From: Forney, Katy

Sent: Tuesday, January 21, 2014 1:48 PM

To: Cobb, Phil

Cc: Ceron, Heather; Purvis, James; Buff, Dave

Subject: RE: NHPC Boiler D project costs

ok thanks. 

From: Cobb, Phil [mailto:Phil_Cobb@golder.com] 

Sent: Tuesday, January 21, 2014 11:55 AM

To: Forney, Katy

Cc: Ceron, Heather; Purvis, James; Buff, Dave

Subject: RE: NHPC Boiler D project costs

Katy, the air preheater is integral to the boiler, so it will not be an additional emission unit. Boiler D will 

still only have one exhaust stream. The preheater just increases the efficiency of the boiler so that it will 

meet the required 85% efficiency.

Thanks, Phil

Philip Cobb, Ph.D., P.E. <>< Senior Project Engineer ><> Golder Associates Inc. 

6026 NW 1st Place, Gainesville, Florida, USA 32607 

T: (352) 336-5600 | F: (352) 336-6603 | C: (352) 682-8946 | E: pcobb@golder.com | 

www.golder.com 

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From: Forney, Katy [mailto:Forney.Kathleen@epa.gov] 

Sent: Tuesday, January 21, 2014 10:56 AM

To: Cobb, Phil

Cc: Ceron, Heather; Purvis, James; Buff, Dave

Subject: RE: NHPC Boiler D project costs

Hey Phil,

We will update our analysis for the $14 million. Also, I would like to confirm that the “additional air 

preheater” is an integral part of the Boiler D emission unit and that the emissions from the air preheater 

is routed to the exhaust stream from the boiler. If this is NOT the case and the air preheater is a 

separate emissions unit, we need to talk today, since the application has not indicated there are any 

other emission units beyond Boiler D. 
Thanks,

Katy

From: Cobb, Phil [mailto:Phil_Cobb@golder.com] 

Sent: Monday, January 20, 2014 9:33 AM

To: Purvis, James; Buff, Dave

Cc: Forney, Katy; Ceron, Heather

Subject: RE: NHPC Boiler D project costs

James, I don’t know if this information is too late, or if it will make a difference to your analysis, but I just 

received updated information from the site.

The total estimated capital cost for Boiler D is $14 million. The additional cost came in because the 

boiler manufacturer added an additional air preheater in order to meet the guaranteed 85% boiler 

efficiency.

Thanks, Phil

Philip Cobb, Ph.D., P.E. <>< Senior Project Engineer ><> Golder Associates Inc. 

6026 NW 1st Place, Gainesville, Florida, USA 32607 

T: (352) 336-5600 | F: (352) 336-6603 | C: (352) 682-8946 | E: pcobb@golder.com | 

www.golder.com 

Work Safe, Home Safe

This email transmission is confidential and may contain proprietary information for the exclusive use of the intended recipient. Any use, 

distribution or copying of this transmission, other than by the intended recipient, is strictly prohibited. If you are not the intended recipient, 

please notify the sender and delete all copies. Electronic media is susceptible to unauthorized modification, deterioration, and incompatibility. 

Accordingly, the electronic media version of any work product may not be relied upon. 

Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation. 

Please consider the environment before printing this email. 

From: Purvis, James [mailto:Purvis.James@epa.gov] 

Sent: Friday, January 17, 2014 2:04 PM

To: Cobb, Phil; Buff, Dave

Cc: Forney, Katy; Ceron, Heather

Subject: RE: NHPC Boiler D project costs

Phil,

Thank you! It looks like we are still on schedule for public notice in “The Sun”, Thursday next week. 

Please let us know if you have any questions. Feel free to call me at the number below, if there is a

need. Have a great weekend!

Regards,
James Purvis

(404) 562 9139

US EPA Region 4

Air, Pesticides, and Toxics Management Division

Air Permits Section 

From: Cobb, Phil [mailto:Phil_Cobb@golder.com] 

Sent: Wednesday, January 15, 2014 4:49 PM

To: Buff, Dave; Purvis, James

Cc: Forney, Katy; Ceron, Heather

Subject: RE: NHPC Boiler D project costs

James, the capital costs for the Boiler D project will be at least 12 million. This cost does not include 

some of the ancillary systems (wastewater treatment costs, etc), but is a good estimate. Please let us 

know if you need any additional information.

Thanks, Phil 

Philip Cobb, Ph.D., P.E. <>< Senior Project Engineer ><> Golder Associates Inc. 

6026 NW 1st Place, Gainesville, Florida, USA 32607 

T: (352) 336-5600 | F: (352) 336-6603 | C: (352) 682-8946 | E: pcobb@golder.com | 

www.golder.com 

Work Safe, Home Safe

This email transmission is confidential and may contain proprietary information for the exclusive use of the intended recipient. Any use, 

distribution or copying of this transmission, other than by the intended recipient, is strictly prohibited. If you are not the intended recipient, 

please notify the sender and delete all copies. Electronic media is susceptible to unauthorized modification, deterioration, and incompatibility. 

Accordingly, the electronic media version of any work product may not be relied upon. 

Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation. 

Please consider the environment before printing this email. 

From: Buff, Dave 

Sent: Wednesday, January 15, 2014 9:38 AM

To: Purvis, James

Cc: Cobb, Phil; Forney, Katy; Ceron, Heather

Subject: RE: NHPC Boiler D project costs

James, no problem we should be able to get something for you today.
David A. Buff, P.E., Q.E.P. | Principal Engineer | Golder Associates Inc.

6026 NW 1st Place, Gainesville, Florida, USA 32607 

Tel: +1 (352) 336-5600 ext. 21145 Fax: +1 (352) 336-6603 | Cell: +1 352 514-5600 | 

E: dbuff@golder.com | www.golder.com 

Work Safe, Home Safe

This email transmission is confidential and may contain proprietary information for the exclusive use of the intended recipient. Any use, 

distribution or copying of this transmission, other than by the intended recipient, is strictly prohibited. If you are not the intended recipient, 

please notify the sender and delete all copies. Electronic media is susceptible to unauthorized modification, deterioration, and incompatibility. 

Accordingly, the electronic media version of any work product may not be relied upon. 

Please consider the environment before printing this email. 

From: Purvis, James [mailto:Purvis.James@epa.gov] 

Sent: Wednesday, January 15, 2014 9:23 AM

To: Buff, Dave

Cc: Cobb, Phil; Forney, Katy; Ceron, Heather

Subject: NHPC Boiler D project costs

Dave,

As a follow up to my voicemail yesterday afternoon, I wanted to send an email because we have a lastminute, urgent request for a piece of information we’ll need for EPA’s BACT justification:

What is the estimated total capital cost for the Boiler D project? 

If we could get this as soon as possible, we may be able to make our planned public notice date of Jan 

23.

Thank you and we apologize for the late/rush request.

Regards,

James Purvis

(404) 562 9139

US EPA Region 4

Air, Pesticides, and Toxics Management Division

Air Permits Section