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Upcoming 2018 PERP Regulatory and Program Changes (California)

New Portable Equipment Registration Program Regulation Amendments (Effective November 30, 2018):

The California Air Resources Board (CARB) has published a notification of the upcoming 2018 regulatory and program changes to the statewide Portable Equipment Registration Program (PERP) and the Portable Diesel Engine Airborne Toxic Control Measure (ATCM). These changes will be effective on November 30, 2018. Highlights of the upcoming changes are summarized below:

Program Fees and Fee Collection Process

  • Program fees will increase.
  • Instead of submitting payments with applications, CARB will now send a bill upon receipt of a complete application.
  • Placard requests upon renewal now require a full placard replacement fee with a placard request form.

PERP Eligibility

To be eligible for registration in PERP, diesel-fueled portable engines must be:

  • Tier 4 Final, Tier 4 Interim flex, or Tier 3 flex (engines between 50 bhp – 750 bhp)
  • Tier 4 Final, Tier 4 Interim, Tier 4 Interim flex, or Tier 2 flex (engines > 750 bhp)

Exceptions exist for special engine categories (e.g. 2-engine vehicles).

Updated Fleet Requirements

  • All fleets are classified as either a small fleet (≤ 750 cumulative hp) or a large fleet (> 750 cumulative hp).
  • Small fleets are required to follow the tier phase-out schedule.
  • Large fleets may either follow the phase-out schedule or opt to meet the fleet-average emission rates. If a large fleet chooses to comply using the fleet average standards, they must first notify PERP and register all their engines (including district-permitted engines) in PERP by June 30, 2019.

Recordkeeping and Reporting

  • All fleets with low-use engines must submit an Annual Report of hour meter readings each year by March 1.
  • Large fleets that choose to comply with fleet average standards must submit compliance reports by the following dates:
    • March 1, 2020
    • March 1, 2023
    • March 1, 2027
  • Registered diesel engines shall submit hour meter readings upon renewal.
  • Annual emergency-use engine records must be maintained.
  • Air district notification is no longer required for rentals exceeding 9 months.

Credits and Incentives

With the new regulation, certain credits have been added or expanded:

  • Fleets can receive credit for meeting the specified fleet average standards if they submit a fleet compliance report by January 29, 2019.
  • Phase out of Tier 3 engines may be delayed for early retirement of Tier 1 and Tier 2 engines.
  • Large fleets choosing to comply with the fleet average standards can receive credit for electrification in their fleet calculation.

Low-use / Emergency-use

  • Low-use engine hours limit will increase from 80 to 200 hours/year.
  • Low-use and emergency-use only engines may now operate indefinitely.
  • Applications for modification to designate Tier 1 and Tier 2 engines as low- or emergency-use must be submitted at least 6 months prior to the tier phase-out schedule. After the specified dates, Tier 1 and 2 engines may not be newly designated as low- or emergency-use.
  • Applications for modification to designate Tier 3 engines as low- or emergency-use must be submitted in January and include hour meter readings taken at the beginning of January.

New Sales Requirements

The amendment includes a sales prohibition aligned with the phase-out schedule and a sales disclosure requirement.

The updated regulation also includes several other updates including new and revised definitions, changes to portable generator usage limits, and restrictions for operation under emergency events. The phase-out schedule and fleet average standards can be found at the links provided at the bottom of this article.

For more information, contact your EPS consultant or call (404) 315-9113.

More Information:

PERP Website –

PERP 2018 Regulatory and Program Changes Booklet –

Portable Engine ATCM and PERP Regulation Website –

Contact EPS

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