p. 1 of 2

From: Coomes, Jamie [ mailto:JCoomes@centuryky.com ]
Sent: Wednesday, October 02, 2013 12:26 PM
To: Putney, David; Lane, Sean Subject: RE: TF emissions data

David attached is your request for TF emissions fro m potlines for the first semiannual period of 2013.

Thanks

Jamie

From: Putney, David [ mailto:putney.david@epa.gov ] Sent: Monday, September 16, 2013 10:28 AM
To: Lane, Sean; Coomes, Jamie Subject: RE: TF emissions data

Good point Sean, I should have been more specific.

What I am looking for is TF emissions (primary and secondary) from the potlines. Emissions from the ca rbon bake are low and probably not significantly impacti ng the risk estimates and TF emissions are not expe cted 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

From: Lane, Sean [ mailto:SLane@CenturyKY.com ]
Sent: Monday, September 16, 2013 11:05 AM
To: Putney, David; Coomes, Jamie Subject: RE: TF emissions data

For which source? CWPB1, CWPB3, Carbon Bake? We h ave no data for the Paste Plant as it was not requi red
to be tested.

Thanks

Seanp. 2 of 2

From: Putney, David [ mailto:putney.david@epa.gov ]
Sent: Monday, September 16, 2013 10:03 AM
To: Lane, Sean; Coomes, Jamie Subject: TF emissions data

Hello Sean/Jamie,

We (EPA) are finishing up our review of the emissio ns test results you submitted in response to the Information Collection Request (ICR) sent out in Ma rch of 2013. Thank you so much for the time and eff ort you dedicated to conducting those tests and submitting the results. The next step in the residual risk ana lysis 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 m ost accurately estimate the residual risk from your facility (i.e., the risk remaining after application of the MACT st andards). Through the 2013 ICR we have obtained rec ent, reliable data for emissions of metals and POM.

However, we did not collect TF data via the 2013 IC R. Since TF affects the multipathway risk assessmen t, the ecological risk assessment, and the acute risk asse ssment a reduction in the estimates of emissions of that pollutant can have a significant impact on the esti mate 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 NES HAP 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, repres entative TF emission rates for your facility by COB this Friday (09/20/13)? This data would allow me to avoi d using the emission rates allowed under the NESHAP to estimate your TF emissions (which would likely over estimate your facility’s TF emissions and the assoc iated 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