Scope – Arcus were commissioned by Dawson WAM to carry out an assessment of the construction noise associated with the replacement of an existing wastewater pumping station (WwPS) with a new underground WwPS with an above ground control kiosk and telemetry pole.
Consultation was undertaken with Ards and North Down Borough Council to agree the assessment methodology. It was agreed that the noise assessment should be undertaken according to BS 5228:2009+A1:2014 Code of practice for noise and vibration control on construction and open sites, with background noise monitoring to be undertaken at the closest residential dwelling.
Solution – An assessment of the potential effects of noise during construction was carried out for each phase of the works. This was achieved through the prediction of noise levels based upon the types and number of plant required for each activity, assessed against noise limits derived from pre-construction background noise monitoring. Assessments were undertaken for the closest residential dwelling, and for the impact of noise upon the public open space surrounding the site.
Noise levels were found to be acceptable, subject to specific mitigation measures for certain plant and activities, including piling. Appropriate mitigation measures were recommended, along with general best practice measures for all activities, in order to minimise noise levels as far as practicable.