Assessment - Draft. Assessment - Draft. Ripley Valley Amex SUCE Development Stages 42A ROL Phase

Transcription

1 Road Traffic Traffic Noise Noise Impact Impact Assessment - Draft Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase Ripley Valley Amex SUCE Development Stages 42A ROL Phase A038_ Prepared for AMEX Corporation April 2017

2 Document Information Prepared for AMEX Corporation Project Name File Reference PR_A038_790147_Stages 42A_01JM.docm Job Reference A038_ Date April 2017 Contact Information Cardno QLD Pty Ltd Trading as Cardno ABN L11 Green Square North Tower 515 St Pauls Terrace Fortitude Valley QLD 4006 Telephone: Facsimile: International: julie.mcdonagh@cardno.com.au Document Control Versio n Date Author Author Initials Reviewer 01 10/04/2017 Draft Liam McDonagh LM Julie McDonagh JM Reviewer Initials Cardno Copyright in the whole and every part of this document belongs to Cardno and may not be used, sold, transferred, copied or reproduced in whole or in part in any manner or form or in or on any media to any person other than by agreement with Cardno. This document is produced by Cardno solely for the benefit and use by the client in accordance with the terms of the engagement. Cardno does not and shall not assume any responsibility or liability whatsoever to any third party arising out of any use or reliance by any third party on the content of this document. April 2017 Cardno ii

3 Executive Summary This report assesses the predicted road traffic noise, from the Centenary Highway, and other nearby local roads impacting on the proposed Ripley Valley (AMEX SUCE) development. This updated version has been produced to address the Reconfiguration of Lot (ROL) phase for Stage 42A. This report assesses the predicted road traffic noise impact for the 10 year planning horizon after completion of the project in 2031, in accordance with the relevant statutory assessment criteria for road traffic noise impact. Previous versions of the acoustic assessment which included this stage, had included the option of acoustic barriers along internal roads within the site, as a form of noise control. In accordance with the development approval conditions for the project for earlier stages, the option of acoustic barriers on internal roads has been removed from the assessments for all stages of the development. Terrain elevation data for the subject site was updated with the finished earthworks plan for the site (issued March 2017). The centre of lot spot heights, are tabulated in the results section (Section 7.3). This revision has been updated to reflect the revised Lot Layout plan received in March It should be noted that the earthworks levels reflect finished bench levels for stage 42A. The assessment has been carried out and recommendations have been developed in general accordance with Neighbourhood Master Plan (NMP) strategies and thereby addresses relevant State and Local Government strategies and policies, including the following: Ipswich City Council (Ripley Valley SUCE Stages Decision Notice). Economic Development Queensland (EDQ) (Ripley Valley SUCE stage 1 noise conditions) Relevant Australian Standards Assessment Conclusions The following conclusions apply to this assessment: The Centenary Motorway located along the northern boundary of the development has been identified to be the primary source of noise predicted to impact on the overall Ripley Valley (AMEX SUCE) development, along with Ripley Road and some of the proposed new internal roads. However, the primary road traffic noise sources impacting on the assessed site, Stage 42A are Bayliss Road and the South East Arterial Road. Residential Lots within the Amex SUCE Stage 42A have been identified to be in excess of 200 metres from the Centenary Highway at the nearest point to the proposed development therefore QDC MP 4.4 criteria has not been considered applicable to this assessment. All the modelling conclusions listed below assume that the 1.8 metre high barrier previously designed for Stages 30 and 31 is constructed along the southern boundary of the site as shown in Figure 7-1. Modelling indicates that 4 Lots (1296, 1297, 1298 and 1402) will require Category 3 construction for the upper floors if constructed with more than one level, with the remainder of the upper floors within the modelled stages requiring Category 2 construction. Refer to Appendix C for more information regarding the requirements of category 3 construction, and specific design review requirements associated with this development. April 2017 Cardno iii

4 Modelling indicates, Australian Standard AS3671 building Category 2 construction will be required for the ground floor of dwellings on all other Lots located within Stages 42A. The requirements of AS 3671 Category 2 construction are explained further in Section 8 and Appendix C of this report. It is not possible to accurately predict L Amax noise levels from road traffic noise. Therefore this has not been assessed. L Amax noise level will be dependent on traffic types proposed to use the development s internal roads. We would expect that given the nature of the road traffic, being low speed local access traffic, the L Amax noise levels from traffic pass-bys are likely to be in accordance with other similar developments in Queensland. It is recommended that the following acoustic design principles be taken into account when considering the overall layout, building orientations and shielding affects: The building to be set back from the road as far as possible; The building to shape away from the road where possible; The building to shield courtyards and open space areas from the road; and Noise sensitive spaces, such as bedrooms, to be shielded from noise by positioning less sensitive spaces, such as the garage, bathrooms and laundry, closer to the road. Where a dwelling (refer to Table 7-3) is required to have Category 2 construction in accordance with this report, and the predicted night-time noise level is 57 db(a) or greater, the proposed design should be checked by a qualified acoustic consultant, should any lightweight facades or facades with large areas of glazing be proposed. For Lots with predicted noise levels less than 57 db(a), standard construction will be acceptable provided there are no single layer lightweight or all glass facades proposed for the dwelling, with no further acoustic review required, to satisfy the requirements of this report. Where category 3 construction is required (refer to Table 7-3), the proposed design should be reviewed for compliance by a qualified acoustic consultant. Please refer to Cardno letter pl_a038_790147_02_category 2 clarification dated 25 November 2015 (relevant extract is included in Appendix C of this report) for details of the required process to determine the level of dwelling treatment and review required. April 2017 Cardno iv

5 Table of Contents Executive Summary Glossary and Abbreviations iii vii 1 Development Proposal 8 2 Existing Noise Environment Noise Monitoring Locations 9 3 Existing Noise Conditions Environmental Monitoring Conditions Equipment Calibration Measurement Parameters Measurement Results 11 4 Noise Assessment Criteria Statutory Requirements Development Approval (Stages 10 to 54) Condition 14, Ipswich City Council Economic Development Queensland (formerly Urban Land Development Authority) Queensland Development Code (QDC) MP 4.4 Buildings In A Transport Noise Corridor Australian Standards 18 5 Design Benchmarks External Road Traffic Noise 20 6 Noise Assessment Methodology Modelled Scenarios Noise Model Inputs & Assumptions General Modelling Inputs Traffic Flow Information Additional Assumptions Noise Model verification 24 7 Road Traffic Noise Impact Assessment Modelled Scenarios Modelled Existing Noise Barrier Predicted 2031 Traffic Noise Levels EDQ Assessment 26 8 Recommendations 30 9 Conclusions 31 Tables Table 2-1 Summary of Monitoring Locations and Equipment Information 9 Table 3-1 Summary of Averaged Noise Levels from Noise Loggers (Centenary Highway) 16 Table 3-2 Measured Average LA10, 1hr (averaged over 7 day period) noise levels at logger locations. 16 Table 4-1 Summary of EDQ Noise Assessment Criteria 17 Table 4-2 Recommended design internal noise levels AS/NZS 2107: Table 5-1 Summary of Adopted Road Traffic Criteria 20 April 2017 Cardno v

6 Table 6-1 Noise Modelling inputs 21 Table Road Traffic modelling inputs 22 Table Modelling Inputs 24 Table 6-4 Modelling Verification Results 24 Table 7-1 Modelling Summary 25 Table 7-2 LA10 to LAeq Conversion Factors for Day and Night 26 Table 7-3 EDQ, AS3671 Assessment 2031 Predicted Noise & Required Category Based on Criteria for Inside Bedrooms and Living areas of a Proposed Dwelling - with and Without Barriers 27 Figures Figure 1-1 Site Layout & Surrounding Topography Stage 42A 8 Figure 2-1 Noise Logger Locations 10 Figure 3-1 Site Ambient Noise Levels logger 1 12 Figure 3-2 Site Ambient Noise Levels logger 2 12 Figure 3-3 Site Ambient Noise Levels logger 3 13 Figure 3-4 Site Ambient Noise Levels logger 4 13 Figure 3-5 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 1 14 Figure 3-6 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 2 14 Figure 3-7 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 3 15 Figure 3-8 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 4 15 Figure hour ultimate traffic map of the proposed development Stages 42A 23 Figure A Existing Road Traffic Noise Contours 33 Figure A2 EDQ, AS 3671 Assessment Ground Floor Noise Contours Day LAeq 34 Figure A4 EDQ, AS 3671 Assessment First Floor Noise Contours Day LAeq 35 Figure A6 EDQ, AS 3671 Assessment Ground Floor Noise Contours Night LAeq 36 Figure A8 EDQ, AS 3671 Assessment First Floor Noise Contours Night LAeq 37 Figure B Traffic Flow Data 39 Figure C1 Method to Determine the Level of Required Acoustic Treatment & Review 42 April 2017 Cardno vi

7 Glossary and Abbreviations Term A-weighted Level Ambient Sound Background Sound Level Decibel, db L 90, L 10 etc. L Abg, T L Aeq, T Sound Pressure Level, Lp, db, of a sound Sound Power Level, Law, db of a source Definition As per db(a) defined below. Of an environment: the all-encompassing sound associated with that environment, being a composite of sounds from many sources, near and far. The average of the lowest levels of the sound levels measured in an affected area in the absence of noise from occupants and from unwanted external ambient noise sources. Unit of acoustic measurement. Measurements of power, pressure and intensity may be expressed in db relative to standard reference levels. A statistical measurement giving the sound pressure level which is exceeded for the given percentile of an observation period, i.e. L 90 is the level which is exceeded for 90 percent of an observation period. L 90 is commonly referred to as a basis for measuring the background sound level. The A-weighted background sound level measured over a time interval T. Equivalent continuous A-weighted sound pressure level. This is the value of the A-weighted sound pressure level of a continuous steady sound that, within a measurement time interval T, has the same A-weighted sound energy as the actual time-varying sound. A measurement obtained directly obtained using a microphone and sound level meter. Sound pressure level varies with distance from a source and with changes to the measuring environment. Sound pressure level equals 20 times the logarithm to the base 10 of the ratio of the sound pressure to the reference sound pressure of 20 micro Pascals. Sound power level is a measure of the sound energy emitted by a source, does not change with distance, and cannot be directly measured. Sound power level of a machine may vary depending on the actual operating load and is calculated from sound pressure level measurements with appropriate corrections for distance and/or environmental conditions. Sound power level is equal to 10 times the logarithm to the base 10 of the ratio of the sound power of the source to the reference sound power of 1 picosat. April 2017 Cardno vii

8 1 Development Proposal The AMEX SUCE Stage 42A development is under the control of the Economic Development Queensland (EDQ) formerly the Urban Land Development Authority. A new internal sub-arterial road will run from north to south through stages 26 and 27 and the sites will be bounded to the south by Bayliss Road and the South East Arterial (SEA)). The sites are located remotely from the Centenary highway and other major roads impacting the Ripley Valley Site. Figure 1-1 below displays the site location of stage 42A relative to the surrounding area. Figure 1-1 Site Layout & Surrounding Topography Stage 42A Stage 42A April 2017 Cardno 8

9 2 Existing Noise Environment The proposed site is located in a predominantly rural area on a green field site. With the exception of the Centenary Highway, the existing roads (some of which are unsealed) do not reflect, based on any natural growth factors, the future traffic flows proposed for 2031, as the majority of road traffic growth in the area will be due to the development itself. 2.1 Noise Monitoring Locations Continuous long term noise monitoring was carried out at 4 locations near the proposed site. The noise logging was carried out using 4 unmanned Iron NL 21 noise loggers configured to measure 15-minute statistical noise levels between the 23 and 30 March The monitoring locations, monitoring period, equipment type and serial number used, are detailed below in Table 2-1. Table 2-1 Summary of Monitoring Locations and Equipment Information Logger Location Location Monitoring Dates Noise Logger Type & Serial Number 1 Approximately 3.5m from the Centenary Highway April 2012 Iron NL Approximately 4m from Ripley Road April 2012 Iron NL m from Ripley Road on Bayless Road April 2012 Iron Nl Approximately 800m from Centenary Highways on Abrahams Road April 2012 Iron Nl Logger 1 was placed approximately 3.5 metres from the westbound carriageway of the Centenary Highway east of Ripley Road, adjacent to the northern site boundary. Logger 2 was placed approximately 4 metres from Ripley Road near the corner of Ripley Road and Barrams Road. Logger 3 and 4 were placed on Abrahams Road and Bayless Road respectively. Logger 3 and 4 were located on currently unsealed roads with little to no exposure to local traffic. Logger 3 on Bayless Road, was located approximately 400 metres from Ripley Road. Figure 2-1 below shows the location of the noise monitoring devices. Logger 4 on Abrahams Road, was located approximately 800 metres from the Centenary Highway. April 2017 Cardno 9

10 Figure 2-1 Noise Logger Locations Logger 1 Logger 2 Logger 4 Logger 3 April 2017 Cardno 10

11 3 Existing Noise Conditions 3.1 Environmental Monitoring Conditions The environmental conditions, obtained from the Amberley weather station located 13 km from the site, noted during the measurement period were as follows: Conditions: Wind: Fine 2 24 km/h from a WSW / ESE direction Humidity: 38 83% Temperature: Range between o C 3.2 Equipment Calibration Calibration of the sound monitoring equipment was conducted before and after the measurement period, with a variance of less than + / - 0.5dB recorded. 3.3 Measurement Parameters As environmental noise varies with time, the use of statistical descriptors is necessary to understand and describe these variations. For road traffic noise these descriptors are further classified for day time (6am - midnight). For environmental noise, the assessment period for day time is further split into day (7am 6pm) and evening (6pm 10pm). A-weighted statistical levels are used to describe ambient noise levels. The common descriptors used to describe environmental noise are described as follows: L Amax: L A1: L A10: L A90 : the A-weighted maximum noise level measured during the measurement period. the A-weighted noise level exceeded for 1% of the measurement period. the noise A-weighted level exceeded for 10% of the measurement period, generally referred to as the average maximum sound pressure level. the A-weighted noise level exceeded for 90% of the measurement period, generally referred to as the background noise level (refer AS ). L Aeq : the equivalent continuous noise level over the measurement period, generally referred to as the energy averaged sound pressure level over the measurement period. 3.4 Measurement Results Graphical representation of the measured ambient noise levels are presented in Figure 3-1 to Figure 3-8. Figure 3-5 to Figure 3-8 detail typical 24 hour noise levels averaged over the monitoring period. April 2017 Cardno 11

12 Figure 3-1 Site Ambient Noise Levels logger Logger 1 - Ambient Noise Levels Measured at Centenary Highway (east of Ripley Road), Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA /03/2012 0:00 29/03/ :00 29/03/2012 0:00 28/03/ :00 28/03/2012 0:00 27/03/ :00 27/03/2012 0:00 26/03/ :00 26/03/2012 0:00 25/03/ :00 25/03/2012 0:00 24/03/ :00 24/03/2012 0:00 23/03/ :00 Figure 3-2 Site Ambient Noise Levels logger Logger 2 - Ambient Noise Levels Measured at Ripley Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA /03/ :45 29/03/ :45 28/03/ :45 28/03/ :45 27/03/ :45 27/03/ :45 26/03/ :45 26/03/ :45 25/03/ :45 25/03/ :45 24/03/ :45 24/03/ :45 23/03/ :45 23/03/ :45 April 2017 Cardno 12

13 Figure 3-3 Site Ambient Noise Levels logger Logger 3 - Ambient Noise Levels Measured at Abrahams Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA /03/ :30 23/03/ :30 24/03/2012 0:30 24/03/2012 6:30 24/03/ :30 24/03/ :30 25/03/2012 0:30 25/03/2012 6:30 25/03/ :30 25/03/ :30 26/03/2012 0:30 26/03/2012 6:30 26/03/ :30 26/03/ :30 27/03/2012 0:30 27/03/2012 6:30 27/03/ :30 27/03/ :30 28/03/2012 0:30 28/03/2012 6:30 28/03/ :30 28/03/ :30 29/03/2012 0:30 29/03/2012 6:30 29/03/ :30 29/03/ :30 30/03/2012 0:30 30/03/2012 6:30 Figure 3-4 Site Ambient Noise Levels logger Logger 4 - Ambient Noise Levels Measured at Bayliss Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA /03/ :30 23/03/ :30 24/03/2012 0:30 24/03/2012 6:30 24/03/ :30 24/03/ :30 25/03/2012 0:30 25/03/2012 6:30 25/03/ :30 25/03/ :30 26/03/2012 0:30 26/03/2012 6:30 26/03/ :30 26/03/ :30 27/03/2012 0:30 27/03/2012 6:30 27/03/ :30 27/03/ :30 28/03/2012 0:30 28/03/2012 6:30 28/03/ :30 28/03/ :30 29/03/2012 0:30 29/03/2012 6:30 29/03/ :30 29/03/ :30 30/03/2012 0:30 30/03/2012 6:30 April 2017 Cardno 13

14 Figure 3-5 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 1 Logger 1 - Averaged Ambient Noise Levels Measured at Centenary Highway (east of Ripley Road), Ripley, Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA90 Figure 3-6 Typical 24 Hour Averaged Site Ambient Noise Levels Logger Logger 2 - Averaged Ambient Noise Levels Measured at Ripley Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA90 April 2017 Cardno 14

15 Figure 3-7 Typical 24 Hour Averaged Site Ambient Noise Levels Logger Logger 3 - Averaged Ambient Noise Levels Measured at Abrahams Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA90 Figure 3-8 Typical 24 Hour Averaged Site Ambient Noise Levels Logger Logger 4 - Averaged Ambient Noise Levels Measured at Bayliss Road, Ripley Between 23 and 30 March Sound Pressure Level db(a) LAeq LAmax LA10 LA90 April 2017 Cardno 15

16 The following tables demonstrate the measured noise levels for the daytime, evening and night-time periods at each logger location. Table 3-1 Summary of Averaged Noise Levels from Noise Loggers (Centenary Highway) Logger Location L A10, db(a) L A90. db(a) L Aeq, db(a) 7am- 6pm 6pm- 10pm 10pm- 7am 7am- 6pm 6pm- 10pm 10pm- 7am 7am- 6pm 6pm- 10pm Logger 1 (Centenary Highway) Logger 2 (Ripley Road) Logger 3 (Abrahams Road) Logger 4 (Bayliss Road) pm- 7am Table 3-2 Measured Average LA10, 1hr (averaged over 7 day period) noise levels at logger locations. Measured LA10 1hr Noise Level,dB(A) Measured LA10 1hr Noise Level db(a) Time Period Logg er 1 Logger 2 Logger 3 Logger 4 Time Period Logg er 1 Logger 2 Logger 3 Logger 4 00:00-01: :00-13: :00-02: :00-14: :00-03: :00-15: :00-04: :00-16: :00-05: :00-17: :00-06: :00-18: :00-07: :00-19: :00-08: :00-20: :00-09: :00-21: :00-10: :00-22: :00:11: :00:23: :00-12: :00-00: April 2017 Cardno 16

17 4 Noise Assessment Criteria Based on our understanding of the development, we have included the following in this assessment: Road traffic noise impact on the development site from proposed roads within the SUCE development Road traffic noise impact from Bayliss Road / the SEA 4.1 Statutory Requirements Development Approval (Stages 10 to 54) Condition 14, Ipswich City Council The Development Application Decision Notice for Stages 10 to 54 issued by Ipswich City Council on 9 March 2015, provides the following condition with respect to noise impacting on the site: Noise Management (a) Submit to DSDIP PDA Development Assessment an updated version of the Road Traffic Noise Impact Assessment Ripley Valley Amex SUCE Development ROL Phase (Project No. A038_790147) prepared by Cardno and dated August The updated report shall include the final lot layout, terrain elevation, traffic counts along with a reduced acoustic barrier to a maximum height of 1.8 metres from finished ground level (1). The updated report must outline assessment and mitigation strategies to be considered in the construction of dwellings to meet the appropriate acoustic attenuation standards for internal noise only. The proposed barrier works must include interface works to roads, permit pedestrian access along and between road reserves and, unless otherwise approved in writing by DSDIP PDA Development Assessment, not extend for the length of any parks or drainage reserves and must include landscaping between the barrier and constructed / future roads. (1) This refers to the designed noise barrier located along the boundary between the SUCE site and Bayliss Road / SEA Economic Development Queensland (formerly Urban Land Development Authority) As part of Stage 1 of the Ripley Valley development, noise impact assessment criteria was established by the EDQ and as such, the criteria has been adopted for the entire project. The EDQ criteria are as follows: Table 4-1 Summary of EDQ Noise Assessment Criteria Measurement Location Inside bedrooms of a proposed dwelling house, multiple dwelling or accommodation unit. Inside living rooms of a proposed dwelling house, multiple dwelling or accommodation unit. Design Level Road Traffic Noise Criteria (a) Average LAmax (10pm-6am) not greater than 50dB(A), and (b) LAeq(1hr)(10pm-6am) not greater than 35dB(A) LAeq(1hr)(6am - 10pm) not greater than 45dB(A) April 2017 Cardno 17

18 4.1.3 Queensland Development Code (QDC) MP 4.4 Buildings In A Transport Noise Corridor Residential dwellings constructed near designated transport corridors (i.e. the Centenary Highway) are required to comply with Queensland Development Code Mandatory Part Buildings in a Transport Noise Corridor (QDC MP 4.4). QDC MP 4.4 specifies acoustic treatments based upon a noise category. Amex SUCE Stage 42A is located in excess of 200 metres of the Centenary Highway. Therefore QDC MP 4.4 criteria is not applicable to this assessment Australian Standards The following Australian Standards provide criteria and methodology that has been adopted in this assessment. Australian Standard AS1055.1:1997 Acoustics Description and measurement of environmental noise Australian Standard AS/NZS 2107:2000 Recommended design sound levels and reverberation times for building interiors. Australian Standard AS 2702:1984, Methods for the Measurement of Road Traffic Noise. Australian Standard AS3671:1989, Acoustics Road Traffic Noise Intrusion Building Siting & Construction AS/NZS 2107:2000 Table 4-2, referenced from the Australian Standard AS/NZS 2107:2000 states the following guidelines for internal sound levels in a wide range of buildings and provides internal noise guidelines for residential buildings in areas that are located near major roads. Table 4-2 Recommended design internal noise levels AS/NZS 2107:2000 Type of occupancy/activity Recommended design sound level, Leq, db(a) Satisfactory Maximum 7 RESIDENTIAL BUILDINGS Houses & apartments near major roads Living areas Sleeping areas Work areas Apartment common areas (e.g. foyer, lift lobby AS3671:1989 AS 3671 provides methods to determine the required Traffic Noise Reduction and the types of construction required to achieve this reduction. The standard references the internal design sound levels listed in AS/NZS In accordance with Clause 3.2 of AS3671, the worst case Traffic Noise Reduction (TNR) can be calculated and associated category construction adopted. The required categories are defined as follows: Category 1. Standard construction; openings, including open windows and doors may comprise up to 10% of the exposed facade. TNR of approximately 10 db(a) is expected Category 2. Standard construction, except for lightweight elements, such as fibrous cement, or metal cladding, or all glass facades. Windows, doors and other openings must be closed. TNR of approximately 25 db(a) is expected. April 2017 Cardno 18

19 3.2.3 Category 3. Special construction, chosen in accordance with Clause 3.4. Windows, doors and other openings must be closed. TNR between 25 and 35 is expected Category 4. TNR greater than 35 db(a) is required; special acoustic advice should be sought. April 2017 Cardno 19

20 5 Design Benchmarks 5.1 External Road Traffic Noise Table 5-1 below, summarises the adopted criteria for this development. Table 5-1 Summary of Adopted Road Traffic Criteria Assessment Descriptor Measurement Location Criteria Reference Relevant Noise Limit, db(a) LAeq, 1hr (6am-10pm) Inside living rooms of a proposed dwelling house, multiple dwelling or accommodation unit. EDQ 45 db(a) (Internal) LAmax, (10pm-6am) LAeq, (10pm-6am) Inside bedrooms of a proposed dwelling house, multiple dwelling or accommodation unit. EDQ a) LAmax, 10pm-6am not greater than 50dB(A) b) LAeq, 10pm-6am not greater than 35dB(A) April 2017 Cardno 20

21 6 Noise Assessment Methodology Computer modelling has been undertaken for the development site using SoundPLAN 7.4 computer modelling software in order to assess predicted noise impact onto the development from road traffic on the Centenary Highway, and existing surrounding local roads located near to the site. The road traffic data has been used to generate a computer model for the year 2031 which has then been assessed in accordance with the relevant criteria: Existing 3D topography of the site, surrounds and nearby road alignments supplied by Cardno. Proposed Site topography provided by Cardno. Road traffic flows, year 2031 Centenary Highway, and surrounding local roads. Assumed road traffic speeds, and heavy vehicles as detailed below in Table 6-2. DGA road surface on all modelled roads 6.1 Modelled Scenarios The following scenarios were modelled using SoundPLAN 7.4 computer noise modelling software. SoundPLAN 7.4 is based on Queensland Department of Main Roads (TMR) approved Calculation of Road Traffic Noise (CoRTN) algorithms: 1. Existing (2012) verification road traffic noise model, based on the modelling inputs supplied for 2010 constructed for modelling verification purposes. 2. Predicted road traffic noise model based on the modelling inputs supplied for the ultimate year 2031, with a 1.8 metre barrier (designed road traffic noise impacting on previous stages refer to the acoustic report for Stage 20-32). This model included +2.5 db(a) facade correction added, and -1.7 db(a) CoRTN correction factor for Australian Conditions added. 6.2 Noise Model Inputs & Assumptions General Modelling Inputs Table 6-1 details the traffic input data used for modelling the existing scenario. Table 6-1 Noise Modelling inputs Input Parameter Ground Elevation Geometry Road Alignment Provided by Cardno Civil Provided by Cardno Civil Input Date/Source Reference Predicted Traffic Flow Data Provided by Cardno Traffic and detailed in Table 6-2. Road Traffic Speeds Road Surface Type Ground Absorption Assumed as posted for the Centenary Highway, and local roads Modelling has assumed a pavement surface of Dense Grade Asphalt indicating a correction factor of 0 db(a) (with reference to Queensland Department of Transport & Main Roads Transport Noise Management Code of Practice (TMR TNM CoP2013) to be applied to all modelling scenarios Assumed 100% soft ground absorption surfaces between road and receivers April 2017 Cardno 21

22 Input Parameter Facade Reflection Correction to CoRTN for Façade Corrected Australian Conditions Receiver Height Input Date/Source Reference +2.5 db(a) applied to prediction models, as all receivers are located at facades of receiver db(a) CoRTN correction for Australian conditions (with reference to TMR TNM CoP2013) Assumed to be 1.8 & 4.6 metres above ground for ground and first floors respectively as required by the TMR TNM CoP Traffic Flow Information The following road traffic flow model inputs were obtained from Cardno: Table Road Traffic modelling inputs Input Date/Source Reference Input Parameter Centenary Highway Ripley Road (section north) Ripley Road (section south) Barrams Road *Various New Local Roads SUCE Bayliss Road / SEA Traffic speed 100 km/h 80 km/h 80km/h 60 km/h 60 km/h 60 km/h Traffic flow: AADT 62,929 30,297 31,277 21,733 2,000-3,500 2, ,350 % Heavy Vehicles 8% 4% 4% 4% 4% 4% *Figure 6-1 below, illustrates the 24 hour ultimate traffic map for Stages 42A and Appendix B presents the 2031 traffic flows for the entire development. April 2017 Cardno 22

23 Figure hour ultimate traffic map of the proposed development Stages 42A Bayliss Road Stage 42 The South East Arterial (SEA) Additional Assumptions Additional modeling assumptions include the following: Noise levels have been predicted for 1st and 2nd floor receptors to allow for accommodation of 2 storey dwellings on the site. Buildings have not been included in the modelling as the locations of the dwellings are not known at time of preparation of this report. In addition, receiver points used to calculate building category requirements have been located at the closest practical point to the noise creating roads. This report therefore, without shielding provided by site dwellings, provides a conservative assessment of predicted road traffic noise impact. Modelling has included the previously designed road traffic noise barrier located to the south of the Stages 30 and 31 site along the site boundary with the SEA, at 1.8 metres high. April 2017 Cardno 23

24 6.3 Noise Model verification An existing scenario model was set up using SoundPLAN 7.4 and spot receiver calculations were run for each of the four noise monitoring locations described in Section 3 of this report. A correction factor of -0.7 db(a) was applied to the modelled results in accordance with the CoRTN correction for Australian Conditions for free field measurements. The modelled results were then compared to the measured results to determine whether the model was verified. The following existing road traffic flow model inputs were obtained from Cardno Civil. Table Modelling Inputs Input Parameter Centenary Highway Ripley Road Traffic speed 100 km/h 60km/h Traffic flow: AADT 5, % Heavy Vehicles 8% 4% A comparison of the modelled and measured values is shown below in Table 6-4. Table 6-4 Modelling Verification Results Logger Location Predicted, L A10 18hr db(a) Measured, L A10 18hr db(a) Difference, db(a) Logger 1 Centenary Highway Logger 2 Ripley Road Logger 3 Bayliss Road (1) Logger 4 Abrahams Road (1) The measured level at logger 3 on Bayliss Road was 6 db(a) higher than the predicted level at the same location within the model. Bayliss Road is an unsealed road used to access a small number of rural properties. Traffic flows for this type of road were unavailable at the time of preparation of this report. It may be possible that the higher measured noise level at this location may be due to local traffic on Bayliss Road or other non-traffic related noise sources. Review of the noise charts indicates continuous short terms high level noise spikes. This type of noise is generally caused by crows or insects. Abrahams Road (logger 4) is also an unsealed road however the fact that it is closer to the Centenary Highway, which therefore provides a higher noise contribution, as well as its lack of access to local properties, may account for the increased accuracy of the modelled result, when compared to those measured. The same noise profile indicating possible high levels of insect and/ or crow noise do not appear to occur at this site. April 2017 Cardno 24

25 7 Road Traffic Noise Impact Assessment 7.1 Modelled Scenarios Ultimate 2031 traffic noise predictions were modelled using the verified SoundPLAN 7.4 computer noise model for 1 and 2 storey receivers. Detailed noise contour maps were produced in order to identify road traffic noise affected lots based on relevant assessment criteria. Lots deemed to exceed the assessment criteria were further reviewed in order to investigate appropriate mitigation measures to control noise exceedance. Stage 42A has been identified to be in excess of 200 metres from the Centenary Highway therefore these lots have been assessed against the EDQ criteria. For assessment against EDQ criteria, road traffic noise has been assessed against the most stringent EDQ internal night-time criteria of L Aeq, (10pm-6am) not greater than 35 db(a), for both ground and first floors to provide a conservative assessment. A summary of the modelling is detailed as follows: Table 7-1 Modelled Scenario Modelling Summary Year Floor Assessment Criteria Basis Description Existing road traffic noise contours (extrapolated from 2010 road traffic flow data) Ground EDQ / AS3671 Predicted road traffic noise contours for inside bedrooms and living areas of a proposed dwelling (Stage 42A) First EDQ / AS3671 Predicted road traffic noise contours for inside bedrooms and living areas of a proposed dwelling (Stage 42A) 7.2 Modelled Existing Noise Barrier A road traffic noise barrier located as shown in Figure 7-1 has previously been proposed to the south of the Stages 30 and 31 sites along the site boundary with the SEA, at 1.8 metres high. The location of this barrier has been shown below in Figure 7-1 for information. Barriers have not been modelled or designed elsewhere for internal roads within the site, as we understand that a barrier is not in accordance with the planning intent for internal roads within this development. Therefore building treatments are recommended for the affected Lots, and formal external living spaces (such as patios or balconies) are recommended to be located at opposite façade to those where external living space criteria is exceeded due to exposure to road traffic noise. April 2017 Cardno 25

26 Figure 7-1 Location of Previously Designed Noise Barrier for Stages Noise Barrier 7.3 Predicted 2031 Traffic Noise Levels EDQ Assessment CoRTN Modelling algorithms such as those used in SoundPLAN predict a L A10,18hr road traffic noise level rather than the required L Aeq,18hr and L Aeq,1hr noise level specified in the EDQ criteria. To determine the predicted daytime L Aeq noise levels for assessment the EDQ criteria, a correction factor of -3 db(a) was applied in accordance with the requirements of AS There is no statutory recommended correction factor to convert L A10,18hr to L Aeq, 8hr (10pm to 6am). However, review of the logger data located nearest to the Centenary Highway indicates a 7 db(a) difference between this parameter and the L A10, 18hr for the existing scenario. Therefore the following correction factors were applied to the modelling to determine L Aeq values. Table 7-2 LA10 to LAeq Conversion Factors for Day and Night Time Period Year Basis (Day) 6 am to 10pm LAeq,1hr = LA10,18hr 3 db(a) Recommended in AS 3671 (Night) 10pm to 6 am LAeq,8hr = LA10,18hr 7 db(a) Review of current logger data The results of noise modelling are displayed below in Table 7-3. April 2017 Cardno 26

27 Table 7-3 EDQ, AS3671 Assessment 2031 Predicted Noise & Required Category Based on Criteria for Inside Bedrooms and Living areas of a Proposed Dwelling - with and Without Barriers Lot Centre of Lot RL, m Floor Level LA10, 18h Predicted External Road Traffic Noise Level With No Barrier, db(a) Day LAeq,1h Night LAeq,1h AS:3671 Category Required Stage 42A Ground First Ground First Ground First First First First First First First First First First First First First Ground First Ground First Ground First Ground April 2017 Cardno 27

28 Lot Centre of Lot RL, m Floor Level LA10, 18h Predicted External Road Traffic Noise Level With No Barrier, db(a) Day LAeq,1h Night LAeq,1h AS:3671 Category Required First Ground First Ground First Ground First Ground First Ground First Ground First First First First First First Ground First First First First First First First First Ground April 2017 Cardno 28

29 Lot Centre of Lot RL, m Floor Level LA10, 18h Predicted External Road Traffic Noise Level With No Barrier, db(a) Day LAeq,1h Night LAeq,1h AS:3671 Category Required First First First First First Ground First Ground First Ground First April 2017 Cardno 29

30 8 Recommendations To ensure internal noise levels within habitable rooms of future dwellings, comply with the internal design benchmarks (Section 5), future dwellings in Stages 42A & 53 to 45 should be designed and constructed in accordance with Australian Standard AS 3671:1989 Acoustics-Road Traffic Noise Intrusion-Building Siting and Construction. Future dwellings on all lots will need to be designed and constructed to Category 2 & 3 requirements which are detailed as follows: Category 1. Standard construction; openings, including open windows and doors may comprise up to 10% of the exposed facade. TNR of approximately 10 db(a) is expected Category 2. Standard construction, except for lightweight elements, such as fibrous cement, or metal cladding, or all glass facades. Windows, doors and other openings must be closed. TNR of approximately 25 db(a) is expected Category 3. Special construction, chosen in accordance with the methodology described in Clause 3.4 (of AS3671:1989). Windows, doors and other openings must be closed. TNR between 25 and 35 is expected. Further clarification of the acoustic treatment and review process required for each Lot is detailed in Appendix C. If a 1.8 metre high barrier is provided along the southern boundary of Stages 30 and 31, as previously designed for those stages and as shown in Figure 7.1, dwellings on 4 Lots (1296, 1297, 1298 and 1402)) in stage 42A will require Category 3 for the upper level unless restricted to one storey only. The remainder of the Lots will require dwelling category constructions 2. It should be noted that external windows and doors will need to be closed for predicted internal noise levels to comply with the design benchmarks for Category 2 and 3. April 2017 Cardno 30

31 9 Conclusions This report assesses the predicted road traffic noise, from the Centenary Highway, and other nearby local roads impacting on the proposed Ripley Valley (AMEX SUCE) development, for Stage 42A. The proposed Ripley Valley (AMEX SUCE) development, Stage 42A is located within largely undeveloped future residential area of Ripley with low existing noise levels. The Centenary Highway is the dominant existing traffic noise source in the area, but currently carries relatively low traffic flow, with only 7,070 vehicles per day in This is expected to significantly increase to an estimated 63,000 vehicles per day in The following conclusions apply to this assessment: The Centenary Motorway located along the northern boundary of the development has been identified to be the primary source of noise predicted to impact on the overall Ripley Valley (AMEX SUCE) development, along with Ripley Road and some of the proposed new internal roads. However, the primary road traffic noise sources impacting on the assessed site, Stage 42A are Bayliss Road and the South East Arterial Road. Residential Lots within the Amex SUCE Stage 42A have been identified to be in excess of 200 metres from the Centenary Highway at the nearest point to the proposed development therefore QDC MP 4.4 criteria has not been considered applicable to this assessment. All the modelling conclusions listed below assume that the 1.8 metre high barrier previously designed for Stages 30 and 31 is constructed along the southern boundary of the site as shown in Figure 7-1. Modelling indicates that 4 Lots (1296, 1297, 1298 and 1402) will require Category 3 construction for the upper floors if constructed with more than one level, with the remainder of the upper floors within the modelled stages requiring Category 2 construction. Refer to Appendix C for more information regarding the requirements of Category 3 construction, and specific design review requirements associated with this development. Modelling indicates, Australian Standard AS3671 building Category 2 construction will be required for the ground floor of dwellings on all other Lots located within Stages 42A. The requirements of AS 3671 Category 2 construction are explained further in Section 8 and Appendix C of this report. It is not possible to accurately predict L Amax noise levels from road traffic noise. Therefore this has not been assessed. L Amax noise level will be dependent on traffic types proposed to use the development s internal roads. We would expect that given the nature of the road traffic, being low speed local access traffic, the L Amax noise levels from traffic pass-bys are likely to be in accordance with other similar developments in Queensland. April 2017 Cardno 31

32 Ripley Valley Amex SUCE Development Stages 42A ROL Phase APPENDIX A NOISE CONTOUR MAPS April 2017 Cardno 32

33 Figure A Existing Road Traffic Noise Contours April 2017 Cardno 33

34 Figure A2 EDQ, AS 3671 Assessment Ground Floor Noise Contours Day LAeq April 2017 Cardno 34

35 Figure A4 EDQ, AS 3671 Assessment First Floor Noise Contours Day LAeq April 2017 Cardno 35

36 Figure A6 EDQ, AS 3671 Assessment Ground Floor Noise Contours Night LAeq April 2017 Cardno 36

37 Figure A8 EDQ, AS 3671 Assessment First Floor Noise Contours Night LAeq April 2017 Cardno 37

38 Ripley Valley Amex SUCE Development Stages 42A ROL Phase APPENDIX B TRAFFIC FLOW DATA April 2017 Cardno 38

39 Figure B Traffic Flow Data April 2017 Cardno 39

40 Ripley Valley Amex SUCE Development Stages 42A ROL Phase APPENDIX C AS 3671 DWELLING ACOUSTIC TREATMENT & REVIEW PROCESS April 2017 Cardno 40

41 AS 3671 REQUIREMENTS FOR DWELLING ACOUSTIC TREATMENT & REVIEW PROCESS Numerous Lots within the Ripley Valley SUCE development require Category 2 construction in accordance with the requirements of Australian Standard AS3671:1989, Acoustics Road Traffic Noise Intrusion Building Siting & Construction. This is not the same as Category 2 construction in accordance with Queensland Development Code Mandatory Part 4.4 (QDC MP4.4) which only applies to sites impacted by state controlled roads in a designated transport corridor. The majority of stages within the development are not impacted by state controlled roads or located in a state transportation corridor. AS 3671 Category 2 construction is required where external night-time noise levels are predicted to be between 45 db(a) and 60 db(a) as a result of non-state controlled roads. The acoustic report for each stage will provide this information in a table detailing the Lot number, predicted external day and night-time noise levels, and the required category construction. AS 3671 requires the following noise reduction performance and building construction, but does not specify building materials that will comply with a category 2 construction Category 2. Standard construction, except for lightweight elements, such as fibrous cement, or metal cladding, or all glass facades. Windows, doors and other openings must be closed. TNR of between 10 db(a) and 25 db(a) is expected. Where 25 db(a) noise reduction is required, obviously, a higher level of construction will be required than where only a 10 db(a) noise reduction is required. For this reason, we have divided category 2 Lots into two sub-categories: 1. Category 2a - Those where the external night-time noise level is less than 57 db(a). 2. Category 2b - Those where the external night-time noise level is equal to or greater than 57 db(a). The following flow chart should be followed to select the correct acoustic treatment and review option: April 2017 Cardno 41

42 Figure C1 Method to Determine the Level of Required Acoustic Treatment & Review Review Lot in Acoustic Report and Determine Required AS3671 category construction Category 1 Category 2a, and night-time noise level is less than 57 db(a) Category 2b, and night-time noise level is equal to or greater than 57 db(a) Category 3 Does proposed construction contain *single layer (noncavity) construction or all glass facades? No No further action required with regard to acoustic review or treatment. Yes Design in accordance with QDC MP4.4 Category 1 required Rw ratings or alternative design to be reviewed and Form 15 provided by a qualified acoustic consultant Design in accordance with QDC MP4.4 Category 3 required Rw ratings or alternative design to be reviewed and Form 15 provided by a qualified acoustic consultant *Single Layer construction means one layer i.e. no cavity, no inner plasterboard layer and no insulation. For information, the QDC MP4.4 required Category 1 and 3 Rw ratings are listed below: Table 1: Summary of the QDC MP4.4 Category 1 & 3 Requirements Minimum transport Noise Category noise reduction (db(a)) required for habitable rooms Component of building external envelope Category 1 25 Minimum Rw required for each component 27 (where total area of glazing for a habitable room is greater than 1.8m Glazing 2 ) 24 (where total area of glazing for a habitable room is less than 1.8m 2 ) External Walls 35 Roof 35 Entry Doors 28 April 2017 Cardno 42

43 Noise Category Minimum transport noise reduction (db(a)) required for habitable rooms Category 3 35 Component of building external envelope Glazing Minimum Rw required for each component 38 (where total area of glazing for a habitable room is greater than 1.8m 2 ) 35 (where total area of glazing for a habitable room is less than or equal to 1.8m 2 ) External Walls 47 Floors 45 Roof 41 Entry Doors 33 April 2017 Cardno 43