; (2) the magnitude of methane emissions reductions; (3) innovation in technical or policy approaches; (4) the number of low-income households anticipated to benefit from the assistance; and (5) overall cost-effectiveness of the project. (g) Auditing and reporting requirements The Secretary shall establish auditing and reporting requirements for States with respect to the performance of eligible projects funded pursuant to grants awarded under this section with respect to meeting the goals of the program described in subsection (f). (h) Prevailing wages All laborers and mechanics employed by contractors or subcontractors in the performance of construction, alteration, or repair work assisted, in whole or in part, by a grant under this section shall be paid wages at rates not less than those prevailing on similar construction in the locality as determined by the Secretary of Labor in accordance with subchapter IV of chapter 31 of title 40. With respect to the labor standards in this subsection, the Secretary of Labor shall have the authority and functions set forth in Reorganization Plan Numbered 14 of 1950 (64 Stat. 1267; 5 U.S.C. App.) and section 3145 of title 40. (i) Definitions In this section: (1) Low-income household The term low-income household means a household that is eligible to receive payments under section 2605(b)(2) of the Low-Income Home Energy Assistance Act of 1981 ( 42 U.S.C. 8624(b)(2) ). (2) Natural gas distribution company The term natural gas distribution company means a person or municipality engaged in the local distribution of natural gas to the public. (j) Authorization of appropriations There are authorized to be appropriated to the Secretary $250,000,000 to carry out this section in each fiscal year beginning in fiscal year 2021 and ending in fiscal year 2030.