Noise level monitoring within the Lakes A

 

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What is being monitored?

 
Anticipated Environmental Result:
  • Avoidance of intrusive noise levels.
Monitoring:
  • To undertake triennial noise surveys at key public reserves within the Okareka and Tarawera Policy Areas.

Purpose of monitoring

The Lakes A Zone is a popular recreation area, particularly in the summer season. Noise monitoring at recreation reserves located adjacent to residential areas of the settlement zones helps to gauge whether activities at the reserves are within an acceptable level of noise for residential living, and vice-versa.

Reports available

 

Current trends

Noise monitoring at the interface between residential (settlement) and recreational reserves (sensitive rural) in the Lakes A Zone was carried out during the winter season of 2011, and the summer period 2011/12. Two sites were chosen at each of Lakes Okareka and Tarawera to measure noise levels in general, and in particular the effects of seasonal variation.

 
Table 1. Explanation of noise terminology
Source: Rotorua District Council, 2011
Note: A 0-2 dB difference can be considered ‘imperceptible’ and a 3 dB difference is often considered to be ‘just perceptible’.
 
A summary of findings of the report says;
 
"In the winter there is a tendency for noise to be highest during the daytime period, reducing in the evening, and quietest during the night. The Lakes A Zone noise limits reflect this trend. In the summer noise levels are greater at Kariri Point Reserve and Stony Point Reserve during the evening. This is likely due to an increase in activity in the evening afforded by daylight savings.
 
Average LA10 noise levels (for all sites) were measured to be: 
  • 5 to 10 decibels above the Lakes A zone daytime limit during the summer period.
  • 5 to 17 decibels above the Lakes A zone evening limit during the summer period.
  • 3 to 10 decibels above the Lakes A zone night time limit during the summer period.
However the background noise level (LA95) during both summer and winter, generally aligns with the limits in the Plan."
 
To view the full report click here.
Page reviewed: 17 Dec 2013 12:09pm