Rich Mason/RTP/USEPA/US 

10/23/2007 11:34 AM

	

To

Janet Cakir/RTP/USEPA/US@EPA, Ron Evans/RTP/USEPA/US@EPA

cc

David Misenheimer/RTP/USEPA/US@EPA

Subject

RIA workshop Emissions Modeling questions resolved









Hi Janet, Ron and David,

I've closed the loop on 2 questions from Indur Goklany (DOI):

Q 1: Does the US onroad inventory account for fleet characteristics in
border states/coutnies including Mexico vehicles?

A1:  I forwarded this to Indur  on 10/18:  According to Dave Brzezinski,

MOBILE6 does not know if we are modeling a county in Texas or in Maine.

Since we do not adjust the emission rates assumed for Texas, all of the

VMT in Texas counties is assumed to have been driven by U.S. certified

vehicles.

Q2:  What is the source of the BELD3 land use data used as input for the
biogenics modeling?

A2:  Chris Geron from ORD provided a draft paper including figures and
tables on this.  I forwarded this on 10/23.

_____________________________________________

Rich Mason

Physical Scientist

Emission Inventory Analysis Group

U.S. Environmental Protection Agency

Mail Drop C339-02,109 TW Alexander Dr., RTP,NC 27711

(919) 541-3405 ( fax: -0684)

