Newlands Cross Upgrade EIS - European Investment Bank

South Dublin County Council N7 Newlands Cross Upgrade
Environmental Impact Statement
Arup Consulting Engineers
The incorporation of these measures into the fundamental design of the scheme offers a
significant level of noise attenuation to locations within the golf club grounds when compared
against the situation without these measures.
It is also expected that levels will most likely be only slightly higher than the current Do
Minimum levels given the additional attenuation.
Therefore, the proposed road will not have a significant noise impact on the facilities at the
Newlands Golf Club.
8.4 Description of Mitigation Measures
Receiver
Location
Locations R03, R04, R05, R06 and R07
The proposed mitigation for Locations R03, R04, R05, R06 and R07 consists a 1.5m high and
325m long barrier 4 along the northern side of the N7 overpass. The location of this barrier is
shown in Figure 8.4.
With this mitigation measure in place, the predicted results for the 2025 ‘Do Something’
scenario is less than or equal to the Do Nothing values for these five locations. This means
that Condition (b) of the Design Goals (refer to Section 8.1.3) is no longer satisfied, and
therefore the mitigated noise levels satisfy the adopted criteria. The mitigated result is
detailed in Table 8.8 overleaf.
It should be noted that the mitigation measure proposed here is based on the design of the
scheme as presented. Should the contractor propose a modified design, a detailed review of
this mitigation measure in light of the modified design will be required.
Table 8.8: Predicted Noise Levels for Years 2010 and 2025 for 'Do-Minimum' and 'Do-
Something' Scenarios Considering Mitigation Measures for NRA Guidelines
Opening Year 2010 Design Year 2025
Predicted Noise Level Predicted Noise Level
Do
Minimum
Lden
Do
Something
Lden
Mitigation
Required?
Do
Minimum
Lden
Do
Something
Lden
Mitigation
Required?
R01 76 75 No 76 75 No
R02 75 75 No 76 76 No
R03 69 69 No 69 69 No
R04 68 68 No 68 68 No
R05 68 68 No 69 68 No
R06 69 69 No 70 69 No
R07 69 68 No 69 69 No
R08 72 72 No 73 72 No
R09 69 69 No 70 70 No
R10 73 72 No 74 73 No
R11 70 69 No 71 70 No
R12 69 69 No 70 69 No
R13 69 69 No 70 70 No
R14 70 69 No 70 69 No
R15 64 63 No 65 64 No
R16 72 71 No 72 72 No
R17 72 71 No 73 72 No
R18 72 71 No 73 72 No
R19 72 70 No 73 71 No
December 2007 Page 127