road traffic noise impact assessment - draft · road traffic noise impact assessment - draft ....

43
Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase A038_790147 Prepared for AMEX Corporation April 2017 Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase A038_790147

Upload: truongtu

Post on 13-Aug-2018

221 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft

Ripley Valley Amex SUCE Development Stages 42A ROL Phase A038_790147

Prepared for AMEX Corporation April 2017

Road Traffic Noise Impact Assessment - Draft

Ripley Valley Amex SUCE Development Stages 42A ROL Phase A038_790147

Page 2: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno ii

Document Information Prepared for AMEX Corporation Project Name Ripley Valley Amex SUCE Development Stages 42A ROL Phase File Reference PR_A038_790147_Stages 42A_01JM.docm Job Reference A038_790147 Date April 2017

Contact Information Cardno QLD Pty Ltd Trading as Cardno ABN 57 051 074 992 L11 Green Square North Tower 515 St Pauls Terrace Fortitude Valley QLD 4006 Telephone: 07 3369 9822 Facsimile: 07 3369 9722 International: +61 7 3369 9822 [email protected]

Document Control Version

Date Author Author Initials

Reviewer Reviewer Initials

01 10/04/2017 Draft Liam McDonagh LM Julie McDonagh JM

© Cardno 2017. 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.

Page 3: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno iii

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 2017. 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 10-54 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.

Page 4: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno iv

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 LAmax noise levels from road traffic noise. Therefore this has not been assessed. LAmax 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 LAmax 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.

Page 5: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno v

Table of Contents Executive Summary iii Glossary and Abbreviations vii 1 Development Proposal 8

2 Existing Noise Environment 9 2.1 Noise Monitoring Locations 9

3 Existing Noise Conditions 11 3.1 Environmental Monitoring Conditions 11 3.2 Equipment Calibration 11 3.3 Measurement Parameters 11 3.4 Measurement Results 11

4 Noise Assessment Criteria 17 4.1 Statutory Requirements 17

4.1.1 Development Approval (Stages 10 to 54) Condition 14, Ipswich City Council 17 4.1.2 Economic Development Queensland (formerly Urban Land Development

Authority) 17 4.1.3 Queensland Development Code (QDC) MP 4.4 – Buildings In A Transport Noise

Corridor 18 4.1.4 Australian Standards 18

5 Design Benchmarks 20 5.1 External Road Traffic Noise 20

6 Noise Assessment Methodology 21 6.1 Modelled Scenarios 21 6.2 Noise Model Inputs & Assumptions 21

6.2.1 General Modelling Inputs 21 6.2.2 Traffic Flow Information 22 6.2.3 Additional Assumptions 23

6.3 Noise Model verification 24 7 Road Traffic Noise Impact Assessment 25

7.1 Modelled Scenarios 25 7.2 Modelled Existing Noise Barrier 25 7.3 Predicted 2031 Traffic Noise Levels 26

7.3.1 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 2107:2000 18 Table 5-1 Summary of Adopted Road Traffic Criteria 20

Page 6: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno vi

Table 6-1 Noise Modelling inputs 21 Table 6-2 2031 Road Traffic modelling inputs 22 Table 6-3 2012 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 6-1 24 hour ultimate traffic map of the proposed development – Stages 42A 23 Figure A1 2012 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 B1 2031 Traffic Flow Data 39 Figure C1 Method to Determine the Level of Required Acoustic Treatment & Review 42

Page 7: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno vii

Glossary and Abbreviations

Term Definition

A-weighted Level As per dB(A) defined below.

Ambient Sound Of an environment: the all-encompassing sound associated with that environment, being a composite of sounds from many sources, near and far.

Background Sound Level 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.

Decibel, dB Unit of acoustic measurement. Measurements of power, pressure and intensity may be expressed in dB relative to standard reference levels.

L90, L10 etc.

A statistical measurement giving the sound pressure level which is exceeded for the given percentile of an observation period, i.e. L90 is the level which is exceeded for 90 percent of an observation period. L90 is commonly referred to as a basis for measuring the background sound level.

LAbg, T The A-weighted background sound level measured over a time interval T.

LAeq, 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.

Sound Pressure Level, Lp, dB, of a 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, Law, dB of a source

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.

Page 8: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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

Page 9: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 2012.

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 23 – 30 April 2012

Iron NL-21 01043718

2 Approximately 4m from Ripley Road 23 – 30 April 2012

Iron NL-21 00365350

3 400m from Ripley Road on Bayless Road 23 – 30 April 2012

Iron Nl-21

00276274

4 Approximately 800m from Centenary Highways on Abrahams Road

23 – 30 April 2012 Iron Nl-21

00776886

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.

Page 10: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 10

Figure 2-1 Noise Logger Locations

Logger 1

Logger 2

Logger 3

Logger 4

Page 11: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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: Fine

Wind: 2–24 km/h from a WSW / ESE direction

Humidity: 38–83%

Temperature: Range between 13-30oC

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: LAmax: the A-weighted maximum noise level measured during the measurement period. LA1: the A-weighted noise level exceeded for 1% of the measurement period. LA10: the noise A-weighted level exceeded for 10% of the measurement period, generally referred to as the

average maximum sound pressure level. LA90 : the A-weighted noise level exceeded for 90% of the measurement period, generally referred to as the

background noise level (refer AS 1055.1 – 1997).

LAeq : 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.

Page 12: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 12

Figure 3-1 Site Ambient Noise Levels logger 1

Figure 3-2 Site Ambient Noise Levels logger 2

0

20

40

60

80

100

120

23/03/2012 12:00

24/03/2012 0:00

24/03/2012 12:00

25/03/2012 0:00

25/03/2012 12:00

26/03/2012 0:00

26/03/2012 12:00

27/03/2012 0:00

27/03/2012 12:00

28/03/2012 0:00

28/03/2012 12:00

29/03/2012 0:00

29/03/2012 12:00

30/03/2012 0:00

LAeq

LAmax

LA10

LA90

Logger 1 - Ambient Noise Levels Measured at Centenary Highway (east of Ripley Road), Ripley Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

0

20

40

60

80

100

12023/03/2012 11:45

23/03/2012 23:45

24/03/2012 11:45

24/03/2012 23:45

25/03/2012 11:45

25/03/2012 23:45

26/03/2012 11:45

26/03/2012 23:45

27/03/2012 11:45

27/03/2012 23:45

28/03/2012 11:45

28/03/2012 23:45

29/03/2012 11:45

29/03/2012 23:45

LAeq

LAmax

LA10

LA90

Logger 2 - Ambient Noise Levels Measured at Ripley Road, Ripley Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

Page 13: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 13

Figure 3-3 Site Ambient Noise Levels logger 3

Figure 3-4 Site Ambient Noise Levels logger 4

0

20

40

60

80

100

120

23/03/2012 12:3023/03/2012 18:3024/03/2012 0:3024/03/2012 6:3024/03/2012 12:3024/03/2012 18:3025/03/2012 0:3025/03/2012 6:3025/03/2012 12:3025/03/2012 18:3026/03/2012 0:3026/03/2012 6:3026/03/2012 12:3026/03/2012 18:3027/03/2012 0:3027/03/2012 6:3027/03/2012 12:3027/03/2012 18:3028/03/2012 0:3028/03/2012 6:3028/03/2012 12:3028/03/2012 18:3029/03/2012 0:3029/03/2012 6:3029/03/2012 12:3029/03/2012 18:3030/03/2012 0:3030/03/2012 6:30

LAeq

LAmax

LA10

LA90

Logger 3 - Ambient Noise Levels Measured at Abrahams Road, Ripley Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

0

20

40

60

80

100

12023/03/2012 12:30

23/03/2012 18:30

24/03/2012 0:30

24/03/2012 6:30

24/03/2012 12:30

24/03/2012 18:30

25/03/2012 0:30

25/03/2012 6:30

25/03/2012 12:30

25/03/2012 18:30

26/03/2012 0:30

26/03/2012 6:30

26/03/2012 12:30

26/03/2012 18:30

27/03/2012 0:30

27/03/2012 6:30

27/03/2012 12:30

27/03/2012 18:30

28/03/2012 0:30

28/03/2012 6:30

28/03/2012 12:30

28/03/2012 18:30

29/03/2012 0:30

29/03/2012 6:30

29/03/2012 12:30

29/03/2012 18:30

30/03/2012 0:30

30/03/2012 6:30

LAeq

LAmax

LA10

LA90

Logger 4 - Ambient Noise Levels Measured at Bayliss Road, Ripley Between 23 and 30 March 2012

Soun

d P

ress

ure

Leve

l dB

(A)

Page 14: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 14

Figure 3-5 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 1

Figure 3-6 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 2

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

LAeq LAmax LA10 LA90

Logger 1 - Averaged Ambient Noise Levels Measured at Centenary Highway(east of Ripley Road), Ripley, Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

LAeq LAmax LA10 LA90

Logger 2 - Averaged Ambient Noise Levels Measured at Ripley Road, Ripley Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

Page 15: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 15

Figure 3-7 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 3

Figure 3-8 Typical 24 Hour Averaged Site Ambient Noise Levels Logger 4

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

LAeq LAmax LA10 LA90

Logger 3 - Averaged Ambient Noise Levels Measured at Abrahams Road, Ripley

Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

LAeq LAmax LA10 LA90

Logger 4 - Averaged Ambient Noise Levels Measured at Bayliss Road, Ripley Between 23 and 30 March 2012

Sou

nd P

ress

ure

Leve

l dB

(A)

Page 16: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 LA10, dB(A) LA90. dB(A) LAeq, dB(A)

7am-6pm

6pm-10pm

10pm-7am

7am-6pm

6pm-10pm

10pm-7am

7am-6pm

6pm-10pm

10pm-7am

Logger 1 (Centenary Highway) 67 63 58 43 45 39 64 61 59

Logger 2 (Ripley Road) 56 52 46 38 41 34 59 55 46

Logger 3 (Abrahams Road) 45 45 40 35 38 32 44 44 37

Logger 4 (Bayliss Road) 45 42 40 35 39 35 43 41 39

Table 3-2 Measured Average LA10, 1hr (averaged over 7 day period) noise levels at logger locations.

Time Period

Measured LA10 1hr Noise Level ,dB(A)

Time Period

Measured LA10 1hr Noise Level dB(A)

Logger 1

Logger 2

Logger 3

Logger 4

Logger 1

Logger 2

Logger 3

Logger 4

00:00-01:00 52 40 38 39 12:00-13:00 66 54 43 53

01:00-02:00 51 38 36 38 13:00-14:00 66 54 44 44

02:00-03:00 52 38 36 37 14:00-15:00 67 55 44 46

03:00-04:00 54 38 37 37 15:00-16:00 69 57 48 46

04:00-05:00 61 42 39 38 16:00-17:00 69 57 46 45

05:00-06:00 67 52 45 48 17:00-18:00 68 57 44 44

06:00-07:00 69 54 48 47 18:00-19:00 66 57 47 46

07:00-08:00 68 58 45 47 19:00-20:00 62 54 43 42

08:00-09:00 67 56 44 45 20:00-21:00 62 49 41 41

09:00-10:00 66 53 45 44 21:00-22:00 61 47 40 39

10:00:11:00 65 55 44 44 22:00:23:00 60 44 39 39

11:00-12:00 66 54 44 45 23:00-00:00 56 41 38 39

Page 17: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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

4.1.1 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 2013. 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

4.1.2 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 Design Level Road Traffic Noise Criteria

Inside bedrooms of a proposed dwelling house, multiple dwelling or accommodation unit.

(a) Average LAmax (10pm-6am) not greater than 50dB(A), and

(b) LAeq(1hr)(10pm-6am) – not greater than 35dB(A)

Inside living rooms of a proposed dwelling house, multiple dwelling or accommodation unit.

LAeq(1hr)(6am - 10pm) – not greater than 45dB(A)

Page 18: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 4.4 - 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.

4.1.4 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 35 45 Sleeping areas 30 40 Work areas 35 45 Apartment common areas (e.g. foyer, lift lobby 45 55

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 2107. 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: 3.2.1 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. 3.2.2 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.

Page 19: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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. 3.2.4 Category 4. TNR greater than 35 dB(A) is required; special acoustic advice should be sought.

Page 20: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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)

Page 21: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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

6.2.1 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 Input Date/Source Reference

Ground Elevation Geometry Provided by Cardno Civil

Road Alignment Provided by Cardno Civil

Predicted Traffic Flow Data Provided by Cardno Traffic and detailed in Table 6-2.

Road Traffic Speeds Assumed as posted for the Centenary Highway, and local roads

Road Surface Type

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

Ground Absorption Assumed 100% soft ground absorption surfaces between road and receivers

Page 22: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 22

Input Parameter Input Date/Source Reference

Facade Reflection +2.5 dB(A) – applied to prediction models, as all receivers are located at facades of receiver.

Correction to CoRTN for Façade Corrected Australian Conditions

-1.7 dB(A) CoRTN correction for Australian conditions (with reference to TMR TNM CoP2013)

Receiver Height Assumed to be 1.8 & 4.6 metres above ground for ground and first floors respectively as required by the TMR TNM CoP2013.

6.2.2 Traffic Flow Information

The following road traffic flow model inputs were obtained from Cardno:

Table 6-2 2031 Road Traffic modelling inputs

Input Parameter Centenary Highway

Input Date/Source Reference

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

2,300- - 20,350

% 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.

Page 23: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 23

Figure 6-1 24 hour ultimate traffic map of the proposed development – Stages 42A

6.2.3 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.

The South East Arterial (SEA)

Stage 42

Bayliss Road

Page 24: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 6-3 2012 Modelling Inputs

Input Parameter Centenary Highway Ripley Road

Traffic speed 100 km/h 60km/h

Traffic flow: AADT 5,028 390

% 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, LA10 18hr dB(A)

Measured, LA10 18hr dB(A)

Difference, dB(A)

Logger 1 Centenary Highway 65.2 65.1 +0.1

Logger 2 Ripley Road 51.4 53.1 -1.7

Logger 3 Bayliss Road 37.6 43.6 +6.0(1)

Logger 4 Abrahams Road 42.9 44.3 +1.4

(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.

Page 25: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 LAeq, (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 Modelling Summary Modelled Scenario

Year Floor Assessment Criteria Basis

Description

1 2012 - - Existing road traffic noise contours (extrapolated from 2010 road traffic flow data).

2 2031 Ground EDQ / AS3671 Predicted road traffic noise contours for inside bedrooms and living areas of a proposed dwelling (Stage 42A)

3 2031 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.

Page 26: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 26

Figure 7-1 Location of Previously Designed Noise Barrier for Stages 30-31

7.3 Predicted 2031 Traffic Noise Levels

7.3.1 EDQ Assessment

CoRTN Modelling algorithms such as those used in SoundPLAN predict a LA10,18hr road traffic noise level rather than the required LAeq,18hr and LAeq,1hr noise level specified in the EDQ criteria. To determine the predicted daytime LAeq noise levels for assessment the EDQ criteria, a correction factor of -3 dB(A) was applied in accordance with the requirements of AS 3671. There is no statutory recommended correction factor to convert LA10,18hr to LAeq, 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 LA10, 18hr for the existing scenario. Therefore the following correction factors were applied to the modelling to determine LAeq 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.

Noise Barrier

Page 27: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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

Predicted External Road Traffic Noise Level With No Barrier, dB(A) AS:3671

Category Required LA10, 18h Day

LAeq,1h Night LAeq,1h

Stage 42A

1296 77.8 Ground 60 57 53 2

First 68 65 61 3

1297 78.8 Ground 60 57 53 2

First 69 66 62 3

1298 79.9 Ground 59 56 52 2

First 68 65 61 3

1361 75.1 Ground 54 51 47 2

First 55 52 48 2

1362 75.8 Ground 54 51 47 2

First 55 52 48 2

1363 75.5 Ground 54 51 47 2

First 56 53 49 2

1364 75.9 Ground 54 51 47 2

First 55 52 48 2

1365 76.3 Ground 54 51 47 2

First 55 52 48 2

1366 76.6 Ground 54 51 47 2

First 55 52 48 2

1367 77.2 Ground 54 51 47 2

First 55 52 48 2

1368 77.9 Ground 54 51 47 2

First 55 52 48 2

1369 78.6 Ground 54 51 47 2

First 55 52 48 2

1370 79.6 Ground 54 51 47 2

First 55 52 48 2

1371 79.4 Ground 54 51 47 2

First 56 53 49 2

1372 78.6 Ground 54 51 47 2

First 55 52 48 2

1397 78.2 Ground 55 52 48 2

First 57 54 50 2

1398 79.0 Ground 55 52 48 2

First 57 54 50 2

1399 79.1 Ground 57 54 50 2

First 59 56 52 2

Ground 56 53 49 2

Page 28: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 28

Lot Centre of Lot RL, m

Floor Level

Predicted External Road Traffic Noise Level With No Barrier, dB(A) AS:3671

Category Required LA10, 18h Day

LAeq,1h Night LAeq,1h

1400 78.3 First 59 56 52 2

1401 81.1 Ground 59 56 52 2

First 66 63 59 2

1402 81.2 Ground 60 57 53 2

First 67 64 60 3

1403 80.4 Ground 56 53 49 2

First 58 55 51 2

1404 80.5 Ground 56 53 49 2

First 57 54 50 2

1405 80.5 Ground 55 52 48 2

First 57 54 50 2

1406 80.7 Ground 55 52 48 2

First 56 53 49 2

1407 80.8 Ground 54 51 47 2

First 56 53 49 2

1408 80.8 Ground 54 51 47 2

First 56 53 49 2

1409 80.8 Ground 54 51 47 2

First 56 53 49 2

1410 80.8 Ground 54 51 47 2

First 56 53 49 2

1411 80.8 Ground 54 51 47 2

First 56 53 49 2

1412 80.8 Ground 53 50 46 2

First 55 52 48 2

1413 80.8 Ground 54 51 47 2

First 55 52 48 2

1414 80.8 Ground 54 51 47 2

First 55 52 48 2

1415 80.8 Ground 54 51 47 2

First 56 53 49 2

1416 80.8 Ground 54 51 47 2

First 56 53 49 2

1417 80.8 Ground 54 51 47 2

First 56 53 49 2

1418 80.8 Ground 54 51 47 2

First 56 53 49 2

1419 80.8 Ground 54 51 47 2

First 56 53 49 2

Ground 53 50 46 2

Page 29: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 29

Lot Centre of Lot RL, m

Floor Level

Predicted External Road Traffic Noise Level With No Barrier, dB(A) AS:3671

Category Required LA10, 18h Day

LAeq,1h Night LAeq,1h

1446 81.4 First 56 53 49 2

1447 80.8 Ground 54 51 47 2

First 56 53 49 2

1474 83.4 Ground 54 51 47 2

First 56 53 49 2

1475 83.6 Ground 54 51 47 2

First 56 53 49 2

1476 83.5 Ground 54 51 47 2

First 56 53 49 2

1477 82.9 Ground 53 50 46 2

First 56 53 49 2

1492 81.9 Ground 57 54 50 2

First 57 54 50 2

1493 82.5 Ground 55 52 48 2

First 56 53 49 2

Page 30: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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:

2.2.1 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.

2.2.2 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.

2.2.3 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.

Page 31: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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 2012. This is expected to significantly increase to an estimated 63,000 vehicles per day in 2031.

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 LAmax noise levels from road traffic noise. Therefore this has not been assessed. LAmax 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 LAmax noise levels from traffic pass-bys are likely to be in accordance with other similar developments in Queensland.

Page 32: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 32

Ripley Valley Amex SUCE Development Stages 42A ROL Phase

APPENDIX A NOISE CONTOUR MAPS

Page 33: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 33

Figure A1 2012 Existing Road Traffic Noise Contours

Page 34: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 34

Figure A2 EDQ, AS 3671 Assessment Ground Floor Noise Contours Day LAeq

Page 35: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 35

Figure A4 EDQ, AS 3671 Assessment First Floor Noise Contours Day LAeq

Page 36: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 36

Figure A6 EDQ, AS 3671 Assessment Ground Floor Noise Contours Night LAeq

Page 37: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 37

Figure A8 EDQ, AS 3671 Assessment First Floor Noise Contours Night LAeq

Page 38: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 38

Ripley Valley Amex SUCE Development Stages 42A ROL Phase

APPENDIX B TRAFFIC FLOW DATA

Page 39: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 39

Figure B1 2031 Traffic Flow Data

Page 40: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 40

Ripley Valley Amex SUCE Development Stages 42A ROL Phase

APPENDIX C AS 3671 DWELLING ACOUSTIC TREATMENT & REVIEW PROCESS

Page 41: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 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.

“3.2.2 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:

Page 42: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 42

Figure C1 Method to Determine the Level of Required Acoustic Treatment & Review

*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

Noise Category

Minimum transport noise reduction

(dB(A)) required for habitable rooms

Component of building external envelope

Minimum Rw required for each component

Category 1 25

Glazing

27 (where total area of glazing for a

habitable room is greater than 1.8m2) 24

(where total area of glazing for a habitable room is less than 1.8m2)

External Walls 35 Roof 35

Entry Doors 28

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 3 Category 2b, and night-time noise level is equal to or greater than 57 dB(A)

Does proposed construction contain *single layer (non-cavity) construction or all glass facades?

No further action required with regard to acoustic review or treatment.

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

No Yes

Page 43: Road Traffic Noise Impact Assessment - Draft · Road Traffic Noise Impact Assessment - Draft . Ripley Valley Amex SUCE Development Stages 42A ROL Phase . ... 6.3 Noise Model verification

Road Traffic Noise Impact Assessment - Draft Ripley Valley Amex SUCE Development Stages 42A ROL Phase

April 2017 Cardno 43

Noise Category

Minimum transport noise reduction

(dB(A)) required for habitable rooms

Component of building external envelope

Minimum Rw required for each component

Category 3 35

Glazing

38 (where total area of glazing for a

habitable room is greater than 1.8m2)

35 (where total area of glazing for a

habitable room is less than or equal to 1.8m2)

External Walls 47

Floors 45

Roof 41 Entry Doors 33