Sydney Metro Chatswood to Sydenham – TSE Works 01.06.04 F03... · SYDNEY METRO CHATSWOOD TO...

Acoustics

Vibration

Structural Dynamics

Sydney Melbourne Brisbane Gold Coast Kuwait

Renzo Tonin & Associates ABN 29 117 462 861

Level 1/418A Elizabeth St SURRY HILLS NSW 2010 | PO Box 877 STRAWBERRY HILLS NSW 2012

P (02) 8218 0500 F (02) 8218 0501 [email protected] www.renzotonin.com.au

Sydney Metro Chatswood to Sydenham – TSE Works - Spoil Loading

and Haulage

1 Introduction

1.1 Overview of works

This technical memorandum is an addendum to the report Construction Noise and Vibration Impact

Statement: Barangaroo Construction Site (Barangaroo CNVIS) and has been prepared on behalf of John

Holland CPB Ghella Joint Venture (JHCPBG) in accordance with the Construction Noise and Vibration

Management Plan (CNVMP) [SMCSWTSE-JCG-TPW-EM-PLN-002012] for the Design and Construction of

the Tunnel and Station Excavation (TSE) Works of the Sydney Metro City & Southwest Project (the

Project).

Spoil is currently being transported from the Barangaroo site via a combination of truck and barge, with

spoil unloaded directly on to trucks at Clyde. JHCPBG is proposing to modify the existing spoil removal

operations through direct spoil haulage by road from the Barangaroo construction site. The proposed

operations would occur during the standard daytime period, E2 evening period (8pm to 10pm) and

night-time period (10pm to 7am), seven days per week.

This memorandum has been prepared to address the potential construction noise and vibration impacts

from the spoil loading and haulage activities. These works have been assessed in combination with

other works occurring at the site, which have previously been assessed in the Barangaroo Construction

Site CNVIS. The construction works are detailed in Section 2.1 below.

1.2 Justification for out of hours construction works

Under EPL20971 L4.4 (a) and (b), tunnelling activities and tunnelling ancillary surface supports works and

haulage and delivery of spoil and materials are permitted to occur 24/7. The Special Dictionary defines

Tunnelling ancillary surface support works as: “surface works and activities that are required to be

25 November 2019

TH511-02 01.06.04 F03 BN CNVIS Add3 Spoil Haulage (r4)

John Holland CPB Ghella JV

Level 9, 50 Bridge Street,

Sydney NSW 2000

RENZO TONIN & ASSOCIATES 25 NOVEMBER 2019

JOHN HOLLAND CPB GHELLA JV

TH511-02 01.06.04 F03 BN CNVIS ADD3 SPOIL HAULAGE (R4) 2 SYDNEY METRO CHATSWOOD TO SYDENHAM – TSE WORKS

SPOIL LOADING AND HAULAGE

undertaken outside of standard construction hours outlined in Condition L4.1 in order to maintain 24/7

tunnelling activities including, but not necessarily limited to, plant and equipment maintenance, and spoil,

water, grout and ventilation management.’

OOH spoil haulage direct from the Barangaroo construction site is required in order to maintain 24/7

tunnelling activities. Failure to load out spoil out of hours would result in the spoil storage areas

becoming spoil bound and would prevent tunnelling from occurring 24/7.

2 Construction noise assessment

2.1 Construction activities

Key details regarding the location and layout of the noise generating plant and equipment that will

operate during spoil haulage operations were informed by the Design and Construction Teams. Table

2.1 presents the list of plant and associated sound power levels that are proposed to be used for the

spoil loading and haulage operations.

Table 2.1: Construction activities and applicable sound power levels

Activity

Key plant and

equipment Day / E1 E2 / Night

Sound power level,

dB(A) Comments

7am - 8pm 8pm - 7am LAeq LAmax

Spoil

loading and

haulage

Caterpillar 966H

wheeled loader

1 1 104 120 Loading truck and dogs near

stockpile area

Truck and dog

haulage

8 p.h. 8 p.h. 106 110

The location of the truck and dog route through the construction site and loading operations are shown

on Figure 2-1 following. The spoil haulage operations would operate currently with Stage 5 construction

activities, as previously assessed in the Barangaroo Construction Site CNVIS.

2.2 Predicted construction noise levels

The results of the spoil haulage and Stage 5 construction activities for the Day/E1 period and Night/E2

period are shown in Table 2.2 and Table 2.3 following. The predicted noise levels for current Stage 5

construction activities are presented, as is the predicted noise from spoil truck movement on site in

isolation (i.e. with no other construction activity on site. Finally the cumulative construction noise level

is presented (Stage 5 with spoil haulage by road). The results are presented for comparison with the

Noise Management Levels (NMLs) established in the Barangaroo Construction Site CNVIS.

Figure 2-1: Construction activities and locations

Stockpiling and loading area

Truck and dog route

Truck and dog site access

Table 2.2: Predicted construction noise levels at the closest noise sensitive receivers Day/E1 (7am to 8 pm)

Address Type of receiver

Assumed external to

internal noise reduction,

dB(A)

Predicted external construction noise level, dB(A) LAeq,15min External

equivalent NML,

dB(A) -

Condition E37

Above PPA

condition E37

external

equivalent

NMLs ? S5 Spoil Haulage S5 + Spoil Haulage

17 EDWARD STREET BALMAIN EAST Residential 10 55 43 55 70 Yes

40-40A HIGH STREET MILLERS POINT Residential 10 72 54 72 70 No

65-69 KENT STREET MILLERS POINT Residential 10 69 51 69 70 Yes

89-105 KENT STREET MILLERS POINT Hotel 20 66 48 66 80 Yes

35-37 BETTINGTON STREET MILLERS POINT Hotel 20 63 49 63 80 Yes

24 MUNN STREET BARANGAROO Residential 10 61 49 61 70 Yes

Table 2.3: Predicted construction noise levels at the closest noise sensitive receivers Night/E2 (8pm to 7am)

Address Type of receiver

Assumed external to

internal noise reduction,

dB(A)

Predicted external construction noise level, dB(A) LAeq,15min External

equivalent NML,

dB(A) -

Condition E41

Compliance with

E41 condition?

S5 Spoil Haulage S5 + Spoil Haulage

17 EDWARD STREET BALMAIN EAST Residential 10 45 43 48 55 Yes

40-40A HIGH STREET MILLERS POINT Residential 10 47 54 55 55 Yes

65-69 KENT STREET MILLERS POINT Residential 10 47 51 53 55 Yes

89-105 KENT STREET MILLERS POINT Hotel 20 46 48 50 65 Yes

35-37 BETTINGTON STREET MILLERS POINT Hotel 20 48 49 52 65 Yes

24 MUNN STREET BARANGAROO Residential 10 45 49 51 55 Yes





2.3 Discussion of results

2.3.1 Day/E1 (7am to 8pm)

From Table 2.2 above, the construction noise levels during the day period and predicted to be below the

PPA Condition E37 external equivalent NMLs at the nearest noise sensitive receivers for the spoil

haulage operations. Residential receivers on High Street, which were excepted to be above the PPA

Condition E37 external equivalent NMLs due to the Stage 5 operations, have been previously addressed

in the Barangaroo CNVIS (ref: TH511-02 01.06.04 F01 BN CNVIS (r15)).

2.3.2 Night/E2 (8pm to 7am)

From Table 2.3 above, the construction noise levels during the night period are predicted to comply with

the PPA Condition E41 external equivalent NMLs at the nearest noise sensitive receivers for the spoil

haulage and Stage 5 operations.

Based upon the noise monitoring of spoil loading into trucks undertaken by RTA, the highest LA,Max noise

levels associated with the spoil loading operations would be from the wheeled loader dumping the first

spoil load into the empty truck bed. The predicted LAmax noise levels associated these noise events could

exceed the sleep disturbance screening level at the nearest residential receivers, however they are

predicted to be well below the sleep disturbance ‘awakening reaction’ internal NML of 55 dB(A) LAmax.

Considering that the number of spoil loading operations at night (i.e. 8 trucks per hour per night) during

the night-time period and assuming 2-3 maximum noise events per truck, there could be up to 216

maximum noise level events above the sleep disturbance screening levels of 55dB(A) LA,Max at night.

Long-term noise monitoring was conducted at 26A High Street, Millers Point from 31st August 2015 to

14th September 2015 prior to the commencement of construction works (reference monitoring ID: B.12

from Chatswood to Sydenham Environmental Impact Statement, Technical paper 2: Noise and Vibration,

May 2016). The monitoring showed maximum noise levels ranging from 55 to 85 dB(A) LAmax at night. As

maximum noise levels associated with the spoil loading on site are predicted to be from 55 to 64 dB(A)

LAmax at the closest noise sensitive receivers along High Street, they are lower than what nearby residents

would have experienced prior to the commencement of TSE construction works at Barangaroo.

2.4 Noise mitigation and management

Based upon the assessment, there are no additional noise mitigation or management measures

applicable beyond those outlined in the Barangaroo CNVIS for the works reviewed in this technical

memorandum.

With regard to the loading of spoil into spoil trucks and the potential for sleep disturbance, noise

reductions can be achieved by carefully placing spoil into the truck, instead of dropping the material

from height. It should also be noted that given the high moisture content and ‘slurry’ consistency of the under harbour spoil this will significantly reduce noise levels during loading. Based on RT&A site

measurements, gentle placement of spoil material into an empty truck may further reduce

instantaneous noise levels by up to 10 dB(A).





2.4.1 Noise monitoring

Attended noise monitoring will be undertaken to verify that the construction activities are consistent

with the assessed noise modelling scenarios and that noise levels resulting from construction works are

not higher than the levels predicted in this memorandum or the relevant NMLs. Attended monitoring

on private property is subject to obtaining the property owner/occupier’s consent (where required).

Attended noise monitoring will be undertaken in the NCAs most impacted by the works. A minimum of

one representative receiver in each NCA is to be monitored. The nominated monitoring locations are

identified in Table 2.4, and have been selected as they present the best opportunity to validate the

predicted noise levels.

Table 2.4: Nominated verification monitoring locations

NCA Nominated receiver address Monitoring location at 1 m from

BN_02 24 MUNN STREET BARANGAROO Southern facade

BN_03 40-40A HIGH STREET MILLERS POINT Western facade

BN_06 17 EDWARD STREET BALMAIN EAST Eastern facade

OSR 89-105 KENT STREET MILLERS POINT Western facade

Note: Monitoring on private property is subject to owner consent and where relevant, occupier consent. If property access is

denied, monitoring will still be carried out outside property boundaries.

If verification monitoring shows that the external noise levels are consistently above the predicted levels,

investigation should be undertaken to understand the cause of the exceedance. In addition, if the

verification monitoring shows that the external noise levels are also consistently above the equivalent

external NML at night, more detailed analysis should be conducted to quantify the building façade loss

and the potential of being above the internal NML of 45dB(A) LAeq,15min specified in PPA Conditions

E41/E42. If internal noise levels are found to be above 45dB(A) LAeq,15min, additional mitigation and

management measures will be implemented in accordance with Sydney Metro City and South West

Noise and Vibration Strategy.

In addition, in order to verify noise levels LAeq,15min from the spoil haulage operations at Barangaroo

worksite, noise monitoring will be undertaken at a representative intermediate monitoring location with

direct line-of-sight to the works (Figure 2-2). This will assist in identifying and removing the contribution

from concurrent unrelated Sydney Metro noise sources. Maximum noise levels LAMax will be measured at

this location to confirm maximum sound power levels specified in Table 2.1. The noise targets at this

location are presented in Table 2.5.

Table 2.5: Noise targets at intermediate monitoring location

Noise descriptors Noise target Comments

LAeq,15min 58 dB(A) Spoil loading and haulage

LAmax 66 dB(A) Front-end loader loading trucks

LAmax 73 dB(A) Trucks exiting/entering worksite





If verification monitoring shows that the noise levels are consistently above the target levels,

investigation would be undertaken to understand the cause of the exceedance. Additional feasible and

reasonable mitigation measures may need to be considered to reduce potential impacts.

Figure 2-2: Nominated intermediate monitoring location

2.4.2 Consultation with affected receivers (PPA Condition E33)

As outlined in Section 5.4.1 of the Barangaroo CNVIS, consistent with requirements in PPA Conditions

E33, JHCPBG has commenced and will continue to consult with potentially affected stakeholders

including business and residential receivers regarding specific mitigation measures applicable to the

construction works at the Barangaroo site.

Intermediate

monitoring location





3 Construction related road traffic assessment

Details of the spoil haulage routes were provided by JHCPBG. The primary inbound and outbound

construction spoil haulage routes would access the Barangaroo worksite via Hickson Road from the

Western Distributor. In addition, there are proposed secondary inbound and outbound haul routes

which would access the site from the Harbour Bridge as shown in Figure 3-1 below.

Based on a review of the proposed routes, the most impacted residences would be those on Hickson

Road for the primary and secondary routes, and Napoleon Street for the secondary routes.

Traffic counts for Hickson Road and Napoleon Street over the week of 9 December 2017 to 15

December 2017 (i.e. prior to construction commencement) were provided by JHCPBG and used to

predict the relative increase in road traffic noise levels from the project. Those traffic volumes are

detailed in Table 3.1 below.

Table 3.1: Traffic noise modelling data - existing road network

Site Road

Road

category

(RNP)

15-hour day period (7am-10pm) 9-hour night period (10pm-7am)

Existing Project Existing Project

TOTAL HV TOTAL HV TOTAL HV TOTAL HV

Barangaroo Hickson Road Arterial 9768 634 720 480 1614 157 204 144

Barangaroo Napoleon Street Sub-arterial 6822 508 120 120 1379 119 72 72

Figure 3-1: Construction spoil haulage routes





3.1 Methodology

Noise predictions are based on a method developed by the UK Department of Environment entitled

“Calculation of Road Traffic Noise (1988)” known as the CoRTN (1988) method. This method has been

adapted to Australian conditions and extensively tested by the Australian Road Research Board and as a

result it is recognised and accepted by the NSW EPA. The model predicts noise levels for steady flowing

traffic and noise from high truck exhausts is also taken into account.

3.2 Predicted increase in traffic noise levels

Table 3.2 below displays the predicted increase in traffic noise for a representative worst case residence

along each road of the construction routes.

Table 3.2: Predicted increase in traffic noise for representative receivers along construction routes

Road

Increase

Day (7am to 10pm) Night (10pm to 7am)

dB(A) LAeq(15h) dB(A) LAeq(9h)

Hickson Road 1.5 1.8

Napoleon Street 0.5 1.2

From Table 3.2, all residences are predicted to comply with the construction road traffic noise goal of no

more than 2 dB(A) increase in road traffic noise. The predicted increase in road traffic noise from

construction related road traffic complies with the noise goals detailed in the Barangaroo CNVIS.

4 Other assessments

The following other assessments are covered in the Barangaroo CNVIS:

• Construction vibration;

• Ground-borne noise impacts;

• Ground-borne noise impacts.

There are no additional recommendations applicable for the works reviewed in this technical

memorandum.

5 Conclusion

This technical memorandum is an addendum to the report Barangaroo CNVIS to review the potential

noise and vibration impacts for the proposed spoil loading and haulage activities associated with the

transportation of spoil from the Barangaroo construction site via truck. This would replace the spoil

transportation operations via a combination of truck and barge, previously assessed in the CNVIS.





The proposed works have been assessed in combination with the Stage 5 construction works, which

have previously been assessed in the Barangaroo CNVIS.

The assessment has found that construction noise levels are predicted to comply with the PPA Condition

E37 and Condition E41 NMLs at the nearest noise sensitive receivers. Furthermore, construction related

road traffic noise levels are predicted to comply with the noise goals identified in the Barangaroo

CNVIS.

Noise monitoring will be undertaken on a regular basis to verify compliance with the predicted noise

levels and NMLs.

The consultation and notification process in accordance with PPA Condition E33 will continue and from

now on will also include these additional out-of-hour works.





Document control

Date Revision history Non-issued

revision

Issued

revision Prepared Instructed Authorised

04.09.2019 Draft 0 1 R. Phillips T. Gowen T. Gowen

06.09.2019 Final 2 R. Phillips T. Gowen T. Gowen

19.11.2019 Update following AA’s

comments

- 3 M. Tabacchi M. Tabacchi T. Gowen

25.11.2019 Update following additional

AA’s comments

- 4 M. Tabacchi M. Tabacchi T. Gowen

Important Disclaimer:

The work presented in this document was carried out in accordance with the Renzo Tonin & Associates Quality Assurance System, which is

based on Australian Standard / NZS ISO 9001.

This document is issued subject to review and authorisation by the Team Leader noted by the initials printed in the last column above. If no

initials appear, this document shall be considered as preliminary or draft only and no reliance shall be placed upon it other than for

information to be verified later.

This document is prepared for the particular requirements of our Client which are based on a specific brief with limitations as agreed to with

the Client. It is not intended for and should not be relied upon by a third party and no responsibility is undertaken to any third party without

prior consent provided by Renzo Tonin & Associates. The information herein should not be reproduced, presented or reviewed except in full.

Prior to passing on to a third party, the Client is to fully inform the third party of the specific brief and limitations associated with the

commission.

In preparing this report, we have relied upon, and presumed accurate, any information (or confirmation of the absence thereof) provided by

the Client and/or from other sources. Except as otherwise stated in the report, we have not attempted to verify the accuracy or completeness

of any such information. If the information is subsequently determined to be false, inaccurate or incomplete then it is possible that our

observations and conclusions as expressed in this report may change.

We have derived data in this report from information sourced from the Client (if any) and/or available in the public domain at the time or

times outlined in this report. The passage of time, manifestation of latent conditions or impacts of future events may require further

examination and re-evaluation of the data, findings, observations and conclusions expressed in this report.

We have prepared this report in accordance with the usual care and thoroughness of the consulting profession, for the sole purpose

described above and by reference to applicable standards, guidelines, procedures and practices at the date of issue of this report. For the

reasons outlined above, however, no other warranty or guarantee, whether expressed or implied, is made as to the data, observations and

findings expressed in this report, to the extent permitted by law.

The information contained herein is for the purpose of acoustics only. No claims are made and no liability is accepted in respect of design

and construction issues falling outside of the specialist field of acoustics engineering including and not limited to structural integrity, fire

rating, architectural buildability and fit-for-purpose, waterproofing and the like. Supplementary professional advice should be sought in

respect of these issues.





APPENDIX A Glossary of terminology

The following is a brief description of the technical terms used to describe noise to assist in

understanding the technical issues presented.

Adverse weather Weather effects that enhance noise (that is, wind and temperature inversions) that occur at a site

for a significant period of time (that is, wind occurring more than 30% of the time in any

assessment period in any season and/or temperature inversions occurring more than 30% of the

nights in winter).

Ambient noise The all-encompassing noise associated within a given environment at a given time, usually

composed of sound from all sources near and far.

Assessment period

The period in a day over which assessments are made.

Assessment point

A point at which noise measurements are taken or estimated. A point at which noise

measurements are taken or estimated.

Background noise

Background noise is the term used to describe the underlying level of noise present in the

ambient noise, measured in the absence of the noise under investigation, when extraneous noise

is removed. It is described as the average of the minimum noise levels measured on a sound

level meter and is measured statistically as the A-weighted noise level exceeded for ninety

percent of a sample period. This is represented as the L90 noise level (see below).

Decibel [dB] The units that sound is measured in. The following are examples of the decibel readings of every

day sounds:

0dB The faintest sound we can hear

30dB A quiet library or in a quiet location in the country

45dB Typical office space. Ambience in the city at night

60dB CBD mall at lunch time

70dB The sound of a car passing on the street

80dB Loud music played at home

90dB The sound of a truck passing on the street

100dB The sound of a rock band

115dB Limit of sound permitted in industry

120dB Deafening

dB(A) A-weighted decibels. The A- weighting noise filter simulates the response of the human ear at

relatively low levels, where the ear is not as effective in hearing low frequency sounds as it is in

hearing high frequency sounds. That is, low frequency sounds of the same dB level are not

heard as loud as high frequency sounds. The sound level meter replicates the human response

of the ear by using an electronic filter which is called the “A” filter. A sound level measured with

this filter switched on is denoted as dB(A). Practically all noise is measured using the A filter.

dB(C) C-weighted decibels. The C-weighting noise filter simulates the response of the human ear at

relatively high levels, where the human ear is nearly equally effective at hearing from mid-low

frequency (63Hz) to mid-high frequency (4kHz), but is less effective outside these frequencies.

Frequency Frequency is synonymous to pitch. Sounds have a pitch which is peculiar to the nature of the

sound generator. For example, the sound of a tiny bell has a high pitch and the sound of a bass

drum has a low pitch. Frequency or pitch can be measured on a scale in units of Hertz or Hz.

Impulsive noise Having a high peak of short duration or a sequence of such peaks. A sequence of impulses in

rapid succession is termed repetitive impulsive noise.

Intermittent noise The level suddenly drops to that of the background noise several times during the period of

observation. The time during which the noise remains at levels different from that of the ambient

is one second or more.

LMax The maximum sound pressure level measured over a given period.

LMin The minimum sound pressure level measured over a given period.





L1 The sound pressure level that is exceeded for 1% of the time for which the given sound is

measured.

L10 The sound pressure level that is exceeded for 10% of the time for which the given sound is

measured.

L90 The level of noise exceeded for 90% of the time. The bottom 10% of the sample is the L90 noise

level expressed in units of dB(A).

Leq The “equivalent noise level” is the summation of noise events and integrated over a selected

period of time.

Reflection Sound wave changed in direction of propagation due to a solid object obscuring its path.

SEL Sound Exposure Level (SEL) is the constant sound level which, if maintained for a period of 1

second would have the same acoustic energy as the measured noise event. SEL noise

measurements are useful as they can be converted to obtain Leq sound levels over any period of

time and can be used for predicting noise at various locations.

Sound A fluctuation of air pressure which is propagated as a wave through air.

Sound absorption The ability of a material to absorb sound energy through its conversion into thermal energy.

Sound level meter An instrument consisting of a microphone, amplifier and indicating device, having a declared

performance and designed to measure sound pressure levels.

Sound pressure level The level of noise, usually expressed in decibels, as measured by a standard sound level meter

with a microphone.

Sound power level Ten times the logarithm to the base 10 of the ratio of the sound power of the source to the

reference sound power.

Tonal noise Containing a prominent frequency and characterised by a definite pitch.

Acoustic Studio: 20191128 TSE BA 24_7 Spoil Haulage CNVIS Addendum AltAA endorsement.docx - 1 -

ENDORSEMENT CITY & SOUTHWEST ACOUSTIC ADVISOR

Review of Construction Noise and

Vibration Impact Statement Addendum: Barangaroo – Spoil Loading and Haulage

Document reference:

SYDNEY METRO CITY & SOUTHWEST-TSE WORKS Construction Noise and Vibration Impact Statement Addendum: Barangaroo Spoil Loading and Haulage TH511-02 01.06.04 F03 BN CNVIS Add3 Spoil Haulage (r4) Dated 25 November 2019

Prepared by: Larry Clark, Alternate Acoustic Advisor

Date of issue: 28 November 2019

As approved Alternate Acoustic Advisor for the Sydney Metro City & Southwest project, I have reviewed the Construction Noise and Vibration Impact Statement (CNVIS) Addendum for Barangaroo Spoil Loading and Haulage, as required under A27 (d) of the project approval conditions. The CNVIS Addendum covers the direct spoil haulage by road, 24 hr/day, 7 days/week from January to the end of March 2020. The Addendum supports the CNVIS: Barangaroo Construction site. I reviewed the Addendum; visited the site to understand the movement of heavy vehicle movements on and off the site; and clarified the night-time heavy vehicle projections for Hickson Road in relation to predicted traffic noise level changes. I am satisfied that truck movements associated with TBM retrieval would result in a negligible increase in spoil haulage traffic noise levels on Hickson Road. TSE confirmed, on 26 November 2019, that toolbox presentations and driver inductions will include the requirements of TSE’s Driver Code of Conduct. As stated in the CNVMP, TSE will:

• limit the use of engine compression brakes at night and in residential areas. • ensure vehicles are fitted with a maintained Original Equipment Manufacturer exhaust

silencer or a silencer that complies with the National Transport Commission's 'In-service test procedure' and standard.

I am satisfied that the CNVIS Addendum is technically valid and that it includes appropriate noise and vibration mitigation and management. On this basis I endorse the impact statement Addendum in relation to the documented retrieval of TBM components at the Barangaroo construction site.

Larry Clark, City & Southwest Alternate Acoustic Advisor

Sydney Metro Chatswood to Sydenham – TSE Works 01.06.04 F03... · SYDNEY METRO CHATSWOOD TO...

Documents

Transcript of Sydney Metro Chatswood to Sydenham – TSE Works 01.06.04 F03... · SYDNEY METRO CHATSWOOD TO...