p. 1 of 3 

From: Coomes, Brandon [mailto:Brandon.Coomes@centuryaluminum.com] 

Sent: Wednesday, September 18, 2013 9:04 AM 

To: Putney, David 

Cc: Carroll, Danny 

Subject: RE: TF emissions data 

David, 

I have attached to this email our facility’s annual PMACT emissions report for 2012. I have also attached our 

2013 draft report that reflects our facility’s TF emissions to August. The TF emissions results represented in the 

attachments are the combined (primary and secondary) emissions from our Potlines. 

If you have any questions about the attachments or need anymore information please let me know. 

Best regards, 

Brandon Coomes

Environmental Engineer

 

 

9404 State Route 2096, Robards, KY 42452

 

T: +1 (270) 521-7454 M: +1 (270) 860-0057 F: +1 (270) 521-7455

brandon.coomes@centuryaluminum.com http://www.sebreeworks.com

From: Putney, David [mailto:putney.david@epa.gov] 

Sent: Monday, September 16, 2013 1:38 PM 

To: Coomes, Brandon 

Cc: Carroll, Danny 

Subject: RE: TF emissions data

Hello Brandon, 

No problem – and no apologies needed. I had seen the headlines about Century buying your facility but it just 

never “clicked” in my mind that this could very likely result in a change in contact information (not location, 

probably not phone number, but very likely email address). 

Anyway, thanks for your efforts on my behalf. I’ll look for the information later this week. 

David Putney, Environmental Engineer 

U.S. Environmental Protection Agency 

Office of Air Quality Planning and Standards 

Sector Policies and Programs Division 

109 T.W. Alexander Drive, RTP, NC 27711 

Mail Drop D243-02 

Ph: (919) 541-2016 Fax: (919) 541-3207 

Email: putney.david@epa.gov
p. 2 of 3 

From: Coomes, Brandon [mailto:Brandon.Coomes@centuryaluminum.com] 

Sent: Monday, September 16, 2013 1:47 PM 

To: Putney, David 

Cc: Carroll, Danny 

Subject: RE: TF emissions data 

Hello David, 

I apologize for not notifying you of my email address change. I totally forgot that the ICR had my old contact 

information. 

It will be no problem for me to provide you our TF emissions from out potlines. I’ll try to get this data to you by 

Wednesday. 

Best regards, 

Brandon Coomes

Environmental Engineer

 

 

9404 State Route 2096, Robards, KY 42452

 

T: +1 (270) 521-7454 M: +1 (270) 860-0057 F: +1 (270) 521-7455

brandon.coomes@centuryaluminum.com http://www.sebreeworks.com

From: Putney, David [mailto:putney.david@epa.gov] 

Sent: Monday, September 16, 2013 12:35 PM 

To: Coomes, Brandon 

Subject: FW: TF emissions data

Hey Brandon, 

Let me try this again. Also, I noticed that my previous email should have been more specific. What I am looking 

for is TF emissions (primary and secondary) from the potlines. Emissions from the carbon bake are low and 

probably not significantly impacting the risk estimates and TF emissions are not expected from the paste plant. 

Thanks, 

David Putney, Environmental Engineer 

U.S. Environmental Protection Agency 

Office of Air Quality Planning and Standards 

Sector Policies and Programs Division 

109 T.W. Alexander Drive, RTP, NC 27711 

Mail Drop D243-02 

Ph: (919) 541-2016 Fax: (919) 541-3207 

Email: putney.david@epa.gov
p. 3 of 3 

From: Putney, David 

Sent: Monday, September 16, 2013 11:18 AM 

To: 'brandon.coomes@riotinto.com' 

Subject: TF emissions data 

Hello Brandon, 

We (EPA) are finishing up our review of the emissions test results you submitted in response to the 

Information Collection Request (ICR) sent out in March of 2013. Thank you so much for the time and effort you 

dedicated to conducting those tests and submitting the results. The next step in the residual risk analysis is to 

develop the risk modeling files for your facility. It is essential that we use the best, most accurate estimates of 

your facility’s emissions in these files so as to most accurately estimate the residual risk from your facility (i.e., 

the risk remaining after application of the MACT standards). Through the 2013 ICR we have obtained recent, 

reliable data for emissions of metals and POM from the primary aluminum industry. 

However, we did not collect TF data via the 2013 ICR. Since TF affects the multipathway risk assessment, the 

ecological risk assessment, and the acute risk assessment a reduction in the estimates of emissions of that 

pollutant can have a significant impact on the estimate of residual risk associated with your facility. 

With that in mind, I am asking for some recent data on TF emissions from your facility (e.g., from NESHAP 

compliance reports). If possible, could you please send me some data (a summary table of values cited in 

NESHAP compliance reports) for a few recent, representative TF emission rates for your facility by COB this 

Friday (09/20/13)? This data would allow me to avoid using the emission rates allowed under the NESHAP to 

estimate your TF emissions (which would likely overestimate your facility’s TF emissions and the associated 

risks). 

Thanks so much, 

David Putney, Environmental Engineer 

U.S. Environmental Protection Agency 

Office of Air Quality Planning and Standards 

Sector Policies and Programs Division 

109 T.W. Alexander Drive, RTP, NC 27711 

Mail Drop D243-02 

Ph: (919) 541-2016 Fax: (919) 541-3207 

Email: putney.david@epa.gov