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                    Closing price on 9/11/2007
                 |  |  
    
        |           
                
                    | Open | 52.80 |  
                    | High | 53.00 |  
                    | Low | 52.50 |  
                    | Volume | 38,500 |  
                    | Split-adjusted Price | 6.55 |  
                
             | 
 |  MPC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/11/2007 | +0.20 / +0.38% | 52.80 | 53.00 | 52.50 | 52.80 | 52.80 | 6.55 | 38,500 |   |  
            | 9/10/2007 | -0.10 / -0.19% | 52.50 | 53.50 | 52.50 | 52.60 | 52.60 | 6.53 | 47,200 |   |  			
            | 9/7/2007 | +0.70 / +1.35% | 52.00 | 53.40 | 52.00 | 52.70 | 52.70 | 6.54 | 27,400 |   |  
            | 9/6/2007 | -0.80 / -1.52% | 52.00 | 52.80 | 51.80 | 52.00 | 52.00 | 6.45 | 29,200 |   |  			
            | 9/5/2007 | -1.00 / -1.86% | 53.60 | 54.00 | 52.00 | 52.80 | 52.80 | 6.55 | 24,500 |   |  
            | 9/4/2007 | 0.00 / 0.00% | 53.50 | 54.50 | 53.50 | 53.80 | 53.80 | 6.68 | 38,100 |   |  			
            | 8/31/2007 | +0.70 / +1.32% | 53.00 | 53.80 | 53.00 | 53.80 | 53.80 | 6.68 | 53,400 |   |  
            | 8/30/2007 | +0.20 / +0.38% | 51.00 | 53.10 | 51.00 | 53.10 | 53.10 | 6.59 | 37,900 |   |  			
            | 8/29/2007 | +2.60 / +5.17% | 50.80 | 52.90 | 50.60 | 52.90 | 52.90 | 6.57 | 36,100 |   |  
            | 8/28/2007 | -0.40 / -0.79% | 50.50 | 50.50 | 48.00 | 50.30 | 50.30 | 6.24 | 17,000 |   |  			
            | 8/27/2007 | +0.70 / +1.40% | 50.30 | 50.80 | 50.30 | 50.70 | 50.70 | 6.29 | 12,800 |   |  
            | 8/24/2007 | -0.40 / -0.79% | 50.00 | 50.60 | 50.00 | 50.00 | 50.00 | 6.21 | 54,400 |   |  			
            | 8/23/2007 | -0.40 / -0.79% | 50.50 | 50.50 | 50.10 | 50.40 | 50.40 | 6.26 | 7,500 |   |  
            | 8/22/2007 | -0.50 / -0.97% | 51.00 | 51.50 | 50.50 | 50.80 | 50.80 | 6.31 | 13,700 |   |  			
            | 8/21/2007 | -0.10 / -0.19% | 51.60 | 51.70 | 51.30 | 51.30 | 51.30 | 6.37 | 16,300 |   |  
            | 8/20/2007 | +0.40 / +0.78% | 52.00 | 52.00 | 50.00 | 51.40 | 51.40 | 6.38 | 25,900 |   |  			
            | 8/17/2007 | -1.50 / -2.86% | 52.70 | 52.70 | 51.00 | 51.00 | 51.00 | 6.33 | 10,200 |   |  
            | 8/16/2007 | -0.50 / -0.94% | 53.00 | 53.30 | 52.50 | 52.50 | 52.50 | 6.52 | 18,900 |   |  			
            | 8/15/2007 | -1.00 / -1.85% | 53.00 | 53.10 | 52.70 | 53.00 | 53.00 | 6.58 | 23,000 |   |  
            | 8/14/2007 | 0.00 / 0.00% | 53.00 | 54.00 | 53.00 | 54.00 | 54.00 | 6.70 | 37,900 |   |  			
            | 8/13/2007 | +0.50 / +0.93% | 52.00 | 54.00 | 52.00 | 54.00 | 54.00 | 6.70 | 55,900 |   |  
            | 8/10/2007 | -0.50 / -0.93% | 53.90 | 54.00 | 53.00 | 53.50 | 53.50 | 6.64 | 83,900 |   |  			
            | 8/9/2007 | +1.00 / +1.89% | 53.00 | 54.00 | 52.80 | 54.00 | 54.00 | 6.70 | 126,000 |   |  
            | 8/8/2007 | -0.80 / -1.49% | 53.00 | 53.50 | 53.00 | 53.00 | 53.00 | 6.58 | 20,600 |   |  			
            | 8/7/2007 | +2.00 / +3.86% | 51.60 | 53.80 | 51.50 | 53.80 | 53.80 | 6.68 | 84,600 |   |  
            | 8/6/2007 | +0.30 / +0.58% | 50.50 | 51.90 | 50.50 | 51.80 | 51.80 | 6.43 | 140,100 |   |  			
            | 8/3/2007 | 0.00 / 0.00% | 51.50 | 51.60 | 50.50 | 51.50 | 51.50 | 6.39 | 32,500 |   |  
            | 8/2/2007 | +0.50 / +0.98% | 53.00 | 53.50 | 50.50 | 51.50 | 51.50 | 6.39 | 111,900 |   |  			
            | 8/1/2007 | +2.50 / +5.15% | 48.00 | 51.00 | 48.00 | 51.00 | 51.00 | 6.33 | 23,200 |   |  
            | 7/31/2007 | +0.20 / +0.41% | 48.20 | 48.90 | 48.00 | 48.50 | 48.50 | 6.02 | 155,500 |   |  |