polyfluoroalkyl substance, or class of such substances. (2) Authorization of appropriations There is authorized to be appropriated to the Administrator to carry out this subsection $200,000,000 for each of fiscal years 2024 through 2028, to remain available until expended. (d) No increased bonding authority Amounts awarded to an owner or operator of a publicly owned treatment works under this section may not be used as a source of payment of, or security for (directly or indirectly), in whole or in part, any obligation the interest on which is exempt from the tax imposed under chapter 1 of the Internal Revenue Code of 1986. (e) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Effluent limitation The term effluent limitation has the meaning given that term in section 502 of the Federal Water Pollution Control Act ( 33 U.S.C. 1362 ). (3) Measurable The term measurable means, with respect to a chemical substance or class of chemical substances, capable of being measured using test procedures established under section 304(h) of the Federal Water Pollution Control Act ( 33 U.S.C. 1314 ). (4) Perfluoroalkyl substance The term perfluoroalkyl substance means a chemical of which all of the carbon atoms are fully fluorinated carbon atoms. (5) Polyfluoroalkyl substance The term polyfluoroalkyl substance means a chemical containing at least one fully fluorinated carbon atom and at least one carbon atom that is not a fully fluorinated carbon atom. (6) Priority industry category The term priority industry category means the following point source categories: (A) Organic chemicals, plastics, and synthetic fibers, as identified in part 414 of title 40, Code of Federal Regulations (or successor regulations). (B) Pulp, paper, and paperboard, as identified in part 430 of title 40, Code of Federal Regulations (or successor regulations). (C) Textile mills, as identified in part 410 of title 40, Code of Federal Regulations (or successor