Series A Preferred Units

On September 2, 2009, the Partnership issued 4,371,586 Series A Preferred Units. As of June 30, 2013, the Series A Preferred Units were convertible to 4,672,835 common units, and if outstanding, are mandatorily redeemable on September 2, 2029 for $80 million plus all accrued but unpaid distributions and interest thereon. The Series A Preferred Units receive fixed quarterly cash distributions of $0.445 per unit if outstanding on the record dates of the Partnership's common unit distributions. Holders can elect to convert Series A Preferred Units to common units at any time in accordance with the partnership agreement.

The following table provides a reconciliation of the beginning and ending balances of the Series A Preferred Units for the six months ended June 30, 2013:



	Units	Amount
Outstanding at beginning of period	4,371,586	$	73
Accretion to redemption value	—	—
Outstanding at end of period	4,371,586	$	73	*

* This amount will be accreted to $80 million plus any accrued but unpaid distributions and interest by deducting amounts from

partners' capital over the remaining periods until the mandatory redemption date of September 2, 2029.

In July 2013, the Partnership was notified by two of the Series A Preferred Units holders of their election to convert their Series A Preferred Units to common units; these holders owned 2.4 million Series A Preferred Units. The total number of common units they will receive is 2.6 million.