; and (2) by adding at the end the following: (G) Frequency of audits and inspections (i) In general Except as provided in clause (ii), the Secretary may not conduct any audit or inspection under this paragraph of a covered chemical facility more frequently than once every 2 years. (ii) CFATS Recognition Program In the case of a covered chemical facility that participates in the CFATS Recognition Program under subsection (c)(5) and meets compliance, audit, and inspection requirements under that program, the Secretary may not conduct any audit or inspection under this paragraph of that covered chemical facility more frequently than once every 3 years. . 7. Personnel surety program Section 2102(d)(2)(A) of the Homeland Security Act of 2002 ( 6 U.S.C. 622(d)(2)(A) ) is amended— (1) in the matter preceding clause (i), by inserting is mandatory for each owner or operator of a covered chemical facility assigned to tier 1 or 2 and optional for each owner or operator of a covered chemical facility assigned to tier 3 or tier 4 that after carry out a Personnel Surety Program that ; and (2) in clause (ii), by inserting who will have access to any chemical of interest designated under Appendix A to part 27 of title 6, Code of Federal Regulations, or any successor thereto, after about an individual . 8. Security risk assessment approach and corresponding tiering methodology Section 2102(e) of the Homeland Security Act of 2002 ( 6 U.S.C. 622(e) ) is amended— (1) in paragraph (2)(A), by striking develop and inserting maintain ; and (2) in paragraph (3)— (A) in subparagraph (B)— (i) by striking the period at the end and inserting , including— ; and (ii) by adding at the end the following: (i) each input and assumption under the tiering methodology; (ii) the rational for each input; and (iii) the output of the tiering methodology.