Document ID: EPA-HQ-OAR-2009-0443-0273
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2010-07-16T04:00Z

RE: One more modeling question. and updates to Minnesota's Lead
Emissions

Sheffer, Melissa (MPCA) 

to:

Andy Chang

04/01/2010 11:45 AM

Cc:

"Neuschler, Catherine (MPCA)"

 

 

From:	"Sheffer, Melissa (MPCA)" <Melissa.Sheffer@state.mn.us>

	To:	Andy Chang/R5/USEPA/US@EPA

	Cc:	"Neuschler, Catherine (MPCA)" <Catherine.Neuschler@state.mn.us>

	

Hey Andy,

 

It’s been pretty warm this week up here as well!  We hit 76 yesterday
and will probably see that again today.  Then hopefully we’ll see
some needed rain this weekend.

 

I can answer your questions to the first piece of information that you
need.  For GRC, modeling was based on projected actual emissions. 
Re-entrainment of dust was factored into the modeling analysis by
modeling with volume sources for truck traffic-related re-entrainment of
dust.

 

Hopefully this answers your questions.  Let me know if you need
additional information.  Thanks!

 

Melissa Sheffer

Research Scientist

Risk Evaluation & Air Modeling Unit

Minnesota Pollution Control Agency (MPCA)

520 Lafayette Rd. N., Saint Paul, MN 55155

Office #: (651) 757-2718, Email:   HYPERLINK
"mailto:Melissa.Sheffer@state.mn.us"  Melissa.Sheffer@state.mn.us