| 
                 
                    Closing price on 5/31/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.60 | 
                 
                
                    | High | 
                    11.60 | 
                 
                
                    | Low | 
                    11.60 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    3.93 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SCL Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/31/2011
             | 
            
                -0.30 / -2.52%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                3.93
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2011
             | 
            
                +0.40 / +3.48%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                10.70
             |                           
            
                11.90
             | 
            
                11.59
             |                     
            
                4.03
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2011
             | 
            
                +0.10 / +0.88%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                3.89
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2011
             | 
            
                +0.70 / +6.54%
             |             
            
                10.00
             |           
            
                11.40
             |               
            
                10.00
             |                           
            
                11.40
             | 
            
                10.91
             |                     
            
                3.86
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2011
             | 
            
                -0.60 / -5.31%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                3.62
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2011
             | 
            
                -0.90 / -7.38%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.50
             |                     
            
                3.83
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2011
             | 
            
                -0.30 / -2.40%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.07
             |                     
            
                4.13
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2011
             | 
            
                -1.00 / -7.41%
             |             
            
                12.50
             |           
            
                13.40
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.78
             |                     
            
                4.23
             |                                 
            
                6,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2011
             | 
            
                +0.60 / +4.65%
             |             
            
                12.10
             |           
            
                13.50
             |               
            
                12.10
             |                           
            
                13.50
             | 
            
                12.91
             |                     
            
                4.57
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2011
             | 
            
                -0.10 / -0.77%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                4.37
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2011
             | 
            
                +0.20 / +1.56%
             |             
            
                12.70
             |           
            
                13.00
             |               
            
                12.70
             |                           
            
                13.00
             | 
            
                12.75
             |                     
            
                4.40
             |                                 
            
                25,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2011
             | 
            
                -1.30 / -9.22%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.74
             |                     
            
                4.33
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2011
             | 
            
                -0.20 / -1.40%
             |             
            
                13.60
             |           
            
                14.50
             |               
            
                13.30
             |                           
            
                14.10
             | 
            
                13.46
             |                     
            
                4.77
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2011
             | 
            
                +0.90 / +6.72%
             |             
            
                14.10
             |           
            
                14.30
             |               
            
                14.00
             |                           
            
                14.30
             | 
            
                14.10
             |                     
            
                4.84
             |                                 
            
                9,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2011
             | 
            
                -0.50 / -3.60%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                4.54
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2011
             | 
            
                -0.20 / -1.42%
             |             
            
                14.10
             |           
            
                14.10
             |               
            
                13.20
             |                           
            
                13.90
             | 
            
                13.36
             |                     
            
                4.71
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                14.10
             |           
            
                14.10
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                4.77
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2011
             | 
            
                +0.20 / +1.44%
             |             
            
                14.00
             |           
            
                14.10
             |               
            
                14.00
             |                           
            
                14.10
             | 
            
                14.06
             |                     
            
                4.77
             |                                 
            
                15,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2011
             | 
            
                -0.90 / -6.08%
             |             
            
                14.00
             |           
            
                14.50
             |               
            
                13.90
             |                           
            
                13.90
             | 
            
                14.05
             |                     
            
                4.71
             |                                 
            
                17,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2011
             | 
            
                +0.70 / +4.96%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                5.01
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2011
             | 
            
                +0.60 / +4.44%
             |             
            
                14.10
             |           
            
                14.10
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                4.77
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2011
             | 
            
                +0.60 / +4.65%
             |             
            
                13.30
             |           
            
                13.50
             |               
            
                13.30
             |                           
            
                13.50
             | 
            
                13.46
             |                     
            
                4.57
             |                                 
            
                19,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2011
             | 
            
                -0.90 / -6.52%
             |             
            
                12.60
             |           
            
                12.90
             |               
            
                12.60
             |                           
            
                12.90
             | 
            
                12.72
             |                     
            
                4.37
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2011
             | 
            
                +0.20 / +1.47%
             |             
            
                13.90
             |           
            
                14.00
             |               
            
                13.00
             |                           
            
                13.80
             | 
            
                13.54
             |                     
            
                4.67
             |                                 
            
                33,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2011
             | 
            
                -0.90 / -6.21%
             |             
            
                14.10
             |           
            
                14.10
             |               
            
                13.60
             |                           
            
                13.60
             | 
            
                13.88
             |                     
            
                4.60
             |                                 
            
                5,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2011
             | 
            
                -1.00 / -6.45%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                14.50
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                4.91
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2011
             | 
            
                -0.20 / -1.27%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                5.25
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2011
             | 
            
                -1.10 / -6.55%
             |             
            
                15.70
             |           
            
                15.70
             |               
            
                15.70
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                5.32
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2011
             | 
            
                -1.20 / -6.67%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                5.69
             |                                 
            
                24,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.09
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |