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arbcombo -- Amendments to the Off-Road and LSI Fleet Regulations are now in effect.

Posted: 23 Dec 2011 09:10:56
On Wednesday, December 14, 2011, the Office of Administrative Law
approved amendments to the regulations for In-Use Off-Road
Diesel-Fueled Fleets (Off-Road regulation), and Large
Spark-Ignition Engine Fleet Requirements (LSI Fleet regulation). 
 The amendments became effective on that same day, December 14,
2011.  For more information on the amendments to both
regulations, please see the website for this rulemaking at:
http://www.arb.ca.gov/regact/2010/offroadlsi10/offroadlsi10.htm 

For more information on the amendments to the Off-Road
regulation, including a list of the provisions currently being
enforced, please see the Off-Road regulation website at:
www.arb.ca.gov/ordiesel. 


Background

The Off-Road regulation was approved in 2007, and is intended to
significantly reduce emissions of diesel particulate matter (PM)
and oxides of nitrogen (NOx) from the over 150,000 in-use
off-road diesel vehicles that operate in California by requiring
their owners to modernize their fleets and install exhaust
retrofits.  The LSI fleet regulation was approved in 2006, and is
intended to reduce hydrocarbon and oxides of nitrogen (HC+NOx)
emissions from the nearly 90,000 LSI vehicles operating in
California by accelerating the introduction of new clean vehicles
and the retrofit or retirement of uncontrolled in-use vehicles.

On December 17, 2010, ARB staff recommended amendments to both
regulations that were subsequently adopted by the Board and
approved by the Office of Administrative Law on December 14,
2011.   The amended Off-Road regulation delays the initial
compliance date for all fleets by four years, provides a path to
compliance without any required retrofits, simplifies the
regulation, and lowers the cost of the regulation significantly
while still maintaining progress toward clean air.  The
amendments also include additional minor modifications to clarify
or simplify regulatory provisions.  The amended LSI fleet
regulation adds and modifies several definitions, reinstitutes
the limited hours of use provisions, broadens compliance
extension flexibility, and makes other minor clarifications.

Although the amended Off-Road regulation is now in effect, the
Air Resources Board (ARB) will not be enforcing the performance
requirements of this regulation until authorization is received
from the United States Environmental Protection Agency (U.S.
EPA).  However, please note that the reporting, labeling, idling,
and disclosure requirements of the Off-Road regulation are in
effect and currently being enforced throughout California.  

For general information regarding ARBís diesel regulations,
please contact ARBís Diesel Hotline at 866-6DIESEL
(866-634-3735), or by email at 8666DIESEL@arb.ca.gov.

For more information on the Off-Road regulation, please visit the
Off-Road regulation website at: www.arb.ca.gov/ordiesel

For more information on the LSI Fleet regulation, please visit
the LSI Equipment Activities website at: www.arb.ca.gov/lsi 



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