1 NOISE MONITORING METHODOLGY
1.1 Introduction This document outlines the recommended noise monitoring methodology that should be followed if required during the construction phase of the project and post completion at residents surrounding the converter station. This document forms Appendix 26.4 to Volume 3, Chapter 26 of the Environmental Statement and should be read alongside this chapter.
This document outlines the recommended noise monitoring methodology for the following:
• Noise measurements in order to investigate complaints during the construction of the electrical transmission works and Converter Station; and
• Noise measurements in order to investigate complaints during the operation of the Converter Station.
1.2 Construction Noise Monitoring
1.2.1 Rationale Should complaints be received as a result of noise from the construction of the Cable Route, HDD on the landfall or the construction of the Converter Station, noise measurements will be undertaken to identify whether noise level criteria for significant effect is being exceeded.
The noise level criteria for significant construction noise effect are provided within Volume 3, Chapter 26.
1.2.2 Method
Measurements shall be taken by a suitably qualified acoustician in the vicinity of the property or properties from which the complaint originated. Where access to a property is not granted to undertake such measurements, measurements shall be undertaken at a location that is considered by the suitably qualified acoustician to be representative of noise levels at the property or properties in question.
An initial attended noise survey will be undertaken during conditions representative of the noise causing the complaint for a period of up to an hour.
Should it be considered that a significant impact could be the result of ongoing construction works, further measurements will utilise long-term environmental noise equipment. These further measurements would consist of equipment left unattended in a secure location for a period of up to 15 days in order to determine whether the BS 5228 threshold levels are likely to be exceeded for a month of more or whether the BS 5228 trigger levels are likely to be exceeded for more than 10 days in any 15.
EAOW
Noise Prediction Methodology P41388
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