N O R T H S Y D N E Y C O U N C I L R E P O R T S · Western Harbour Tunnel & Beaches Link Air...

ITEM CiS02 REPORTS 25/02/19

N O R T H S Y D N E Y C O U N C I L R E P O R T S

Report to General Manager

Attachments:

1. SLR Western Harbour Tunnel & Beaches Link

– Air Quality Monitoring Siting Assessment

SUBJECT: Proposed Western Harbour Tunnel – Air Quality Monitoring Siting Assessment

AUTHOR: Fiona Mulcahy, Team Leader Environmental Health

ENDORSED BY: Joseph Hill, Director City Strategy

EXECUTIVE SUMMARY:

At its meeting of 19 November 2018 Council resolved:

1. THAT Council undertake air quality monitoring in accordance with Option 1 outlined

within the report for a period of 12 months with funding to be provided from the

Environmental Levy/Environmental Reserve.

2. THAT the General Manager be authorised to take any necessary action to promptly

implement the air quality monitoring program.

3. THAT the air quality monitoring be undertaken in the vicinity of Anzac Park Public

School.

SLR Consulting Australia Pty Ltd (SLR) was commissioned by Council to undertake a

preliminary Siting Assessment of Anzac Park and St Leonards Park. The Siting Assessment

findings form an attachment to this report. This assessment was undertaken to determine if the

preferred location is suitable and representative of background ambient air quality in the

vicinity of the proposed tunnel ventilation stacks associated with the Western Harbour Tunnel

& Beaches Link (the Project).

SLR concluded that Anzac Park does not meet all the site measurement requirements as per the

relevant Australian/New Zealand Standard - Methods for sampling and analysis of ambient air

– Guide to siting of air monitoring equipment. This may risk leaving any monitoring results

open to challenge as to their reliability.

As the St Leonards Park site is able to meet strict compliance with the relevant Australian/New

Zealand Standard - Methods for sampling and analysis of ambient air – Guide to siting of air

monitoring equipment and represent both local and regional air quality it is recommended that

the air quality monitoring station be located in St Leonards Park.

This recommendation takes into consideration the advice that the St Leonards Park location

can be expected to be representative of the levels that would be expected at similar distances

from the motorway further to the north (i.e. at Anzac Park Public School and residential

receptors in the vicinity of the proposed WHTBL ventilation stack(s).

Report of Fiona Mulcahy, Team Leader Environmental Health

Re: Proposed Western Harbour Tunnel – Air Quality Monitoring Siting Assessment

(2)

FINANCIAL IMPLICATIONS:

The indicative cost for installing a compliant air quality monitoring station is $160,000 + GST.

It was resolved at the 19 November 2018 Council meeting for funding to be provided from the


RECOMMENDATION:

1. THAT Council undertake air quality monitoring in St Leonards Park for a period of 12

months.





(3)

LINK TO COMMUNITY STRATEGIC PLAN

The relationship with the Community Strategic Plan is as follows:

Direction: 1. Our Living Environment

Outcome: 1.1 Protected and enhanced natural environment and biodiversity

BACKGROUND

At its meeting of 19 November 2018 Council resolved as follows:

1. THAT Council undertake air quality monitoring in accordance with Option 1 outlined

within the report for a period of 12 months with funding to be provided from the




3. THAT the air quality monitoring be undertaken in the vicinity of Anzac Park Public

School.

CONSULTATION REQUIREMENTS

Community engagement is not required.

SUSTAINABILITY STATEMENT

The sustainability implications are of a minor nature and did not warrant a detailed assessment.

DETAIL

SLR was commissioned by Council to undertake a detailed Siting Assessment of Anzac Park

to determine if the preferred location is suitable and representative of background ambient air

quality in the vicinity of the proposed tunnel ventilation stacks associated with the Project.

Whilst undertaking the Siting Assessment, SLR also looked at St Leonards Park as a

comparison. The attached report sets out the siting results, including Table 1, Summary of Site

Selection Criteria – Anzac Park and St Leonards Park. The report states that St Leonards Park

is compliant with the aforementioned Australian Standard and that Anzac Park is not strictly

compliant.

The Anzac Park non-compliances relate to the distance of the nearest trees. SLR note in their

assessment that 100% compliance with siting requirements is usually difficult to achieve in city

environments. Further, SLR state that they consider the non-compliance at the Anzac Park

location to be negligible on the basis that a 12-month monitoring program is being proposed

and that any validation studies after construction of the tunnel ventilation stacks are conducted

from the same location.



(4)

The Anzac Park location is representative of more localised air quality. This is due to the

monitoring equipment being located in a gully type environment with surrounding vegetation,

vegetation that renders the site unable to meet the Australian /New Zealand Standards. In

comparison, the St Leonards Park location is considered representative of both regional and

localised air quality due to the elevation of the monitoring equipment.

As the St Leonards Park site is able to meet strict compliance with the relevant Australian /New

Zealand Standard - Methods for sampling and analysis of ambient air – Guide to siting of air

monitoring equipment and represent both local and regional air quality it is recommended that

the air quality monitoring station be located in St Leonards Park.

This recommendation takes into consideration the advice that the St Leonards Park location

can be expected to be representative of the levels that would be expected at similar distances

from the motorway further to the north (i.e. at Anzac Park Public School and residential

receptors in the vicinity of the proposed WHTBL ventilation stack(s).

SLR Consulting Australia Pty Ltd 2 Lincoln Street Lane Cove NSW 2066 Australia (PO Box 176 Lane Cove NSW 1595 Australia)

T: +61 2 9427 8100 E: [email protected]

www.slrconsulting.com ABN 29 001 584 612

18 January 2019

610.18164-L02-v1.0.docx

North Sydney Council 200 Miller Street North Sydney NSW 2060

Attention: Fiona Mulcahy

Dear Fiona

Western Harbour Tunnel & Beaches Link Air Quality Monitoring Siting Assessment

SLR Consulting Australia Pty Ltd (SLR) conducted a preliminary Siting Assessment at two proposed monitoring locations to determine which location would best represent background ambient air emissions in the area of the proposed tunnel ventilation stacks associated with the Western Harbour Tunnel and Warringah Freeway Upgrade (the Project).

The two locations assessed within the North Sydney precinct were;

Anzac Park located on Anzac Parade and Ernest Street, Cammeray New South Wales 2062, and

St Leonards Park located on Miller Street, North Sydney New South Wales 2060.

It is understood that Anzac Park is the preferred locality to conduct the baseline air monitoring program.

SLR met with North Sydney Council representative Fiona Mulcahy on Monday 17 December 2018 to review the suitability of Anzac Park for siting an ambient Air Quality Monitoring Station (AQMS).

SLR has adopted the site selection criteria for particulates less than 2.5 microns (PM2.5) as a guideline to demonstrate the suitability of the proposed monitoring location. There are different guidelines based on the parameters to be measured however PM2.5 is considered to be the most stringent and therefore compliance with these criteria will typically result in compliance against other pollutants to be measured.

Table 1 summarises the siting results with respect to siting the ambient AQMS in accordance with Australian Standards / New Zealand Standards (AS/NZS) 3580.1.1: 2016 Methods for sampling and analysis of ambient air Guide to siting air monitoring equipment at both Anzac Park and St Leonards Park.

In summary, St Leonards Park is compliant with AS/NZS 3580.1.1 and Anzac Park is non-compliant with AS/NZS 3580.1.1.

ATTACHMENT TO CiS02 - 25/02/19

https://www.bing.com/local?lid=YN3450x300933372&id=YN3450x300933372&q=Anzac+Park&name=Anzac+Park&cp=-33.8267517089844%7e151.211853027344&ppois=-33.8267517089844_151.211853027344_Anzac+Park&FORM=SNAPST

https://www.bing.com/local?lid=YN3724x15286342346442521187&id=YN3724x15286342346442521187&q=St.+Leonards+Park&name=St.+Leonards+Park&cp=-33.8301467895508%7e151.210998535156&ppois=-33.8301467895508_151.210998535156_St.+Leonards+Park&FORM=SNAPST

North Sydney Council Western Harbour Tunnel & Beaches Link Air Quality Monitoring Siting Assessment

SLR Ref: 610.18164-L02-v1.0.docx Date: 18 January 2019

Page 2

Anzac Park Site Selection Result

In summary, Anzac Park site selection does not meet all the site measurement requirements as per AS/NZS 3580.1.1. Typically the site selection criteria will not be compliant due to the distance to the nearest obstacles/trees criterion. This is usually difficult to achieve in city and suburban environments while keeping the AQMS secure from third party interferences yet still having availability of mains power at the site.

Important; Non-compliance with these criteria does not invalidate the results, but may impose certain considerations when deriving conclusions from those results. SLR considers the non-compliance to be negligible on the basis that a 12 month monitoring program for baseline air quality emissions is being proposed and that any validation studies after construction are conducted from the same location.

Table 1 summarises the siting results with respect to siting the ambient AQMS in accordance with Australian Standards / New Zealand Standards (AS/NZS) 3580.1.1: 2016 Methods for sampling and analysis of ambient air Guide to siting air monitoring equipment at both Anzac Park and St Leonards Park. Table 1 also provides further details on accessibility, security and mains power availability.

Figure 1 illustrates an overview of the monitoring site and the proposed ambient AQMS siting location for Anzac Park and Figure 2 presents photographs of the monitoring site.

SLR considers this location will represent more localised air quality due to the positioning of the monitoring location in a gully type of environment and surrounding vegetation.




Page 3

Figure 1 Overview of Anzac Park Site Locality and Proposed Monitoring Location

Proposed AQMS




Page 4

Table 1 Summary of Site Selection Criteria – Anzac Park and St Leonards Park

Measurement for PM2.5

Peak Criteria for PM2.5

Neighbourhood / Background Criteria for PM2.5

Anzac Park Results St Leonards Park Results

Height of sample inlet above ground

1.5 to 15m 1.5 to 15m To be assessed after installation of AQMS

To be assessed after installation of AQMS

Height of nearby obstacle above Hg

2 Ho ≤ DW 2 Ho ≤ DW Non-Compliant

5 to 10m (trees)

SLR cannot identify a suitable location within the park that will meet this criterion

Compliant

5m (Bowls Club)

Up to 10m (trees)

Distance to nearby obstacle / structure

10m from any object with height exceeding 2m below height of Inlet

10m from any object with height exceeding 2m below height of Inlet

Non-compliant

Between 8 to 10m based on final positioning of AQMS

Compliant

Approximately 40m (both bowls club and trees)

Distance to source

No extraneous sources nearby

No extraneous sources nearby

Compliant

Baseline Monitoring therefore no target sources identified. Refer to roadside distance below.

Compliant

Baseline Monitoring therefore no target sources identified. Lawn Bowls green adjacent to AQMS. Cricket fields approximately 100m from AQMS. Refer to roadside distance below.

Distance to nearby trees

No trees between Inlet & Source

≥ 10 m Non-compliant No target sources because program is baseline monitoring therefore conditions relating to trees between inlet and source not relevant.

Approximately 8 to 10m based on final positioning of AQMS.

Compliant

Approximately 30m based on final positioning of AQMS

Distance to roadside

(extrapolated ≤10,000

vehicles per day)

2 m > 50 m Compliant

Freeway road traffic approximately 75m from AQMS site,

Suburban road traffic approximately 35m from AQMS site

Compliant

Approximately 70m based on final positioning of AQMS to either Freeway or Ridge Street.

Clear sky angle (vertical)

120º 120º Non-compliant.

<120o

Generally assessed line of sight to source.

East to West compliant with 120o,

North to South non-compliant with 120

o. SLR cannot identify a suitable

location within the park that will meet this criterion

Compliant

120o

Air flow angle (horizontal) unrestricted

180º no obstruction between major source and Inlet

270º around sample Inlet

Compliant

> 270o

Compliant

> 270o




Page 5

Measurement for PM2.5

Peak Criteria for PM2.5

Neighbourhood / Background Criteria for PM2.5

Anzac Park Results St Leonards Park Results

Power Availability

-- -- No suitably ready mains power source available.

240V mains power will need to be made available. It is understood that mains power can be routed from the corner of Cammeray Ave and Ernest Street. Power will need to be suspended as trenching is not the preferred option. This will require a wire run of approximately 40m to the AQMS site.

No suitably ready mains power source available however a power source may have been identified in nearby tent setting between bowls lawns.

240V mains power will need to be made available. It is understood that power can be arranged with North Sydney Bowling Club assuming the AQMS is positioned on the eastern fence line of Bowls Lawn No.2.

Concrete Base or Equivalent

-- -- The proposed location will need a concrete platform or equivalent to house the AQMS. Note some AQMS can be constructed with a suitable platform already attached to the AQMS.

The proposed location will need a concrete platform or equivalent to house the AQMS. Note some AQMS can be constructed with a suitable platform already attached to the AQMS.

Security -- -- Will need to install temporary fencing as a minimum around AQMS

Will need to install temporary fencing as a minimum around AQMS

Accessibility -- -- Consideration will be needed should a crane truck be required for installation of AQMS. There are some possible openings between trees along Ernest Street for vehicle access to AQMS monitoring location however discussions will need to be undertaken with freight companies prior to vehicles accessing the park.

Consideration will be needed should a crane truck be required for installation of AQMS. Access appears suitable along Ridge Street to potential AQMS monitoring site. However discussions will need to be undertaken with freight companies prior to vehicles accessing the park.

Other Comments

-- -- Moving the AQMS to the western side of the park is not recommended on the basis that this side of the park appears to be used more for recreation by locals. There is also a dense tree lining on the Western perimeter that may influence localised air emissions and compliance against AS/NZS 3580.1.1 is still not achieved.

Moving the AQMS to other areas around the park will pose similar limitations as those identified for Anzac Park. There are a number of compliant areas along the back of the bowling club and the final position will be based on where mains power can be drawn from to keep costs to a minimum.




Page 6

Figure 2 Photographs of Proposed Monitoring Site – Anzac Park

View looking West towards Anzac Park Public School (AQMS proposed along 3rd

& 4th

Garden Fence Panel)

View looking Southwest towards Anzac Park Public School

View looking Northwest towards Anzac Park Public School




Page 7

St Leonards Park Site Selection Result

In summary, St Leonards Park site selection is in compliance with all the site measurement requirements as per AS/NZS 3580.1.1. Table 1 summarises the siting results with respect to siting the ambient AQMS in accordance with AS/NZS 3580.1.1 for both St Leonards Park and Anzac Park.

Refer to Figure 3 for an overview of the monitoring location and the proposed monitoring site. Refer to Figure 4 for photograph of the proposed monitoring location.

SLR considers this location will represent both regional and localised air quality due to the elevation of the monitoring location.

Figure 3 Overview of St Leonards Park and Proposed Monitoring Location

Proposed AQMS




Page 8

Figure 4 Photographs of Proposed Monitoring Site – St Leonards Park

View looking North towards Anzac Park (AQMS proposed along boundary fence of Bowling Club – Lawn No.2)

We trust this information meets your requirements however should you require anything further please do not hesitate to contact us.

Yours sincerely

M.BRECKO Senior Air Quality Consultant

Checked/ Authorised by: GS


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