5 U.S. Code § 607
5 U.S. Code § 607 is about Preparation of analyses. It is under Part 1 (The Analysis Of Regulatory Functions) Chapter 6 (The Analysis Of Regulatory Functions) of Title 5 (Government Organizations and Employees) of the Code.
In complying with the provisions of sections 603 and 604 of this title, an agency may provide either a quantifiable or numerical description of the effects of a proposed rule or alternatives to the proposed rule, or more general descriptive statements if quantification is not practicable or reliable.