Vice Pres-Operational Support Onderdonk Keith P covered exercise/tax liability with 6,062 units of Common Units, exercised 5,874 units of Common Units at a strike of $17.77, returned $104,381 worth of Common Units to the company (5,874 units at $17.77) and was granted 10,759 units of Common Units, increasing direct ownership by 6% to 80,689 units (SEC Form 4)