Environmental Noise Assessment sonus · to the noise from rail, road, mixed use, and industrial activity and to also be designed so as not to constrain the approved operation of existing

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Rezoning Investigations Cowan Street, Angle Park

Environmental Noise Assessment

August 2019

sonus.

Jason Turner Associate Phone: +61 (0) 410 920 122 Email: [email protected] Sonus Pty Ltd 17 Ruthven Avenue Adelaide 5000 SA www.sonus.com.au

Rezoning Investigations – Cowan Street, Angle Park Environmental Noise Assessment S5995C4 August 2019

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sonus.

Document Title : Rezoning Investigations – Cowan Street, Angle Park

Environmental Noise Assessment

Document Reference : S5995C4

Date : August 2019

Author : Byron Holmes, MAAS Reviewer : Jason Turner, MAAS

TABLE OF CONTENTS

1 INTRODUCTION ................................................................................................................................. 3

2 CRITERIA ........................................................................................................................................... 5

2.1 Development Plan ............................................................................................................................... 5

2.2 Environment Protection (Noise) Policy 2007 ...................................................................................... 8

2.3 Minister’s Specification SA 78B ......................................................................................................... 10

3 ASSESSMENT .................................................................................................................................. 12

3.1 Road Traffic Noise ............................................................................................................................. 12

3.2 Greyhound Racing ............................................................................................................................. 13

3.3 Sporting Facilities .............................................................................................................................. 16

3.4 Industrial Activity .............................................................................................................................. 20

4 RECOMMENDED DPA PROVISIONS .................................................................................................. 23

APPENDIX A: DPA Site and nearby noise sources. .................................................................................... 25

APPENDIX B: Example SA78B Treatments based on Sound Exposure Category. ......................................... 26


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sonus. 1 INTRODUCTION

A Development Plan Amendment (DPA) is being considered for land adjacent to Cowan Street, Angle Park,

for the extent depicted in Figure 1 below. The proposed amendment will facilitate the rezoning of an area of

land to provide for future residential land uses, including medium density housing.

Figure 1: Subject land and surrounding locality

The subject land is currently located partially within a Recreation zone (portion of allotment 115) and

partially within a Light Industry zone (Allotment 113) in accordance with the City of Port Adelaide Enfield

Development Plan (consolidated 6 February 2018).

The subject land shares interfaces with the following existing land uses:

Playing fields (Football Federation SA’s (FFSA’s) VALO Football Centre and Harold Tyler Reserve)

within the Neighbourhood Centre and Recreation zone immediately to the north-west;

Greyhound Racing SA’s Angle Park Greyhound Track within the Recreation zone immediately to the

north;

Light industrial land uses within the Light Industry zone immediately to the north-east between the

subject site and South Road;

Investigation Area


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sonus. The South Road corridor (comprising the North South Motorway elevated roadway and South Road

surface road) immediately to the east, and;

Residential land uses within the Residential zone to the south of Cowan Street.

This assessment considers the two key potential noise impacts associated with future dwellings in the DPA

subject land:

1. the amenity of the future dwellings when exposed to the existing and envisaged interface activities,

and;

2. whether the future dwellings will unreasonably constrain both the existing and envisaged industrial

activities.

Specifically, this assessment considers the following noise sources:

1. traffic noise from the North South Motorway (elevated roadway) and South Road (surface roadway)

to the east of the subject site;

2. the Greyhound Racing SA facility directly adjoining the subject site to the north;

3. the Football Federation SA (FFSA) VALO Football Centre and Harold Tyler Reserve playing fields

directly adjoining the subject site to the north and north-west, and;

4. noise from existing and potential future light industrial land uses adjoining the subject site to the

north-east.

An overview of the site identifying the location of all relevant nearby noise sources is provided in Appendix A.

The assessment has been based on:

Statement of Intent – “Rezoning of allotment 113 and portion of allotment 115, Cowan Street, Angle

Park for residential development” prepared by City of Port Adelaide Enfield, dated 22 January 2019;

City of Port Adelaide Enfield Development Plan (consolidated 6 February 2018);

Minister’s Specification SA 78B “Construction requirements for the control of external sound”;

Site visit conducted on 5th June 2019;

Site visit and noise measurements conducted on 6th June 2019 during a race meeting and soccer

training;


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sonus. This report summarises the assessment and outlines provisions for inclusion in the DPA to ensure

appropriate residential amenity within the subject land, and to minimise unreasonable constraints on

existing and potential future land uses desired in the locality.

2 CRITERIA

2.1 Development Plan The City of Port Adelaide Enfield Development Pan has been reviewed, and the following provisions have

been considered relevant to the assessment:

GENERAL SECTION

Interface between Land Uses

OBJECTIVES

1. Development located and designed to minimise adverse impact and conflict between land

uses.

2. Protect community health and amenity from adverse impacts of development.

3. Protect desired land uses from the encroachment of incompatible development.

PRINCIPLES OF DEVELOPMENT CONTROL

1. Development should not detrimentally affect the amenity of the locality or cause

unreasonable interference through any of the following:

(b) Noise

2. Development should be sited and designed to minimise negative impacts on existing and

potential future land uses desired in the locality.

4. Residential development adjacent to non-residential zones and land uses should be located,

designed and/or sited to protect residents from potential adverse impacts from non-

residential activities.

5. Sensitive uses likely to conflict with the continuation of lawfully existing developments and

land uses desired for the zone should be designed to minimise negative impacts.


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sonus. Residential Development


Noise

43. Residential development close to high noise sources (e.g. major roads, railway lines, tram

lines, industry, and airports) should be designed to locate bedrooms, living rooms, lounge

rooms, dining rooms and private open spaces away from those nose sources, or protect these

areas with appropriate noise attenuation measures.

44. Residential development on land located within 100 metres of an industry zone that is likely to

be affected by industrial noise should be designed to minimise the effects of noise by:

(a) orientating rooms so that sensitive areas such as bedrooms, studies and relaxation

rooms face away from the industrial noise source or other noise source

(b) shielding windows and doors with external blinds or verandas.

45. Residential development on sites abutting established collector or higher order roads should

include front fences and walls that will supplement the noise control provided by the building

facade.

48. Development should be designed and sited to meet ambient and internal noise levels required

by the current Environment Protection (Noise) Policy.

Car Parking and Access

58. Residential development on land abutting an arterial road should be constructed in

accordance with:

(a) Australian Standard AS 3671 Acoustics – Road Traffic noise intrusion, building siting

and construction

(b) Australian Standard AS 2107 Acoustics – Recommended Design sound levels and

reverberation times for building interiors.

The Development Plan seeks residential development to provide suitable amenity for occupants with respect

to the noise from rail, road, mixed use, and industrial activity and to also be designed so as not to constrain

the approved operation of existing or future desired land uses. A number of provisions relate to these broad

objectives including orientation and/or treatment of buildings to face away from significant noise sources.


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sonus. Provisions which address noise intrusion from road, rail, and mixed use activity already exist within the

Development Plan through the Noise and Air Emissions Overlay. The subject site and nearby road corridor is

not currently designated; however, the following existing provisions within the Development Plan can be

adopted in the DPA through designation:

OVERLAY SECTION

Noise and Air Emissions Overlay

OBJECTIVES

1. Protect community health and amenity from adverse impacts of noise and air emissions


1. Noise and air quality sensitive development located adjacent to high noise and/or air

pollution sources should:

(a) shield sensitive uses and areas through one or more of the following measures:

(i) placing buildings containing less sensitive uses between the emission source and

sensitive land uses and areas

(ii) within individual buildings, place rooms more sensitive to air quality and noise

impacts (e.g. bedrooms) further away from the emission source

(iii) erecting noise attenuation barriers provided the requirements for safety, urban

design and access can be met

(b) use building design elements such as varying building heights, widths, articulation,

setbacks and shapes to increase wind turbulence and the dispersion of air pollutants

provided wind impacts on pedestrian amenity are acceptable

(c) locate ground level private open space, communal open space and outdoor play areas

within educational establishments (including childcare centres) away from the emission

source.

In addition to the current provisions, this assessment establishes objective criteria to assist in satisfying the

Development Plan.

The relevant noise criteria to address the Development Plan requirements vary according to the noise source

under consideration. Based on the Development Plan provisions, the following noise policies and standards

have been considered;


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sonus. Environment Protection (Noise) Policy 2007 (and by extension, the Australian/New Zealand Standard

AS/NZS 2107) to provide suitable internal noise criteria to achieve appropriate residential amenity;

and;

Minister’s Specification “SA 78B – Construction requirements for the control of external sound”

(SA78B), to provide suitable (indicative) building constructions to address external noise intrusion

from road, rail and mixed use activity (noting that SA78B becomes mandatory when designated for

an area in the Development Plan).

2.2 Environment Protection (Noise) Policy 2007 The Environment Protection (Noise) Policy 2007 (the Policy) provides the most relevant noise criteria to

ensure appropriate residential amenity when exposed to industrial noise sources, and is already referenced

within the Development Plan.

The Policy is underpinned by the World Health Organisation Guidelines for Community Noise (1999)1 and is

directly linked to Australian/New Zealand Standard AS/NZS 21072 (the AS/NZS 2107 Standard). The Policy

provides both an objective measure of acceptable noise levels for residential amenity and also for the

protection of the ongoing operation of existing industrial land uses. That is, achieving the relevant

requirements of the Policy at future dwellings on the subject site would provide suitable residential amenity

and would protect existing activities from any action under the Environment Protection Act 1993.

Specifically, the Policy provides noise criteria:

outside of a residence, such as in a backyard or other private open space; or

inside habitable rooms of a residence, such as bedrooms and living areas, in situations where

acoustic treatment is applied to a facade.

The Policy provides goal noise levels based on the Development Plan zones of the area. For the combination

of the proposed DPA zoning of the investigation area to a Residential zone, and existing zoning of adjacent

land (Neighbourhood Centre, Recreation zone and Light Industry zone), the Policy provides the following goal

noise levels to be achieved outdoors at future residences to be constructed within the investigation area due

to activity at the surrounding land uses:

1 Berglund, Lindvall and Schwela, 1999, “Guidelines for Community Noise”

2 Australian/New Zealand Standard AS/NZS2107 “Acoustics – Recommended design sound levels and reverberation times for building

interiors”


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sonus. Table 1: Goal Noise Levels (Indicative noise levels)

Source Zone: Goal Noise Levels (dB(A), Leq, 15 min outside of future dwellings

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

Neighbourhood Centre zone 57 50

Recreation zone 55 48

Light Industry zone 55 48

In situations where an appropriate outdoor measurement location cannot be found (such as multi-storey

apartment buildings, for example), or where acoustic treatments have been applied to a building to protect it

from external noise and to provide internal noise amenity, the Policy provides criteria based on the higher of

the following:

The Goal Noise Level listed above minus 20 dB(A), or;

The “Satisfactory” noise level recommended by AS/NZS 2107:2000.

Accordingly, the following internal criteria apply inside the future residences from activity at the surrounding

land uses:

Daytime (7am to 10pm) noise level of 35 dB(A); and,

Night time (10pm to 7am) noise level of 30 dB(A).

The above internal noise levels are suitable for assessment of noise sources located in any of the zones

described above.

Under the Policy, penalties are applied to the measured or predicted noise levels for each characteristic of

tone, impulse, low frequency and modulation that the noise source exhibits. Based on the observations and

noise measurements conducted at the subject site, a penalty would not be warranted due to the combined

influence of steady industrial noise and existing intermittent road traffic in the existing acoustic environment,

however; for a DPA, a conservative approach is adopted (given the future activities are not known) and as

such, a 5 dB(A) penalty is applied to this assessment. This penalty may be applied either by adding 5 dB(A) to

the measured or predicted noise level, or subtracting 5 dB(A) from the goal noise levels.


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sonus. 2.3 Minister’s Specification SA 78B

The Minister’s Specification “SA 78B – Construction requirements for the control of external sound” (SA78B)

provides the most relevant noise criteria to ensure appropriate residential amenity when exposed to road,

rail and mixed use activity, and its mandatory application as part of Building Rules Consent is triggered by

designation within the Noise and Air Emissions Overlay of the Development Plan.

SA78B is the contemporary State Government approach relating to development in the vicinity of transport

corridors and mixed use activity as part of the Building Rules Consent process.

The requirements of SA 78B can be met through either a “verification” or a “deemed to satisfy” method.

Given that the actual dwelling designs on each proposed allotment are not known at this stage, the “deemed

to satisfy” method is used to provide an indicative assessment of the practicality of addressing noise impacts

from road traffic on the South Road corridor.

The “deemed to satisfy” method of SA78B requires acoustic treatment to be incorporated to dwellings based

on the sound exposure category that the various facades of the dwelling fall under. The categories range

from 1 to 5, with Category 1 requiring limited acoustic treatment and Category 5 requiring extensive

treatment. The category is assigned depending on the distance from the road or rail corridor, and the

orientation of the facade relative to that road or rail corridor.

The different exposure categories are based on a standard dwelling construction achieving a 20 dB(A) noise

reduction across its facade (this noise reduction is commonly accepted to be the minimum reduction a

standard habitable dwelling will provide and has been tested on numerous occasions to be a satisfactory

estimate). Each exposure category effectively represents a 4 dB(A) improvement in noise reduction on the

previous, meaning that the extent of acoustic treatment increases accordingly. The categories and

corresponding facade noise reduction are as follows:


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sonus. Table 2: SA78B facade noise reduction for each sound exposure category

Sound Exposure Category Facade Noise Reduction

None (typical façade) 20 dB(A)

1 24 dB(A)

2 28 dB(A)

3 32 dB(A)

4 36 dB(A)

5 40 dB(A)

It is readily accepted that category 3 can be achieved using extensive but reasonable and practicable

measures, whereas the higher categories (4 and 5) introduce esoteric treatments well beyond normal

construction methods.

The Sound Exposure Categories (SECs) and associated acoustic treatments outlined in SA78B can also be

adapted to consider noise impacts from industrial activity. This adaptation has been made in this

assessment to assist in understanding the treatments which might be required for dwellings when located at

any interface.

The adaptation considers the external noise levels due to existing and future industrial activity and

determines the facade noise reduction which would be required to achieve the internal noise levels provided

by the Policy (being a day time noise level of 35 dB(A) and night time noise level of 30 dB(A)). For example, if

it is predicted that a future multi-storey apartment will be exposed to an external noise level of 58 dB(A)

during the night (with a 5 dB(A) penalty included), then the facade should be designed to achieve a noise

reduction of 58 – 30 = 28 dB(A). A noise reduction of 28 dB(A) is provided by a SEC 2 façade construction

(referring to Table 2 above).


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sonus. 3 ASSESSMENT

3.1 Road Traffic Noise The “deemed to satisfy” requirements of SA78B have been reproduced in Table 3 below, based on the

separation distance between the facade of a future dwelling and road corridor (in this case a Type A road).

The resulting categories for the subject site are provided below in Figure 2 below for road traffic noise.

Table 3: SA78 rail and road sound exposure categories.

Sound exposure category Separation from Type A Road

(Speed limit 90km/h)

1 95 < 150m

2 45 < 95m

3 25 < 45m

4 10 < 25m

5 Less than 10m

Figure 2: Sound exposure category (SEC) for road noise

Based on the assessment, future residences within the areas shown as yellow (SEC 2) or green (SEC 1) would

require specific treatments to adequately address road traffic noise impacts depending on the proximity to

Legend No SEC SEC 1

SEC 2 SEC 3 SEC 4


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sonus. the North South Motorway elevated roadway. A sound exposure category of 2 can be achieved with

reasonable and practicable levels of acoustic treatments as summarised in Appendix B.

To ensure that future residences are designed to adequately address noise impacts from the road, regardless

of their location within the subject site, it is recommended that the subject site and the North South

Motorway elevated roadway (for the portion immediately adjacent to the site) be designated within the

Noise and Air Emissions Overlay of the Development Plan. This will introduce mandatory construction

requirements for future dwellings within the subject site. Indicative treatments are provided in Appendix B

for the relevant SEC.

It is noted that Figure 2 above does not account for the effects of shielding from adjacent structures as the

site is developed over time. The shielding effect could allow the category to be reduced in accordance with

SA78B. That is, the above figure provides for a worst case scenario in terms of the need for acoustic

treatment with respect to road traffic noise. Additional requirements may also apply to address noise from

other noise sources (such as light industry, for example); these are discussed in the relevant section.

3.2 Greyhound Racing Greyhound Racing SA’s greyhound track directly adjoins the subject land to the north. Race meetings are

currently held at the track on one day per fortnight (alternate Wednesdays) and two nights per week

(Mondays and Thursdays).

A visit to the site was conducted while a race meeting was in progress on Thursday, 6th June 2019. This

meeting was scheduled to commence around 6:20pm (first race) and conclude around 10:30pm (last race

10:17pm). During this visit, noise from the race meeting was measured at the site boundary separating the

subject site from the greyhound track. Races were observed to commence every 20 minutes, with

loudspeaker operation for two minutes on both sides of each race. Race durations were on the order of 1-

minute.

A summary of the noise sources observed on-site is presented below:


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sonus.

Table 4: Greyhound Racing Noise Sources

Noise Source Noise Level Duration (approx.) Comments

Greyhound racing 58dB(A) 1 minute Dominated by noise from the lure. Races

commence every 20 minutes.

Quad bike 56dB(A) 10-30 seconds

Loudspeaker 53dB(A) 4 minutes 4 minutes per race

To predict noise levels at all locations within the subject site, a 3 dimensional noise model has been

developed taking into account each of the above noise sources associated with greyhound racing at the

adjacent track. The noise model was validated against the measurements conducted on-site on the 6th June

2019.

On the basis of the above noise sources and a single race per 15-minute period, a 15-minute equivalent noise

level of 48 dB(A) was predicted by the model at the northern boundary of the investigation area. Note that

ambient noise levels due to the North South Motorway were observed to be on the order of 51 dB(A) while

the race meeting was in progress.

Considering a 5 dB(A) penalty for modulating character, this resulted in a noise level of 53 dB(A) at the site

boundary due to greyhound racing activity. This complies with the day-time goal noise level applicable under

the Policy but exceeds the night-time goal noise level by 5 dB(A). Residents further from the greyhound track

site boundary are expected to be exposed to corresponding lower levels of noise, particularly those which

benefit from acoustic shielding by residences closer to the greyhound track.

As one of the most prominent noise sources related to the greyhound track comprises the Public Address

(PA) system loudspeakers, due to their height above ground level providing acoustic barriers or mounding to

reduce the influence of this source is unlikely to be effective or practicable. Furthermore, such barriers would

not assist in mitigating noise impacts to upper levels of multi-storey dwellings or high-density development.

Compliance with the internal noise criterion applicable under the Policy at night may be achieved by a

modest reduction in sound pressure levels of 23 dB(A) across the building façade. This corresponds to the

level of attenuation provided by Sound Exposure Category 1 (SEC 1) acoustic treatments as specified by

Minister’s Specification SA 78B, and is therefore likely to require only modest upgrades beyond standard


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sonus. building practice. Note that it is expected that operation of the PA system would cease shortly after

conclusion of race activities, which on the evening of the site visit occurred around 10:30pm.

In the circumstance where the future residences at the subject site are designed to achieve the internal noise

level criteria of the Policy when exposed to the predicted external noise level, the greyhound racing activities

will not be constrained and a reasonable level of amenity will be provided inside the residences.

The level of noise attenuation across the building facade which is required to achieve the internal noise levels

of the Policy when exposed to the predicted external noise levels is provided in Figure 3 below. The

indicative treatments required to achieve this level of noise attenuation (equivalent to those required by the

corresponding SEC) can be derived from Appendix B. Where the façade is not directly exposed to the noise

source (i.e. facing away from the noise source or shielded by buildings or other solid structures) the level of

noise attenuation required is likely to be reduced.

Figure 3: Minimum required noise reduction from greyhound racing activities

Legend <20 dB(A) (no SEC) 20 to 24 dB(A) (SEC 1)

24 to 28 dB(A) (SEC 2) 28 to 32 dB(A) (SEC 3) 32 to 36 dB(A) (SEC 4)


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sonus. 3.3 Sporting Facilities

Harold Tyler Reserve directly adjoins the western part of the site to the north, and contains two full-size

natural turf football (soccer) pitches. Immediately to the west of Harold Tyler Reserve lies Football

Federation SA’s VALO Football Centre, comprising two full-sized synthetic football (soccer) pitches in addition

to clubrooms and spectator facilities (including grandstands for 200 spectators and a carpark of

approximately 300 spaces). The two venues appear to operate as an integrated facility to some extent.

VALO Football Centre is managed by Football Federation SA (FFSA), and currently hosts home games for

Adelaide Olympic Soccer Club, in addition to a selection of other Men’s and Women’s National Premier

League (NPL) NPL fixtures. With reference to the 2019 fixture list for the centre, during the soccer season

(March to September), matches are held at the centre most Friday nights and Saturdays during the day, with

up to 2 matches occurring on a Friday night and 3 matches occurring on a Saturday. Matches are also held on

a selection of Thursday Nights, Saturday nights and Sundays. In general, matches do not kick-off later than

8:15pm, resulting in the overwhelming majority of activity occurring in during the Policy’s day-time period. A

carpark of around 300 spaces associated with the centre is located immediately to the west of the subject

site, accessed via Cowan Street.

Harold Tyler Reserve is managed by the City of Port Adelaide Enfield, and appears to currently be used by

Adelaide Croatia Soccer Club for training. The parking area associated with this space is located to adjacent

to Cardigan Street to the north, however; users of the southern pitch (closest to the subject site) are likely to

also make use of the carpark accessed via Cowan Street.

The most significant interface on the subject site is likely to arise when training is being conducted on the

nearest pitch to the investigation area (noting that this pitch directly adjoins the site boundary). Higher noise

levels are also likely to arise during matches at the VALO Football Centre which attract a large crowd and

associated activity in the carpark albeit over a short period.

Soccer training on the pitch nearest the subject site was in progress during the site visit conducted on

Thursday, 6th June 2019. A practice match was in progress during the site visit, and noise from the match

was measured while activity was occurring in the half of the pitch nearest the investigation site. A noise level

of 56 dB(A) was measured, dominated by voices.


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sonus. The noise level due to significant carpark activity (i.e. following conclusion of a match at the VALO Football

Centre) was also predicted, based on previous measurements of carpark activity, with approximately 200

spaces being occupied in the adjacent carpark, and 50 vehicle movements through the carpark. This level of

activity was predicted to result in a noise level of approximately 53 dB(A) at the nearest point within the

subject site.

Considering a 5 dB(A) penalty for character to be applicable to each of the above scenarios, this results in

noise levels of 61 dB(A) at the northern boundary of the investigation area during soccer training, and

58 dB(A) at the western boundary during times of high levels of carpark activity (such as immediately

following a match). These levels exceed both the day-time and night-time outdoor noise criteria under the

Policy.

Notwithstanding; each of the above scenarios are expected to occur relatively infrequently. Soccer training is

only anticipated to occur on a limited number of nights per week and then for hours at a time and would

generally conclude prior to 10:00pm. Significant carpark activity of the scale assumed in the predicted noise

levels discussed above is only expected immediately prior to or following matches attracting a large crowd.

As matches are regularly scheduled to kick off at 8:15pm (usually on Friday nights), significant carpark activity

for a short period after 10:00pm is anticipated.

On the basis of the above, it is considered that the maximum noise impact predicted to occur due to sports-

related activity is 61 dB(A) during the day-time period at the northern boundary (due to soccer training), and

58 dB(A) during the night-time period at the western boundary of the investigation area.

Construction of barriers or acoustic mounding along the boundary of the site to mitigate these noise sources

is unlikely to be effective at reducing noise levels, as activity-based noise from each of the sources associated

with sports related activity (matches, training and car parking) occur over a large area and in some cases at a

relatively large distance from the site boundary, reducing the effectiveness of any potential barrier.

As such, providing acoustic treatments to the building façade in combination with employing design

methodologies which provide public open space in strategic locations to increase separation distance and

locates balconies and private open space to minimise noise impacts is recommended.


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sonus. In order to achieve the day-time noise goal of 35 dB(A) indoors, a modest reduction in noise levels across the

façade of future buildings of 26 dB(A) is required. Similarly, based on the maximum noise impact predicted

during the night-time period of 58 dB(A), a reduction of 28 dB(A) across the façade is required to achieve

compliance with the 30 dB(A) night-time indoor noise goal.

This above corresponds to the level of attenuation provided by Sound Exposure Category 2 (SEC 2) acoustic

treatments as specified by Minister’s Specification SA 78B, and is therefore likely to require only modest

upgrades beyond standard building practice. Note that the predicted noise levels do not take into account

shielding of residences beyond the first row of buildings, which will serve to reduce noise levels further.

In the circumstance where the future residences at the subject site are designed to achieve the internal noise

level criteria of the Policy when exposed to the predicted external noise level, ongoing sporting activities in

the vicinity of the investigation area will not be constrained and a reasonable level of amenity will be

provided inside the residences.

The level of noise attenuation across the building façade required to achieve the internal noise levels of the

Policy when exposed to the predicted external noise levels are provided in Figure 4. The indicative

treatments required to achieve this level of noise attenuation (equivalent to those required by the

corresponding SEC) can be derived from Appendix B. Where the façade is not directly exposed to the noise

source (i.e. facing away from the noise source or shielded by buildings or other solid structures) the level of

noise attenuation required is likely to be reduced.


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sonus.

Figure 4: Minimum noise reduction required from sports related noise sources

`




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sonus. 3.4 Industrial Activity

A site visit was conducted on Wednesday, 5th June 2019. Based on observations of the activity on each

industrial site in the vicinity of the investigation area, a simple noise model was developed to predict the

impact of existing (and potential future) industrial activities on future residential premises to be constructed

within the subject site.

Predicted noise levels were based on a single large truck movement to each of the three nearest existing

industrial premises, a truck idling on-site for 1-minute, and a single forklift operating outside on each site for

half of the 15-minute assessment period.

On the basis of the above, the maximum predicted noise level from industrial activity within the investigation

area was 49 dB(A) (including application of a conservative 5dB(A) penalty), comfortably in compliance with

the 55 dB(A) day-time goal noise level and marginally in exceedance of the 48 dB(A) night-time goal noise

level. Note that, based on on-site observations, it is not anticipated that the current businesses would

operate during the night-time period.

Consideration was also given to the impact of the currently vacant allotment to the south being developed

for a light industrial use. The assumed site configuration for the currently vacant site was based on Concept

Plan PAdE/8, and the assumption that future premises would address potential interface issues in

accordance with the requirements of the Development Plan (including PDC 14 of the Light Industry zone

Section). Predicted noise levels were based on the same level of activity as for existing operations (i.e. a

single heavy vehicle movement, and continuous operation of a forklift in an outdoor loading area throughout

half the 15-minute assessment period).

On the basis of the above, and the assumption that 2.4-metre high fencing would be constructed on the site

boundary of the currently vacant industrial-zoned land adjoining the investigation area, noise emissions from

the industry zone less than 57 dB(A) are predicted within the investigation area (including application of a

conservative 5 dB(A) penalty) – slightly in excess of the day-time outdoor goal noise level of 55dB(A)

indicating that through careful design a future light industrial land use could readily be designed to address

any potential interface issues with residential development within the investigation area.


Page 21

sonus. Note that the predicted noise levels discussed above are only anticipated to occur at allotments and facades

closer to the light industry zone boundary, and the majority of allotments will be exposed to lower levels of

noise from industrial activities.

Nonetheless, in order to ensure an adequate level of amenity for future residents and to avoid unnecessarily

constraining development within the Light Industry zone, it is recommended that provisions be adopted to

address the interface with potential future light industry development adjacent to the investigation area.

Assuming that day-time operation only is likely within the Light Industry zone, in order to achieve the indoor

day-time goal noise level of 35dB(A) as referenced above a façade reduction of 22 dB(A) is required. This

corresponds to the level of attenuation provided by Sound Exposure Category 1 (SEC 1) acoustic treatments,

and is likely to require only modest upgrades beyond standard building practice.

If night-time activities were to occur on-site, the predicted noise level of 57 dB(A) would require a façade

reduction of 27 dB(A) to achieve compliance with the night-time goal noise level of 30 dB(A). This

corresponds to the level of attenuation provided by Sound Exposure Category 2 (SEC 2) acoustic treatments

as specified by Minister’s Specification SA 78B, and is therefore likely to be achievable employing reasonable

and practicable upgrades to the building construction.

With the above treatments in place, noise from the existing light industry uses is expected to be attenuated

sufficiently to meet the internal noise level criteria of the Policy, and thereby not constrain the ongoing

operation of existing businesses within the Light Industry zone. The proposed reasonable façade treatments

will also contribute to managing potential future interface issues with currently vacant light-industrial zoned

adjoining the investigation area, and will ensure that future development is not unreasonably constrained.

The level of noise attenuation across the building façade required to achieve the internal noise levels of the

Policy when exposed to the predicted external noise levels from existing and indicative future industrial

activities are provided in Figure 5. The indicative treatments required to achieve this level of noise

attenuation (equivalent to those required by the corresponding SEC) can be derived from Appendix B.

Where the façade is not directly exposed to the noise source (i.e. facing away from the noise source or

shielded by buildings or other solid structures) the level of noise attenuation required is likely to be reduced.


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sonus.

Figure 5: Minimum required noise reduction from Light Industry 3.5 Additional Considerations An issue which is not addressed by the above approach (comprising the design of external facades to address

internal noise amenity) is the potential for complaint from occupants on balconies or in private open spaces.

Whilst such complaints cannot be pursued further through the Environment Protection Act 1993 if suitable

internal noise levels are achieved, design features such as orientation of private external space to face away

from the main noise sources would minimise the potential for future interface issues. Furthermore,

predicted noise levels exceed the relevant day-time noise criterion by less than 8dB(A); in most cases simply

locating private open space behind the first row of buildings with respect to nearby noise sources will likely

allow for the relevant outdoor goal noise level applicable under the Policy to be met. Similarly, facades not

directly exposed to the noise source (i.e. oriented away from the noise source and/or shielded by other

buildings) would likely allow for the level of noise reduction required to be reduced.

The approach of incorporating design features like orientation and shielding is consistent with the Port

Adelaide Enfield Council Development Plan provisions which recommend, amongst other things, that private

open space should be sited and designed to minimise noise impacts.




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sonus. The following provisions have been developed for inclusion in the DPA to reinforce the above objective

assessment methodology and to ensure design features such as orientation of balconies away from nearby

noise sources. The objective of the provisions is to ensure appropriate residential amenity within the subject

land, and to minimise unreasonable constraints on existing and potential future land uses desired in the

locality.

4 RECOMMENDED DPA PROVISIONS

Based on the assessment, residential development can be in accordance with the objectives of the

Development Plan in the DPA investigation area subject to the provision of suitable acoustic treatments. The

following overarching objectives have been developed to provide a framework for these treatments and to

supplement the existing Development Plan provisions:

OBJECTIVES

1 Noise sensitive development designed to provide its occupants with acceptable levels of amenity

when exposed to existing and envisaged future external noise sources.

2 Noise sensitive development that does not unreasonably interfere with the operation of existing

lawful existing and envisaged future external noise sources.


Residential Development – Interface

1 Residential development should incorporate facade acoustic treatments to achieve the

indoor noise levels recommended by the Environment Protection (Noise) Policy 2007. Unless

otherwise specified in an acoustic report prepared by a suitably qualified and experienced

Acoustic Engineer and to the satisfaction of Council, façade acoustic treatments which

achieve a noise reduction corresponding to Sound Exposure Category (SEC) 2 as defined by

the Minister’s Specification “SA 78B – Construction requirements for the control of external

sound” (SA78B) satisfies this PDC. For the purposes of this PDC, a suitably qualified and

experienced Acoustic Engineer is defined as a person having sufficient qualifications and

experience to be eligible for Membership of the Australian Acoustical Society and Engineers

Australia.


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sonus. 2 The required noise attenuation on a facade can be reduced by to SEC 1 where that facade is

shielded, consistent with the definition in SA78B, from industrial activity to the north-east,

the greyhound racing track to the north or sporting facilities to the west and north-west.

3 External noise intrusion to private and communal open spaces (available for exclusive use

by residents of each dwelling or groups of dwellings) for residential development should be

shielded from industrial activity to the north-east, the greyhound racing track to the north

or sporting venues to the north-west where practicable. The shielding can be provided by

orientation, physical structures such as wing walls or the use of existing barriers.

In addition to the above, the following is recommended:

Residential Development - Road Traffic

Designate the North-South Motorway (elevated roadway) within the Air and Noise Emissions Overlay to

address traffic noise impacts along with the corresponding provision:

4 Residential development should incorporate facade acoustic treatments to address traffic

impacts which are acoustically equivalent to the noise reduction provided by the relevant

SEC in The Minister’s Specification “SA 78B – Construction requirements for the control of

external sound” (SA78B).


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sonus. APPENDIX A: DPA Site and nearby noise sources.

Investigation Area

Greyhound Racing SA

Light Industry

FFSA VALO

Football Centre

Existing Residential

North South Motorw

ay Cowan St

Harold Tyler

Reserve

Car parking


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sonus. APPENDIX B: Example Treatments based on required noise reduction / Sound Exposure Category

Table 5: 28dB(A) reduction across the building façade (based on/consistent with SEC 2)

BUILDING ENVELOPE ELEMENT

ACOUSTIC REQUIREMENTS OF SA78B

Windows and glazed doors

Room Area of Glazing Requirement

Bedrooms (including attached non-

habitable rooms)

Restrict total glazing area to no more than 40% of the floor area

Ensure the following glass is incorporated into systems that can be sealed airtight when closed:

minimum 10mm thick glass in sliding doors;

minimum 6.38mm thick laminated glass as fixed panes, awning, casement, or side hung doors.



Habitable rooms other than bedrooms (including attached

non-habitable rooms)


Ensure the following glass is incorporated into systems that can be sealed airtight when closed:

minimum 10mm thick glass in sliding doors;

minimum 6.38mm thick laminated glass as fixed panes, awning, casement, or side hung doors.

External walls

Room

All habitable rooms

Ensure external walls are the acoustic equivalent of a brick veneer construction incorporating:

single leaf of minimum 90mm thick brick;

a row of minimum 64mm thick studwork with minimum 25mm cavity to the brick;

75mm thick insulation with a minimum density of 11kg/m3 between studwork, and;

one layer of 10mm thick plasterboard fixed to the inside face.

Roof and ceiling systems

Room Requirement

Bedrooms Ensure the roof is sheet metal or tile, and ceilings are constructed from 1 layer of 10mm thick plasterboard with 165mm thick insulation (with a minimum density of 7kg/m3) laid over the ceiling.

Ventilation

Room Requirement

All No outside air ventilation (other than openable windows) should be provided across these facades, with the exception of outside air into a ducted system via a minimum 3m length of acoustically insulated ductwork.

External Doors (other than

external glazed doors)

Room Requirement

All habitable rooms

Ensure external doors are a minimum 35mm thick solid core, fully fitted with Raven “RP8” and “RP10” (or equivalent) acoustic doors seals. These seals should be fitted and adjusted to ensure that the doors are sealed as close as practicable to airtight when closed. If a glass infill is proposed a minimum of 6.38mm thick laminated glass should be incorporated and sealed airtight into the door.

Ground Floor Room Requirement

All habitable rooms Ensure the dwelling is constructed on a concrete slab.


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sonus.

Table 6: 24dB(A) reduction across the building façade (based on/consistent with SEC 1)

BUILDING ENVELOPE ELEMENT

ACOUSTIC REQUIREMENTS OF SA78B



Bedrooms (including

attached non-habitable rooms)


Ensure a minimum 6.38mm thick laminated glass is incorporated into systems that can be sealed airtight when closed.



Habitable rooms other than bedrooms (including

attached non-habitable rooms)


Ensure a minimum 6.38mm thick laminated glass is incorporated into systems that can be sealed airtight when closed.

External walls

Room Requirement

All habitable rooms

Ensure external walls are the acoustic equivalent of:

brick veneer construction incorporating:

o single leaf of minimum 90mm thick brick;

o a row of minimum 64mm thick studwork with minimum 25mm cavity to the brick;

o 75mm thick insulation with a minimum density of 11kg/m3 between studwork, and;

o one layer of 10mm thick plasterboard fixed to the inside face.

OR;

Hebel construction incorporating:

o a row of minimum 90mm thick timber studwork;

o 75mm thick Hebel Powerpanel fixed to the studwork with minimum 22mm thick battens

o 90mm thick insulation with a density of 10.5kg/m3 between the studwork, and;

o one layer of 10mm plasterboard fixed to the inside face.

Ventilation

Room Requirement

All No outside air ventilation (other than openable windows) should be provided across these facades, with the exception of outside air into a ducted system via a minimum 3m length of acoustically insulated ductwork.

Documents

Environmental Noise Assessment sonus · to the noise from rail, road, mixed use, and industrial activity and to also be designed so as not to constrain the approved operation of existing