; or (2) for which the owner or operator demonstrates to the Administrator of the Environmental Protection Agency that such stationary source conforms or will conform to the most recent version of American Petroleum Institute Recommended Practice 751. 10017. Homeowner energy freedom (a) In general The following are repealed: (1) Section 50122 of Public Law 117–169 ( 42 U.S.C. 18795a ) (relating to a high-efficiency electric home rebate program). (2) Section 50123 of Public Law 117–169 ( 42 U.S.C. 18795b ) (relating to State-based home energy efficiency contractor training grants). (3) Section 50131 of Public Law 117–169 (136 Stat. 2041) (relating to assistance for latest and zero building energy code adoption). (b) Rescissions The unobligated balances of any amounts made available under each of sections 50122, 50123, and 50131 of Public Law 117–169 ( 42 U.S.C. 18795a , 18795b; 136 Stat. 2041) (as in effect on the day before the date of enactment of this Act) are rescinded. (c) Conforming amendment Section 50121(c)(7) of Public Law 117–169 ( 42 U.S.C. 18795(c)(7) ) is amended by striking , including a rebate provided under a high-efficiency electric home rebate program (as defined in section 50122(d)), . 10018. Study Not later than 180 days after the date of enactment of this Act, the Secretary of Energy, in consultation with the Nuclear Regulatory Commission, shall conduct a study on how to streamline regulatory timelines relating to developing new power plants by examining practices relating to various power generating sources, including fossil and nuclear generating sources. 10019. State primary enforcement responsibility (a) Amendments Section 1422(b) of the Safe Drinking Water Act ( 42 U.S.C. 300h–1(b) ) is amended— (1) in paragraph (2)— (A) by striking Within ninety days and inserting (A) Within ninety days ; (B) by striking and after reasonable opportunity for presentation of views