; or (bb) if the Secretary requires additional time to make the determination. (ii) Federal information policy In collecting information from petitioners under this subparagraph, the Secretary shall not be subject to subchapter I of chapter 35 of title 44, United States Code. . (b) Flammable liquid measures Not later than 180 days after the date of enactment of this Act, the Secretary shall prescribe a regulation to amend Appendix A to part 27 of title 6, United States Code, to provide that when calculating whether a chemical facility of interest holds a release-flammable chemical of interest in an amount that meets a threshold quantity, only a release-flammable chemical of interest in liquid mixtures with a flammability hazard rating of 4 under the document entitled NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response published in 2017 by the National Fire Protection Association, or any successor thereto, shall be included in the calculation. (c) Evaluation of designated chemicals of interest Section 2102(e) of the Homeland Security Act of 2002 ( 6 U.S.C. 622(e) ), as amended by subsection (a) of this section, is amended by adding at the end the following: (8) Chemicals of interest Not later than 180 days after the date of enactment of the Protecting and Securing Chemical Facilities from Terrorist Attacks Act of 2020 , and not less frequently than every 5 years thereafter, the Secretary shall— (A) review Appendix A to part 27 of title 6, Code of Federal Regulations, or any successor thereto, to determine whether, in the opinion of the Secretary— (i) any chemical that is not designated as a chemical of interest should be designated as a chemical of interest; (ii) any chemical of interest should not be designated as a chemical of interest; and (iii) any chemical amount, concentration, or threshold quantity described in Appendix A to part 27 of title 6, Code of Federal Regulations, or any successor thereto, should be modified