| 
                 
                    Closing price on 4/18/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    18.00 | 
                 
                
                    | High | 
                    18.00 | 
                 
                
                    | Low | 
                    18.00 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    6.09 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SCL Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2011
             | 
            
                +0.30 / +1.69%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2011
             | 
            
                -0.80 / -4.32%
             |             
            
                17.50
             |           
            
                17.70
             |               
            
                17.50
             |                           
            
                17.70
             | 
            
                17.52
             |                     
            
                5.99
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2011
             | 
            
                -1.10 / -5.61%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                18.50
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                6.26
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2011
             | 
            
                0.00 / 0.00%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                19.60
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                6.64
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                19.60
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                6.64
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2011
             | 
            
                -0.60 / -2.97%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                19.60
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                6.64
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2011
             | 
            
                -0.30 / -1.46%
             |             
            
                19.50
             |           
            
                20.20
             |               
            
                19.10
             |                           
            
                20.20
             | 
            
                19.58
             |                     
            
                6.84
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2011
             | 
            
                +1.50 / +7.89%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                6.94
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2011
             | 
            
                -0.50 / -2.56%
             |             
            
                20.60
             |           
            
                20.60
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                20.54
             |                     
            
                6.43
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2011
             | 
            
                -0.90 / -4.41%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                6.60
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2011
             | 
            
                +0.30 / +1.49%
             |             
            
                20.40
             |           
            
                20.40
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                6.91
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2011
             | 
            
                +0.10 / +0.50%
             |             
            
                20.00
             |           
            
                20.30
             |               
            
                19.10
             |                           
            
                20.10
             | 
            
                19.86
             |                     
            
                6.81
             |                                 
            
                15,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2011
             | 
            
                -0.80 / -3.85%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.00
             |                           
            
                20.00
             | 
            
                20.31
             |                     
            
                6.77
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2011
             | 
            
                -0.60 / -2.80%
             |             
            
                20.10
             |           
            
                20.80
             |               
            
                20.10
             |                           
            
                20.80
             | 
            
                20.42
             |                     
            
                7.04
             |                                 
            
                50,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2011
             | 
            
                +0.40 / +1.90%
             |             
            
                22.20
             |           
            
                22.20
             |               
            
                20.90
             |                           
            
                21.40
             | 
            
                21.30
             |                     
            
                7.25
             |                                 
            
                19,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2011
             | 
            
                +0.50 / +2.44%
             |             
            
                20.90
             |           
            
                21.00
             |               
            
                20.00
             |                           
            
                21.00
             | 
            
                20.92
             |                     
            
                7.11
             |                                 
            
                13,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2011
             | 
            
                +0.50 / +2.50%
             |             
            
                21.40
             |           
            
                21.40
             |               
            
                19.50
             |                           
            
                20.50
             | 
            
                20.95
             |                     
            
                6.94
             |                                 
            
                14,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2011
             | 
            
                -0.50 / -2.44%
             |             
            
                21.60
             |           
            
                21.60
             |               
            
                18.90
             |                           
            
                20.00
             | 
            
                20.61
             |                     
            
                6.77
             |                                 
            
                9,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2011
             | 
            
                -0.40 / -1.91%
             |             
            
                20.00
             |           
            
                20.50
             |               
            
                20.00
             |                           
            
                20.50
             | 
            
                20.30
             |                     
            
                6.94
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2011
             | 
            
                -1.10 / -5.00%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.90
             |                           
            
                20.90
             | 
            
                20.95
             |                     
            
                7.08
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2011
             | 
            
                -0.20 / -0.90%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.00
             |                           
            
                22.00
             | 
            
                22.40
             |                     
            
                7.45
             |                                 
            
                11,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2011
             | 
            
                +0.30 / +1.37%
             |             
            
                20.80
             |           
            
                22.20
             |               
            
                20.00
             |                           
            
                22.20
             | 
            
                21.13
             |                     
            
                7.52
             |                                 
            
                58,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2011
             | 
            
                -0.20 / -0.90%
             |             
            
                20.80
             |           
            
                21.90
             |               
            
                20.80
             |                           
            
                21.90
             | 
            
                20.84
             |                     
            
                7.41
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2011
             | 
            
                -0.70 / -3.07%
             |             
            
                22.60
             |           
            
                22.60
             |               
            
                22.00
             |                           
            
                22.10
             | 
            
                22.26
             |                     
            
                7.48
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2011
             | 
            
                +0.60 / +2.70%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                20.60
             |                           
            
                22.80
             | 
            
                22.56
             |                     
            
                7.72
             |                                 
            
                10,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2011
             | 
            
                +0.70 / +3.26%
             |             
            
                20.00
             |           
            
                22.20
             |               
            
                20.00
             |                           
            
                22.20
             | 
            
                22.08
             |                     
            
                7.52
             |                                 
            
                41,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |