"Laney, Michael N." <mnl@rti.org> 
03/04/2008 06:01 PM	To
	<fran.streitman@ashgrove.com>
	cc
	Keith Barnett/RTP/USEPA/US@EPA
	bcc
	
	Subject
	Section 114 Data IN DOCKET
	
	
	History:	
		This message has been forwarded.

Dear Mr. Streitman:
 
As you may remember, I am working with Keith Barnett of the EPA on the 
revisions to the Portland cement NESHAP. Specifically, I have been 
compiling the data submitted by your company on the mercury and total 
organic content of the raw materials and fuel used in the production of 
cement. Attached is the data we compiled for the Ash Grove facilities and 
our estimate for each kiln of mercury emissions as well as total organic 
content of the raw materials fed to the kiln. Also attached is a brief 
overview of the approach used to estimate mercury emissions as well as the 
total amount of raw material TOC entering the kiln. 
 
Given the large amount of data that had to be entered into the database 
and the complexity of some of the concentration and usage data, there are 
opportunities for errors. We have checked the data f as well as the 
calculations or mistakes. Invariably it is likely that we have made some 
data entry mistakes or we may have incorrectly interpreted data that were 
submitted. We would appreciate your review of the data and calculations 
and your feedback with any problems you find.
 
If you have any questions, feel free to contact me. Thanks again for your 
assistance.
 
Mike
 
Michael Laney
Environmental Engineering
Environmental Health & Safety Division
RTI International
TEL:  919-316-3413
FAX:  919-316-3420
EMAIL:  mnl@rti.org
 