The Department of Energy (DOE)/Occidental Oil Shale, Inc. (OOSI) Cooperative Agreement No. EF-77-A-03-1848 (formerly EF-77-A-04-3873, dated September 30, 1976), involves a two-phase program. Phase I (Engineering Development) covers a specified scope of work over a 30-month period commencing November 1, 1976, to be conducted at 0051'5 Logan Wash Site in Garfield County, Colorado.' Phase II will begin as soon as possible after Phase I and run for 41 months. Phase II will cost approximately $50,000,000 and DOE's share will be approximately $24,000,000. For Phase II to become effective, the parties must give notice to proceed 45 days before the end of Phase I and agree to a specific work program, revised cost estimates, and such other changes as may be appropriate.