two-engine vehicles (except on-road two-engine sweepers). This includes vehicles that are rented or leased (rental or leased fleets). The complete regulation and its details can be found on the California ARB website at: https://ww2.arb.ca.gov/our-work/programs/use-road-diesel-fueled-fleets-regulation.

Large Spark-Ignition (LSI) Engine Fleet Requirements Regulation

The Large Spark-Ignition (LSI) Engine Fleet Requirements Regulation applies to operators of forklifts, sweeper/scrubbers, industrial tow tractors, and airport ground support equipment (GSE). The complete regulation and its details can be found on the California ARB website at: https://ww2.arb.ca.gov/our-work/programs/large-spark-ignition-lsi-engine-fleet-requirements-regulation.

  • Our Affiliations

  • California Rental Association
  • Scaffold Access Industry Association
  • American Rental Association

Contact Us

  • Location and Mailing Address:
    1110 N 10th St
    San Jose, CA 95112
    Ph: (408) 292-1888
    Fax: (408) 292-6625

  • Hours of Operation:
    7:00 AM to 5:00 PM Monday thru Saturday
    CLOSED Sundays
    Payments Accepted:
    Cash, Visa, Mastercard, Amex, Discover

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