Glenbrook Sation REF (pdf 3.15MB) - Transport for NSW - NSW ...

Review of Environmental FactorsGlenbrook commuter car park and interchange upgradeTable 6‐17 Operational Noise GoalsType ofReceiverResidentialTime of Noise Level dBADay 1 ANL 2 RBL 3(period) LA90(15minute)INP CriteriaIntrusiveLAeq(15minute)Criterion forNew Sources(RBL + 5dB)AmenityLAeq(Period)Criterion forNew Sources 4Day 55 37 42 55 n/aEvening 45 33 38 45 n/aNight 40 27 35 5 40 45SleepDisturbanceScreeningCriterionLA1(60sec)(dBA)Note 1:Note 2:OEH Governing Periods ‐ Day: 7.00 am to 6.00 pm, Evening: 6.00 pm to 10.00 pm, Night: 10.00 pm to 7.00 am.ANL Acceptable Noise Level for a Suburban area.Note 3: RBL Rating Background Level from existing environment estimation as described in Table 6‐10.Note 4: Site observations and attended measurements indicated no significant noise generating industrial sources at the receiverlocation hence the Amenity criteria is the same as the ANL unless otherwise stated.Note 5: In accordance with the INP, where the background noise levels is below 30 dBA, a minimum background noise level of 30 dBAhas been adopted for assessment purposes.6.4.5 Potential impacts – operation noiseAcoustic modelling of the proposed commuter car park noise emissions was carried out using themethodology of the Bavarian State Agency for the report Parking Area Noise. The Parking Area Noiseprediction methodology utilises an LAeq based source sound power level that is representative of onecomplete vehicle movement in one hour for normal parking motions (i.e. entering the proposedcommuter car park, searching for a car parking space, open and closing car doors, re‐starting the engineand exiting the proposed commuter car park). Hence the major variables accounted for in thismethodology include the number of vehicle movements, the location of the proposed commuter car parkrelative to noise sensitive receivers and the surface finish (e.g. sealed asphalt, unsealed gravel etc).Ref No: 2260812 47