In-Use Off-Road Diesel Vehicle Regulation

This page last reviewed December 13, 2011

Documents and Files

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


Fleet Average Calculators (Revised 9/24/09):

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.

The fleet average calculators for large/medium fleets and the calculator for small fleets have been updated to include NEW credits for reduced horsepower and reduced activity directed by AB8 2X and approved by ARB in July 2009, as well as to incorporate the extended periods for double retrofit credit.

Guide to the calculator.
Guide to cutting and pasting fleet information into the calculator from DOORS.

New Large / Medium fleets calculator 

New Small fleets calculator. 
   

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 diesel engine emission factors by model year and horsepower. These emission factors are for calculating fleet averages for the off-road regulation. 

 

 

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)




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