MCU17/0005 - IDAS Application - 113 Marara St Cooroy

   6.        NOISE IMPACT ASSESSMENT
   6.1            Noise Soun:es
   Noise measurements of an existing paintball facility were taken at mango hill under normal
   paintbalI game conditions with 40 people per game. The proposed paintball facility will have a
   maximum of 20 players at anyone time. Sound power level and noise spectrum of the paintball
   activities motorbikes for use in noise modelling. Noise measurements were taken on Saturday 23n1
   April 2016 using a Bruel & Kjaer 2260 noise analyser and two noise loggers located at 60 meters
   from the game area. The results of the noise measurements are given in Table 6.1.1 below and
   Figure 6.1 shows photographs taken during the noise measurements.

   Table 6.1.1 Paintball Game Sound Power levels

                                                                        Sound Power Levels (dB)
              Description
                                                                 at Octave Band Centre Frequencies (Hz)
                                              Descriptor        dBA 63       125   250 500       Ik    2k        4k    8k
                10 people                       LAeq             90    89    88     83     82    82    84        83    77
         1 machine paintball gun                 LAeq            88     84   86     81    85     83        81    79    75
         I machine paintball gun                  LAI            96     92   98     91    93     93        90    89    84
         I hom and starter shout                  LAl            116    93   83     84    98     108       113   107   93

   Note: at a distance of 60m the paintball noise emissions were not tonal but an impulsive penalty of
   5 dB(A) is applied as part of a conservative assessment.




@Alpha Acoustics Pty Ltd                                                                    l'age1Z ofl7
Doc: J 1562 - Noise Assessment - Paintball Field - Cooroy (Rev 2).doc