----- Forwarded by Melanie King/RTP/USEPA/US on 10/15/2009 01:31 PM

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|"Coss, Pablo M (DEC)" <moses.coss@alaska.gov>

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|Melanie King/RTP/USEPA/US@EPA

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|"Dalcher, Debra S (DEC)" <debra.dalcher@alaska.gov>, "Kerin, Elizabeth J

(DEC)" <elizabeth.kerin@alaska.gov>, "Baumgartner, James R (DEC)"|

|<jim.baumgartner@alaska.gov>

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|10/08/2009 12:32 PM

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|FW: Alaska Rural Utility NSPS Engine Comments

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Melanie,

attached are answers to you recent questions based on all we know about those

engines. Let me know if there is anything else we can help you with.

best regards,

Moses Coss

Title V Fairbanks Supervisor

907-451-2163

-----Original Message-----

From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Tuesday, October 06, 2009 7:38 AM

To: Dalcher, Debra S (DEC)

Cc: Kerin, Elizabeth J (DEC); Plosay, James R (DEC); Coss, Pablo M (DEC)

Subject: Re: Alaska Rural Utility NSPS Engine Comments

Also I had one more question, do any of these engines have emission controls

like SCR, oxidation catalyst, etc?

Melanie King

Energy Strategies Group
Sector Policies and Programs Division

Office of Air Quality Planning and Standards U.S. Environmental Protection

Agency

Mail Code D243-01

RTP, NC 27711

Phone: (919) 541-2469

Fax: (919) 541-5450

king.melanie@epa.gov

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|"Dalcher, Debra S (DEC)" <debra.dalcher@alaska.gov>

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|"Coss, Pablo M (DEC)" <moses.coss@alaska.gov>, "Kerin, Elizabeth J

(DEC)" <elizabeth.kerin@alaska.gov> |

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|"Dalcher, Debra S (DEC)" <debra.dalcher@alaska.gov>, Melanie

King/RTP/USEPA/US@EPA, "Plosay, James R (DEC)" <jim.plosay@alaska.gov>

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|10/06/2009 11:17 AM

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|Alaska Rural Utility NSPS Engine Comments

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Moses, Liz

Please provide Melanie with a response to her below questions as soon as

possible.

Please copy me on your response.

Thank you very much,

Debra

-----Original Message-----

From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Tuesday, October 06, 2009 5:15 AM

To: Plosay, James R (DEC)

Cc: Edwards, Alice L S (DEC); Dalcher, Debra S (DEC); Baumgartner, James R

(DEC); Kuterbach, John F (DEC)

Subject: Re: Alaska rural utility NSPS engine comments

Hi,

Thanks so much for sending the data, I really appreciate it. A couple of

questions - what is the difference between the two spreadsheets? For example,

are the Red Dog Mine engines in the "Rural Alaska NSPS engine"

file the same engines as the Red Dog Mine engines in the "IC_Engine Source

Tests" file? If so, why are the emissions so different? In the "Rural Alaska

NSPS engine" sheet, why are the PM test results the same for multiple engines

at the same facility? Were they tested and all the engines had the same

emissions? Finally, can you tell me what test method was used for the PM

tests?

Melanie King

Energy Strategies Group

Sector Policies and Programs Division

Office of Air Quality Planning and Standards U.S. Environmental Protection

Agency

Mail Code D243-01

RTP, NC 27711

Phone: (919) 541-2469

Fax: (919) 541-5450

king.melanie@epa.gov
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|"Plosay, James R (DEC)" <jim.plosay@alaska.gov>

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|Melanie King/RTP/USEPA/US@EPA

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|"Edwards, Alice L S (DEC)" <alice.edwards@alaska.gov>, "Kuterbach, John F

(DEC)" <john.kuterbach@alaska.gov>, "Baumgartner, James R (DEC)"|

|<jim.baumgartner@alaska.gov>, "Dalcher, Debra S (DEC)"

<debra.dalcher@alaska.gov>

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|10/05/2009 12:09 PM

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|Alaska rural utility NSPS engine comments

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<<Rural Alaska NSPS engine.xlsx>> <<IC_ENGINE SOURCE TESTS.xlsx>>

Melanie –

Attached is the data requested by EPA and processed thru ADEDC’s database. I

hope this meets the requirement of your information request. Please let me

know if there is anything else I can provide for you.

Jim Plosay

Inspector, Title V Air Permits

Title V Permit Renewal Team Leader

State of Alaska DEC AQ/APP

907-465-5561 ph

907-465-5129 fx

Jim.Plosay@alaska.gov

(See attached file: Rural Alaska NSPS engine.xlsx)(See attached file:

IC_ENGINE SOURCE TESTS.xlsx)

[attachment "Rural Alaska NSPS engine.xlsx" deleted by Melanie

King/RTP/USEPA/US] [attachment "IC_ENGINE SOURCE TESTS.xlsx" deleted by

Melanie King/RTP/USEPA/US](See attached file: Questions regarding rural Alaska

NSPS engines.docx)