[Code of Federal Regulations] [Title 10, Volume 3] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR436.24] [Page 428] TITLE 10--ENERGY CHAPTER II--DEPARTMENT OF ENERGY PART 436_FEDERAL ENERGY MANAGEMENT AND PLANNING PROGRAMS--Table of Contents Subpart A_Methodology and Procedures for Life Cycle Cost Analyses Sec. 436.24 Uncertainty analyses. If particular items of cost data or timing of cash flows are uncertain and are not fixed under Sec. 436.14, Federal agencies may examine the impact of uncertainty on the calculation of life cycle cost effectiveness or the assignment of rank order by conducting additional analyses using any standard engineering economics method such as sensitivity and probabilistic analysis. If additional analysis casts substantial doubt on the life cycle cost analysis results, a Federal agency should consider obtaining more reliable data or eliminating the building energy or water system alternative. [55 FR 48220, Nov. 20, 1990, as amended at 61 FR 32651, June 25, 1996]