In-Use Off-Road Diesel Vehicle Regulation

This page last reviewed March 6, 2008

In-Use Off-Road Vehicle Regulation
Documents and Files

(All documents are provided in (PDF) unless otherwise indicated.)

Fleet Average Calculators (Revised 2/08/08): The Fleet Average Calculators are Excel files designed to assist fleet owners in calculating a fleet's Fleet Average and Fleet Average Targets, based on the equipment model year and horsepower input. The calculators allow fleets to experiment with different turnover, repower, and retrofit strategies to plan for compliance with the in-use off-road diesel vehicle regulation. There is one calculator for large / medium fleets and one for small fleets. Small fleets are municipalities, non-profits, and businesses with less than or equal to 2,500 horsepower total of affected vehicles. Municipalities in rural low-population counties are small fleets, regardless of total horsepower.

For the Medium / Large fleets calculator 


For the Small fleets calculator


(Contact Elizabeth Yura at
eyura@arb.ca.gov with questions.)

 

 
Applications for Membership in the Off-road Implementation Advisory Group (ORIAG): ARB staff would like to form an off-road implementation advisory group (ORIAG), which will be an informal committee established by staff to assist it in implementing the in-use off-road diesel vehicle regulation. We would like to invite interested parties to apply for membership in the ORIAG.
   
Request for Informal Feedback on Revised Regulatory Language: At the July 26, 2007, Air Resources Board meeting, the Board directed staff to make several modifications to the In-Use Off-road Diesel Vehicle regulation, in addition to the changes staff had proposed. The memorandum provides draft regulatory language implementing the Board's direction.
   
Revised Proposed Regulatory Language: On July 25, 2007, ARB staff proposed additional changes to the proposed In-Use Off-road Diesel Vehicle regulation, which was initially published on April 5, 2007 and revised on May 23, 2007. These additional changes were adopted by the Board on July 26, 2007.
   

Notice of staff's suggested changes to the Proposed Regulation for In-Use Off-Road Diesel Vehicles: ARB staff proposed several modifications to the proposed In-Use Off-Road Diesel Vehicle regulation, which was initially published on April 5, 2007. The suggested modifications were presented to and considered by the Air Resources Board on Friday, May 25, 2007. These modifications are contained within the "Staff Suggested Changes to be Presented at Board Hearing" document. 
   

Statewide Off-road Regulatory Cost / Benefit Model: An updated version the Statewide Off-road Regulatory Cost/Benefit Model has been automated to evaluate multiple fleets in a single program. The model is a Visual Basic module that runs within an Access database and utilizes Access queries. The model is described in detail in Appendix H of the April 2007 Technical Support Document. The zipped file is approximately 15 MB, the uncompressed file is approximately 60 MB but will substantially increase in size as it is used. The output of this model only includes equipment capital costs. [NOTE: This model is computationally intensive and may exceed the limits of a computer's operating system depending on how many vehicles are run.] 

Statewide Off-Road Costs Spreadsheet
: This spreadsheet uses the output from the Statewide Off-Road Regulatory Cost / Benefit Model to calculate total statewide costs. These include reporting, maintenance, and other costs.  .

 

 

Table of off-road engine PM and NOx emission factors by model year and horsepower. These emission factors are for calculating PM and NOx fleet averages. 

 

 

Combined ARB and U.S. EPA standards for off-road compression ignition engines.

 

 

Statistics on Responses to Off-Road Equipment (In-Use) Survey (as of 2/15/2006):

Total On-Line Survey Submittals:

318

Total Hard Copy Survey Submittals:

233

Total Responses to Survey:

551

Letter from the ARB to mine owners and operators in California. 

 

 

Letter from the ARB to solid waste and recycing facilities in California. 

 

 

Reliability of DPF-Systems: Experience with 6000 Applications of the Swiss Retrofit Fleet. 

 

 

Letter to 79,000 California Licensed Contractors

 

 

City of Houston Diesel Field Demonstration Project

 

 

New York City Construction Ordinance

 

 

Health Effects of Particulate Matter and Ozone Air Pollution

 

 

 Swiss Clean Air Ordinance for Construction

 

 

California Public Fleet Heavy-Duty Vehicle and Equipment Inventory (TIAX Report)

 

Report

709 KB

Appendix A

(Excel - 156 KB)

Appendix B

(Excel - 100 KB)

Appendix C

Files

ARB Cover Letter
TIAX Cover Letter
Vehicle Survey Form

832 KB
64 KB
(Excel - 20 KB)



Off-Road Equipment (In-Use) Control Measure

 
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