RE: Fuel consumption data for nonpoint sources

["Wu, Chun Yi" <Chun.Yi.Wu@state.mn.us>]

My question on fuel consumption data (see the June 22 e-mail) is
resolved.  I checked the following link at EIA.  Fuel consumption data
for farm and off-highway is listed seperately.   

http://tonto.eia.doe.gov/dnav/pet/pet_cons_821dst_dcu_nus_a.htm

You can get your state data from there too.

The distillate fuel oil consumption data used in MN 2002 EI for
industrial sector is about 4 time of the value should be.  There is also
a small difference for commercial and residential sectors.

Please check your data to make sure the values are right.

The EPA's 2002 NEI fuel consumption data was not right.  EPA used a
national throughput of 7,337,378.75 thousands of gallons for industrial
sector after adjusted for point source fuel consumption (Page A-67 of
The DOCUMENTATION FOR THE FINAL 2002 NONPOINT SECTOR (FEB 06 version)
NATIONAL EMISSION INVENTORY FOR CRITERIA AND HAZARDOUS AIR POLLUTANTS,
July 2006).  The total national throughput for industrial sector before
adjusted for point source fuel consumption should be 2,384,383 thousands
of gallons.  EPA overastimeted emissions for FOSSIL FUEL COMBUSTION
category in 2002 NEI.


Chun Yi

-----Original Message-----
From: Wu, Chun Yi 
Sent: Friday, June 22, 2007 10:34 AM
To: 'Ryan.Ron@epamail.epa.gov'; Mark Janssen (janssen@ladco.org);
Solomon A. Douglas
Cc: Airtoxics; 'Grant.Hetherington@wisconsin.gov';
'dalebout@michigan.gov'
Subject: Fuel consumption data for nonpoint sources

The DOCUMENTATION FOR THE FINAL 2002 NONPOINT SECTOR (FEB 06 version)
NATIONAL EMISSION INVENTORY FOR CRITERIA AND HAZARDOUS AIR POLLUTANTS,
July 2006
(ftp://ftp.epa.gov/EmisInventory/2002finalnei/documentation/nonpoint/200
2nei_final_nonpoint_documentation0206version.pdf ) indicated the use of
statistics from the Energy Information Administration (EIA) for fuel
consumption data for nonpoint sources for residential,
commercial/institutional, and industrial combustion.

The EIA statistics separates the consumption to 5 sectors: residential,
Commercial/institutional, industrial, transportation, and electrical
power generation.  The nonroad sources could be in the first 3 sectors.
In EPA's documentation, fuel consumption for point sources was
subtracted from total to obtain fuel consumption for nonpoint sources.
However, ther is no consideration for nonroad mobile sources.  I think
we should discuss this issue in the EI community.
 

Chun Yi Wu, Ph.D., P.E. 
Environmental Analysis & Outcomes Division 
Minnesota Pollution Control Agency 
520 Lafayette Road N. 
St. Paul, 55155-4194 
Phone: (651)282-5855 
Fax: (651)297-7709 
E-mail: chun.yi.wu@state.mn.us 



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