Investor Presentaiton

Midstream Assets Generate Consistent Results Wholesale Marketing In West Texas Product Marketing Terminals Consistent Contribution Margin Owned (San Angelo, Abilene, Tyler); Third-Party (Aledo, Odessa, Big Springs, Frost) Positive contribution margin every quarter since 2006 Total Sales Volumes (Barrels Per Day) (1) Consistent Contribution Margin ($MM) (1) 16,557 2008 15,595 15,546 14,354 13,378 $26.2 21,573 $24.8 $23.3 $23.7 $20.2 $25.3 2008 2009 2010 2011 YTD 2011 YTD 2012 2009 2010 2011 YTD 2011 YTD 2012 (1) YTD as of September 30, 2012 17

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