Planning Applications PDF 1 MB - Meetings, agendas and minutes

This is based on the elevation comprising insulated steel cladding panels within the
following minimum octave band sound reduction index Rw values:
Frequency 63 125 250 500 1k 2k 4k Hz
Rw 16 20 24 31 35 29 36 dB
4.50 Plant, louvres, inlets and outlets would be attenuated so that the ambient LA90
Noise levels are not increased. This means that, in line with the original development,
noise levels from services systems would not generally exceed the following LAeq
levels when measured at 1m from the plant or louvre:
Area Day Night
General
Locations
65
Laeq
55
Laeq
4.51 The Council's Environmental Health officer has advised that the full details of the
external noise level emitted from plant/ machinery/ equipment and mitigation measures
should be submitted to the local authority for approval, prior to implementation. The
measures would need to ensure that the external noise level emitted from plant,
machinery/ equipment will be lower than the lowest existing background noise level by
at least 10dBA, as assessed according to BS4142:1997 at the nearest and/or most
affected noise sensitive premises, with all machinery operating together at maximum
capacity.
4.52 In terms of noise during the course of construction, a Construction Management
Plan is submitted as part of this application. This document provides discussion of
measures to ensure that the noise impact of construction is mitigated for neighbouring
properties. A condition is recommended to ensure the noise levels during construction
meet the policy requirements noted above.
4.53 With the recommended conditions imposed, it is considered that the amenity of
occupiers of surrounding premises would not be adversely affected by noise from
plant/mechanical installations/ equipment, of from construction, in accordance with
Policy DM H9 of the Development Management Local Plan and SPD Amenity policies
18 and 24.
Transport and Parking
4.54 The transport effect of the proposed development has been assessed against the
existing baseline position (existing shopping centre), which is 171,562m² GFA of retail
and leisure floorspace, and the future baseline position (consented extension of
shopping centre), which is 230,660m² GFA of retail and leisure floorspace. This is
considered to be a robust method of assessment.
4.55 The site has a PTAL score ranging from 5 to 6a using Transport for London's
(TfL's) methodology.
Access
4.56 The proposed development does not include any amendments to the access
arrangements to the Westfield London Shopping Centre.