p. 1 of 1From:Bilskis, Patricia A. [mailto:Patricia.Bilskis@alcoa.com]Sent:Monday, January 06, 2014 6:57 PMTo:Putney, DavidCc:Palazzolo, Michael A.; Mitchell, Kathryn MSubject:RE: Draft emissions file for the Alcoa primary aluminumfacilitiesDavidThanks so much for the opportunity to review the emission rates that will beused in the risk modeling.There were only a few emission rates that needed tobe corrected forIntalco. I have corrected the emission rates in the spreadsheet, but I havelisted them below so that you know what to look for. The corrected valuesare in yellow highlight, within the column titled “Revised Actual Emissions(tpy)”.EmissionUnit IDEmissionUnitDescriptionProcessIDEmissionReleasePoint IDPollutantCodePollutantDescriptionActualEmissions(tpy)RevisedActualEmissions(tpy)Basis forchangeRow # inSpreadsheet03 Anode BakeFurnace01b 03 7664393 HydrogenFluoride5.8507080.89088 Intalco sourcetest data.712613Potline RoofVent 01 137664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.829013Potline RoofVent 01c 127664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.835113Potline RoofVent 01d 11a7664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.841214Potline RoofVent 01 147664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.847315Potline RoofVent 01 157664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.853416Potline RoofVent 01 167664393 HydrogenFluoride12.766666677.163Intalco sourcetest data.8595The source X and Y coordinates were spot checked and appear to be assubmitted to you in January 2011.p. 2 of 1Please feel free to contact me if you have any questions.Thanks!Patricia BilskisIntalco Aluminum Corporation4050 Mountain View RoadFerndale WA, 98248Ph. 360-201-3430From:Putney, David [mailto:putney.david@epa.gov]Sent:Wednesday, December 18, 2013 6:33 AMTo:Palazzolo, Michael A.; Bruntz, Samuel H.; Dobbs, Charles L.; Hulse, David G.; Parent, Jordan J.; Mitchell, Kathryn M; Rufa, Nathan P.;Bilskis, Patricia A.; Blodgett, Terry L.Subject:EXT: Draft emissions file for the Alcoa primary aluminumfacilitiesHello Mike et. al.,Please find attached to this message a draft emissions file (Excelspreadsheet) for the Alcoa, Inc. primary aluminum productionfacilities. Columns highlighted in yellow are available for revisionsor to indicate if records should be deleted. Please do not overwritethe data in columns that are not highlighted in yellow as this wouldcomplicate the development of the final emissions file for use in riskmodeling.The tab titled “primary al category12172” includesemissions from theprimary aluminum production operations (e.g., potlines, paste plants,pitch storage tanks, and anode bake furnaces) at the Alcoa facilities asestimated via emission factors developed from testresults obtained inresponse to the testing ICR sent out in April of 2013. I expect that thep. 3 of 1stack parameters are correct as-is since industry previously hadopportunity to review those items in CY2010 beforethe initial residualrisk and technology review (RTR) proposal for the primary aluminumproduction source category. There are, however, some emissions (e.g.,metal HAP, dioxins, PCB, etc.) that are new to theRTR analysis for theprimary aluminum production source category and, although these havebeen QA/QC’d by contractor and EPA staff, we do welcomefeedback/corrections you might have on these emissions. A revisioncolumn highlighted in yellow is provided for you torevise emissions (inunits of tons per year, tpy) if needed.The tab titled “noncategory” includes 2005 NATA NEI, 2008 NEI and 2010state HAP data for the Alcoa, Inc. primary aluminumproductionfacilities (note that we did not find any non-category emissions datafor either the Intalco facility or the Wenatchee facility). Theserecords are intended to include emissions from operations at yourfacility which are not directly associated with primary aluminumproduction (primary aluminum emissions are addressed under the firsttab, discussed above) or secondary aluminum production (secondaryaluminum emissions will be addressed via the RTR associated with thesecondary aluminum source category). Revision columns highlighted inyellow are included for emissions, pollutants, stack parameters,fugitive parameters and latitude/longitude. If anyof these parametersneeds modification, please put the corrected valuein the associatedrevision column (again, please do not overwrite thedata in columns thatare not highlighted in yellow). Note that fields were also added toidentify if a record should be deleted, and a reviewer comment fieldwhere you can add a comment if appropriate. Pleasereview these datawith the following in mind:p. 4 of 11.Should the operation be included in the spreadsheet?a.Does the operation still exist at the facility? Ifnot, or if it exists but is not legally allowed to operate (e.g., you do nothave a valid operating permit for this operation) then the operation and associated emissions need notbe 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 double countingthoseemissions).c.If the operation does exist at the facility, would the emissions from this operation be considered partof the monitoredprimary aluminum emissions? For example, if the emissions associated with the operation in question are routedthrough the control device associated with the paste plant and would be monitored as part of the pasteplant emissionsthen the operation and associated emissions need not be included (so as to avoid double counting thoseemissions).2.If the operation should be included, are the cited emissions representative of that operation?3.If the operation should be included but the citedemissions are not representative of that operation,then please providerepresentative annual actual emissions in units oftons emitted per year (tpy).4.Verify or modify the stack parameters and locationas appropriate and necessary.If I might make a suggestion – you can use the filter function in Excelto narrow down the file to review a single facilityat a time.Mike – I do not have any information for a contactat the Lake Charlesfacility. Would you please pass this email and attachment along tosomeone at that facility that could review this information? Also, wouldyou please forward me that person’s contact information?Please provide any comments, changes, corrections,etc. to this file tome by close of business on Friday, 01/03/14. I understand that more timemight be preferable with the holidays upon us, butplease give me whatp. 5 of 1you can by 01/03/14 and remember that you will haveanother opportunityto make comments and corrections during the upcoming public notice andcomment period associated with the primary aluminumproduction RTRsupplemental proposal.If you have any questions concerning these issues,please feel free tocontact me by email or telephone.Thanks,David Putney, Environmental EngineerU.S. Environmental Protection AgencyOffice of Air Quality Planning and StandardsSector Policies and Programs Division109 T.W. Alexander Drive, RTP, NC 27711Mail Drop D243-02Ph: (919) 541-2016 Fax: (919) 541-3207Email:putney.david@epa.gov