| Appendix 4.5 |
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| Predicted
Noise Levels from Construction of
Pumping Stations (Unmitigated) |
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| Pumping
Station P1a |
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| Sensitive receiver |
Distance from Construction Activities, m |
Foundation |
Superstructural Works |
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| Excavation, dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
Backfilling,
dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
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| SWL |
122.0 |
102.5 |
116.5 |
108.0 |
102.5 |
116.5 |
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122.05 |
102.53 |
116.500 |
108.01 |
102.53 |
116.50 |
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| CMV1 |
60 |
81.4 |
61.9 |
75.9 |
67.4 |
61.9 |
75.9 |
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| CMV2 |
24 |
89.4 |
69.9 |
83.9 |
75.4 |
69.9 |
83.9 |
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| CMV3* |
66 |
70.6 |
51.1 |
65.1 |
56.6 |
51.1 |
65.1 |
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| CMV4 |
52 |
82.7 |
63.2 |
77.2 |
68.7 |
63.2 |
77.2 |
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| CMV5 |
46 |
83.7 |
64.2 |
78.2 |
69.8 |
64.2 |
78.2 |
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| CMV6 |
30 |
87.5 |
68.0 |
82.0 |
73.5 |
68.0 |
82.0 |
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| THT |
204 |
70.8 |
51.3 |
65.3 |
56.8 |
51.3 |
65.3 |
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| SKW1 |
240 |
69.4 |
49.9 |
63.9 |
55.4 |
49.9 |
63.9 |
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| SKW2 |
266 |
68.5 |
49.0 |
63.0 |
54.5 |
49.0 |
63.0 |
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| SKW3 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW4 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW5 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW6 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW7* |
250 |
59.0 |
39.5 |
53.5 |
45.1 |
39.5 |
53.5 |
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| SKW8* |
300 |
57.5 |
38.0 |
52.0 |
43.5 |
38.0 |
52.0 |
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| SKW9 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW10 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW11 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW12 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW1 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW2 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW3 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW4 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| MTW1 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| MTW2 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| Pumping
Station P1b |
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| Sensitive receiver |
Distance from Construction Activities, m |
Foundation |
Superstructural Works |
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| Excavation, dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
Backfilling,
dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
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| SWL |
122.0 |
102.5 |
116.5 |
108.0 |
102.5 |
116.5 |
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| CMV1* |
130 |
64.7 |
45.2 |
59.2 |
50.7 |
45.2 |
59.2 |
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| CMV2 |
92 |
77.7 |
58.2 |
72.2 |
63.7 |
58.2 |
72.2 |
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| CMV3 |
104 |
76.7 |
57.2 |
71.2 |
62.7 |
57.2 |
71.2 |
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| CMV4 |
52 |
82.7 |
63.2 |
77.2 |
68.7 |
63.2 |
77.2 |
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| CMV5 |
92 |
77.7 |
58.2 |
72.2 |
63.7 |
58.2 |
72.2 |
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| CMV6 |
96 |
77.4 |
57.9 |
71.9 |
63.4 |
57.9 |
71.9 |
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| THT |
128 |
74.9 |
55.4 |
69.4 |
60.9 |
55.4 |
69.4 |
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| SKW1 |
170 |
72.4 |
52.9 |
66.9 |
58.4 |
52.9 |
66.9 |
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| SKW2* |
182 |
61.8 |
42.3 |
56.3 |
47.8 |
42.3 |
56.3 |
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| SKW3* |
226 |
59.9 |
40.4 |
54.4 |
45.9 |
40.4 |
54.4 |
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| SKW4* |
272 |
58.3 |
38.8 |
52.8 |
44.3 |
38.8 |
52.8 |
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| SKW5 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW6 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW7 |
174 |
72.2 |
52.7 |
66.7 |
58.2 |
52.7 |
66.7 |
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| SKW8 |
222 |
70.1 |
50.6 |
64.6 |
56.1 |
50.6 |
64.6 |
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| SKW9 |
262 |
68.6 |
49.1 |
63.1 |
54.6 |
49.1 |
63.1 |
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| SKW10 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW11 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW12 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW1 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW2 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW3 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| TSW4 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| MTW1 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| MTW2 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| Pumping
Station P2 |
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| Sensitive receiver |
Distance from Construction Activities, m |
Foundation |
Superstructural Works |
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| Excavation, dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
Backfilling,
dB(A) |
Formwork,
reinforcement & fixing, dB(A) |
Concreting,
dB(A) |
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| 122.0 |
102.5 |
116.5 |
108.0 |
102.5 |
116.5 |
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| CMV1
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| CMV2
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| CMV3
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| CMV4
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| CMV5
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| CMV6
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| THT |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW1
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-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW2* |
288 |
57.8 |
38.3 |
52.3 |
43.8 |
38.3 |
52.3 |
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| SKW3* |
256 |
58.8 |
39.3 |
53.3 |
44.8 |
39.3 |
53.3 |
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| SKW4* |
212 |
60.5 |
41.0 |
55.0 |
46.5 |
41.0 |
55.0 |
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| SKW5* |
168 |
62.5 |
43.0 |
57.0 |
48.5 |
43.0 |
57.0 |
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| SKW6 * |
130 |
64.7 |
45.2 |
59.2 |
50.7 |
45.2 |
59.2 |
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| SKW7 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| SKW8* |
260 |
58.7 |
39.2 |
53.2 |
44.7 |
39.2 |
53.2 |
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| SKW9* |
223 |
60.0 |
40.5 |
54.5 |
46.0 |
40.5 |
54.5 |
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| SKW10 |
140 |
74.1 |
54.6 |
68.6 |
60.1 |
54.6 |
68.6 |
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| SKW11 |
120 |
75.4 |
55.9 |
69.9 |
61.4 |
55.9 |
69.9 |
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| SKW12 |
103 |
76.7 |
57.2 |
71.2 |
62.8 |
57.2 |
71.2 |
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| TSW1 |
44 |
84.1 |
64.6 |
78.6 |
70.1 |
64.6 |
78.6 |
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| TSW2 |
118 |
75.6 |
56.1 |
70.1 |
61.6 |
56.1 |
70.1 |
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| TSW3 |
138 |
74.2 |
54.7 |
68.7 |
60.2 |
54.7 |
68.7 |
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| TSW4 |
188 |
71.5 |
52.0 |
66.0 |
57.5 |
52.0 |
66.0 |
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| MTW1 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| MTW2 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
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| Note: |
3 dB(A) facade effect was
added in the calculation |
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--
The noise level at this particular NSR is negligible as it is more
than 300m away from the construction activity. |
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* Assumed 10dB(A) noise attenuation for NSR
which would be totally screened from construction activity |
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Boldface indicate an exceedance of the noise criteria of 75dB(A) for
residential uses and 70 dB(A) for temple and library |
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