[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR1610.4-6] [Page 19] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 1600--PLANNING, PROGRAMMING, BUDGETING--Table of Contents Subpart 1610--Resource Management Planning Sec. 1610.4-6 Estimation of effects of alternatives. The District or Area Manager shall estimate and display the physical, biological, economic, and social effects of implementing each alternative considered in detail. The estimation of effects shall be guided by the planning criteria and procedures implementing the National Environmental Policy Act. The estimate may be stated in terms of probable ranges where effects cannot be precisely determined.