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