These General Regulations shall be effective on June 1, 1987, and shall apply to power generation, operation, maintenance, and replacement activities at the Boulder Canyon Project after May 31, 1987. ``General Regulations for the Charges for the Sale of Power from the Boulder Canyon Project'' are the subject of a separate rule, under 10 CFR part 904, by the Secretary of Energy, acting by and through the Administrator of Western. The ``General Regulations for Generation and Sale of Power in Accordance with the Boulder Canyon Project Adjustment Act,'' dated May 20, 1941, and the ``General Regulations for Lease of Power,'' dated April 25, 1930, terminate May 31, 1987.