AUTHORIZATION OF ADDITIONAL AMOUNTS FOR THE COLORADO RIVER STORAGE PROJECT.

SECTION 1. AUTHORIZATION OF ADDITIONAL AMOUNTS FOR THE COLORADO RIVER STORAGE PROJECT. In order to provide for the continued construction of the Colorado River Storage Project, and for the continued construction of the municipal and industrial water features of the Bonneville Unit of the Central Utah Project, the amount which section 12 of the Act of April 11, 1956 (70 Stat. 110; 43 U.S.C. 620k), authorizes to be appropriated, which was increased by the Act of August 10, 1972 (86 Stat. 525; 43 U.S.C. 620k note), is hereby further increased by $45,456,000 plus or minus such amounts, if any, as may be required by reason of changes in construction costs as indicated by engineering cost indexes applicable to the type of construction involved. This additional sum shall be available solely for continuing construction of the previously authorized units and projects named in such Act of August 10, 1972.