Copyright © 1997 Global Compliance, LLC. A LL RIGHTS RESERVED. Basics Case No: 12-008-U - Flint Creek Retrofit Date Entered: 03/27/2012 09:30:33 AM Party/Requestor: Sierra Club, Jeff Speir Date Received: 03/26/2012 Date Requested: 03/26/2012 Internal Due Date: 04/03/2012 Service Due Date: 04/11/2012 Answer Status: New Service Date: Question No: 1-039 The Weaver direct testimony at p. 36 and in Table 6 reports the installed capital cost of a 50% share of a 2020 SCR as $61 million in nominal dollars and $181/kW in 2011 dollars. These estimates reportedly do not include AFUDC but include about 28% escalation to a future build date in 2020. Please provide the following information: a. Do the costs reported for the proposed controls include costs incurred from lost generation during outages to install the equipment? If no, p lease provide an estimate of any anticipated outages and estimate the lost revenue. b. Design basis coal and flue gas composition. c. All supporting vendor quotes for all equipment. d. SCR design basis including guaranteed catalyst lifetime, SO2 to SO3 conversion rate, number of active/inactive catalyst layers, catalyst pitch. e. The backup costing spreadsheets in Excel format showing all formulae used to estimate these installed capital costs. The backup should breakout the cost in sufficient detail to disclose what is included in the estimate in all cost categories including but not limited to the following: - Ammonia injection system - Reactor box and breeching - Flue gas system - Catalyst - Sonic horns - Elevators - Mechanical balance of plant - Auxiliary power - Electrical balance of plant - Controls & instrumentation - Monitoring equipment - Civil work - Removal/relocation of existing equipment, buildings, infrastructureCopyright © 1997 Global Compliance, LLC. A LL RIGHTS RESERVED. - Escalation - Bond costs - Contingency - Freight - Taxes - Profits - Owner’s costs - Other (rentals, scaffolding, cranes) Cost estimates for each of these subcategories should identify each cost line item, the quantity of material, unit equipment costs, unit material costs, labor rates, any productivity adjustments, crew wage rates, cost bases (estimate, vendor quote, in-house database), any allowances for premium time labor, overtime inefficiency, p er diem expenses, and all other cost items. f. Please breakout all fixed and variable O&M costs for the SCR, including busbar auxiliary power, ammonia, steam, and catalyst changeout. g. The SCR lifetime. h. What accommodations will be made as part of NID and other controls to facilitate the future installation of SCR? If any, p lease break out the costs associated with these accommodations. i. Please identify any retrofit issues for the SCR if it is installed after the NID in 2016, 2020 or other future year. Answer:

a. N o. N o estimate for the value of lost generation exists at this time as plans for a p otential SCR installation have not been developed. b. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available. c. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available. d. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available. e. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available. f. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available.Copyright © 1997 Global Compliance, LLC. A LL RIGHTS RESERVED. g. Currently, an SCR is not planned for Flint Creek. As a result, the design work required to respond to this request is not available. h. While no plans are currently in place to install an SCR system at Flint Creek, future provisions including footprint allotments and ID fan sizing will be such that they reduce the complexity of a future SCR system retrofit if required at a future date as noted in the Direct Testimony of Company witness Beam on page 25. The Company is not soliciting option pricing for an SCR. i. The Company is not aware of any current retrofit issues for the SCR if installed after the NID. Advanced Date Verified: Date Accepted: Confidential: No Yes Attachments:

Voluminous: No Yes Highly Sensitive: No Yes

Comments:

Preparer(s): Kevin J Munson; Michael L Wilkinson; Twana Banks-Smith; William E Mast Witness: Christian T Beam

Modification History Created by Twana Banks-Smith Created on 03/30/2012 04:12:49 PM Modified on 04/20/2012 03:46:06 PM Edit History 6. John F Torpey 04/20/2012 03:46:22 PM 5. Henry C Steele 04/13/2012 06:48:36 PM 4. Henry C Steele 04/13/2012 06:48:31 PM