Keith Barnett/RTP/USEPA/US 
10/10/2007 03:17 PM	To
bob.vantuyl@ashgrove.com, fran.streitman@ashgrove.com
cc
"Michael Laney" <mnl@rti.org>, colejd@rti.org
bcc

Subject
Fw: Mercury Test Information
	
		
		Dear Bob and Fran:
		
		We are currently looking at mercury speciation data and had some questions 
about one of the tests you sent (attached).  Please reply to "Cole, 
Jeffrey D." <colejd@rti.org> .  
		
		
		
		Keith W. Barnett
USEPA/OAQPS/SPPD/MMG
Mail Code D243-02
Research Triangle Park, NC  27711
919-541-5605
barnett.keith@epa.gov
		----- Forwarded by Keith Barnett/RTP/USEPA/US on 10/10/2007 03:11 PM -----
		"Cole, Jeffrey D." <colejd@rti.org> 
10/10/2007 02:45 PM	
To
Keith Barnett/RTP/USEPA/US@EPA
cc
"Laney, Michael N." <mnl@rti.org>
Subject
RE: Mercury Test Information
	

	


Keith,

Here are the comments on Ash Grove:

1. Are these data concentrations presented at 7% O2 or 10% O2?

2. In Table 6, should OH-4's data need to be clarified?

3. In Table 6, should 324-1's particulate bound concentration be 11.1 
µg/dscm instead of the listed 1,011.1 µg/dscm?

4. In some cases in Table 6 (e.g., 324-5) it appears that the data has 
been rounded before totaled. Please present the data in the tables without 
rounding so that we can see the original form of the data.

5. In Table 9, should OH-1's elemental concentration be 457.0 µg/dscm 
instead of the listed ".457." µg/dscm?

6. In Table 9, OH-2 and OH-3's oxidized and total concentrations are 
unclear because of multiple decimal points, please clarify.

Jeffrey Cole
Research Environmental Science Engineer
RTI International
Environment, Health and Safety Division
Environmental Engineering Group
P.O. Box 12194, RTP, NC 27709-2194 (USPS)
(919) 316-3408 (voice)    (919) 316-3420 (fax)

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