II 118th CONGRESS 1st Session S. 2045 IN THE SENATE OF THE UNITED STATES June 20, 2023 Mr. Markey (for himself, Mr. Bennet , Mr. Blumenthal , Mr. Booker , Ms. Duckworth , Mr. Durbin , Mr. Sanders , Ms. Smith , Mr. Van Hollen , Ms. Warren , and Mr. Whitehouse ) introduced the following bill; which was read twice and referred to the Committee on Environment and Public Works A BILL To improve air quality management and the safety of communities using the best available monitoring technology and data.