Reference Document MCU22/0102 Updated Environmental Noise Assessment (2)

2 Noise Monitoring

2.1      Noise Measurement Methodology
Noise measurements were taken continuously over a two week period commencing Saturday 16th
March 2024. The following information was detailed:
      ➢ Measurements were completed on the site using a Type 1 Sound Level Meter, Rion NL 31
        (s/n 00297846);
      ➢ The sound level meter holds current laboratory certificate of calibration, available upon
        request;
      ➢ The meter was calibrated before and after the measurements and was found to be within
        0.1dB of the reference signal;
      ➢ The meter records both slow and fast time weighted sound levels, along with statistics
        throughout the measurement period, allowing relevant data to be collected;
      ➢ The microphone was fitted with a standard wind screen;
      ➢ During the measurements, the microphone was located at a height of 1.4 metres above the
        ground level and at least 3 metres from reflecting facades (other than the ground plane); as
        such no adjustments have been applied for reflected noise.
Average meteorological conditions at the time, recorded at the Bureau of Meteorology’s Tewantin
site, were:
      ➢ Temperature:                   19.1 – 28.3oC
      ➢ Relative Humidity (avg):       90%
      ➢ Periods of rainfall omitted from the data. Periods of heavy rainfall (ie >10mm in the 24-hour
        period) were noted on 18th, 19th, 22nd, 23rd, 26th 27th and 28th March. Data measured on these
        days has been omitted from the results. Short periods of rainfall have also been omitted
        from the calculations.


2.2      Ambient Noise Monitoring
The results of the noise logging is summarised in Table 2.1. Figures 2.1 to 2.6 present charts showing
the measured noise levels during periods of relatively fine weather.




Ref: 21030929 - 01b                                                                         Page 7 of 28