Annex B3-3
Noise Assessment for Construction of Landfill Extension
NSR: IR1 Island Resort, Siu Sai Wan
                                                                   
      Measured noise level, dB(A) Distance from source to SLM,m       Distance from source to NSP,m Corr. For Corr. For Predicted Construction Noise Level By Quarter (dB(A))       Predicted Construction Noise Level by Quarter (dB(A))     Max.
          SWL Distance façade   2011 2012 2013 2014 2015 2016 2017 2018 2019 CNL
Activity No. Activity Description     dB(A) dB(A) dB(A) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 dB(A)
                                       
Fixed plants 1a Excavation         118 2600 -76 3 45                  
  1b Formwork and reinforcement         112 2600 -76 3 39                  
  1c Concreting         119 2600 -76 3 46                  
Structures 2a Formwork and reinforcement         112 2600 -76 3   39 39 39                
  2b Concreting         119 2600 -76 3   46 46 46                
Demolition 3a Demolition         125 2600 -76 3     52                
  3b Crushing of concrete         103 2600 -76 3     30                
Construction of Monitoring Wells 3e Construction of Monitoring Wells         112 2600 -76 3   39                  
Site Formation 4a Site formation         123 2600 -76 3   50 50 50 50 50 50                
  4d Construction of drainage channels and sumps         116 2600 -76 3   43 43 43 43 43                
  4e Construction of drainage tunnel - southern portal         119 2850 -77 3   45                  
  4e Construction of drainage tunnel - northern portal         119 3100 -78 3     44                
Phase 1 5d Construction of drainage channels and sumps         116 2500 -76 3     43               #REF! #REF!  
  5f Road construction         122 2500 -76 3     49               #REF! #REF!  
  5g Installation of liner and modification of existing gas well         116 2500 -76 3     43                
  6d Capping         118 2500 -76 3         45 45            
  6e Landscaping         115 2500 -76 3         42 42            
  6f Construction of permanent gas wells         114 2500 -76 3         41 41            
Phase 2 5d Construction of drainage channels and sumps         116 2550 -76 3       43            
  5f Road construction         122 2550 -76 3       49            
  5g Installation of liner and modification of existing gas well         116 2550 -76 3       43            
  6d Capping         118 2550 -76 3         45 45          
  6e Landscaping         115 2550 -76 3         42 42          
  6f Construction of permanent gas wells         114 2550 -76 3         41 41          
Phase 3 5d Construction of drainage channels and sumps         116 2600 -76 3         43            
  5f Road construction         122 2600 -76 3         49            
  5g Installation of liner and modification of existing gas well         116 2600 -76 3         43            
  6d Capping         118 2600 -76 3             44 44        
  6e Landscaping         115 2600 -76 3             42 42        
  6f Construction of permanent gas wells         114 2600 -76 3             41 41        
Phase 4 5d Construction of drainage channels and sumps         116 2650 -76 3           43        
  5f Road construction         122 2650 -76 3           49        
  5g Installation of liner and modification of existing gas well         116 2650 -76 3           43        
  6d Capping         118 2650 -76 3             44 44      
  6e Landscaping         115 2650 -76 3             42 42      
  6f Construction of permanent gas wells         114 2650 -76 3             41 41      
Phase 5 5d Construction of drainage channels and sumps         116 2750 -77 3             42        
  5f Road construction         122 2750 -77 3             48        
  5g Installation of liner and modification of existing gas well         116 2750 -77 3             43        
  6d Capping         118 2750 -77 3                 44 44    
  6e Landscaping         115 2750 -77 3                 42 42    
  6f Construction of permanent gas wells         114 2750 -77 3                 40 40    
Phase 6 5d Construction of drainage channels and sumps         116 2900 -77 3               42    
  5f Road construction         122 2900 -77 3               48    
  5g Installation of liner and modification of existing gas well         116 2900 -77 3               42    
  6d Capping         118 2900 -77 3                 43 43  
  6e Landscaping         115 2900 -77 3                 41 41  
  6f Construction of permanent gas wells         114 2900 -77 3                 40 40  
All over construction, operation & restoration 7a Site housekeeping         109 2600 -76 3 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36  
7b Vehicle maintenance         102 2600 -76 3         29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29      
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                           
  Predicted Noise Levels, dB(A) 49 47 53 52 52 55 51 54 37 37 37 51 48 48 37 51 48 48 37 51 48 48 37 50 48 48 37 50 47 47 37 37 47 47 55
                       
                       
Note:                                                                                                      
Distance Correction for PMEs = 10*log(2*PI*r2)