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ordiesel -- Revision for Regulatory Advisory Mail-Out 13-25 for In-Use Off-Road Diesel Vehicle Fleets

Posted: 11 Feb 2014 13:40:48
A revised advisory, informing all off-road fleets as to how ARB
staff will proceed with enforcement of the In-Use Off-Road Diesel
Vehicle Regulation, is now available. The previous advisory,
13-25, inadvertently stated that beginning January 1, 2014, and
until January 1, 2016, small fleets could only add to their fleet
a vehicle with a Tier 1 engine if the vehicle had been previously
reported and labeled with an Equipment Identification Number
(EIN).  However, small fleets may continue to add vehicles with
Tier 1 engines until January 1, 2016, regardless of reporting or
EIN status.

The revised advisory Mail-Out #MSC 14-1 can be accessed from the
In-Use Off-Road Diesel Vehicle website at

For additional information about complying with the In-Use
Off-Road Diesel Vehicle Regulation, including fact sheets,
advisories, answers to frequently asked questions, and DOORS user
guides, please visit our Knowledge Center at
http://www.arb.ca.gov/msprog/ordiesel/knowcenter.htm, or call our
DOORS helpline at 1-877-59DOORS (1-877-593-6677).


The regulation for In-Use Off-Road Diesel Vehicles first became
effective under California law on June 15, 2008.  This regulation
is intended to reduce harmful emissions from diesel powered
construction, mining, and other industrial vehicles operating in
California that have propulsion engines that are 25 hp or
greater.  Fleets were required to initially report their off-road
diesel vehicles to ARB in 2009 via DOORS.  In addition, fleet
owners are currently subject to restrictions on unnecessary
idling, and large fleets will be subject to accelerated
replacement/repower requirements beginning July 1, 2014.

If you have any questions regarding the regulatory requirements,
please contact the DOORS hotline at (877) 59-DOORS (877-593-6677)
or by email at doors@arb.ca.gov.  For further information about
the Off-Road Diesel Vehicle Regulation, please visit the off-road
regulation website at http://www.arb.ca.gov/ordiesel.  For
further information on ARBís diesel vehicle and equipment
regulations, please visit the TruckStop website at

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