[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3141.5-1] [Page 415-416] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 3140_LEASING IN SPECIAL TAR SAND AREAS--Table of Contents Subpart 3141_Leasing in Special Tar Sand Areas Sec. 3141.5-1 Economic evaluation. Prior to any lease sale for a combined hydrocarbon lease, the authorized officer shall request an economic [[Page 416]] evaluation of the total hydrocarbon resource on each proposed lease tract exclusive of coal, oil shale, or gilsonite. [70 FR 58615, Oct. 7, 2005]