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From: Bruntz, Samuel H. [ mailto:Samuel.Bruntz@alcoa.com ]
Sent: Thursday, January 02, 2014 6:03 PM
To: Putney, David
Cc: Palazzolo, Michael A. Subject: RE: Draft emissions file for the Alcoa primary alu minum facilities

David,

You will find attached the Alcoa Warrick revised em issions file. No changes were made to the non-category emis sion sources. The primary aluminum category file was ame nded by adding two potrooms which did not appear in your dr aft. In addition, potlines 3 and 4 exhaust through a common stack. The stack parameters reflected the airflow for 2 po tlines, but emissions from only 1 potline. I thus doubled t he emissions for the source Id 162 stack, amended its description to potlines 3 and 4, and deleted source ID 163.

Let me know if you have any questions.

Thanks,

Sam Bruntz Sr. Staff Environmental Engineer Alcoa Inc. – Warrick Operations (812) 853-1519

From: Putney, David [ mailto:putney.david@epa.gov ]
Sent: Wednesday, December 18, 2013 8:33 AM
To: Palazzolo, Michael A.; Bruntz, Samuel H.; Dobbs, C harles L.; Hulse, David G.; Parent, Jordan J.; Mitchell, Kathryn M; Rufa, Nathan P.; Bilskis, Patr icia A.; Blodgett, Terry L. Subject: EXT: Draft emissions file for the Alcoa primary al uminum facilities

Hello Mike et. al.,

Please find attached to this message a draft emissi ons file (Excel spreadsheet) for the Alcoa, Inc. primar y aluminum production facilities. Columns highlighte d in yellow are available for revisions or to indicat e if records should be deleted. Please do not overwr ite the data in columns that are not highlighted in yel low as this would complicate the development of the fin al emissions file for use in risk modeling.p. 2 of 4

The tab titled “primary al category12172” includes emissions from the primary aluminum production operations (e.g., potlines, paste plants, pitch storage tanks, and anode bake furnaces) at the Alco a facilities as estimated via emission factors develo ped from test results obtained in response to the testi ng ICR sent out in April of 2013. I expect that the st ack parameters are correct as-is since industry previou sly had opportunity to review those items in CY2010 bef ore the initial residual risk and technology review (RT R) proposal for the primary aluminum production source category. There are, however, some emissions (e.g., metal HAP, dioxins, PCB, etc.) that are new to the RTR analysis for the primary aluminum production source category and, although these have been QA/QC’d by
contractor and EPA staff, we do welcome feedback/corrections you might have on these emissions. A revision column highlighted in yellow is provided for you to revise emissions (in units of t ons per year, tpy) if needed.

The tab titled “noncategory” includes 2005 NATA NEI, 2008 NEI and 2010 state HAP data for the Alcoa
, Inc. primary aluminum production facilities (note t hat we did not find any non-category emissions data for either the Intalco facility or the Wenatchee facility). These records are intended to include emissions from operations at your facility which ar e not directly associated with primary aluminum production (primary aluminum emissions are addresse d under the first tab, discussed above) or secondary aluminum production (secondary aluminum emissions w ill
be addressed via the RTR associated with the second ary aluminum source category). Revision columns highlighted in yellow are included for emissions, pollutants, stack parameters, fugitive parameters and latitude/longitude. If any of these parameters needs modification, please put the
corrected value in the associated revision columnp. 3 of 4

(again, please do not overwrite the data in columns that are not highlighted in yellow). Note that fie lds were also added to identify if a record should be deleted, and a reviewer comment field where you can add a comment if appropriate. Please review these d ata with the following in mind:

1. Should the operation be included in the spreadsheet ?

a. Does the operation still exist at the facility? If not, or if it exists but is not legally allowed to operate (e.g., you do not have a valid o perating permit for this operation) then the operation and associated emissions need no t be included.

b. If the operation does exist at the facility, is it part of any secondary aluminum operations that may exist at your facility? If so, then the operation and associated emissions need not be included (so as to avoid doub le counting those emissions).

c. If the operation does exist at the facility, would the emissions from this operation be considered part of the monitored primary aluminum e missions? For example, if the emissions associated with the operation in question are routed through the control device associated with the paste plant and would be monitored as part of the paste plant emissions then the operation and associated e missions need not be included (so as to avoid double counting those emissions).

2. If the operation should be included, are the cited emissions representative of that operation?

3. If the operation should be included but the cited emissions are not representative of that operation, then please provide representative annua l actual emissions in units of tons emitted per year (tpy).

4. Verify or modify the stack parameters and location as appropriate and necessary.

If I might make a suggestion – you can use the filt er function in Excel to narrow down the file to review a single facility at a time.

Mike – I do not have any information for a contact at the Lake Charles facility. Would you please pass th is email and attachment along to someone at that facil ity that could review this information? Also, would you please forward me that person’s contact information ?p. 4 of 4

Please provide any comments, changes, corrections, etc. to this file to me by close of business on Friday, 01/03/14. I understand that more time might be preferable with the holidays upon us, but please gi ve me what you can by 01/03/14 and remember that you w ill have another opportunity to make comments and corrections during the upcoming public notice and comment period associated with the primary aluminum production RTR supplemental proposal.

If you have any questions concerning these issues, please feel free to contact me by email or telephon e.

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