[Code of Federal Regulations] [Title 40, Volume 31] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR1506.4] [Page 888] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER V--COUNCIL ON ENVIRONMENTAL QUALITY PART 1506_OTHER REQUIREMENTS OF NEPA--Table of Contents Sec. 1506.4 Combining documents. Any environmental document in compliance with NEPA may be combined with any other agency document to reduce duplication and paperwork.