5-19 George Street, Blacktown · \\acousticlogic.local\data\Australia\Jobs\2018\20181009\20181009.2\20190613SNA_R1_DA Acoustic Assessment.docx 2 DOCUMENT CONTROL REGISTER Project

$Page 1: 5-19 George Street, Blacktown · \\acousticlogic.local\data\Australia\Jobs\2018\20181009\20181009.2\20190613SNA_R1_DA Acoustic Assessment.docx 2 DOCUMENT CONTROL REGISTER Project$
SYDNEY A: 9 Sarah St MASCOT 2020 T: (02) 8339 8000

SYDNEY MELBOURNE BRISBANE CANBERRA LONDON DUBAI SINGAPORE GREECE

ABN: 11 068 954 343

The information in this document is the property of Acoustic Logic Consultancy Pty Ltd ABN 11 068 954 343 and shall be returned on demand. It is issued on the condition that, except with our written permission, it must not be reproduced, copied or communicated to any other party nor be used for any purpose other than that stated in particular enquiry, order or contract with which it is issued.

\\acousticlogic.local\data\Australia\Jobs\2018\20181009\20181009.2\20190613SNA_R1_DA Acoustic Assessment.docx 1

DIRECTORS MATTHEW PALAVIDIS VICTOR FATTORETTO MATTHEW SHIELDS

MANAGING DIRECTORS

MATTHEW PALAVIDIS

VICTOR FATTORETTO

GENERAL MANAGER

MATTHEW SHIELDS

5-19 George Street, Blacktown

DA Acoustic Assessment


DOCUMENT CONTROL REGISTER

Project Number 20181009.2

Project Name 5-19 George Street, Blacktown

Document Title DA Acoustic Assessment

Document Reference 20181009.2/1306A/R1/SN

Issue Type Email

Attention To Good Luck Plaza (Blacktown) Pty Ltd ATF Good Luck Plaza (Blacktown) Property Trust

Revision Date Document Reference Prepared By

Checked By

Approved By

0 30/07/2018 20181009.1/3007A/R0/SN SN GW

1 13/06/2019 20181009.2/1306A/R1/SN SN GW


TABLE OF CONTENTS

1 INTRODUCTION ................................................................................................................. 5 2 SITE DESCRIPTION .............................................................................................................. 8 3 ENVIRONMENTAL NOISE DESCRIPTORS ............................................................................ 10 4 EXISTING ACOUSTIC ENVIRONMENT ................................................................................ 11

4.1 BACKGROUND NOISE LEVELS .................................................................................... 11 4.1.1 Measurement Equipment ......................................................................................... 11 4.1.2 Measurement Location ............................................................................................. 11 4.1.3 Measurement Period ................................................................................................. 11 4.1.4 Measured Background Noise Levels .......................................................................... 11 4.1.5 Unattended Noise Measurements ............................................................................ 11 4.1.6 Summarised Rating Background Noise Levels ........................................................... 12

5 EXTERNAL NOISE INTRUSION ASSESSMENT ...................................................................... 13 5.1 NOISE INTRUSION CRITERIA ...................................................................................... 13

5.1.1 Blacktown Development Control Plan 2015.............................................................. 13 5.1.2 NSW Department of Planning and Environment’s Document – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline’ (Rail and Traffic Noise Intrusion) ................ 13 5.1.3 NSW Department of Planning and Environment’s document – ‘State Environmental Planning Policy (SEPP) (INFRASTRUCTURE) 2007’ (Rail and Traffic Noise Intrusion) ................ 14 5.1.4 Australian and New Zealand AS/NZS 2107:2016 ‘Recommended design sound levels and reverberation times for building interiors’ (Rail and Traffic Noise Intrusion) .................... 15 5.1.5 Summary of Criteria ................................................................................................... 16

5.2 EXTERNAL NOISE MEASUREMENTS ........................................................................... 16 5.2.1 Noise Measurements................................................................................................. 16

5.2.1.1 Measurement Equipment ..................................................................................... 16 5.2.1.2 Measurement Locations ........................................................................................ 17 5.2.1.3 Measurement Period ............................................................................................. 17 5.2.1.4 Measured Traffic/Rail Noise Levels ....................................................................... 17 5.2.1.5 Unattended Traffic/Rail Noise Monitoring ............................................................ 17 5.2.1.6 Attended Traffic Noise Measurements ................................................................. 18 5.2.1.7 Measured Rail Noise Levels ................................................................................... 18 5.2.1.8 Attended Rail Noise Measurements ...................................................................... 18 5.2.1.9 Summarised External Noise Levels ........................................................................ 18

5.3 NOISE INTRUSION ANALYSIS ..................................................................................... 19 5.4 RECOMMENDED CONSTRUCTIONS ............................................................................ 19

5.4.1 Glazed Windows and Doors ...................................................................................... 19 5.4.2 External Wall Construction ........................................................................................ 21 5.4.3 External Roof & Ceiling Construction ........................................................................ 21 5.4.4 Entry Doors ................................................................................................................ 21 5.4.5 Mechanical Ventilation .............................................................................................. 22

6 RAILWAY VIBRATION ASSESSMENT .................................................................................. 23 6.1 PROJECT VIBRATION OBJECTIVES .............................................................................. 23

6.1.1 Tactile Vibration ........................................................................................................ 23 6.1.2 Structure Borne Noise ............................................................................................... 24

6.2 RAIL VIBRATION MEASUREMENTS ............................................................................ 24 6.2.1 Structure borne noise generated by rail movements ............................................... 25

6.3 FINDINGS ................................................................................................................. 25 7 NOISE EMISSION ASSESSMENT ......................................................................................... 26

7.1 NOISE CRITERIA ........................................................................................................ 26 7.1.1 Blacktown Development Control Plan 2015.............................................................. 26


7.1.2 NSW EPA document – ‘Noise Policy for Industry (NPfI) 2017’ ................................... 26 7.1.2.1 Intrusiveness Noise Level Criteria ......................................................................... 26 7.1.2.2 Project Amenity Noise Level Criteria ..................................................................... 27 7.1.2.3 Project Noise Trigger Level .................................................................................... 28

7.1.3 Sleep Arousal Criteria ................................................................................................ 28 7.2 NOISE EMISSION ASSESSMENT ................................................................................. 29

7.2.1 Mechanical Plant Noise ............................................................................................. 29 7.2.2 Ground Floor to Level 1 Tenancies ............................................................................ 29

8 CONCLUSION ................................................................................................................... 30 APPENDIX ONE – UNATTENDED NOISE MONITORING DATA – FRONT OF THE SITE ................... 31


1 INTRODUCTION

Acoustic Logic Consultancy (ALC) have been engaged to conduct an acoustic assessment of potential noise impacts associated with the proposed mixed-use building to be constructed at 5-19 George Street, Blacktown.

This document addresses noise impacts associated with the following:

• Traffic noise impacts from Sunnyholt Road;

• Traffic noise impacts from George Street;

• Rail noise impacts from the adjacent T1 and T5 Rail Corridor;

• Rail vibration impacts from the adjacent T1 and T5 Rail Corridor; and

• Noise emissions from the mechanical plant to service the base building.

ALC have utilised the following documents and regulations in the noise assessment of the development:

• Blacktown Development Control Plan 2015;

• NSW Department of Planning and Environment’s document – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline 2008’;

• NSW Department of Planning and Environment’s document – ‘State Environmental Planning Policy (SEPP) (INFRASTRUCTURE) 2007”;

• Australian and New Zealand AS/NZS 2107:2016 ‘Recommended design sound levels and reverberation times for building interiors’;

• British Standard BS 7385:1990 Part 2 ‘Evaluation and measurement for vibration in buildings – part 2’;

• Australian Standard AS2670:1990 ‘Vibration and Shock – Guide to the evaluation of human exposure to whole body vibration’;

• NSW Department of Environment and Conservation’s document ‘Assessing Vibration: A Technical Guideline’; and

• NSW Department of Environment and Heritage, Environmental Protection Authority document – ‘Noise Policy for Industry (NPfI) 2017’.

This assessment has been conducted using the Jackson Teece architectural drawings, see details below.

Table 1 – Architectural Drawing List

Architect Drawing Number

Drawing Title Date Revision

Jackson Teece

DA-000 COVER SHEET

18/03/19

D

DA-001 NEIGHBOURHOOD CONTEXT B

DA-002 STREETSCAPE ANALYSIS PLAN B

DA-004 SITE PLAN C

DA-005 SITE & CONTEXT ANALYSIS B




Jackson Teece

DA-006 CONCEPT DIAGRAM

18/03/19

B

DA-007 BUILDING HEIGHT DIAGRAM B

DA-010 EXISTING DEMOLITION PLAN C

DA-093 FLOOR PLAN – BASEMENT 7 C

DA-094 FLOOR PLAN - BASEMENT 6 C






DA-100 FLOOR PLAN - GROUND C

DA-100.5 FLOOR PLAN – UPPER GROUND C

DA-101 FLOOR PLAN – LEVEL 1 C



DA-104 FLOOR PLAN – LEVEL 4 B

DA-105 FLOOR PLAN – TYPICAL LEVEL LEVELS 5 - 14 D

DA-116 FLOOR PLAN – LEVEL 15 - 16 A

DA-117 FLOOR PLAN – LEVEL 17 B

DA-118 ROOF PLAN B

DA-150 PRIVACY SCREENS STUDIES A

DA-201 STREET ELEVATION – SOUTH – (GEORGE ST) C

DA-202 STREET ELEVATION – EAST – (SUNNY HOLT

RD) & WEST C

DA-203 STREET ELEVATION – NORTH – (HUMPHRIES

LN) C

DA-204 EAST TOWER – ELEVATION SOUTH AND

WEST C

DA-205 EAST TOWER – ELEVATION NORTH AND

EAST C

DA-206 WEST TOWER – ELEVATION SOUTH AND

WEST C

DA-207 WEST TOWER – ELEVATION EAST C

DA-401 EAST TOWER – SECTION – EAST WEST D

DA-403 WEST TOWER – SECTION – NORTH SOUTH C




Jackson Teece

DA-404 PODIUM – SECTION

18/03/19

C

DA-405 PODIUM - SECTION C

DA-410 TOWER FAÇADE DETAIL - TYPICAL C

DA-500 APARTMENT TYPES – 1 BED A




DA-504 APARTMENT TYPES – 3 & 4 BED A

DA-505 ADAPTABLE APARTMENT TYPES A

DA-506 LIVABLE APARTMENT TYPES A

DA-600 DEVELOPMENT SUMMARY C

DA-602 (GFA) GROSS FLOOR AREA PLAN C

DA-603 (NSA) NET SALEABLE AREA FLOOR PLAN –

GROUND FLOOR, LEVEL 01 C

DA-604 (GBA) BUILDING AREA PLAN - BASEMENT C

DA-605 (GBA) BUILDING AREA PLAN C

DA-650 BASEMENT STORAGE SCHEDULE C

DA-700 SOLAR ACCESS DIAGRAMS C

DA-710 CROSS VENTATION DIAGRAMS C

DA-730 COMMUNAL OPEN SPACE A

DA-731 CHILDCARE CENTRE OUTDOOR SPACE A

DA-800 SHADOW DIAGRAMS 21 JUN (9AM, 10AM,

11AM & 12PM) B

DA-801 SHADOW DIAGRAMS 21 JUN (1PM, 2PM &

3PM) B

DA-901 NOTIFICATION PLAN B

DA-902 NOTIFICATION PLAN - ELEVATIONS B

DA-903 NOTIFICATION PLAN - ELEVATIONS B

DA-910 PERSPECTIVE (3D) VIEW 1 C

DA-911 PERSPECTIVE (3D) VIEW 2 B

DA-920 MATERIALS AND FINISHES A


2 SITE DESCRIPTION

The proposed new mixed-use development is located at 5-19 George Street, Blacktown. The development consists of two building towers with 245 apartments between levels two and seventeen. The Ground floor to level 1 provides retail, supermarket and a child care centre.

There are seven levels of basement parking with a total of 436 parking spaces.

Acoustic investigation has been carried out by this office in regards to the developments surrounding the site, which has been detailed below:

• Commercial dwellings to the North, across Humphries Lane;

• The T1 and T5 Rail Corridor to the South, across George Street;

• Residential dwellings to the East; and

• Commercial dwellings to the West.

Site investigation indicates that SunnyHolt road carries a moderate to high volume of traffic and George Street carries a low to moderate volume of traffic, mainly state transit buses.

The nearest residential noise receivers around the project site include:

• Receiver 1 - Commercial dwelling located at 6 First Avenue, situated to the north, commercial receiver is Double Storey;

• Receiver 2 - Commercial dwellings located at 6A - 12A First Avenue, situated to the north, commercial receivers are Single Storey;

• Receiver 3 - Commercial dwelling located at 1 George Street, situated to the West, Commercial receiver is double story;

• Receiver 4 - Commercial dwelling located at 3 George Street, situated to the West, Commercial receiver is double story;

• Receiver 5 - Residential dwellings located at 43,45,47 & 49 Devitt Street and 2,4,6 and 8-18 Wallace Street, situated to the east, residential receivers are single story and multi Storey.

A site map, measurement description and surrounding receivers are presented in Figure 1 below.


Figure 1: Site Survey and Monitoring Positions Sourced from Six Maps

Project Site

Residential Receiver Unattended Noise Monitor

Attended Noise Measurement

Commercial Receiver Vibration Measurement


3 ENVIRONMENTAL NOISE DESCRIPTORS

Environmental noise constantly varies. Accordingly, it is not possible to accurately determine prevailing environmental noise conditions by measuring a single, instantaneous noise level.

To accurately determine the environmental noise a 15-20 minute measurement interval is utilised. Over this period, noise levels are monitored on a continuous basis and statistical and integrating techniques are used to determine noise description parameters.

In analysing environmental noise, three-principle measurement parameters are used, namely L10, L90 and Leq.

The L10 and L90 measurement parameters are statistical levels that represent the average maximum and average minimum noise levels respectively, over the measurement intervals.

The L10 parameter is commonly used to measure noise produced by a particular intrusive noise source since it represents the average of the loudest noise levels produced by the source.

Conversely, the L90 level (which is commonly referred to as the background noise level) represents the noise level heard in the quieter periods during a measurement interval. The L90 parameter is used to set the allowable noise level for new, potentially intrusive noise sources since the disturbance caused by the new source will depend on how audible it is above the pre-existing noise environment, particularly during quiet periods, as represented by the L90 level.

The Leq parameter represents the average noise energy during a measurement period. This parameter is derived by integrating the noise levels measured over the 15-minute period. Leq is important in the assessment of environmental noise impact as it closely corresponds with human perception of a changing noise environment; such is the character of environmental noise.


4 EXISTING ACOUSTIC ENVIRONMENT

Acoustic monitoring was conducted at the site to establish the background noise levels which will be used as basis for this assessment.

4.1 BACKGROUND NOISE LEVELS

Background noise levels which will be used as a basis for this assessment are detailed in the following sections.

4.1.1 Measurement Equipment

Unattended noise monitoring was conducting using one Acoustic Research Laboratories Pty Ltd noise logger. The logger was programmed to store 15-minute statistical noise levels throughout the monitoring period. The equipment was calibrated at the beginning and the end of each measurement using a Rion NC-73 calibrator; no significant drift was detected. All measurements were taken on A-weighted fast response mode.

4.1.2 Measurement Location

An unattended noise monitor was installed in the South-Western Corner of the Project site. For a detailed location refer to Figure 1.

4.1.3 Measurement Period

Unattended noise monitoring was conducted from Wednesday, 25th July 2018 to Wednesday 1st August 2018.

4.1.4 Measured Background Noise Levels

The background noise levels established from the unattended noise monitoring are detailed in the table below.

4.1.5 Unattended Noise Measurements

NSW EPA’s RBL assessment procedure requires determination of background noise level for each day (the ABL) then the median of the individual days as set out for the entire monitoring period.

Appendix 1 provides the results of the unattended noise monitoring. Weather affected data was excluded from the assessment. The processed Rating Background Noise Levels (lowest 10th percentile noise levels during operation time period) are presented in the Table below.


Table 2 – Unattended Noise Monitor – Location 1 – Rating Background Noise Level

Date

Measured Rating Background Noise Level dB(A)L90

Day (7am-6pm)

Evening (6pm-10pm)

Night (10pm-7am Next Day)

Wednesday, 25th July 2018 - 46 -

Thursday, 26th July 2018 47 48 42

Friday, 27th July 2018 47 47 42

Saturday, 28th July 2018 47 46 41

Sunday, 29th July 2018 47 45 41

Monday, 30th July 2018 47 45 40

Tuesday, 31st July 2018 47 46 42

Wednesday, 1st August 2018 47 48 42

Median 47 46 42

4.1.6 Summarised Rating Background Noise Levels

Summarised rating background noise levels are presented below.

Table 3 - Summarised Rating Background Noise Level

Location Time of day Rating Background Noise Level

dB(A)L90(period)

Project Site

Day

(7am-6pm) 47

Evening

(6pm-10pm) 46

Night

(10pm-7am) 42


5 EXTERNAL NOISE INTRUSION ASSESSMENT

Site investigation indicates that the major external noise sources around project site include:

• Traffic noise impacts from Sunnyholt Road;

• Traffic noise impacts from George Street; and

• Rail noise impacts from the T1 and T5 Rail Corridor.

5.1 NOISE INTRUSION CRITERIA

A traffic and rail noise intrusion assessment has been conducted based off the requirements of the following acoustic noise criteria/standards;


• NSW Department of Planning and Environment’s Document – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline’;

• NSW Department of Planning and Environment’s document – ‘State Environmental Planning Policy (SEPP) (INFRASTRUCTURE) 2007”; and

• Australian and New Zealand AS/NZS 2107:2000 ‘Recommended design sound levels and reverberation times for building interiors’.

5.1.1 Blacktown Development Control Plan 2015

Part D: Development in Business Zones

4.17 Visual and Acoustic Privacy

Controls:

(5) “Development in close proximity to the rail corridor is to have regard to the following Railcorp documents (see: http://www.railcorp.info/about_railcorp/ environmental_guidelines):

(i) Interim Guidelines for Councils – Consideration of rail noise and vibration in the Planning Process, and

(ii) Guidelines for Applicants – Consideration of rail noise and vibration in the Planning Process. (6) Railcorp is to be notified of any development works occurring in close proximity to the rail corridor.” 5.1.2 NSW Department of Planning and Environment’s Document – ‘Developments near Rail

Corridors or Busy Roads – Interim Guideline’ (Rail and Traffic Noise Intrusion)

Section 3.5 of the NSW Department of Planning’s ‘Development near Rail Corridors and Busy Roads (Interim Guideline)’ states:

“The following provides an overall summary of the assessment procedure to meet the requirements of clauses 87 and 102 of the Infrastructure SEPP. The procedure covers noise at developments for both Road and Rail.


➢ If the development is for the purpose of a building for residential use, the consent authority must be satisfied that appropriate measures will be taken to ensure that the following LAeq levels are not exceeded:

- in any bedroom in the building: 35dB(A) at any time 10pm-7am

- anywhere else in the building (other than a garage, kitchen, bathroom or hallway): 40dB(A) at any time.”

5.1.3 NSW Department of Planning and Environment’s document – ‘State Environmental Planning Policy (SEPP) (INFRASTRUCTURE) 2007’ (Rail and Traffic Noise Intrusion)

RTA Map No. 10 of the traffic volume maps referenced by the SEPP (INFRASTRUCTURE) on the RTA website (see below), classifies the section of Sunnyholt Road and Prince Street where the development is located adjacent to as a road where a noise intrusion assessment is mandatory under clause 102 of the SEPP Infrastructure 2007. See RTA average annual daily road traffic volume map number 10 and the approximate location of the site below.

Figure 2 – RTA Map No. 10 and Approximate Location of Proposed Development

Approximate Location of 5-19 George Street

Project Site


Clause 87 - Impact of rail noise or vibration on non-rail development

(1) This clause applies to development for any of the following purposes that is on land in or adjacent to a rail corridor and that the consent authority considers is likely to be adversely affected by rail noise or vibration:

(a) a building for residential use,

(b) a place of public worship,

(c) a hospital,

(d) an educational establishment or child care centre.

(3) If the development is for the purposes of a building for residential use, the consent authority must not grant consent to the development unless it is satisfied that appropriate measures will be taken to ensure that the following LAeq levels are not exceeded:

(a) in any bedroom in the building--35 dB(A) at any time between 10.00 pm and 7.00 am,

(b) anywhere else in the building (other than a garage, kitchen, bathroom or hallway)--40 dB(A) at any time.

Clause 102

➢ If the development is for the purpose of a building for residential use, the consent authority must be satisfied that appropriate measures will be taken to ensure that the following LAeq levels are not exceeded:

- in any bedroom in the building: 35dB(A) at any time 10pm-7am

- anywhere else in the building (other than a garage, kitchen, bathroom or hallway): 40dB(A) at any time.”

5.1.4 Australian and New Zealand AS/NZS 2107:2016 ‘Recommended design sound levels and reverberation times for building interiors’ (Rail and Traffic Noise Intrusion)

Australian Standard AS 2107-2016: Recommended design sound levels and reverberation times for building interiors specifies allowable internal noise levels for internal spaces within residential and commercial buildings. Table 1, in Section 5 of AS 2107-2016, gives the following maximum internal noise levels for commercial buildings and residential buildings near major roads.


Table 4 – Recommended Design Sound Levels

Space /Activity Type Recommended Maximum Design Sound

Level dB(A) LAeq(Period)

Living Areas 40-45dB(A)LAeq(when in use)

Sleeping Areas 35-40dB(A)LAeq(10pm-7am)

Bathrooms, Ensuites, Laundry 45dB(A)LAeq(when in use)

5.1.5 Summary of Criteria

The governing project criteria is presented in the Table 5 below based on requirements above.

Table 5 – Summary of Internal Noise Level Criteria

Space/Activity Type Internal Traffic Noise Criteria dB(A)LAeq(period)

Bedroom 35dB(A)LAeq(9hour)

Living Space 40dB(A)LAeq(15hour)

Bathrooms, Ensuites, Laundry 45dB(A)LAeq(When in use)

5.2 EXTERNAL NOISE MEASUREMENTS

This section of the report details noise measurements conducted at the site to establish traffic and rail noise levels impacting the development.

5.2.1 Noise Measurements

Short term and long term noise measurements have been carried out by this office.

5.2.1.1 Measurement Equipment

➢ Short term noise measurements: Attended short term measurements of traffic noise were undertaken by this office, to supplement the unattended noise monitoring. Measurements were conducted using a Norsonic 140 Sound Analyser. The analyser was set to fast response and calibrated before and after the measurements using a Norsonic Sound Calibrator type 1251. No significant drift was noted.

➢ Long term noise measurements: Unattended noise monitoring was conducting using one Acoustic Research Laboratories Pty Ltd noise logger. The logger was programmed to store 15-minute statistical noise levels throughout the monitoring period. The equipment was calibrated at the beginning and the end of each measurement using a Rion NC-73 calibrator; no significant drift was detected. All measurements were taken on A-weighted fast response mode.


5.2.1.2 Measurement Locations

Short Term Measurement Locations:

➢ Attended Traffic Noise Measurements were conducted in two locations, see below for a detailed description:

o Location 1: Sunnyholt Road, noise measurements had a 180° view of Sunnyholt Road and were 3m from the kerb.

o Location 2: George Street, noise measurements had a 180° view of George Street and were 3m from the kerb.

Long Term Measurement Location:

Unattended Traffic/Rail Noise Measurements: An unattended noise monitor was installed in the South-Western corner of the project site. For a detailed location refer to Figure 1.

5.2.1.3 Measurement Period

Unattended noise monitoring was conducted from Wednesday, 25th July 2018 to Wednesday, 1st August 2018.

Attended noise measurements were undertaken between the hours of 3:30pm and 5:00pm on Wednesday, 1st August 2018.

5.2.1.4 Measured Traffic/Rail Noise Levels

Attended and Unattended noise measurements have been summarised below for each location.

5.2.1.5 Unattended Traffic/Rail Noise Monitoring

The following table presents the results of the unattended traffic/rail noise monitoring.

Table 6 – Unattended Noise Monitor - Location 1 – Traffic/Rail Noise Measurements

Date

Measured Traffic Noise Level dB(A)LAeq

Day (7am-10pm)

Night (10pm-7am)

Wednesday, 25th July 2018 - -

Thursday, 26th July 2018 59 55

Friday, 27th July 2018 59 54

Saturday, 28th July 2018 58 53

Sunday, 29th July 2018 58 51

Monday, 30th July 2018 59 53

Tuesday, 31st July 2018 58 54

Wednesday, 1st August 2018 58 54

Logarithmic Average 59 53


5.2.1.6 Attended Traffic Noise Measurements

Attended traffic noise measurements are detailed below.

Table 7 – Attended Traffic Noise Measurements

Location Time of Measurement Measured Noise Level

dB(A)LAeq

Sunnyholt Road (See Figure 1) 3m from kerb

180° view of the road 3:30pm – 5:00pm Wednesday, 1st August 2018

73dB(A)

George Street (See Figure 1) 3m from kerb

180° view of the road

61dB(A)

5.2.1.7 Measured Rail Noise Levels

Attended noise measurements have been summarised below.

5.2.1.8 Attended Rail Noise Measurements

The following table presents the results of the attended rail noise measurements

5.2.1.9 Summarised External Noise Levels

The existing traffic and rail noise levels listed in the tables below were determined based on the unattended noise monitoring and attended noise measurement data.

Table 8 – Measured Existing Traffic Noise Levels

Location

Summary of Measured Existing Traffic Noise Levels

Daytime (7am-10pm)

dB(A)LAeq(15hour)

Night time (10pm-7am)

dB(A)LAeq(9hour)

Sunnyholt Road (See Figure 1) 3m from kerb


73dB(A)LAeq(15hour) 67dB(A)LAeq(9hour)*

George Street (See Figure 1) 3m from kerb


61dB(A)LAeq(15hour) 55dB(A)LAeq(9hour)*

*Adjusted based off unattended noise monitoring


Table 9 – Measured Existing Rail Noise Levels

Location

Summary of Measured Existing Rail Noise Levels

Daytime (7am-10pm)

dB(A)LAeq

Night time (10pm-7am)

dB(A)LAeq

Southern Boundary of the Project Site

180° view of the T1 & T5

Rail Corridor

54dB(A)LAeq(15hour) 48dB(A)LAeq(9hour)

Note: All rail noise measurements had a full 180° view of the rail corridor and the measurement results have been calculated without any barrier attenuation.

5.3 NOISE INTRUSION ANALYSIS

Traffic and Rail noise intrusion into the proposed development was assessed using the measured and predicted noise levels above.

Calculations were undertaken taking into account the orientation of windows, barrier effects (where applicable), the total area of glazing, facade transmission loss and room sound absorption characteristics. In this way, the likely interior noise levels can be predicted.

5.4 RECOMMENDED CONSTRUCTIONS

5.4.1 Glazed Windows and Doors

The following constructions are recommended to comply with the project noise objectives. Aluminium framed/sliding glass doors and windows will be satisfactory provided they meet the following criteria. All external windows and doors listed are required to be fitted with Q-lon type acoustic seals. (Mohair Seals are unacceptable).

Thicker glazing may be required for structural, safety or other purposes. Where it is required to use thicker glazing than scheduled, this will also be acoustically acceptable.

The recommended constructions are listed in the table below.


Table 10 – Recommended Glazing Construction

Tower Levels Façade Space Recommended

Construction Acoustic

Seals

North-East

2 - 10 South

(Prince Street)

Living Room 12.38mm Laminated

Yes

Bedroom 10.38mm Laminated/100mm

Airgap/6mm Float

11 - 17 Living Room

12.38mm Laminated Bedroom

2 - 17 North Living Room


2 - 17

East

(Sunnyholt Road)

Living Room 10.38mm Laminated/100mm

Airgap/6mm Float Bedroom

West Living Room


North-West 2 - 17

South

(Prince Street)

Living Room 10.38mm Laminated

Bedroom

North Living Room

10mm Float Bedroom

East Living Room


West Living Room

Bedroom

It is recommended that only window systems having test results indicating compliance with the required ratings obtained in a certified laboratory be used where windows with acoustic seals have been recommended.

In addition to complying with the minimum scheduled glazing thickness, the Rw rating of the glazing fitted into open-able frames and fixed into the building opening will require the use of acoustic seals around the full perimeter of open-able frames and the frame will need to be sealed into the building opening using a flexible sealant.


Table 11 - Minimum Rw of Glazing (with Acoustic Seals)

Glazing Assembly Minimum Rw of Installed Window

10mm Float 33

10.38mm Laminated 35

12.38mm Laminated 37

10.38mm Laminated/100mm Airgap/6mm Float 43

5.4.2 External Wall Construction

External walls will be constructed from concrete or masonry elements, this proposed structure will not require any further acoustic upgrading.

In the event that any penetrations are required through the external skin, an acoustic grade sealant should be used to minimise all gaps.

5.4.3 External Roof & Ceiling Construction

External roof will be constructed from concrete or masonry elements, this proposed structure will not require any further acoustic upgrading.

In the event that any penetrations are required through the external skin, an acoustic grade sealant should be used to minimise all gaps.

5.4.4 Entry Doors

External opening entry doors shall have glazing thicknesses equal to those recommended in section 5.4.1 Recommended Glazing Construction and are to have Raven RP10 to the top and sides, and Raven RP38 to the underside of the door.


5.4.5 Mechanical Ventilation

With respect to natural ventilation of the dwelling, the NSW Department of Planning document “Development near Busy Roads and Rail Corridors - Interim Guideline” dictates that:

“If internal noise levels with windows or doors open exceed the criteria by more than 10dB(A), the design of the ventilation for these rooms should be such that occupants can leave windows closed, if they so desire, and also to meet the ventilation requirements of the Building Code of Australia.”

With windows open, the allowable internal noise goal is permitted to be 10dB(A) higher than when the windows are closed (i.e. – allowable level in bedrooms becomes 45dB(A), and 50dB(A) in living rooms).

The western façades of both residential towers can have their windows open, however; in order to achieve suitable internal noise levels; windows need to be closed on ALL remaining facades.

Although windows on the façades can be openable, the required internal noise level is only achieved when the windows are closed.

Should any supplementary fresh air (ventilation system or other) be required, it should be acoustically designed to ensure that the acoustic performance of the acoustic treatments outlined above are not reduced and does not exceed Council criteria for noise emissions to nearby properties.


6 RAILWAY VIBRATION ASSESSMENT

Trains induce ground borne vibration that is transmitted through the subsoil. These vibrations can be perceptible close to railways, as tactile vibrations and as structure borne noise.

6.1 PROJECT VIBRATION OBJECTIVES

A rail vibration assessment has been conducted based off the requirements of the following acoustic noise criteria/standards;




• NSW Department of Planning’s – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline’.

6.1.1 Tactile Vibration

Human comfort is normally assessed with reference to the British Standard BS 7385 Part 2 1993 or Australian Standard AS 2670.2 1990.

The Interim Guideline references the DECCW Assessing Vibration- A technical guideline which recommends that habitable rooms should comply with the criteria therein which is in line with the requirements of British Standard BS 6472:1992 “Evaluation of Human Exposure to Vibration in Buildings (1Hz to 80Hz)”.

British Standard BS 6472:1992 “Evaluation of Human Exposure to Vibration in Buildings (1Hz to 80Hz)” is recommended by the RIC’s and SRA’s Interim Guidelines for Councils “Consideration of rail noise and vibration in the planning process” as this standard includes guidance for the assessment of human response to building vibration including intermittent vibrations such as that caused by trains.

Human response to vibration has been shown to be biased at particular frequencies, which are related to the orientation of the person. This standard provides curves of equal annoyance for various orientations. These curves are applied as correction filters such that an overall weighted acceleration level is obtained. As the orientation of the resident is unknown or varying the weighting filter used is based on the combined base curve as given in ISO 2631 & Australian Standard 2670 “Evaluation of Human Exposure to Vibration and Shock in Buildings (1 to 80Hz)” which represents the worst case of the X, Y and Z axes. Filtered measurements are made in all three co-ordinate axes and the highest value axis used.

This standard assesses the annoyance of intermittent vibration by using the Vibration Dose Value (VDV). Alternatively the VDV may be estimated by the eVDV which is derived by a simpler calculation using an empirical factor. The VDV or eVDV is calculated for the two periods of the day being the “Daytime” (6am-10pm) and “Night time” (10pm-6am). The overall value is then compared to the levels in Table 16. For this project the aim will be for a low probability of adverse comment.


Table 12 - Vibration Dose Values (m/s1.75) above which various degrees of adverse comment may be expected in residential buildings.

Place Low Probability of adverse comment

Adverse comment possible

Adverse comment probable

Residential buildings 16hr day (Daytime)

0.2 to 0.4 0.4 to 0.8 0.8 to 1.6

Residential buildings 8hr night (Night time)

0.13 0.26 0.51

6.1.2 Structure Borne Noise

The Department of Planning ‘Development Near Rail Corridors and Busy Road – Interim Guideline’ only requires a structure borne noise assessment to be conducted where buildings or adjacent lands are over railway tunnels. Section 3.6.2 of the standard states the following:

“…Where buildings are constructed over or adjacent to land over tunnels, ground-born noise may be present without the normal masking effects of air born noise. In such cases, residential buildings should be designed so that the 95th percentile of train pass-bys complies with a ground-born LAmax noise limit of 40 dB(A)(daytime and 35 dB(A) (nigh time)measured using the “slow” response time setting on a sound level meter.”

6.2 RAIL VIBRATION MEASUREMENTS

Rail vibration measurements were conducted in line with the future proposed southern façade, which is the potentially worst affected façade. For a detailed location, refer to Figure 1.

Attended Rail vibration measurements were conducted on Wednesday, 1st August 2018. A Svantek 958 Vibration Analyser was used for the vibration measurements. The analyser was fitted with three Svantek SV80 accelerometers.

The measured vibration levels, duration of train passby and the number of rail movements per hour were used to determine the overall vibration dose (VDV) at the proposed development for both daytime and night time periods. The results are presented the table below.

Table 13 - Vibration Dose Values

Time Period Calculated VDV

m/s1.75 Criteria VDV

m/s1.75 Compliance

Day (7am – 10pm) ≤0.2 0.2 to 0.4 Yes

Night (10pm -7am) ≤0.13 0.13 Yes

*See section 5.3 below.

In the event the future train use increases, say by 10%, predicted eVDV will not increase significantly (no more than approximately 0.005 more than the levels predicted in the table above) and will not impact recommended vibration isolation treatments.


6.2.1 Structure borne noise generated by rail movements

Vibration measurements were also carried out at locations of the proposed habitable space that face away from the rail corridor. The structure borne noise generated by the vibration has been predicted below based on the measured vibration level from 1Hz to 10K Hz.

Table 14 –Predicted Structure Borne Noise dB(A) LMax

Location Predicted Structure Borne Noise Level

Criteria Compliance

Level 3 - Residential Apartments

≤35dB(A)LMax

35dB(A) LMax Yes

6.3 FINDINGS

Measurements above indicated that the overall vibration dose (VDV) at the proposed development for both daytime and night time period comply with the requirements of British Standard BS 7385 Part 2 1993 or Australian Standard AS 2670.2 1990.

Structure borne noise generated by the rail movements to the residential apartments located on Level 3 of the proposed development complies with the requirements of The Department of Planning ‘Development Near Rail Corridors and Busy Road – Interim Guideline’ therefore no additional vibration isolation is required for the proposed development.


7 NOISE EMISSION ASSESSMENT

The noise emissions from the project site shall comply with the requirements of the following;

• Blacktown Development Control Plan 2015; and


7.1 NOISE CRITERIA

7.1.1 Blacktown Development Control Plan 2015

Part D: Development in the Business Zones

4.17 Visual and Acoustic Privacy

(3) “No electrical, mechanical or hydraulic plant or equipment shall generate a noise level greater than 5dB(A) above the ambient L90 sound level at the boundaries of any allotment at any time of day.”

7.1.2 NSW EPA document – ‘Noise Policy for Industry (NPfI) 2017’

The NSW EPA Noise Policy for Industry (NPfI) 2017, has two criteria which need to be satisfied; namely the Intrusiveness noise level criteria and the Project amenity noise level criteria. The project noise trigger level is then established based on the lower of the intrusiveness and project amenity levels.

Noise levels are to be assessed at the property boundary or nearby dwelling, or at the balcony or façade of an apartment.

7.1.2.1 Intrusiveness Noise Level Criteria

The guideline is intended to limit the audibility of noise emissions at residential receivers and requires that noise emissions measured using the Leq descriptor do not exceed the background noise level by more than 5dB(A). Where applicable, the intrusive noise level should be penalised (increased) to account for any annoying characteristics such as tonality.

Background noise levels adopted are presented in Section 4.1.6. Noise emissions from the site should comply with the noise levels presented below when measured at nearby property boundary.


Table 15 – Intrusiveness Noise Level Criteria

Location Period/Time Intrusiveness Noise Level Criteria

dB(A)LAeq(15min)

Nearby Residences

Day

(7am-6pm) 52

Evening

(6pm-10pm) 51

Night

(10pm-7am) 47

7.1.2.2 Project Amenity Noise Level Criteria

The guideline is intended to limit the absolute noise level from all noise sources to a level that is consistent with the general environment.

The NSW EPA noise policy for industry sets out acceptable noise levels for various localities. Table 2.2 on page 11 of the policy indicates 3 categories to distinguish different residential areas. They are rural, suburban, urban. This site is categorised by urban receivers.

For the purposes of this condition:

• Day is defined as the period from 7am to 6pm Monday to Saturday and 8am to 6pm Sundays and Public Holidays;

• Evening is defined as the period from 6pm to 10pm.

• Night is defined as the period from 10pm to 7am Monday to Saturday and 10pm to 8am Sunday and public holidays.

The project amenity noise level is calculated by taking the recommended amenity noise level (as presented in table 2.2 on pager 11 of the policy), subtracting 5dB(A) and then adding 3dB(A) to convert from LAeq, period to a LAeq, 15 minute descriptor. The project amenity noise level criteria are presented in the table below.

Table 16 – Project Amenity Noise Level Criteria

Location Period/Time Project Amenity Noise Level Criteria

dB(A)LAeq(15min)

Nearby Residences – Urban Receiver

Day 7am-6pm)

58

Evening (6pm-10pm)

48

Night (10pm-7am)

43


7.1.2.3 Project Noise Trigger Level

The project noise trigger level (as outlined in section 2.1 of the policy) is the lower of the intrusiveness and project amenity noise levels. The project noise trigger levels are presented in the table below.

Table 17 – Project Noise Trigger Level Criteria

Location Period/Time Project Noise Trigger Level Criteria

dB(A)LAeq(15min)

Nearby Residences

Day

(7am-6pm) 52

Evening

(6pm-10pm) 48

Night

(10pm-7am) 43

7.1.3 Sleep Arousal Criteria

Potential sleep arousal impacts should be considered for noise generated before 7am or after 10pm.

Short duration, intermittent noise events (such as cars driving by) are typically assessed for potential sleep disturbance.

Potential impacts are assessed using the recommended procedure in the NSW EPA Noise Policy for Industry. As recommended in the policy, when assessing potential sleep arousal impacts, a two stage test is carried out:

• Step 1 - An assessment should be conducted to determine if noise levels at a residential location during the night time period (10pm-7am) exceed:

o LAeq, 15min 40dB(A) or the prevailing RBL (rating background noise level) plus 5 dB, whichever is greater, and/or

o LAFmax 52 dB(A) or the prevailing RBL plus 15 dB, whichever is greater.

The policy does not explicitly state where noise impacts should be assessed within the residential location. For the purposes of this assessment, noise impacts will be assess at the location immediately outside a resident’s bedroom window. If the noise events are compliant with this criterion, then sleep arousal impacts are unlikely and no further analysis is needed. This is consistent with the Noise Guide for Local Government. The criteria is set out below.

Table 18 – Sleep Arousal Criteria

Location Background Noise Level

(10pm-7am)

Sleep Arousal Criteria dB(A)

Nearby Residents 42dB(A)L90 47dB(A)LAeq(15min)

57dB(A)LMax


• Step 2 - If there are noise events that could exceed the step 1 criteria, then a more detailed assessment of sleep arousal impact is required to be carried out taking into account the level and frequency of noise events during the night, existing noise sources, etc. This test takes into account the noise level and number of occurrences of each event with the potential to create a noise disturbance. As is recommended in the EPA Noise Policy for Industry, this more detailed sleep arousal test is conducted using the guidelines in the EPA Road Noise Policy. Most relevantly, the Road Noise Policy states:

For the research on sleep disturbance to date it can be concluded that:

o Maximum internal noise levels below 50-55dB(A) are unlikely to awaken people from sleep.

o One to two noise events per night with maximum internal noise levels of 65-70dB(A) are not likely to affect health and wellbeing significantly.

7.2 NOISE EMISSION ASSESSMENT

7.2.1 Mechanical Plant Noise

Detailed plant selection has not been undertaken at this stage, as plant selections have not been determined. Detailed acoustic review should be undertaken at CC stage to determine acoustic treatments to control noise emissions to satisfactory levels. Satisfactory levels will be achievable through appropriate plant selection and location and, if necessary, standard acoustic treatments such as duct lining, acoustic silencers and enclosures.

Noise emissions from all mechanical services to the closest residential receivers should comply with the requirements of section 7.1.

7.2.2 Ground Floor to Level 1 Tenancies

There is currently no operator or fit out plans available at this stage. A separate DA report is recommended once the detailed operation/floor plans are ready.


8 CONCLUSION

This report presents an acoustic assessment of noise impacts associated with the proposed new mixed-use development to be located at 5-19 George Street, Blacktown.

Provided that the treatments set out in section 5 of this report are employed, internal noise levels shall comply with the requirements below:


• NSW Department of Planning and Environment’s document – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline 2008’;

• NSW Department of Planning and Environment’s document – ‘State Environmental Planning Policy (SEPP) (INFRASTRUCTURE) 2007”; and

• Australian and New Zealand AS/NZS 2107:2016 ‘Recommended design sound levels and reverberation times for building interiors’.

Structure borne noise and vibration impacts from the rail corridor have been assessed in this report, we can confirm that the proposed building can comply with the following documents below:




• NSW Department of Planning’s – ‘Developments near Rail Corridors or Busy Roads – Interim Guideline’.

External noise emissions criteria have been setup in this report to satisfy the requirements from the following documents;

• Blacktown Development Control Plan 2015; and


Please contact us should you have any further queries.

Yours faithfully,

Acoustic Logic Consultancy Pty Ltd Shane Nichols


APPENDIX ONE – UNATTENDED NOISE MONITORING DATA – FRONT OF THE SITE









Documents

5-19 George Street, Blacktown · \\acousticlogic.local\data\Australia\Jobs\2018\20181009\20181009.2\20190613SNA_R1_DA Acoustic Assessment.docx 2 DOCUMENT CONTROL REGISTER Project