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

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


2.0        EQUIPMENT AND PROCEDURES

2.1        Measurement Procedures

           Environmental Noise loggers were placed on the site at locations ML1 and ML2. The
           locations were chosen for exposure to the noise related to Church Activity, to traffic noise
           from Ben Lexcen Drive and to capture the overall background noise levels of the site. The
           logger locations are shown on Sketch 2. Noise logging was conducted over the period 22nd to
           29th April (ML2) and 8th to 11th May 2008 (ML1.

2.2        Instrumentation

           The following instruments were used to measure the ambient noise levels:

            ARL-EL 215 No. 2 Environmental Noise Logger (serial number 194660)
            ARL-EL 215 No.1 Environmental Noise Logger (serial number 194442)
            Rion NC-73 Calibrator


           The operation of the sound level measuring equipment was field calibrated before and after
           each measurement session and was found to be within 0.1 dB of the reference signal. All
           instrumentation used in this assessment has a current calibration certificate from a certified
           NATA calibration laboratory.




3.0        AMBIENT NOISE LEVELS

           The typical average ambient noise levels measured at ML2 are presented in Table 1. The
           logger was located adjacent to a private dwelling on Ben Lexcen Drive as there was no secure
           location on the site itself. The location was fully exposed to road traffic noise. The logger was
           located approximately 27m from the running edge of Ben Lexcen Drive. Ambient noise
           during the survey was composed of traffic and insect noise.

                                          Table 1: Measured Ambient Noise Levels ML2
                                                                           Measured Noise Levels1 dB(A)2
                            Time
                                                            LAmax3              LA014              LA105          LAeq6          LA907
            Day: 7 am to 6 pm                                75.6               65.5               58.8            56.4          40.0
            Evening: 6 pm to 10 pm                           67.8               60.5               52.2            49.4          35.0
            Night: 10 pm to 7 am                             65.8               54.9               42.9            44.5          31.3




1 Average noise levels throughout the period, with the exception of LA90 which is the average below the median noise levels for the period.
2 dB(A) decibels, A-weighted
3 LAm ax refers to the maximum a-weighted sound pressure level occurring during the sampling period

4 LA01 for a specified time interval, means the A-weighted sound pressure level that is equalled for 1% of the interval

5 LA10 for a specified time interval, means the A-weighted sound pressure level that is equalled or exceeded for 10% of the interval

6 LAe q for a specified time interval, means the time average A-weighted sound pressure level, within the meaning given by AS1055.1 for the

interval
7 LA90 refers to the noise level exceeded 90% of the time period, commonly referred to as the background noise level




PN 2896 Report June 08 V1.doc| 20 June 2008                                                                                   2 of 8