What's New List Serve Post Display

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.  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.  The tool has been updated to
reflect the amendments considered by the Board in December 2010
and reflects details addressed as part of the 15 day public
comment period.  The Excel spreadsheet is available at:
http://www.arb.ca.gov/msprog/onrdiesel/compliancetool.htm

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 Air Resources Board (ARB or 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. The regulation
applies to diesel fueled trucks and buses with a gross vehicle
weight rating (GVWR) greater than 14,000 pounds that are
privately owned, federally owned, and to publicly and privately
owned school buses. Local and state government owned diesel
fueled trucks and buses are already subject to other ARB
regulations. Reducing emissions from in-use trucks and buses is
necessary to meet federally imposed clean air standards and to
reduce the adverse health effects from truck and bus pollution. 

On December 17, 2010, the staff recommended amendments, which are
presently pending adoption, which would delay the initial
requirement to install particulate matter (PM) retrofit filters
by one year to January 1, 2012 and extend 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
would also defer engine replacements for vehicles without PM
filters two years until January 1, 2015. Prior to 2020,
replacements would be limited to 20 year old or older trucks that
are not equipped with PM filters. By January 1, 2023, most
vehicles would still need to be equipped with an engine meeting
2010 model year emission standards.