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ordiesel -- Updated Versions of the Large/Medium and Small Off-Road Fleet Average Calculators Available
Posted: 08 Feb 2008 12:29:53
ARB staff have posted updated versions of the Large/Medium and Small Off-Road Fleet Average Calculators for the in-use off-road diesel vehicle regulation. The revised calculators are available at http://www.arb.ca.gov/msprog/ordiesel/documents.htm The Fleet Average Calculators are Excel files designed to assist fleet owners calculate 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 understand what the in-use off-road diesel vehicle regulation will require. These revised versions incorporate the modifications proposed in both notices of public availability of modified text for the regulation (i.e., that posted December 11, 2007, and that posted February 5, 2008). Among other more minor changes, staff made the following updates to the calculators: • Definition of small fleet (total horsepower up to 2,500 hp) was updated; • PM retrofit credit for Tier 0 retirement in a fleet that is decreasing in horsepower; • PM retrofit credit for vehicle replacement/repower with a Tier 4; and • The ability for a portion of a large fleet (i.e., a subset of a large fleet) to comply with the large fleet average targets, even if the total horsepower of the subfleet is less than 5,000 horsepower For further information on the regulation package posted on February 5, please go to: http://www.arb.ca.gov/regact/2007/ordiesl07/ordiesl07.htm The latest version of the revised regulatory language is available at http://www.arb.ca.gov/regact/2007/ordiesl07/2nd15dayattach1.pdf If there are any questions regarding the calculators, please contact Elizabeth Yura at eyura@arb.ca.gov, or by phone at (916) 323-2397.
