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  |"Zwicke, Greg - Portland, OR" <greg.zwicke@por.usda.gov>                                                                                  
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  |Melanie King/RTP/USEPA/US@EPA                                                                                                             
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  |"Johnson, Greg - Portland, OR" <Greg.Johnson@por.usda.gov>                                                                                
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  |04/07/2010 12:20 PM                                                                                                                       
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  |RE: moving on to spark ignition engines                                                                                                   
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Melanie,

Here is the spreadsheet I put together based on the information I received 
from USDA-NASS, who are the compilers of the Census of Agriculture and the 
associated Farm & Ranch Irrigation Survey.  Take a look at it, and I expect we 
may want to set up a time to talk about the methodology.  I'll be tied up here 
today until about 3:00 pm your time.
Tomorrow may be better, but I know I already have 2 conference calls (9:30-
10:30 am and 2:00-3:00 pm your time).

Greg

************************************************************
Greg Zwicke, P.E.
Air Quality Engineer
Air Quality and Atmospheric Change Team
USDA-NRCS
West National Technology Support Center
1201 NE Lloyd Blvd., Suite 1000
Portland, OR  97232

Phone:  (503) 273-2434
Fax:  (503) 273-2401
E-mail:  greg.zwicke@por.usda.gov
************************************************************


-----Original Message-----
From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Tuesday, March 30, 2010 5:54 AM
To: Zwicke, Greg - Portland, OR
Subject: RE: moving on to spark ignition engines

No problem Greg, thanks.

Melanie King
Energy Strategies Group
Sector Policies and Programs Division
Office of Air Quality Planning and Standards U.S. Environmental Protection 
Agency

Mail Code D243-01
RTP, NC  27711

Phone:  (919) 541-2469
Fax:       (919) 541-5450
king.melanie@epa.gov


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  |03/30/2010 01:45 AM
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  |RE: moving on to spark ignition engines
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Melanie,

I did finally get a little bit of data from the National Agricultural 
Statistics Service on irrigation pumps that I think may be useful for helping 
us better estimate the inventory of agricultural engines.  It's not perfect, 
but I think it gets us much closer.  The problem is that I am currently 
swamped with other EPA rule reviews.  I'm hoping to get to take a closer look 
at the data I got from NASS by the end of the week, so would it be OK to get 
back with you then on what I find out?  I know you were shooting for the end 
of March, but I know I'm going to be pretty tied up for the next few days.

Greg

************************************************************
Greg Zwicke, P.E.
Air Quality Engineer
Air Quality and Atmospheric Change Team
USDA-NRCS
West National Technology Support Center
1201 NE Lloyd Blvd., Suite 1000
Portland, OR  97232

Phone:  (503) 273-2434
Fax:  (503) 273-2401
E-mail:  greg.zwicke@por.usda.gov
************************************************************


-----Original Message-----
From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Friday, February 26, 2010 7:54 AM
To: Zwicke, Greg - Portland, OR
Subject: moving on to spark ignition engines


Hi Greg,
Now that the diesel engine rule has been signed, we are turning our attention 
to the rule for existing spark ignition engines that must be signed by August 
10.  I would like to avoid some of the issues we had during the interagency 
review process on the diesel rule regarding the split between major and area 
sources for irrigation engines, so if you have information on how many spark 
ignition irrigation sets are located at major sources of HAP versus area 
sources, now is the time to speak up.  Please let me know if you have any 
information that you would like to share.

Thanks!

Melanie King
Energy Strategies Group
Sector Policies and Programs Division
Office of Air Quality Planning and Standards U.S. Environmental Protection 
Agency

Mail Code D243-01
RTP, NC  27711

Phone:  (919) 541-2469
Fax:       (919) 541-5450
king.melanie@epa.gov




(See attached file: NASS Engine Data Analysis for RICE Rule.xls)