CLEAN AIR ACT AMENDMENTS OF 1977 HEARING BEFORE THE SUBCOMMITTEE ON OF THE COMMITTEE ON ENVIRONMENT AND PUBLIC WORKS UNITED STATES SENATE NINETY-FIFTH CONGRESS FIRST SESSION ON S. 251, S. 252, and S. 253 BILLS TO AMEND THE CLEAN AIR ACT, AS AMENDED FEBRUARY 15, 1977 DENVER, COLO. PART 4 SERIAL NO. 95-H7 Printed for the use of the Committee on Environment and Public Works 87-299 O U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 1977 LEON G. BILLINGS and HAROLD H. BRAYMAN (Minority), Senior Professional Staff Members PHILIP T. CUMMINGS, RICHARD M. HARRIS, RICHARD E. HEROD (Minority), and KATHERINE Y. CUDLIPP (Minority), Associate Counsels Professional and Research staff: KARL R. BRAITHWAITE, PAUL CHIMES, E. KEVIN CORNELL, GEORGE F. FENTON, Jr., RANDOLPH G. FLOOD, KATHALEEN R. E. FORCUM, JOHN D. FRESHMAN, ANN GARRABRANT, RICHARD T. GREER, WESLEY F. HAYDEN, VERONICA A. HOLLAND, RONALD L. KATZ, KATHLEEN A. KORPON, JUDY F. PARENTE, JOHN B. PURINTON, Jr., JAMES D. RANGE (Assistant Counsel, Minority), JACQUELINE E. SCHAFER, CHARLENE A. STURBITTS, E. STEVENS SWAIN, Jr., ROBERT VAN HEUVELEN, SALLY W. Walker, and HAVEN WHITESIDE |