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8.2.23 Transport air quality corridor overlay code

8.2.23.1 Application

(1) This code applies to assessing development in the Transport air quality corridor overlay, if:
(a) assessable development where this code is an applicable code identified in the assessment criteria column of a table of assessment for an overlay (section 5.10); or
(b) impact assessable development.
(2) Land in the Transport air quality corridor overlay is identified on the Transport air quality overlay map and is included in the following sub-categories:
(a) Transport air quality corridor A sub-category;
(b) Transport air quality corridor B sub-category;
(c) Tunnel ventilation stack sub-category.
(3) When using this code, reference should be made to section 1.5 and section 5.3.3.

Note—Where this code includes performance outcomes or acceptable outcomes that relate to:

8.2.23.2 Purpose

(1) The purpose of the Transport air quality corridor overlay code is to:
(a) Implement the policy direction in the Strategic framework, in particular:
(i) Theme 3: Brisbane’s clean and green leading environmental performance and Element 3.2 – Brisbane’s environmental quality and sustainable design;
(ii) Theme 5: Brisbane’s CityShape and Element 5.8 – Brisbane’s Growth Nodes on Selected Transport Corridors.
(b) Provide for the assessment of the suitability of development in the Transport air quality corridor overlay.
(2) The purpose of the code will be achieved through the following overall outcomes:
(a) Development, in the context that air emissions are greater in transport corridors than in less busy areas, ensures that site layout and building design:
(i) minimise the impacts of air pollution from vehicle traffic on the health and wellbeing of users of a child care centre, multiple dwelling, residential care facility or retirement facility;
(ii) maximise wind movement around buildings and the dispersion of traffic air pollutants;
(iii) minimise the impacts of air pollution from a tunnel ventilation stack on the health and wellbeing of occupants of sensitive uses.

8.2.23.3 Assessment criteria

The following table identifies the assessment criteria for assessable development.

Table 8.2.23.3.A—Criteria for assessable development
Performance outcomes
Acceptable outcomes
Section A—If in the Transport air quality corridor A sub-category
PO1
Development for a multiple dwelling, residential care facility, rooming accommodation where accommodating 6 people or more, or retirement facility minimises the impact of road traffic air pollutants on the health and wellbeing of an occupier of the development through:
(a) adequate separation from the road; or
(b) provision of ducted mechanical ventilation with supply of clean outdoor air.
AO1
Development for a multiple dwelling, residential care facility, rooming accommodation where accommodating 6 people or more, or retirement facility:
(a) is set back to the greater of the requirements of any use code or the minimum separation distance, measured in the horizontal and vertical planes (refer to Figure a), from the kerb as specified in Table 8.2.23.3.B; or
(b) is installed with ducted mechanical ventilation for the supply of outdoor air in compliance with AS 1668.2-2002: The use of ventilation and air conditioning in buildings - Mechanical ventilation in buildings, and:
(i) locates the mechanical ventilation outdoor air intakes at least the minimum distance, measured in the horizontal and vertical planes (refer to Figure b), from the kerb as specified in Table 8.2.23.3.B; or
(ii) includes filtration of outdoor air to a minimum performance standard of F6 or minimum efficiency reporting value (MERV) 9.

Editor's note—MERV rating system (in accordance with the American Society of Heating, Refrigeration and Air-Conditioning) and the F rating system (in accordance with AS 1324.1-2001 Air filters for use in general ventilation and airconditioning - Application, performance and construction) are measures used to describe the efficiency with which particulate filters remove particles of a specified size from an airstream. The higher the MERV designation, the better the removal efficiency, particularly for smaller particles.

PO2
Development for a multiple dwelling, residential care facility, rooming accommodation where accommodating 6 people or more, or retirement facility minimises the impact of road traffic air pollutants on the health and wellbeing of an occupier of the development by incorporating best-practice built form and landscape design elements that maximise wind movement around buildings and the dispersion of road traffic air pollutants, including:
(a) maintaining gaps between buildings at the 3rd storey or higher;
(b) variation in the building facade, in addition to balconies;
(c) varying the building shape and form from that of neighbouring buildings;
(d) significant vegetation between the road and the building.

Note—A transport air quality corridor report prepared in accordance with the Transport air quality corridor planning scheme policy can assist in demonstrating achievement of this performance outcome.

Editor's note—A useful guide to good development design near busy roads is the Council guideline 'Designing for good air quality in transport corridors guideline'.

AO2
Development at the 3rd storey or higher for a multiple dwelling, residential care facility, rooming accommodation where accommodating 6 people or more, or retirement facility is set back at least the minimum separation distance specified in Table 8.2.23.3.B.
Section B—If in the Transport air quality corridor B sub-category
PO3
Development for a child care centre meets the air quality (planning) criteria in Table 8.2.23.3.C, to ensure that users are not exposed to harmful air pollutant levels.

Note—An air quality impact report prepared in accordance with the Air quality planning scheme policy can assist in demonstrating achievement of this performance outcome.

AO3
Development for a child care centre ensures that a habitable room and any covered or uncovered outdoor activity area is located at least the minimum distance (measured in the horizontal and vertical planes) specified in Table 8.2.23.3.B.
Section C—If within the Tunnel ventilation stack sub-category
PO4
Development does not:
(a) expose the occupants of a sensitive use to an air pollutant that exceeds the air quality planning criteria in Table 8.2.23.3.C, due to the operation of a tunnel ventilation outlet;
(b) affect the dispersion of air pollutants to the extent that existing sensitive uses will be exposed to air pollutants that exceed the air quality (planning) criteria in Table 8.2.23.3.C.

Note—An air quality impact report prepared in accordance with the Air quality planning scheme policy can assist in demonstrating achievement of this performance outcome.

AO4.1
Development has a building height which is at least 10m lower than the height of the tunnel ventilation outlet.
AO4.2
The development does not include a child care centre.
Table 8.2.23.3.B—Air quality corridor minimum separation distances
Route type
Minimum separation distance measured from the kerb
Transport air quality corridor A sub-category
Transport air quality corridor B sub-category
Motorway route
30m
80m
High-volume traffic route
20m
80m
Intermediate-volume traffic route
10m
40m
Moderate-volume traffic route
-
40m
High-volume intersection
30m
60m
Table 8.2.23.3.C—Air quality (planning) criteria
Pollutant
Averaging time
Health outcome protected
Criteria including background (µg/m3)
Criteria including background (ppm)
Nitrogen dioxide
1 hour
Health and wellbeing
250
0.12
Annual
Health and wellbeing
62
0.03
Sulfur dioxide
1 hour
Health and wellbeing
570
0.2
24 hours
Health and wellbeing
230
0.08
Annual
Health and wellbeing
57
0.02
Particulate matter (PM) as total suspended particulates (TSP)
Annual
Health and wellbeing
90
-
PM less than 10µm (PM10)
24 hours
Health and wellbeing
50
-
PM less than 2.5µm (PM2.5)
24 hours
Health and wellbeing
25
-
Annual
Health and wellbeing
8
-
Carbon monoxide
8 hour
Health and wellbeing
11,000
9
Dust deposition as insoluble solids
Annual
Protecting aesthetic environment
4g/m2/month
-
1,3-butadiene
Annual
Health and wellbeing
2.4
0.001
Acetaldehyde
1 hour
Odour
42
0.023
Acetone
1 hour
Health and wellbeing
22,000
9.2
Benzene
Annual
Health and wellbeing
10
0.003
Benzo(a)pyrene (as marker for PAH)
Annual
Health and wellbeing
0.3ng/m3
-
Cadmium and compounds (as total metal content in PM10)
Annual
Health and wellbeing
5ng/m3
-
Chromium III compounds
1 hour
Health and wellbeing
9
-
Chromium VI compounds
1 hour
IARC Group 1 carcinogen (known human carcinogen)
0.09
-
Copper dusts and mists
1 hour
Health and wellbeing
18
-
Copper fumes
1 hour
Health and wellbeing
3.7
-
Cyclohexane
1 hour
Health and wellbeing
19,000
5
Ethylbenzene
1 hour
Health and wellbeing
8,000
1.8
Formaldehyde
1 hour
Protecting aesthetic environment
96
0.07
24 hours
Health and wellbeing
54
0.04
Lead and compounds (as total metal content in TSP)
Annual
Health and wellbeing
0.5
-
Manganese and compounds (as total metal content in PM10)
Annual
Health and wellbeing
0.16
-
n-Hexane
1 hour
Health and wellbeing
3,200
0.9
Nickel and compounds (as total metal content in PM10)
Annual
Health and wellbeing
0.02
-
Styrene
1 hour
Odour
65
0.014
7 days
Health and wellbeing
280
0.06
Annual
Health and wellbeing
270
0.036
Toluene
1 hour
Odour
958
0.23
24 hours
Health and wellbeing
4,100
1
Annual
Health and wellbeing
410
0.1
Xylenes (as a total of ortho, meta and para isomers)
24 hours
Health and wellbeing
1,200
0.25
Annual
Health and wellbeing
950
0.2
Zinc chloride fumes
1 hour
Health and wellbeing
18
-
Zinc oxide fumes
1 hour
Health and wellbeing
90
-

Note—

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