### Fw: Need to change stack parameters
Michael Feldman to: Erik Snyder 08/28/2012 08:31 AM
Cc: Dayana Medina, Joe Kordzi, Guy Donaldson

From: Michael Feldman/R6/USEPA/US

To: Erik Snyder/R6/USEPA/US@EPA

Cc: Dayana Medina/R6/USEPA/US@EPA, Joe Kordzi/R6/USEPA/US@EPA, Guy Donaldson/R6/USEPA/US@EPA

Domtar would like to change the baseline and stack parameters for Boiler #1 (SN-03). These changes are to reflect the installation of a wet ESP on boiler 1 in 2007 to meet the Boiler MACT (0.07 lb/MMBtu). We approved this limit to be PM BART for this unit.

Michael Feldman Environmental Engineer Air Planning Section U.S. EPA Region 6, 6PD-L Phone: 214-665-9793 feldman.michael@epa.gov ----- Forwarded by Michael Feldman/R6/USEPA/US on 08/28/2012 08:22 AM -----

From: "Pettyjohn, Mary" <PETTYJOHN@adeq.state.ar.us> To: "Rheaume, Thomas" <RHEAUME@adeq.state.ar.us>, "Brown, Derrick" <brownd@adeq.state.ar.us>, Michael Feldman/R6/USEPA/US@EPA Date: 08/28/2012 06:44 AM Subject: FW: Need to change stack parameters



### Good morning,

Below is Trinity’s reply to my request on the name of the facility, errors found in the parameters, and
corrected parameters prior to submission of the 5

‐ factor so we can do some checking here.

Please let me know your thoughts as soon as possible so Trinity can finish the five

‐ factor.

Thanks, Mary

From: Jeremy Jewell [mailto:JJewell@trinityconsultants.com]
Sent: Monday, A u g ust 27, 2012 6:39 PM
To: Pettyjohn, Mary
Cc: Molly Goldstein; Kara Gerlach Subject: Fw: Need to change stack parameters

Mary,

The facility that needs to update stack parameters is Domtar. They have two boilers subject to BART: No. 1 Power Boiler (SN-03) and No. 2 Power Boiler (SN-05). The parameters for SN-05 need to change very little - j ust some slight updates probably due to rounding differences - to make it consistent with recently submitted AERMOD modeling (done for permitting purposes). For SN-03, the parameters need to change to reflect the wet ESP that was installed in 2007. SN-03 now emits through two stacks withlower velocities and temperatures than prior to the wet ESP installation. Note that recent AERMOD submittals also reflect these changes. A comparison of the old parameters values to the new parameter values is presented in Kara's email below.

This also brings up the issue of changing baseline emission rates. The wet ESP obviously changed the emissions profile. My opinion is that this should be reflected in updated baseline modeling. So now both Entergy and Domtar are awaiting ADEQ's/EPA's thoughts on that issue.

Thanks,

________________________________________________________ Jeremy W. Jewell | Manager of Consulting Services, Oklahoma

OKC: 120 E. Sheridan, Suite 205, Oklahoma City, OK 73104 | 405-228-3292

Tulsa: 1831 E. 71st Street, Suite 118, Tulsa, OK 74136 | 918-877-2742

e-mail: j jewell @ trinityconsultants

. com | e-fax: 918-512-7084

----- Forwarded by Jeremy Jewell/Trinity Consultants on 08/27/2012 04:00 PM -----

From: Kara Gerlach/Trinity Consultants

To: Jeremy Jewell/Trinity Consultants@TCI

_ Dallas

Date: 08/27/2012 03:57 PM

Subject: Re: Fw: Need to change stack parameters

Domtar Stack Parameters from New Calpuff Modeling

SN-03A Stack Height (m) 66.14
Base Elev. (m) 99.58
Stack Diam. (m) 2.1 Exit Velocity (m/s) 11.06 Exit Temp (K) 342.04

SN-03B Stack Height (m) 66.14
Base Elev. (m) 99.51
Stack Diam. (m) 2.1 Exit Velocity (m/s) 11.07 Exit Temp (K) 342.04

SN-05 Stack Height (m) 71.63
Base Elev. (m) 99.95Stack Diam. (m) 3.66 Exit Velocity (m/s) 11.92 Exit Temp (K) 324.82

Domtar Stack Parameters from Old Calpuff Modeling
SN-03 Stack Height (m) 66.1
Base Elev. (m) 97.5
Stack Diam. (m) 1.89 Exit Velocity (m/s) 26.76 Exit Temp (K) 522.0

SN-05 Stack Height (m) 71.66
Base Elev. (m) 97.5
Stack Diam. (m) 3.659 Exit Velocity (m/s) 11.92 Exit Temp (K) 325.0

From: Jeremy Jewell/Trinity Consultants

To: Kara Gerlach/Trinity Consultants@TCI

_ Dallas

Date: 08/27/2012 03:16 PM

Subject: Fw: Need to change stack parameters

Kara,

Can you send me a list of the Domtar parameters...comparing the old modeling and the new modeling?
Leave off the coordinates and emission rates.

________________________________________________________ Jeremy W. Jewell | Manager of Consulting Services, Oklahoma

OKC: 120 E. Sheridan, Suite 205, Oklahoma City, OK 73104 | 405-228-3292

Tulsa: 1831 E. 71st Street, Suite 118, Tulsa, OK 74136 | 918-877-2742

e-mail: j jewell @ trinityconsultants

. com | e-fax: 918-512-7084

----- Forwarded by Jeremy Jewell/Trinity Consultants on 08/27/2012 03:16 PM -----

From: "Pettyjohn, Mary" < PETTYJOHN @ adeq

. state

. ar

. us >

To: Jeremy Jewell < JJewell @ trinityconsultants

. com >

Date: 08/27/2012 01:46 PM RE: Need to change stack parametersSubject:

Hi Jeremy,

I would appreciate the name of the facility, errors found in the parameters, and corrected parameters prior to

submission of the 5

‐ factor so we can do some checking here.

Thanks,
Mary

From: Jeremy Jewell [ mailto : JJewell @ trinityconsultants

. com ]
Sent: Friday, A u g ust 24, 2012 1:01 PM
To: Pettyjohn, Mary Subject: Need to change stack parameters

Mary,

Is it going to cause much heartburn if we change stack parameters (temp., velocity, diameter) compared to the previous (from '07) modeling?

________________________________________________________ Jeremy W. Jewell | Manager of Consulting Services, Oklahoma

OKC: 120 E. Sheridan, Suite 205, Oklahoma City, OK 73104 | 405-228-3292

Tulsa: 1831 E. 71st Street, Suite 118, Tulsa, OK 74136 | 918-877-2742

e-mail: j jewell @ trinityconsultants

. com | e-fax: 918-512-7084

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