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Comment 33 for Truck and Bus and In-Use Off-Road Regulation Updates (dec09update) - Non-Reg.

First NameRobert
Last NameHarley
Email Addressharley@ce.berkeley.edu
AffiliationUC Berkeley
Subjecton-road diesel engine emissions
Comment
On-road diesel engines are a major source of air pollution in
California, one of the largest sources of both nitrogen oxides and
black carbon (aka soot) which comprises a majority of diesel
exhaust particulate matter mass emissions.

The effects of ARB's truck and bus rule on diesel exhaust
particulate matter are dramatic by 2014, the rule will greatly
accelerate reductions in diesel  truck particulate matter emissions
that would otherwise take decades to achieve.

Attachment
Original File Name
Date and Time Comment Was Submitted 2009-12-07 15:25:08

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