; (2) by inserting and legal after factual ; and (3) by inserting The detailed statement shall include an economic assessment or a summary thereof that is sufficiently detailed to support the agency’s certification. before The agency shall provide such certification . (e) Quantification requirements Section 607 of title 5, United States Code, is amended to read as follows: 607. Quantification requirements In complying with sections 603 and 604, an agency shall provide— (1) a quantifiable or numerical description of the effects of the proposed or final rule and alternatives to the proposed or final rule; or (2) a more general descriptive statement and a detailed statement explaining why quantification is not practicable or reliable. . 305. Repeal of waiver and delay authority