Newlands Cross Upgrade EIS - European Investment Bank

South Dublin County Council N7 Newlands Cross Upgrade
Environmental Impact Statement
Location S05
Arup Consulting Engineers
The noise environment at this location was dominated by road traffic movements along the
N7. Occasional local vehicle movements were also noted. Noise levels were in the range 63
to 64dB LAeq and 64 to 65dB LA10. The derived Lden at this location is 65dB.
Location S06
The noise environment at this location was dominated by road traffic due to vehicle
movements along the Belgard Road (R113). During the first measurement period a passing
siren was noted. Noise levels were in the range 74 to 76dB LAeq and of the 77 to 78dB LA10.
The derived Lden at this location is 75dB.
Table 8.3: Shortened Measurement Results and Derived LA10(18 hour) and Lden Values
Measured Noise Levels
(dB re.2x10 -5 Survey Location
Reference
Start Time
Pa) LA10(18 hour)
S01
S02
S03
S04
S05
S06
LAeq LA10 LA90
09:37 68 70 65
10:38 68 70 65
11:37 68 70 65
09:58 69 71 66
10:58 70 71 67
11:59 70 72 66
10:16 68 70 66
11:17 68 70 66
12:19 68 69 66
12:57 72 75 67
14:12 74 74 68
15:26 71 73 66
13:20 64 65 61
14:33 64 65 61
15:48 63 64 60
13:46 74 77 64
14:59 76 77 65
16:10 76 78 65
Lden
69 69
70 70
69 69
73 73
64 65
76 75
December 2007 Page 121