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onrdiesel -- Truck and Bus Regulation Updated Fact Sheet and Advisory about Enforcement Delay and Reporting Date Changes
Posted: 11 Jan 2011 15:34:28
The California Air Resources Board (ARB or Board) staff has posted Enforcement Advisory 424 and a fact sheet. Enforcement Advisory No. 424 provides information about the enforcement delay of the Truck and Bus Regulation until January 1, 2012. Staff has also posted a factsheet summarizing the compliance requirements consistent with the proposed amendments considered by the Board on December 17, 2010. The Advisory and the factsheet are available at: http://www.arb.ca.gov/dieseltruck. 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. 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. In an update to the Board on December 9, 2009, a staff analysis showed that because of the global recession emissions from trucks and busses covered by the regulation were lower than originally anticipated. The Board directed staff to propose amendments to the Truck and Bus Regulation that would provide additional flexibility for fleets without impairing the State’s ability to meet federal air quality standards. On December 17, 2010, the staff recommended amendments that would delay the initial requirement to install particulate matter (PM) retrofit filters by one year to January 1, 2012 and extended the time that vehicles would comply with PM filters installed. The amendments would also defer engine replacements for 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 have 2010 model year engines or equivalent.