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msei -- REMINDER: PUBLIC WORKSHOP ON IMPROVING MOBILE SOURCE PLANNING TOOLS

Posted: 04 Jun 2013 15:45:47
This message is being sent as a reminder for the public workshop
on Improving Mobile Source Planning Tools that is being held
tomorrow at ARB; workshop slides have been posted at
http://www.arb.ca.gov/msei/msei.htm and the meeting will be
webcast at http://www.calepa.ca.gov/broadcast/.  

 The California Air Resources Board (ARB) invites you to
participate in a public workshop to discuss the development of
improved mobile source planning tools for air quality assessment
at ARB.  At the workshop, staff will present updates that are
under development for three tools: the EMFAC model, the Cal-VAD
tool for measuring mobile source VMT in California, and the
Vision Scenario tools for analyzing the impact of new vehicle
technologies and improved transportation efficiencies on
forecasted emissions in California.  ARB is developing these
tools to lay the technical foundation for air quality planning
and development of State Implementation Plans.   

The workshop will be held at the following date, time and
location:


Sacramento: (will also be webcast)

Date: 		Wednesday, June 5, 2013
Time: 		10:00 a.m. –1:00 p.m. 
Location: 	Cal/EPA Headquarters Building
		Byron Sher Auditorium
		1001 I Street
		Sacramento, CA 95814


Webcast Information

A live video/audio webcast will be available for those unable to
attend in person. The webcast can be accessed at:
http://www.calepa.ca.gov/broadcast/. Information on submitting
questions or comments will be provided during the webcast for
remote participants. The workshop materials will be posted in
advance of the workshop at http://www.arb.ca.gov/msei/msei.htm.



Workshop Information and Background

The past several decades have seen dramatic improvements in air
quality as a result of regulations that reduced emissions from
stationary and mobile sources.  However, substantial additional
emissions reductions will be necessary to meet more stringent
ozone air quality standards and California’s long-term greenhouse
gas emissions reduction goals.  Meeting these targets will
require a transition to zero and near-zero emissions
technologies.  ARB is expanding mobile source analysis tools to
support air quality planning focused on achieving this
transition.  

The EMFAC model is the primary tool that the California Air
Resources Board uses to assess emissions from cars, trucks, and
buses.  Originally developed to support low emission vehicle
regulations, EMFAC is now being used to support climate change
and  regional scale air quality planning, development of ARB
regulations focused on in-use vehicles as well as new emissions
standards, and assessment of project level emissions impacts for
transportation planning.  In this workshop updates to the EMFAC
model focused on providing improved functionalities in these
areas will be discussed.  

Two new additional tools will be discussed in the workshop:  the
California Vehicle Activity Database (Cal-VAD) and the Vision
Scenario Modeling Tool.  Cal-VAD is a new tool designed to
combine on-road vehicle count information from multiple data
sources into a new database of roadway specific vehicle miles
traveled estimates.  This tool is currently under development and
will be made publicly available when completed.  The Vision
Scenario Modeling Tool is a new tool designed for assessing how
vehicle technology penetration and transportation efficiency
policies might affect criteria and greenhouse gas emissions in
the future.  ARB customized the Vision model (originally
developed by Argonne National Laboratory) using
California-specific inputs for on-road and off-road vehicles, and
expanded the model to evaluate criteria pollutants in addition to
greenhouse gases.  

Special Accommodations 

If you require a special accommodation or need this document in
an alternate format 
(i.e. Braille, large print) or another language, please contact
Dr. Chengfeng Wang at (916) 322-1719 or cwang@arb.ca.gov as soon
as possible, but no later than 10 business days before the
scheduled workshop.  TTY/TDD/Speech to Speech users may dial 711
for the California Relay Service. 

If you did not receive this notice directly and would like to
receive notices to stay informed of future updates to mobile
source emissions inventory tools, please sign up for the “MSEI”
listserve at:  

http://www.arb.ca.gov/listserv/listserv_ind.php?listname=msei


If you have questions regarding the public workshop, please
contact Dr. Chengfeng Wang at (916) 322-1719 or
cwang@arb.ca.gov.

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