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  
 10pm Mon  3 Jan                    3/3 
                                        
 North West England                     
 BENZENE            Level      Year Avg 
 Liverpool Spike    Below        0.69   
                                        
                                        
                                        
 1,3-BUTADIENE      Ljvjl      Year Avg 
 Liverpool Spike      -            -    
                                        
                                        
                                        
 These hydrocarbons can cause cancer.   
 The level is set against a yearly      
 average of 5ppb for Benzene and 1ppb   
 for 1,3-Butadienj, which as standards  
 represent very small health risks.     
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