080620 FINAL PN 2896 eReport June 08 V1.pdf [As Published] · 132008.1128

                                                                                            SUNRISE BEACH RETIREMENT VILLAGE
                                                                                              GRASSTREE COURT, SUNRISE BEACH
                                                                                                     NOISE IMPACT ASSESSMENT

           The typical average ambient noise levels measured at ML1 are presented in Table 2. The
           logger was located adjacent to the Uniting Church on Grass Tree Court, approximately 10m
           from the façade of the church .

                                            Table 2: Measured Ambient Noise Levels ML1
                                                                               Measured Noise Levels dB(A)
                              Time
                                                               L Amax               LA01               LA10             L Aeq          L A90
             Day: 7 am to 6 pm                                 70.0                 60.3               50.1             49.2           38.1
             Evening: 6 pm to 10 pm                            55.2                 48.1               43.7             42.0           36.3
             Night: 10 pm to 7 am                              54.6                 48.7               45.1             43.5           37.9



           For assessment of Noise Emissions from the development, the minimum values for LA90 and
           averaged values for LAmax will be used as representative of the whole site.

                                           Table 3: Derived Ambient Noise levels
                                                      Averaged maximum Noise                               Minimum background
                              Time                           level dB(A)                                     Noise level dB(A)
                                                                            LAmax                                        LA90
             Day: 7 am to 6 pm                                              72.8                                         38.1
             Evening: 6 pm to 10 pm                                         61.5                                         35.0
             Night: 10 pm to 7 am                                           60.2                                         31.3



4.0        ROAD TRAFFIC NOISE

           Ben Lexcen Drive is the largest road in the area and is not classed as a major road. The
           logged data from the 23 and 24 of April was chosen as being representative of the road traffic
           noise in the area; being free of non traffic noise, e.g. dog barking and weather. The results
           have been averaged to produce the results presented in Table 4 below.

4.1        Measured Noise Levels

                                         Table 4: Measured road traffic noise levels at ML2

                  Road Traffic
                                                       Measured Level dB(A)                             Offset from LA10 (18 hour)
                 Noise Descriptor

                     LA10 (18 hour)8                                 55.7                                            N/A
                       LAeq (day)9                                   55.6                                             -0.1
                      LAeq (night)10                                 49.4                                             -6.2



8 LA1 0 (1 8 hour ) for a specified time interval, means the arithmetic average of 18 individual LA10(1h our) levels measured between 6:00 am and
midnight on the day
9 LAe q (da y) for a specified time interval, means the maximum time average A-weighted sound pressure level, within the meaning given by

AS1055.1, for the interval 6:00 am to 10:00 pm
10 LAe q (ni ght) for a specified time interval, means the maximum time average A-weighted sound pressure level, within the meaning given by

AS1055.1, for the interval 10:00 pm to 6:00 am



PN 2896 Report June 08 V1.doc| 20 June 2008                                                                                         3 of 8