Complex sentence: On November 6,1981, the Secretary of the Interior James G. Watt recommended Plan 6 and in April 1984, it was approved with the exception of the Cliff Dam which needed further study and would later be removed from CAP.
Split into simpler sentences: On November 6,1981, the Secretary of the Interior James G. Watt recommended Plan 6. In April 1984, it was approved with the exception of the Cliff Dam which needed further study and would eventually be removed from CAP.