Approved Noise Impact Assement Document OPW20-0108 2 of 2

            Table 5.2: Background creep requirements of EPP Noise

                                                                                    Permitted Noise Emission
                                       Measured
                                                                                             dB(A)
                                      Background
               Time of Day
                                         Level                 Continuously Operating
                                      LA90 dB(A)                                                      Time Varying Noise
                                                                       Plant
                                                                                                           LAeq,adj,T
                                                                       LA90,T
                 Daytime
               (7am to 6pm)
                                             46                               46                               51
                 Evening
              (6pm to 10pm)
                                            391                               39                               44
                  Night
              (10pm to 7am)
                                            302                               30                               35

            Note 1: The background noise level at ML2 during the evening was measured at LA90 37 dB(A). Given the background
            noise was measured behind a 1.8m high fence, a background noise level of LA90 39 dB(A) as measured at ML1 has been
            used in the assessment which conservatively represents the upper level background noise for residences in Blue Fin Court

            Note 2: The background noise level at ML2 at night was measured at LA90 27 dB(A). Given the background noise was
            measured behind a 1.8m high fence, a background noise level of LA90 30 dB(A) as measured at ML1 has been used in the
            assessment which conservatively represents the upper level background noise for residences in Blue Fin Court
            Sleep Disturbance
            The World Health Organisation (WHO) set out a Sleep disturbance noise criteria in the “WHO
            Guidelines for community noise”. Table 1 of that guideline establishes that sleep disturbance can
            occur inside bedrooms when the maximum noise level is at LAmax 45 dB(A) (10pm to 7am). In
            practice, with a bedroom window open, this internal noise level will be equivalent to an outside
            maximum noise level of LAmax 50 to 55 dB(A) [depending on building construction]. It is noted that
            the LAmax is generally considered equivalent to the LA01, 1 minute.

            Project Specific Noise Criteria
            Considering the criteria discussion above, the project specific noise criteria is summarised in
            Table 5.3.3 below.
            Table 5.3.3: Project Specific Noise Levels
                                                                   Recommended Nosie Limits dB(A)
                                               Continuously Operating
                     Time of Day                                        Time Varying Noise      Short Duration Events
                                                       Plant
                                                                             LAeq,adj,T                 LAMax
                                                       LA90,T
                Daytime and evening
                                                  46 dB(A) L90 (Outdoors)          50 dB(A) Leq (Outdoors)              N/A
                   (7am to 10pm)
                Daytime and evening
                                                  44 dB(A) L90 (outdoors)          45 dB(A) Leq (Outdoors)              N/A
                  (7am to 10pm) 1
                     Night-time
                                                35 dB(A) L90 (Outdoors)            35 dB(A) Leq (outdoors)   50 dB(A) L90 (Outdoors)
                  (10pm to 7am) 1
              When Commercial in use                                               50 dB(A) Leq (Outdoors)

            Note 1: A conservative 5 dB(A) inside to outside building façade correction has been applied to dwellings and to
            commercial uses.




        © Alpha Acoustics Pty Ltd                                                                      Page 13 of 25
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           Set J2192 - Noise Impact Assessment - BP Noosaville (Rev 1).docx
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Version: 1, Version Date: 22/07/2019