Engineering Report

Engineering Report. Means: (i) in connection with a December 31 Determination Date, a report prepared by EXCO's independent oil and gas engineering firm evaluating the Proved Reserves of the Corporation in the manner set forth in Section 6; or (ii) in connection with a Determination Date caused by a Change of Control, EXCO's internal engineering report evaluating the Proved Reserves of the Corporation in the manner set forth in Section 6;