This excerpt taken from the BPL 10-Q filed May 6, 2009.
Performance Units. Distribution Equivalent Rights shall be paid at the same time and under the same conditions as the underlying Performance Units are paid. No payments of Distribution Equivalent Rights will be made (A) prior to the end of the Performance Period set forth in the Grant Letter or (B) to any Participant whose employment by the Company
terminates prior to the end of the Performance Period for any reason other than Retirement, death, Disability or involuntary termination without Cause. A Participant will receive the aggregate amount of the Participants Distribution Equivalent Rights in cash, or in Units as determined by the Committee in its discretion, as soon as practicable after the end of the applicable Performance Period.