Butte County Air Quality Management District
629 Entler Avenue, Suite 15
Chico, CA 95928
(530) 332-9400

Portable Engine Registration Program (PERP)

CARB Airborne Toxic Control Measure (ATCM)- for Diesel Particulate Matter from Portable Engines Rated at 50 Horsepower and Greater  (effective 2/19/11)

Frequently Asked Questions:  Portable Equipment (effective 4/14/11)

Notice of Portable Equipment Registration (PERP) Cancellation. Engine registrations for non-certified (Tier 0) engines will not be valid after December 31, 2009.  

CARB Portable Equipment Registration Program (PERP)

CARB PERP Fact Sheet

Policy for Approved Uses of PERP (December 2012)

District Fact Sheet for Portable Equipment (December 2012) 

Emission Standards Tier 1-4 Tables

Application Forms

January 25, 2007- the Governing Board of the BCAQMD adopted amendments to Rule 440: Portable Equipment Registration.  The primary objective of the amendments is to allow registration of any existing emission units that should have been previously registered with the State or District. 

January 1, 2006- Airborne Toxic Control Measure for Diesel Particulate Matter from Diesel Engines Rated at 50 Horsepower and Greater (ATCM) requires in-use engines that have not been permitted or registered with the local air district or CARB, to meet the Tier II certification standards for non-road engines.  Since the District is required by State Law to enforce this ATCM, the District encourages all owners/operators of equipment subject to this regulation and the new adopted rules, apply for registration with the District or CARB PERP prior to December 31, 2005.  If you have any questions, please contact Bob McLaughlin or David Lusk at the District office. 

November 21, 2005- the Governing Board of the BCAQMD adopted the new Rule 440: Portable Equipment Registration, and Rule 512: Portable Equipment Registration Fees. Rule 440 establishes a voluntary registration program for portable engines and equipment that operate exclusively within Butte County. Rule 512 establishes the fee schedule for the application and registration of portable engines and equipment. The Governing Board has also authorized an amnesty period to allow sources that are not currently under permit or do not have a current Certificate of Registration, to apply for the required written authorization without being subject to enforcement action for noncompliance.