From: Richard Brister [rabrister@bellsouth.net] Sent: Friday, May 30, 2008 1:10 PM To: Sunda, John B. Subject: RE: Request for Modular Cooling Tower Cost Information In Support of EPA 316(b) Rule. Attachments: Cooling Flow Chart; scan0006.jpg John, please see attached drawing and cooling cost chart.
Will now try to answer some of you questions.
Let me know you received this e-mail and then we can talk.
Regards,

Richard

From: Sunda, John B. [mailto:JOHN.B.SUNDA@saic.com] Sent: Thursday, May 29, 2008 1:11 PM To: Richard Brister Subject: RE: Request for Modular Cooling Tower Cost Information In Support of EPA 316(b) Rule.
Richard, Could you please answer the following additional questions regarding modular cooling towers. I am also hoping to hear from you soon regarding modular cooling tower costs data.
1) How long does it take to install systems of varying sizes? After unit set in place, one day per unit i.e.: 10 units/10days 2) How can the towers be configured spatially to ensure minimum air recirculation? See drawing. 3) What clearance is required between side-by-side units for airflow? Picture on web looks like about 12 ft You are right 12’between units. 4) If multiple rows are used, what clearance is required between the rows for proper airflow to minimize air recirculation? 12’x 24’ 5) If you were to use the towers to replace intake water in a situation where the intake opening is blocked off, how would you control pumping rate to match condenser pump rate (i.e., prevent condenser pump wells from running dry or overflowing)? We would install a float level monitoring device in intake, add flow as needed.Thank You

John Sunda SAIC Office: 703-318-4607 Fax: 703-709-1042

-------------------------------------------------------------------------------- From: Richard Brister [mailto:rabrister@bellsouth.net] Sent: Tuesday, May 20, 2008 5:59 PM To: Sunda, John B. Subject: FW: Request for Modular Cooling Tower Cost Information In Support of EPA 316(b) Rule.
John, received e-mail.

Thanks,

Richard
From: Sunda, John B. [mailto:JOHN.B.SUNDA@saic.com] Sent: Tuesday, May 20, 2008 3:16 PM To: rabrister@bellsouth.net Subject: Request for Modular Cooling Tower Cost Information In Support of EPA 316(b) Rule.
Mr Brister,
Thank you very much for taking the time to talk to me and to offer to provide answers to my questions about modular cooling towers and associated technical issues and costs.
As I explained to you in our phone conversation today, I am a senior environmental engineer working for the company SAIC. I am working on a contract with EPA Headquarters to provide technical support in the development of the 316(b) Rule. I am currently assisting them with development of Phase II of the 316(b) rule that regulates cooling water intakes at existing power plants with design intakes of 50 mgd or greater. The EPA has asked me to investigate the applicability, technical issues, and costs associated with including modular cooling tower technology as a intake flow reduction compliance technology option to be used in estimating industry compliance costs under various regulatory scenarios. As we discussed I am interested in both short-term rentals and long-term purchase scenarios. A minimum design flow of 10,000 gpm will be fine and I would like to be able to scale the cost data up to systems of 1,000,000 gpm or greater.Being modular this should not be difficult but I would also like to be able to account for economies of scale. The 316(b) rule applies to steam power plants throughout the country so I may want to account for regional differences in shipping costs if they are a significant component.
Basically, I am interested in data that will allow me to estimate total technology costs to the facility and be able to scale them to different sized systems. Specifically, I need info regarding:
One-time costs including: Shipping Mobilization/demobilization Engineering design Equipment purchase Installation and site preparation
O&M Costs including Rental (if rented) Operating labor & materials (including equipment replacement/rebuild for long term scenarios) Energy requirements at full load (can be in MW rather than $$$)
I don’t necessarily need cost to be broken down but rather the knowledge that everything (except permitting) is included or be aware of components I may need to add costs for. I realize that costs will vary dependent on site conditions and so costs can be given in ranges. But ultimately I will need to pick a number to represent “average” national costs. We often pick costs that are somewhat on the conservative (high side) to avoid arguments that EPA underestimated compliance costs. Also I will need to know what component of the O&M is fixed (regardless of tower operation) and what varies with operation (e.g., the energy requirement should be 100% variable). As I discussed, all information you provide may become part of the public record unless you clearly identify information to be company confidential. I may submit additional questions as I investigate further.

Thank You,

John Sunda SAIC 11251 Roger Bacon Drive Reston, Va 20190 Office: 703-318-4607Fax: 703-709-1042