Complex sentence: The project area consisted of 802,571 acres, primarily composed of The Bunkerville Allotment 145,604 acres and the New Trespass Lands 451,775 acres, portions of project area are managed under The Bureau of Land Management, Bureau of Reclamation and the National Park Service.
Split into simpler sentences: The project area consisted of 802,571 acres, primarily composed of The Bunkerville Allotment (145,604 acres) and the New Trespass Lands (451,775 acres). Portions of the project area are managed under the Bureau of Land Management, the Bureau of Reclamation, and the National Park Service.