; and (2) any recommendations of the Secretary with respect to the testing program, including any recommendations for amendments to laws (including regulations) and the establishment of standards, that— (A) would enhance the safe operation of interstate gas or hazardous liquid pipeline facilities; and (B) are technically, operationally, and economically feasible. (l) Standards If a report under subsection (k) indicates that it is practicable to establish technically, operationally, and economically feasible standards for the use of a safety-enhancing technology and any cor­re­spond­ing operational practices tested by the testing program described in the report, the Secretary, as soon as practicable after submission of the report, may promulgate regulations consistent with chapter 5 of title 5 (commonly known as the Administrative Procedures Act ) that— (1) allow operators of interstate gas or hazardous liquid pipeline facilities to use the relevant technology or practice to the extent practicable