; and (ii) the supply chain of which is vulnerable to disruption. . 10013. Natural gas tax repeal (a) Repeal Section 136 of the Clean Air Act ( 42 U.S.C. 7436 ) (relating to methane emissions and waste reduction incentive program for petroleum and natural gas systems) is repealed. (b) Rescission The unobligated balance of any amounts made available under section 136 of the Clean Air Act ( 42 U.S.C. 7436 ) (as in effect on the day before the date of enactment of this Act) is rescinded. 10014. Repeal of greenhouse gas reduction fund (a) Repeal Section 134 of the Clean Air Act ( 42 U.S.C. 7434 ) (relating to the greenhouse gas reduction fund) is repealed. (b) Rescission The unobligated balance of any amounts made available under section 134 of the Clean Air Act ( 42 U.S.C. 7434 ) (as in effect on the day before the date of enactment of this Act) is rescinded. (c) Conforming amendment Section 60103 of Public Law 117–169 (relating to the greenhouse gas reduction fund) is repealed. 10015. Keeping America’s refineries operating (a) In general The owner or operator of a stationary source described in subsection (b) of this section shall not be required by the regulations promulgated under section 112(r)(7)(B) of the Clean Air Act ( 42 U.S.C. 7412(r)(7)(B) ) to include in any hazard assessment under clause (ii) of such section 112(r)(7)(B) an assessment of safer technology and alternative risk management measures with respect to the use of hydrofluoric acid in an alkylation unit. (b) Stationary source described A stationary source described in this subsection is a stationary source (as defined in section 112(r)(2)(C) of the Clean Air Act ( 42 U.S.C. 7412(r)(2)(C) )) in North American Industry Classification System code 324— (1) for which a construction permit or operating permit has been issued pursuant to the Clean Air Act ( 42 U.S.C. 7401 et seq. )