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onrdiesel -- Truck and Bus Fleet Calculator Update

Posted: 31 Jan 2012 11:04:25
The California Air Resources Board (ARB or Board) staff has
posted an updated version of the Fleet Calculator.  The Fleet
Calculator is an Excel spreadsheet to assist fleet owners in
evaluating various compliance strategies to comply with the Truck
and Bus regulation.
 
This update (version C) now includes a compliance option for log
trucks, and corrects the alternative fueled vehicle credit
calculation.  No other significant changes were made.  The new
version is available at:
http://www.arb.ca.gov/msprog/onrdiesel/compliancetool.htm

The Fleet Calculator is an Excel spreadsheet to assist fleet
owners in evaluating various compliance strategies to comply with
the Truck and Bus regulation.  The calculator allows the fleet
owners to input the engine model year, and emission control
technology assumptions to determine what compliance options may
be best for the fleet each calendar year.  Fleet owners can view
automated compliance strategies for meeting the compliance
schedule based on engine model year or can evaluate more flexible
compliance strategies including the PM filter phase-in option,
compliance credits, and special provisions.
For other information about the regulation, please visit
http://www.arb.ca.gov/dieseltruck.   If you have any questions,
please call 866-6DIESEL (866-634-3735) or email at:
8666diesel@arb.ca.gov

Background

On December 11, 2008, the Board approved for adoption the Truck
and Bus regulation to control emissions from nearly all existing
diesel powered heavy-duty trucks and buses operating in
California.  The regulation became effective under California law
on January 8, 2010. On December 17, 2010, the staff recommended
amendments to the regulation that were subsequently adopted by
the Board on September 19, 2011. The Office of Administrative Law
approved the amendments on December 14, 2011 and the regulation
became effective on the same day.
The amended Truck and Bus Regulation delays the initial
requirement to phase-in installation of PM filters by one year to
January 1, 2012 and extends the time before a vehicle equipped
with a PM filter would have to have an engine that meets 2010
model year emission standards.  The amendments also defer initial
engine replacements for older vehicles without PM filters for two
years until January 1, 2015 at the earliest.  Prior to 2020,
replacements are limited only to 20 year old or older trucks that
are not equipped with PM filters.  By January 1, 2023, most
vehicles will need to be equipped with an engine meeting 2010
model year emission standards.

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