; (C) compressor stations; (D) storage facilities; and (E) other vulnerable infrastructure; (4) identify high-risk characteristics of pipelines, wells, and materials, geologic risk factors, or other key factors that increase the likelihood of methane leaks; and (5) in collaboration with private entities and institutions of higher education, quantify and map significant methane leaks across the United States. (b) Considerations In carrying out the program under this section, the Secretary shall consider the following: (1) Historical data of methane leaks. (2) Public health consequences. (3) Public safety. (4) Novel materials and designs for pipelines, compressor stations, components, and well casings. (5) Regional geologic traits. (6) Induced and natural seismicity. (c) Authorization of appropriations For activities under this section, there are authorized to be appropriated to the Secretary— (1) $20,000,000 for fiscal years 2019; (2) $21,000,000 for fiscal years 2020; (3) $22,050,000 for fiscal years 2021; (4) $23,153,000 for fiscal years 2022; and (5) $24,310,000 for fiscal years 2023. . (b) Report Not later than 1 year after the date of enactment of this Act, the Secretary, in coordination with the Secretary of Transportation, shall submit to the Committee on Science, Space, and Technology, the Committee on Transportation and Infrastructure, and the Committee on Energy and Commerce of the House of Representatives and the Committee on Energy and Natural Resources and the Committee on Commerce, Science, and Transportation of the Senate a report on mitigating natural gas storage leaks. The report shall include the following: (1) A quantitative study to evaluate the key uncertainties related to the costs and benefits of downhole safety valves for the natural gas storage industry in the United States, including— (A) malfunction and failure rates of modern downhole safety valve designs; (B) the frequency of well failures