; (B) the durability of the infrastructure constructed with plastic waste; and (C) any cost savings achieved through the use of plastic waste in the demonstration projects. (d) Authorization of appropriations There are authorized to be appropriated such sums as are necessary to carry out this section. 6. Study on options to advance technologies for converting plastic waste to chemicals, feedstocks, and other products (a) In general The EPA Administrator shall seek to enter into an arrangement with the National Academies of Sciences, Engineering, and Medicine under which the National Academies will conduct a study on options to advance technologies (including pyrolysis, hydropyrolysis, methanolysis, gasification, and enzymatic breakdown) for converting plastic waste to useful products, such as chemicals, feedstocks, fuels, and energy. (b) Inclusions As part of the study under subsection (a), the National Academies shall conduct an evaluation of— (1) the air emissions associated with technologies described in that subsection