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City of
Cockburn
CITY OF COCKBURN
MANAGEMENT PLAN
LOTS 14 AND 22 PROGRESS DRIVE
TABLE OF CONTENTS
INTRODUCTION ...........................................................................................3
PART 1: SUBDIVISION AND LAND USE PLAN ........................................... 4
1.0 BACKGROUND
2.0 SUBJECT LAND......................................................................................5
2.1 Location................................................................................................5
2.2 Ownership ............................................................................................5
2.3 Lot Area................................................................................................5
2.4 Zoning ..................................................................................................5
2.5 European Heritage ...............................................................................7
2.6 Aboriginal Heritage...............................................................................7
2.7 Environmental Features .......................................................................7
3.0 PLANNING CONSIDERATIONS .............................................................8
3.1 Statutory Framework ............................................................................8
3.2 Policy Framework.................................................................................8
3.3 Proposal ...............................................................................................8
3.4 Subdivision and Land Use Plan ...........................................................9
Environmental Protection and Enhancement ................................10
Visual Impact.................................................................................10
Heritage Conservation...................................................................11
Access...........................................................................................11
Management Strategy & Framework .............................................11
3.5 Planning Justifications........................................................................11
4.0 CONCLUSION.......................................................................................13
ATTACHMENT 1: Subdivision and Land Use Plan......................................14
PART 2: ENVIRONMENTAL MANAGEMENT PLAN
2
INTRODUCTION
The purpose of this Management Plan is to facilitate subdivision and development of
private recreation uses on the degraded portions of Lots 14 and 22 Progress Drive (“the
subject land”) while enhancing conservation values of the balance areas to be protected
and reserved through a subdivision process. These uses will form part of an integrated
recreation and leisure precinct, identified in the Bibra Lake Management Plan.
The subject land is reserved for ‘Parks and Recreation’ therefore pursuant to clause
16(3)(e) of the Metropolitan Region Scheme (“MRS”) a Management Plan is proposed to
be used as a guiding basis for subdivision, development and enhancement works on the
subject land.
This Management Plan is divided into two parts as follows:
Part 1: Subdivision and Land Use Plan - Outlines the relevant planning
considerations, and includes a plan to guide future subdivision and development
(Attachment 1).
Part 2: Environmental Management Plan – Prepared by ENV Australia, outlines the
relevant environmental considerations, constraints and opportunities, and the
environmental management strategy and framework to inform future subdivision and
development.
3
PART 1: SUBDIVISION AND LAND USE PLAN
1.0 BACKGROUND
The City of Cockburn owns in freehold Lots 22 and 14 Progress Drive, Bibra Lake (“the
subject land”), both of which are zoned 'Parks and Recreation' under the Metropolitan
Region Scheme (“MRS”). The subject land has been identified as an important link
between Bibra and South Lakes, and there are several areas on the subject land that
have conservation value.
There are also substantial degraded areas on the subject land which have presented an
opportunity for Council to establish 'private recreation' uses in support of an integrated
recreation and leisure precinct. This precinct is bounded by Gwilliam Drive, Progress
Drive and North Lake Road, and this proposal seeks to build upon the current activities
taking place in the area (Bibra Lake Recreation Area, Adventure World, Bungee
Jumping etc).
Council resolved at the meeting of 13 December 2007 to call for Expressions of Interest
in accordance with the requirements of Section 3.58 of the Local Government Act 1995,
for the possible development of the subject land with the intent to create a regional
recreation and leisure precinct. Registrations of Interest were called for the purchase or
lease of portions or the whole of the subject land, closing on 19 February 2008.
The submissions were assessed and a number of submissions were short-listed,
including Adventure World, Oceanic Water Babies Pty Ltd and Cockburn Ice Arena Pty
Ltd. Independent consultants Plan E were commissioned to develop a number of
concept plan options to accommodate the short listed submissions on the subject land.
Council considered these options at its 11 December 2008 meeting, and adopted a
Development Concept Plan for the subject land that aims to facilitate ‘private recreation’
uses on areas which are of least environmental value. The Subdivision and Land Use
Plan has been generally based on the concept plan adopted by Council, with some
modifications to increase the size of the area proposed to be reserved for ‘Conservation
and Recreation’.
4
2.0 SUBJECT LAND
2.1 Location
The subject land comprises Lot 14 and Lot 22 Progress Drive, Bibra Lake, which is
bounded by North Lake Road, Hope Road and Progress Drive.
2.2 Ownership
The subject land is owned by the City of Cockburn in freehold.
2.3 Lot Area
Lot 14 Progress Drive is 7.32 ha in area, and Lot 22 Progress Drive is 1.137 ha in area.
2.4 Zoning
The subject land is reserved for ‘Parks and Recreation’ under the MRS.
Reserves’ are not reserved by the Scheme.
‘Regional
North Lake Road is an ‘Other Regional Road’ under the MRS.
Figure 1. Subject Land - Lots 14 and 22 Progress Drive, Bibra Lake
5
Figure 2. Subject Land Aerial Photograph
Figure 3. City of Cockburn Town Planning Scheme No. 3
6
2.5 European Heritage
Lot 14 Progress Drive, Bibra Lake contains three mature Moreton Bay fig trees located
adjacent to Progress Drive. The trees have aesthetic and historical significance. The
subject land on which the trees stand was originally Currie’s Dairy, and the trees are a
living memorial to the dairy as they are the only remnant of the former use of the land.
This place is included on the Heritage List pursuant to clause 7.1 of the Scheme, and is
listed in the City of Cockburn Municipal Heritage Inventory (“MHI”) (place No. 36),
identified as Management Category B, which has the following management
recommendation:
“High level of protection appropriate: provide maximum encouragement to the owner
under the City of Cockburn Town Planning Scheme to conserve the significance of the
place. A more detailed heritage assessment to be undertaken before approval given for
any major redevelopment. Incentives to promote conservation should be considered.”
2.6 Aboriginal Heritage
The subject land does not contain any Aboriginal sites included on the Aboriginal
Register of Places, however Bibra Lake on the eastern side of Progress Drive is an
identified Aboriginal site (Site No. S02209).
The Department of Indigenous Affairs, and the City of Cockburn Aboriginal Advisory
Committee were consulted on the draft Management Plan, and no objections were
raised. All obligations under the Aboriginal Heritage Act 1972 will be observed in the
implementation of this Management Plan.
2.7 Environmental Features
The Environmental Management Plan prepared by ENV Australia (Part 2 of this
Management Plan) comprehensively outlines the relevant environmental considerations
for the subject land, including the physical environment; flora and vegetation; fauna;
wetlands; and constraints and opportunities.
7
3.0 PLANNING CONSIDERATIONS
3.1 Statutory Framework
The subject land is reserved for ‘Parks and Recreation’ under the MRS, and the
approval of the local government under the Scheme is not required for the
commencement or carrying out of any use or development on a ‘Regional Reserve’.
Clause 16(3)(e) of the MRS provides for works (subdivision and development) to take
place on land reserved for 'Parks and Recreation', where such works are in accordance
with a Management Plan endorsed by the WAPC.
The endorsed Management Plan will be used as the guiding basis for subdivision,
development and enhancement works on the subject land, therefore it is imperative that
it provides a comprehensive framework for assessing any future subdivision and
development proposals.
3.2 Policy Framework
The subject land is located within the ‘Leisure Precinct’ as identified in the Bibra Lake
Management Plan.
3.3 Proposal
The proposal is to subdivide the subject land into five lots, with two lots being made
available for the development of ‘recreation – private’ and ‘carpark’ uses pursuant to the
City of Cockburn Town Planning Scheme No. 3.
‘Recreation – private’ uses are defined in the Scheme as ‘premises used for indoor or
outdoor leisure, recreation or sport which are not usually open to the public without
charge’.
The remaining area of land is to be contained within proposed Lots 1, 4 and 5 which are
to be reserved for ‘Conservation and Recreation’.
The following specific uses are proposed on the subject land:
•
•
Car parking area for Adventure World (including approximately 300 bays)
Cockburn Ice Arena (Including 100 parking bays)
8
Proposed Lots 1, 4 and 5 (Conservation Lots)
Proposed Lot 4 is 3.27 ha, and is proposed to remain in the ownership of the City of
Cockburn. It is proposed to be reserved for ‘Conservation & Recreation’ under section
152 of the Planning and Development Act 2005. It contains Tappers Wetland, which is
identified as a Resource Enhancement Wetland in the Department of Environment and
Conservation (“DEC”) Geomorphic Wetland Database.
A 50m strip of land (6,530m2) along the western side of existing Lot 22 Progress Drive
will remain within proposed Lot 4. This area contains existing vegetation that will be
enhanced through revegetation and weed management.
Proposed Lot 1 is 0.1208 ha, and is also proposed to remain in the ownership of the City
of Cockburn to be reserved for ‘Conservation and Recreation’. It contains three Morton
Bay Fig trees located adjacent to Progress Drive. These trees are listed on the City of
Cockburn’s Municipal Heritage Inventory (“MHI”), and are also included on the Heritage
List pursuant to clause 7.1 of the City of Cockburn Town Planning Scheme No. 3. These
trees are proposed to be located within proposed Lot 1 to ensure their protection. The
Subdivision and Land Use Statements specify that they are to be retained and protected
as part of an application to subdivide or develop.
Proposed Lot 5 is 1.624 ha of land bounded by North Lake Road, Bibra Drive and
Progress Drive. This is proposed to be revegetated and reserved for ‘Conservation and
Recreation’.
Proposed Lot 2
Proposed Lot 2 is 1.214 ha, and is proposed to accommodate ‘recreation – private’ or
‘carpark’. It is likely that this land will be developed for car parking (approximately 300
bays) for Adventure World, which is located to the north of the subject land.
Proposed Lot 3
Proposed Lot 3 is 2.402 ha, and is proposed to accommodate ‘recreation – private’ or
‘carpark’. This lot may accommodate an ice skating facility.
3.4 Subdivision and Land Use Plan
The Subdivision and Land Use Plan (Attachment 1) forms part of this Management Plan
and has been developed as the principal plan to guide subdivision and development of
the subject land. Any proposal for subdivision or development will need to be consistent
with the Subdivision and Land Use Plan.
The Subdivision and Land Use Plan sets out the proposed subdivision layout, and
includes provisions to guide future development on the subject land. This includes
design guidelines, provisions for access, protection of heritage conservation, and the
requirement for the submission and approval of a landscape and revegetation plan as a
condition of subdivision.
9
Importantly the Subdivision and Land Use Plan restricts development of proposed Lots 2
and 3 to uses defined as ‘recreation - private’, and ‘car park’ in the Scheme, and
incidental uses that are deemed to be consistent with the adopted Management Plan.
The Subdivision and Land Use Plan specifies that proposed Lots 1, 4 and 5 are to be
reserved for ‘Conservation and Recreation’ under Section 152 of the Planning and
Development Act 2005.
Environmental Protection and Enhancement
The Subdivision and Land Use Plan will be used in conjunction with the Environmental
Management Plan to ensure that any proposed subdivision or development adequately
addresses the environmental constraints of the subject land, and enhances the
conservation values.
The Environmental Management Plan sets out the environmental management strategy
and framework to inform future subdivision and development.
The Subdivision and Land Use Plan specifies that a condition of subdivision will require
the submission and approval of a Landscaping and Revegetation Plan by the City of
Cockburn, which addresses the recommendations contained within the adopted
Management Plan. The Environmental Management Plan includes a Landscaping and
Revegetation Concept Plan which will be used to inform the preparation of a more
detailed Landscaping and Revegetation Plan at subdivision.
Visual Impact
While the subject land has a natural landscape character the land is mostly cleared and
the wetland is degraded. More than half of the subject land (5 ha) is to be reserved and
will be revegetated and enhanced. Therefore it is considered that the proposed
development in conjunction with landscaping and revegetation will enhance the
appearance of the site.
There is existing vegetation on the subject land, and Tappers Lake is proposed to be
revegetated, therefore development on the subject land will not be highly visible when
traveling south-east on North Lake Road and approaching the subject land. Traveling
north-west on North Lake Road the proposed revegetation in the south east corner of
the site (proposed Lot 5) will also serve to minimize the appearance of development on
the subject land.
Further to the north on Progress Drive there are buildings and structures evident from
the road (Adventure World), set back amongst sparse vegetation. It is considered that
the proposed subdivision and development of the subject land will be consistent with the
existing character of the western side of Progress Drive.
The corner of Bibra Drive and North Lake Road (proposed Lot 5) is a prominent corner
of the subject land, and this is proposed to be revegetated and reserved for
‘Conservation and Recreation’.
The Subdivision and Land Use Plan stipulates setback requirements for future
development to ensure it is sympathetic to the surrounding environment. These
10
requirements in conjunction with additional landscaping to Progress Drive with provide
some screening to the development.
Heritage Conservation
The Subdivision and Land Use Plan provides for the protection of the Heritage Listed
Moreton Bay Fig Trees, by locating them within proposed Lot 1, to be reserved for
‘Conservation and Recreation’, and by including a requirement for them to be protected
as part of any application to subdivide or develop.
Access
The Subdivision and Land Use Plan provides for three vehicle access points to Progress
Drive, which will ensure adequate access for each proposed future lot.
North Lake Road is an ‘Other Regional Road’, and the Subdivision and Land Use Plan
specifies that there is to be no vehicle access to North Lake Road.
Management Strategy and Framework
The Environmental Management Plan (Sections 10 and 11) outlines a management
strategy and framework which sets out objectives for the following to be considered in
more detail and the development and subdivision stage:

Urban Water Management;
Revegetation and Landscape Plan;
Fauna Management;
Construction Management.
3.5 Planning Justifications
1) The proposal will contribute to the creation an integrated recreation and leisure
precinct, consistent with the Bibra Lake Management Plan.
2) The proposed subdivision and development will result in enhanced
environmental values of the wetland, and will improve the function of the subject
land as a fauna corridor.
3) The proposed subdivision will result in 5 ha of land being reserved for
‘Conservation and Recreation’ under Section 152 of the Planning and
Development Act 2005.
4) The Subdivision and Land Use Plan will ensure future development on the
subject land is appropriate.
11
4.0 CONCLUSION
The Management Plan provides for recreation uses on the degraded portions of the
subject land, while enabling enhancement of the conservation values of the wetland
through revegetation, and the creation of corridors.
The Subdivision and Land Use Plan has been developed as the principal plan to guide
subdivision and development of the subject land. Any proposal for future subdivision or
development will need to be consistent with the Subdivision and Land Use Plan, which
includes design guidelines, provisions for access, protection of heritage conservation,
and the requirement for the submission and approval of a landscape and revegetation
plan as a condition of subdivision.
The Environmental Management Plan prepared by ENV Australia demonstrates that the
proposed uses can be accommodated, while improving the conservation values of the
subject land. It includes an environmental management strategy and framework, which
will be used in the future subdivision and development of the subject land in conjunction
with the Subdivision and Land Use Plan.
It is considered that the Management Plan will facilitate the use of the subject land in a
manner that is consistent with the intention set out in the Bibra Lake Management Plan
to create an integrated recreation and leisure precinct.
12
LOT 14 & 22 PROGRESS DRIVE,
BIBRA LAKE
ENVIRONMENTAL MANAGEMENT
PLAN
Prepared for:
City of Cockburn
Job No: 09.033
Report No: RP001
CITY OF COCKBURN - Lot 14 & 22 Progress Drive, Bibra Lake Environmental Management Plan
LOT 14 & 22 PROGRESS DRIVE,
BIBRA LAKE
ENVIRONMENTAL MANAGEMENT
PLAN
Prepared for:
City of Cockburn
Prepared by:
ENV Australia Pty Ltd
Level 7, 182 St George’s Terrace
PERTH WA 6000
Phone: (08) 9289 8360
Fax:
(08) 9322 4251
Email:
[email protected]
Prepared by:
Suzanne Smart
Status:
Final V4
QA Review:
Dale Newsome
Technical Review:
Dale Newsome
Content Review:
Dale Newsome
Date:
22 October 2009
09.033 RP001 Final V4 (22-10-2009)
TABLE OF CONTENTS
EXECUTIVE SUMMARY .......................................................................................III
1
INTRODUCTION ..........................................................................................1
1.1
BACKGROUND ................................................................................................................................... 1
2
POLICY FRAMEWORK................................................................................3
2.1
BEELIAR REGIONAL PARK MANAGEMENT PLAN ........................................................................... 3
2.2
BIBRA LAKE LANDSCAPE, RECREATIONAL AND MANAGEMENT PLAN ...................................... 3
3
PHYSICAL ENVIRONMENT ........................................................................5
3.1
CLIMATE.............................................................................................................................................. 5
3.2
TOPOGRAPHY .................................................................................................................................... 5
3.3
GEOMORPHOLOGY AND SOILS ....................................................................................................... 5
3.3.1
Geomorphology.................................................................................................................................... 5
3.3.2
Geology................................................................................................................................................ 5
3.3.3
Soils ..................................................................................................................................................... 5
3.4
ACID SULPHATE SOIL RISK MAPPING............................................................................................. 6
3.5
HYDROLOGY ...................................................................................................................................... 6
3.5.1
Groundwater Hydrology ....................................................................................................................... 6
3.5.2
Surface Water Hydrology ..................................................................................................................... 9
4
FLORA AND VEGETATION .......................................................................10
4.1
METHODS ......................................................................................................................................... 10
4.1.1
Desktop Survey.................................................................................................................................. 10
4.1.2
Field Survey ....................................................................................................................................... 10
4.1.3
Taxonomic Identification..................................................................................................................... 11
4.1.4
Checking Currency of Flora Species .................................................................................................. 11
09.033 RP001 Final V4 (22-10-2009)
4.1.5
Vegetation Descriptions ..................................................................................................................... 11
4.2
FLORA SURVEY LIMITATIONS AND CONSTRAINTS ..................................................................... 11
4.3
PERMITS ........................................................................................................................................... 13
4.4
REGIONAL SOILS, LANDFORMS AND VEGETATION .................................................................... 13
4.4.1
Soils and Landforms........................................................................................................................... 13
4.4.2
Vegetation Complex Mapping ............................................................................................................ 14
4.4.3
Floristic Community Types ................................................................................................................. 14
4.5
DATABASE SEARCH ........................................................................................................................ 15
4.6
FIELD SURVEY- FLORA ................................................................................................................... 15
4.6.1
Flora ................................................................................................................................................... 15
4.6.2
Protected Flora................................................................................................................................... 15
4.6.3
Introduced Flora ................................................................................................................................. 16
4.7
FIELD SURVEY- VEGETATION ........................................................................................................ 17
4.7.1
Vegetation .......................................................................................................................................... 17
4.7.2
Vegetation Condition .......................................................................................................................... 17
4.7.3
5
FAUNA .......................................................................................................19
5.1
FAUNA SURVEY METHODOLOGY .................................................................................................. 19
5.1.1
Desktop Review ................................................................................................................................. 19
5.1.2
Timing of Survey ................................................................................................................................ 19
5.1.3
Habitat Assessment ........................................................................................................................... 20
5.1.4
Opportunistic Searches ...................................................................................................................... 20
5.2
VERTEBRATE FAUNA ...................................................................................................................... 20
5.2.1
Fauna Survey Limitations................................................................................................................... 20
5.3
FAUNA RESULTS.............................................................................................................................. 21
09.033 RP001 Final V4 (22-10-2009)
5.3.1
Vertebrate Fauna Habitat Types ........................................................................................................ 21
5.3.2
Connectivity and Ecological Linkages ................................................................................................ 21
5.3.3
Fauna Species Previously Recorded in the Region ........................................................................... 22
5.3.4
Conservation Significant Fauna ......................................................................................................... 22
5.4
MOSQUITO AND MIDGES ................................................................................................................ 23
6
WETLANDS................................................................................................25
6.1
WETLANDS OF SIGNIFICANCE ON SITE........................................................................................ 25
6.2
GEOMORPHIC WETLANDS OF THE SWAN COASTAL PLAIN....................................................... 25
6.3
WETLAND BUFFERS ........................................................................................................................ 26
6.4
SUMMARY......................................................................................................................................... 27
7
PROPOSED SUBDIVISION .......................................................................28
8
CONSTRAINTS AND OPPORTUNITIES ...................................................29
8.1
ACID SULPHATE SOILS ................................................................................................................... 29
8.2
HYDROLOGY .................................................................................................................................... 29
8.2.1
Groundwater ...................................................................................................................................... 29
8.2.2
Surface Water .................................................................................................................................... 30
8.3
FLORA AND VEGETATION............................................................................................................... 30
8.3.1
Threatened, Declared and Priority Rare Flora.................................................................................... 30
8.3.2
Weeds ................................................................................................................................................ 31
8.3.3
Vegetation Condition .......................................................................................................................... 31
8.3.4
8.3.5
Locally Significant Species................................................................................................................. 32
8.3.6
Spring Survey..................................................................................................................................... 32
8.4
FAUNA ............................................................................................................................................... 32
09.033 RP001 Final V4 (22-10-2009)
8.5
WETLANDS ....................................................................................................................................... 32
9
MANAGEMENT STRATEGY......................................................................34
9.1
URBAN WATER MANAGEMENT ...................................................................................................... 34
9.1.1
Objectives .......................................................................................................................................... 34
9.1.2
Water Conservation............................................................................................................................ 34
9.1.3
Water Quantity Management ............................................................................................................. 34
9.1.4
Water Quality Management................................................................................................................ 35
9.2
WETLANDS ....................................................................................................................................... 37
9.2.1
Objectives .......................................................................................................................................... 37
9.2.2
Vegetation and Flora .......................................................................................................................... 37
9.2.3
Hydrology ........................................................................................................................................... 37
9.2.4
Wetland Buffers.................................................................................................................................. 37
9.2.5
Community Use and Appreciation...................................................................................................... 39
9.3
REVEGETATION AND LANDSCAPE PLAN...................................................................................... 39
9.3.1
Objectives .......................................................................................................................................... 39
9.3.2
Weeds ................................................................................................................................................ 40
9.3.3
Revegetation/ Rehabilitation .............................................................................................................. 41
9.3.4
Car Park Landscaping........................................................................................................................ 42
9.4
FAUNA MANAGEMENT .................................................................................................................... 43
9.4.1
Native Fauna...................................................................................................................................... 43
9.4.2
Midges and Mosquitoes ..................................................................................................................... 44
9.5
CONSTRUCTION MANAGEMENT.................................................................................................... 45
9.5.1
Objectives .......................................................................................................................................... 45
9.5.2
Acid Sulphate Soils Management ...................................................................................................... 45
9.5.3
Dewatering/Dust Suppression............................................................................................................ 45
09.033 RP001 Final V4 (22-10-2009)
9.5.4
Fencing .............................................................................................................................................. 45
10
MANAGEMENT FRAMEWORK .................................................................46
11
REFERENCES ...........................................................................................47
FIGURES
FIGURE 1
LOCATION PLAN
FIGURE 2
CLIMATE
FIGURE 3
TOPOGRAPHY
FIGURE 4
GEOMORPHOLOGY AND SOILS
FIGURE 5
GROUNDWATER LEVELS
FIGURE 6
VEGETATION UNITS
FIGURE 7
VEGETATION CONDITION
FIGURE 8
WETLANDS
FIGURE 9
PROPOSED SUBDIVSION
FIGURE 10
PROPOSED LAND USE
FIGURE 11
WETLAND BUFFERS
FIGURE 12
CONSERVATION AREA CONCEPT PLAN
TABLES
TABLE 1
GROUNDWATER MONITORING BORE DETAILS
TABLE 2
ESTIMATED AVERAGE ANNUAL MAXIMUM GROUNDWATER LEVELS
TABLE 3
GROUNDWATER QUALITY
TABLE 4
LIMITATIONS AND CONSTRAINTS ASSOCIATED WITH THE SITE’S FLORA AND
VEGETATION SURVEY
TABLE 5
WEED SPECIES IDENTIFIED
TABLE 6
LIMITATIONS AND CONSTRAINTS ASSOCIATED WITH THE SITE’S FAUNA
SURVEY
TABLE 7
WETLANDS AND THEIR CLASSIFICATIONS ON SITE
TABLE 8
WETLAND MANAGEMENT CATEGORIES AND OBJECTIVES
TABLE 9
RECOMMENDED SPECIES TO USE IN REHABILITATION
TABLE 10
MANAGEMENT PLAN RECOMMENDATIONS
09.033 RP001 Final V4 (22-10-2009)
APPENDICES
APPENDIX A
LITHOLOGICAL LOGS
APPENDIX B
DEC DATABASE SEARCH RESULTS
APPENDIX C
FLORA SPECIES LIST
APPENDIX D
ENVIRONMENTAL WEEDS AND DECLARED PLANT CATEGORIES
APPENDIX E
SITE PHOTOGRAPHS
APPENDIX F
BUSH FOREVER CONDITION SCALE
APPENDIX G
FAUNA SPECIES PREVIOUSLY RECORDED IN THE REGION
09.033 RP001 Final V4 (22-10-2009)
CITY OF COCKBURN - Lot 14 & 22 Progress Drive, Bibra Lake: Environmental Management Plan
STATEMENT OF LIMITATIONS
Scope of Services
This environmental site assessment report (“the report”) has been prepared in accordance
with the scope of services set out in the contract, or as otherwise agreed, between the
Client and ENV.Australia Pty Ltd (ENV) (“scope of services”). In some circumstances the
scope of services may have been limited by a range of factors such as time, budget,
access and/or site disturbance constraints.
Reliance on Data
In preparing the report, ENV has relied upon data, surveys, analyses, designs, plans and
other information provided by the Client and other individuals and organisations, most of
which are referred to in the report (“the data”). Except as otherwise stated in the report,
ENV has not verified the accuracy or completeness of the data. To the extent that the
statements, opinions, facts, information, conclusions and/or recommendations in the
report (“conclusions”) are based in whole or part on the data, those conclusions are
contingent upon the accuracy and completeness of the data. ENV will not be liable in
relation to incorrect conclusions should any data, information or condition be incorrect or
have been concealed, withheld, misrepresented or otherwise not fully disclosed to ENV.
Environmental Conclusions
In accordance with the scope of services, ENV has relied upon the data and has
conducted environmental field monitoring and/or testing in the preparation of the report.
The nature and extent of monitoring and/or testing conducted is described in the report.
On all sites, varying degrees of non-uniformity of the vertical and horizontal soil or
groundwater conditions are encountered. Hence no monitoring, common testing or
sampling technique can eliminate the possibility that monitoring or testing results/samples
are not totally representative of soil and/or groundwater conditions encountered. The
conclusions are based upon the data and the environmental field monitoring and/or testing
and are therefore merely indicative of the environmental condition of the site at the time of
preparing the report, including the presence or otherwise of contaminants or emissions.
Also it should be recognised that site conditions, including the extent and concentration of
contaminants, can change with time.
Within the limitations imposed by the scope of services, the monitoring, testing, sampling
and preparation of this report have been undertaken and performed in a professional
manner, in accordance with generally accepted practices and using a degree of skill and
care ordinarily exercised by reputable environmental consultants under similar
circumstances. No other warranty, expressed or implied, is made.
Page i
09.033 RP001 Final V4 (22-10-2009)
Report for Benefit of Client
The report has been prepared for the benefit of the Client and no other party. ENV
assumes no responsibility and will not be liable to any other person or organisation for or
in relation to any matter dealt with or conclusions expressed in the report, or for any loss
or damage suffered by any other person or organisation arising from matters dealt with or
conclusions expressed in the report (including without limitation matters arising from any
negligent act or omission of ENV or for any loss or damage suffered by any other party
relying upon the matters dealt with or conclusions expressed in the report). Other parties
should not rely upon the report or the accuracy or completeness of any conclusions and
should make their own enquiries and obtain independent advice in relation to such
matters.
Other Limitations
ENV will not be liable to update or revise the report to take into account any events or
emergent circumstances or facts occurring or becoming apparent after the date of the
report.
The scope of services did not include any assessment of the title to or ownership of the
properties, buildings and structures referred to in the report nor the application or
interpretation of laws in the jurisdiction in which those properties, buildings and structures
are located.
Page ii
09.033 RP001 Final V4 (22-10-2009)
EXECUTIVE SUMMARY
ENV Australia Pty Ltd has been commissioned by the City of Cockburn to prepare this
Environmental Management Plan to assess the constraints and opportunities associated
with the future subdivision of Lots 12 & 22 Progress Drive in Bibra Lake.
The Site is within the eastern chain of the Beeliar Wetlands which extend from Blue Gum
Lake in the north to the Spectacles in the South all of which is part of the Beeliar Regional
Park. Locally, it lies between Bibra Lake and South Lake.
The site is currently zoned Parks and Recreation under the Metropolitan Regional
Scheme and the City of Cockburns’ Town Planning Scheme No.3 and is owned by the
City of Cockburn.
The proposed development of the Site is largely unconfirmed at this stage as it is the
intention of the City to sell or lease three lots for private recreation purposes after
subdivision and retaining the fourth lot in their ownership for conservation purposes.
The environmental opportunities and constraints on the site area as follows:
•
The future design of the subdivision must consider the presence of ASS through the
layout, design and should minimise the extent of the impacts given the proximity to
significant water bodies.
•
Winter groundwater levels across the site are approximately 14-15mAHD with
groundwater at surface in wetland areas but ranging to an approximate depth of over
3m. Separation to groundwater can be achieved in the development through
importation of fill.
•
The Site does not receive any surface water flows from external catchments nor has
any streams within it. Post-development management of surface water can be
achieved through the use of water sensitive design initiatives.
•
There are likely no constraints posed by priority or threatened flora within the Site as
the vegetation present is degraded or completely degraded likewise there is no
significant habitat for utilisation from fauna.
•
Tappers Lake within the site is a Resource Enhancement Wetland within the site that
is in a degraded condition and infested with weeds.
The following environmental management strategies are proposed for the site;
• Water quantity and water quality should be maintained to pre-development conditions.
Stormwater treatment options for future development of the site include the use of
structural and non-structural controls to achieve water sensitive urban design.
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09.033 RP001 Final V4 (22-10-2009)
•
Tappers Lake is proposed to be enhanced from its degraded condition through
revegetation and rehabilitation. Wetland buffer areas will be used to provide
separation from future development and maintain the functioning of the wetland.
•
Rehabilitation and revegetation is proposed for the majority of the proposed
conservation area with a focus on eradication of weed species and the plantings of
native vegetation.
•
Revegetation of the site will provide vegetation cover, to encourage terrestrial fauna
and native birds to the site which will increase the value of the site as an ecological
link between Bibra Lake and South Lake. There is a provision for fauna underpasses
in the upgrade project for North Lake road.
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09.033 RP001 Final V4 (22-10-2009)
1
INTRODUCTION
ENV Australia (ENV) has been commissioned by the City of Cockburn to prepare
an Environmental Management Plan to support subdivision of Lots 14 and 22
Progress Drive.
Lots 14 and 22 Progress Drive (herein referred to as the Site) are located within
the suburb of Bibra Lake within the City of Cockburn approximately 15 km
southwest of the Perth Central Business District (Figure 1). The Site is bound by
Progress Drive to the north and North Lake Rd to the south.
The Site is zoned Parks and Recreation under the Metropolitan Regional
Scheme, this zoning will be maintained through subdivision.
This plan has been prepared to support the City of Cockburns’ application for
subdivision and the development of ‘private recreation’ uses on the degraded
portions of the subject land while enhancing conservation values of the balance
of the property.
This plan is also being prepared to support the development of private recreation
opportunities and provide the environmental management objectives for this
development.
Although this site is largely cleared and major roads and other infrastructure
prohibit vegetation linkage, it forms part of the Beeliar Regional Park, which is
considered to be an important ecological linkage for the movement of a variety of
fauna to regional parks and wetlands. The Site acts as a stepping stone
connecting South Lake in the south west and Bibra Lake in the north east.
This report provides the environmental context and management objectives of
the future subdivision and considers the existing physical environment including
hydrology, acid sulphate soils, vegetation, flora, and fauna and prescribes
management post development of these features.
1.1
BACKGROUND
The Site is currently unused with no existing structures/infrastructure present and
is fenced from public access. There is minimal natural vegetation covering the
site (described in Section 5) and there is a small wetland on its southern border
(described in Section 7).
The Site is within the eastern chain of the Beeliar Wetlands which extend from
Blue Gum Lake in the north to the Spectacles in the South all of which is part of
the Beeliar Regional Park. Locally, it lies between Bibra Lake and South Lake.
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09.033 RP001 Final V4 (22-10-2009)
The site is currently zoned Parks and Recreation under the Metropolitan
Regional Scheme and the City of Cockburns’ Town Planning Scheme No.3 and
is owned by the City of Cockburn.
The Bibra Lake area is a significant conservation and recreation area within the
City of Cockburn. The area attracts a large number of visitors to its active and
passive public open space areas with a number of built recreation facilities such
as playgrounds and the Adventure World Theme Park along with natural
environment recreation areas including woodland paths and wetland boardwalks.
In 1843, the site was purchased by Benedict Von Bibra (for whom Bibra Lake
was named), in 1895 Mary Ann Tapper purchased the area and cleared 20 acres
for market gardening and an orchard. Tapper’s Lake within the Site is named for
the Tapper family. The Tappers sold part of their land to the Currie brothers who
then established a successful dairy and resided there until the 1920s.
Located within the Site is a European cultural heritage site as registered with the
City of Cockburn Municipal Heritage Inventory. Three mature Moreton Bay Fig
trees were planted by early settlers, the Currie Brothers. The trees are located in
the northwest corner of the Site are considered significant for historical and
aesthetic reasons.
The area is considered significant to Aboriginal people although there are no
Department of Indigenous Affairs registered Aboriginal sites within the Site.
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09.033 RP001 Final V4 (22-10-2009)
2
POLICY FRAMEWORK
2.1
BEELIAR REGIONAL PARK MANAGEMENT PLAN
The Beeliar Regional Park Management Plan (BRMP) was prepared in 2006 by
the Department of Conservation and Land Management (now Department of
Environment and Conservation) on behalf of the Conservation Commission of
Western Australia.
The BRPMP provides strategies and broad management direction for protection
and enhancement of the conservation, recreation and landscape values of
Beeliar Regional Park.
This management plan is consistent with the objectives of the BRPMP.
2.2
BIBRA LAKE LANDSCAPE, RECREATIONAL AND MANAGEMENT
PLAN
The Bibra Lake Land, Recreation, and Environment Plan (Bibra Lake LREP) was
released in May 2009 (Stratagen, 2009) to provide a framework through which
the desired recreational, social and ecological roles of the Bibra Lake planning
area may be enhanced and managed.
The management objectives outlined in the plan are to:
1. Protect, enhance, and foster the natural environmental values of Bibra Lake.
2. Protect and enhance the cultural and heritage values of Bibra Lake.
3. Create a distinctive identity for Bibra Lake as a community destination and
place of connection to the natural environment
4. Provide and maintain a network of access around Bibra Lake; enabling the
values of the lake and surrounds to be explored and appreciated by the wider
community while still protecting the natural environment.
5. Enhance and diversify environmental
opportunities at Bibra Lake.
education
and
interpretation
6. Enhance and diversify cultural and heritage education and interpretation
opportunities at Bibra Lake.
7. Support and expand community involvement in environmental protection
activities and environmentally sensitive recreational use.
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09.033 RP001 Final V4 (22-10-2009)
8. Develop a revenue stream for the ongoing management of Bibra Lake and
surrounds, based on commercial land use options that are compatible with
other Management Plan objectives.
9. Maintain and make accessible, a body of applied research knowledge related
to environmental management at Bibra Lake, for application on site and
elsewhere.
The site is identified in the report as being part of the Recreation management
zone whose emphasis is on providing recreation opportunities consistent with the
values of the area, community demand and appropriate management. This
report states that visitor access should be controlled through the sensitive
placement and provision of access and facilities.
This environmental management plan is consistent with the Bibra Lake Land,
Recreation and Environmental Management Plan.
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09.033 RP001 Final V4 (22-10-2009)
3
PHYSICAL ENVIRONMENT
3.1
CLIMATE
The City of Cockburn is characterised by a Mediterranean climate with cool, wet
winters and dry, hot summers.
Mean annual rainfall as recorded from 1944-2008 at the Bureau of Meteorology’s
Perth Airport Station (009021) is 780 mm (Figure 2).
The mean maximum temperature varies from and 31.8C in summer to 17.9 in
winter on average.
3.2
TOPOGRAPHY
The Site is predominantly low lying and flat with topography generally between
14-17mAHD (Figure 3). Trappers Lake, located on the northwest side of the site
is the lowest point at 14 mAHD as the site gently rises eastward to 17mAHD
adjacent to Progress Drive.
3.3
GEOMORPHOLOGY AND SOILS
3.3.1
Geomorphology
The geomorphology of the site (Figure 4) comprises the following units, as
described in Fremantle 1:50 000 Environmental Geology Series Map, Sheet
2033- II and Sheet 2033 III (Geological Survey, 1985):
•
Lm: marsh in interbarrier depression, high level
The topography is characterized by sharp concave break of slope.
3.3.2
Geology
The 1:50 000 Environmental Geology Sheet Fremantle Sheet 2033-II and Part
Sheet 2033-III underlying geology of the site is made up predominantly of
Holocene swamp deposits (Qhw).
3.3.3
Soils
The 1:50 000 Environmental Geology Sheet Fremantle Sheet 2033-II and Part
Sheet 2033-III shows that the site is characterised by peaty silt. The peaty silt is
black, friable silt with abundant organic material with variable fine quartz sand
content, soft and of lacustrine origin.
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09.033 RP001 Final V4 (22-10-2009)
As part of the installation of groundwater monitoring wells by ENV on 7 April 2009
the soil profile was also examined within the site. The soil profile within the
monitoring wells was generally characterised by grey sands, lithological logs are
included in Appendix A.
3.4
ACID SULPHATE SOIL RISK MAPPING
A review of the Western Australian Planning Commission (WAPC) Bulletin 64ASS Risk Mapping dataset (WAPC, 2007) revealed that the majority of the site is
mapped as having a ‘high to moderate ASS disturbance risk occurring within 3 m
of the ground surface’. The eastern corner of the site is mapped as having
moderate to low ASS disturbance risk.
The site inspection conducted by ENV on 7/5/09 indicated that there may be
PASS (Potential Acid Sulphate Soils) or AASS (Actual Acid Sulphate Soils)
within, or nearby to the site.
This site inspection was conducted in accordance with Draft Identification and
Investigation of Acid Sulphate Soils (DEC 2006). This guideline outlines a series
of soil, water and vegetation characteristics, along with the inspection of any
former or existing infrastructures that may indicate PASS or AASS.
Topographical observations on site noted the low lying area around the wetland
as being a possible source of acid sulphate soils. For PASS indicators,
waterlogged soils may be found near this wetland at the western edge of the site,
especially during the winter months when the wetland may be inundated.
Peat or peaty soils are another indicator of PASS. These types of soils were
observed from the soil profile for monitoring well MW1 and are noted in field logs
from that location. Rotten egg gas, or hydrogen sulphide is also an indicator of
PASS. This was also observed at bore MW1 and noted in the field logs.
Vegetation that is tolerant of salt, acid, or waterlogged conditions are again,
indicators of PASS. Melaleuca raphiophylla, commonly known as the paperbark,
was observed, with this species classified as being wetland dependent. Further
information regarding the vegetation found on site is found in Section 5.7.
3.5
HYDROLOGY
3.5.1
Groundwater Hydrology
Groundwater Levels
On 7 April, 2009 ENV staff installed 4 spatially distributed groundwater
monitoring bores within the Site. The bores were installed by hand auger and 3
bores were constructed with 50mm PVC casing. All constructed bores were
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09.033 RP001 Final V4 (22-10-2009)
slotted in the lower 0.5m which was fitted with filter sock and packed with gravel.
Lithological logs are contained in Appendix A. An additional monitoring bore was
found on site that has been incorporated into this study.
All bores were surveyed by eDrill to Australian Height Datum.
construction details are included in Table 1 below and in Figure 5.
Survey and
Additionally, groundwater levels were measured in 2 nearby Department of Water
bores. Department of Water surface water staff gauges in Bibra Lake and South
Lake were dry at the time of the field investigation. Standing water levels in each
lake were included as part of the survey performed by eDrill.
Table 1: Groundwater Monitoring Bore Survey Details
MGA1 Zone 50 Coordinates
Surveyed Levels to mAHD2
Groundwater Levels
(7/4/09)
3
NS
Bore
Easting
TOC
4
Northing
Depth
below
Level
TOC
5
Refusal
MW1
389064
6447677
18.8
-
MW2
388844
6447757
14.658
15.348
2.255
13.093
MW3
388559
6448058
15.477
16.347
3.57
12.777
MW4
388758
6447944
15.698
16.873
3.88
12.993
388661
6447820
14.263
14.483
2.03
12.453
existing
bore
at 4m
<14.8
Department of Water Groundwater Monitoring Bores
BM5C
390165
6448261
25.965
25.965
14.059
11.906
BM2C
388502
6448887
17.278
17.945
1.73
16.18
Surface Water Monitoring Sites
Bibra
Lake
South
Lake
1.
2.
3.
4.
5.
388750
6448905
13.324
388520.4
6447603
12.661
Map Grid Australia (MGA)
metres Australian Height Datum (mAHD)
Natural Surface (NS)
Top of Casing (TOC)
Bore not surveyed, NS estimated from Topography
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09.033 RP001 Final V4 (22-10-2009)
The average annual maximum groundwater levels (AAMGL) have been
calculated from the Department of Water’s long term monitoring records.
The site is situated directly between Bibra Lake and South Lake with levels in
these lakes having a direct impact on the levels within the site. The average
difference between the calculated AAMGL and the levels found on 7/4/09 is
1.602m. The average difference has been applied as a correction to water levels
found within the site to achieve the AAMGL values shown below in Table 2 and
as contours across the site in Figure 5.
Table 2: Estimated Average Annual Maximum Groundwater Levels
Monitoring Site
AAMGL (mAHD)
Depth to AAMGL (m)
MW2
14.658
0
MW3
14.379
1.098
MW4
14.595
1.103
existing bore
14.055
0.208
BM2C
12.899
13.066
BM5C
16.379
0.899
Bibra Lake
15.01
-
South Lake
14.178
-
Generally, AAMGL levels across the site are within 1m of the surface with
groundwater flowing in a westerly direction towards South Lake. Seasonal
variation of groundwater based on Department of Water bores is approximately
1m.
Groundwater Quality
Groundwater samples were collected from 2 bores on 7 April 2009 and analysed
for physical parameters and nutrients. Physical parameters were tested in situ
and nutrients were tested in a NATA approved laboratory.
Table 3: Groundwater Quality (7/4/09)
EC
mS/cm
MW2
MW3
1
SCCP
Target
pH
Total P
mg/L
PO4
mg/L
Total N
mg/L
NO3-N
mg/L
NH3-N
mg/L
TKN
mg/L
0.71
6.00
0.09
0.07
1.4
0.07
0.27
1.3
1.84
6.26
0.26
0.23
3.7
0.07
0.86
3.6
0.1
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09.033 RP001 Final V4 (22-10-2009)
1
EC
mS/cm
pH
Total P
mg/L
ANZECC
Drinking
Water
PO4
mg/L
Total N
mg/L
NO3-N
mg/L
NH3-N
mg/L
TKN
mg/L
11.3
1.Swan Canning Cleanup Program
Nutrients across the site is generally above SCCP recommended values.
Electrical conductivity indicates the groundwater is fresh with low salinity. pH is
slightly acidic within the site.
3.5.2
Surface Water Hydrology
Surface water flow across the site is generally in a westerly direction as diffuse
overland flow towards Tappers Lake.
At the time of the site visit there was no open water in Tappers Lake for water
quality sampling. Aerial photographs indicate that water does pond in Tappers
Lake seasonally.
Although Bibra Lake is an expression of groundwater it does receive main
drainage from the surrounding urban environment (Stratagen, 2009). The 1 in
100 year Average Recurrence Interval (ARI) flood levels are unknown for Bibra
Lake but the levels of the lake are controlled to 15 mAHD by a pump rate of 100
l/s (pers comm., James Wegner, Water Corporation)
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09.033 RP001 Final V4 (22-10-2009)
4
FLORA AND VEGETATION
ENV undertook a flora and vegetation assessment to gain an understanding of
the types and condition of the vegetation present on the Site.
4.1
METHODS
The flora and vegetation survey was carried out in a manner designed to be
compliant with EPA requirements for the environmental surveying and reporting
for flora and vegetation in Western Australia, as set out in the following
documents:
•
Environmental Protection of Native Vegetation in Western Australia: Clearing
of Native Vegetation with Particular Reference to Agricultural Areas. Position
Statement No. 2 (EPA 2000);
•
Terrestrial Biological Surveys as an Element of Biodiversity Protection.
Position Statement No. 3 (EPA 2002); and
•
EPA Guidance for the Assessment of Environmental Factors: Terrestrial Flora
and Vegetation Surveys for Environmental Impact Assessment in Western
Australia No. 51 (EPA 2004).
The methodology involved the following key steps:
4.1.1
Desktop Survey
The purpose of a desktop survey is to gather background information on the
project area and the flora species and vegetation it may support. A request for a
database search was submitted to the DEC on 31 March 2009 to ascertain
whether any Declared Rare or Priority species had been recorded within 11 km of
the site(320 31’ - 320 36’ S and 1150 42’ - 1150 48’ E (GDA94). A similar process
was followed to establish whether there were any Threatened or Priority
Ecological Communities present. A list of expected Declared Rare or Priority
species, and Threatened or Priority Ecological Communities that could occur on
landforms in the project area was then compiled.
4.1.2
Field Survey
On 6 April 2009 an ENV botanist visited the site and conducted a vegetation
survey by traversing the property on foot. Data was collected from relévés1 in the
1
For the purposes of this flora and vegetation assessment, a relévé is defined as an unconfined
survey area in which a general statement about the floristic composition of the location can be
made.
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09.033 RP001 Final V4 (22-10-2009)
survey area, and geographic coordinates noted for changes in vegetation type.
The information noted at each site included landscape features, soils, bare
ground, and disturbance levels. All flora species occurring in each vegetation
type were recorded, including information on height and percentage cover.
Photographs were taken of each site.
During the field survey, botanists traversed the entire site searching for potential
Declared Rare and/ or Priority flora populations. If a suspected significant species
was located, a photograph was taken as well as a GPS coordinate. The number
of specimens present was also recorded to ascertain the importance of each
population.
4.1.3
Taxonomic Identification
Where field identification of plant taxa was not possible, specimens were
collected systematically for later identification at the Western Australian
Herbarium by comparison with the reference collection and use of identification
keys.
4.1.4
Checking Currency of Flora Species
Once the field survey was completed, the species found along the proposed
alignment were compiled into a list. This list was checked against FloraBase
(Western Australian Herbarium [WAH] 2009) and Atkins (2008) Declared Rare
and Priority Flora list to determine whether any of the species were listed as Rare
or Priority species. The species list was also checked against the EPBC Act 1999
listing of Threatened species to determine whether any were federally listed
(DEWHA 2009).
4.1.5
Vegetation Descriptions
Vegetation unit descriptions were tabulated and communities were mapped. The
vegetation descriptions for all communities across the site were then referenced
against Gibson et al. (1994) to determine the potential for the site to support
TECs. FCTs were inferred from those documented in Gibson et al. on the basis
of species composition, soils and topography.
4.2
FLORA SURVEY LIMITATIONS AND CONSTRAINTS
It is important to note the specific constraints imposed on surveys. Constraints
are often difficult to predict, as is the extent to which they influence survey
outcomes. A spring survey has not been carried out over the Site because due to
the timing constraints of this management plan. Survey constraints of the flora
and vegetation survey are detailed in Table 4.
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09.033 RP001 Final V4 (22-10-2009)
Table 4: Limitations and Constraints Associated with the Site’s Flora and Vegetation
Survey
Variable
Impact on Survey Outcomes
Access Problems
No access problems were encountered during the field
survey.
Experience levels
The
personnel
who
executed
this
survey
are
practitioners suitably qualified in their appropriate
fields:
•
Coordinating
Botanist:
Ms
Natalie
Pawley
(Environmental Scientist/ Botanist);
•
Field Staff: Ms Natalie Pawley;
•
Taxonomy: Ms Beverley Koch (Taxonomist); and
•
Data Interpretation: Ms Natalie Pawley.
Timing , weather,
2
The survey was undertaken on 2 April 2009. The area
season.
had received 15.2 millimetres of rain in the three months
preceding the survey date (January to March 2009) (BOM
2009). This is comparable to the long term average for
the Perth Metropolitan Area.
Flora composition changes over time, with flora species
having specific growing periods, especially annuals and
ephemerals (some plants lasting for a markedly brief
time, some only a day or two). Therefore the results of
future botanical surveys in this location may differ from
the results of this survey.
Completeness
Species that were insufficiently mature or dead were
identified in the field to genus or family level only (where
possible).
A comprehensive species list has not been prepared for
areas that do not constitute a natural vegetation area,
such as gardens or areas that have been totally cleared.
2
EPA Guidance Statement 51 (2004) stipulates that flora and vegetation surveys should be
undertaken following the season that contributes the greatest rainfall in the region. In the Southwest Province the main rain is in winter, requiring surveys to be undertaken in spring. Short-term
variations in normal weather patterns (e.g. drought) may necessitate supplementary survey work at
other times of year or in later years to take into account temporal changes in diversity.
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09.033 RP001 Final V4 (22-10-2009)
Variable
Determination
This survey makes inferences about vegetation units that
have the potential to be TECs, a judgement which is the
responsibility of the consultant, which is then subject to
consideration by DEC personnel.
The taxonomy and conservation status of the Western
Australian flora are dynamic. This report was prepared in
reliance on taxonomy and conservation current at the
time, but it should be noted this may change.
4.3
PERMITS
Specimens collected during the survey were taken by permit of and subject to the
conditions of the licences SL008006 and 116-0708 issued to Ms Natalie Pawley
under sections 23C and 23F of the WC Act (1950).
4.4
REGIONAL SOILS, LANDFORMS AND VEGETATION
For a development proposal to be assessed in terms of the flora and vegetation
values that may be impacted upon, an understanding of the vegetation
communities at the site in question is required. In Western Australia, there are
various floristic reports that detail a region’s botanical values.
In the Swan Coastal Plain portion of the Perth Metropolitan Region the Bush
Forever document describes vegetation communities as vegetation complexes,
and maps the distribution of each complex (Government of Western Australia,
2000a).
Vegetation complexes are defined as a combination of distinct site vegetation
types, usually associated with a particular geomorphic, climatic, floristic and
vegetation structural association. Vegetation complexes are based on the pattern
of vegetation at a regional scale, as it reflects the underlying key determining
factors of landforms, climate and soils.
The soils and landform unit, as well as the vegetation complexes the site
supports, are described below:
4.4.1
Soils and Landforms
The site occurs on the Swan Coastal Plain portion of the Darling System
(Churchward & McArthur 1978). The Swan Coastal plain consists of aeolian and
fluviatile deposits: specifically the site is on:
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09.033 RP001 Final V4 (22-10-2009)
4.4.2
•
Bassendean unit: Sand Plains with low dunes and occasional swamps; iron
or humus podzols; and
•
Herdsman unit: Peaty swamps associated Bassendean and Karrakatta units.
Vegetation Complex Mapping
Heddle et al. (1978) mapped the area as containing two Swan Coastal Plain
vegetation complexes which are related to the underlying soil profile
(Government of Western Australia 2000a):
•
Herdsman Complex – Sedgeland and fringing woodland of Eucalyptus rudis –
Melaleuca spp.
Bush Forever gives an estimate of the percentage of each complex that remains
within the Bush Forever study area compared to its pre-European settlement
extent, so an estimate of the scarcity of each complex can be determined. On the
Swan Coastal Plain, 31% of the Herdsman Complex is estimated to remain
(Government of Western Australia 2000a).
The Environmental Protection Authority (EPA) recognises that native vegetation
complexes which have less than 10% of pre-European clearing extent remaining
in the Bush Forever study area within the Perth Metropolitan Region may be
considered regionally significant (EPA 2006).
4.4.3
Floristic Community Types
The site occurs at an interface between the Bassendean and Spearwood Dunes
systems which are recognised as containing 20 Swan Coastal Plain (SCP)
Floristic Community Type (FCTs) as described by Gibson et al. (1994):
Of these communities 20a and 26a are listed as TEC under the Commonwealth
Environmental Protection and Biodiversity Conservation Act 1999 and
communities 21c, 22, 23b, 24 and 25 are listed as PECs by the DEC.
Descriptions of these FCTs are included below:
•
SCP20a – Banksia attenuata woodlands over species rich dense shrublands;
•
SCP21c - Low lying Banksia attenuata woodlands or shrublands;
•
SCP22 - Banksia ilicifolia woodlands;
•
SCP23b - Northern Banksia attenuata – Banksia menziesii woodlands;
•
SCP24 – Northern Spearwood shrublands and woodlands;
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09.033 RP001 Final V4 (22-10-2009)
4.5
•
SCP25 –Southern Eucalyptus gomphocephala – Agonis flexuosa woodlands
and;
•
SCP26a – Melaleuca huegelii – Melaleuca acerosa (systena) shurblands on
limestone ridges.
DATABASE SEARCH
A database search of the area resulted in two Declared Rare and 13 Priority
Flora species being identified as potentially occurring in the site and within
approximately 11 kilometres surrounding the site. For a list of species found
during the database search, please refer to Appendix B.
There are no known occurrences of Threatened/ Priority Ecological Communities
recorded within the 11 kilometre radius according to the database search. There
are, however, three PECs known to occur within a 14 km radius of the site, DP22
(Priority 2), SCP 21c (Priority 3) and SCP 24 (Priority 3).
4.6
FIELD SURVEY- FLORA
4.6.1
Flora
Nineteen families, 29 genera and 32 taxa (10 native flora taxa and 22 introduced)
were recorded in the survey area.
The plant families most frequently recorded from the survey were as follows:
•
Myrtaceae
six species;
•
Poaceae
six species; and
•
Asteraceae
three species.
Refer to Appendix C for the flora species list.
4.6.2
Protected Flora
No Endangered or Vulnerable species pursuant to the EPBC Act were located
during the survey.
No plant taxa gazetted as Declared Rare pursuant to the WC Act were located in
the survey area.
No Priority Flora species were located in the survey area.
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09.033 RP001 Final V4 (22-10-2009)
4.6.3
Introduced Flora
Twenty-two species of introduced flora were identified during the field survey.
Table 5 summarises these species with their ratings and criteria according to the
Environmental Weed Strategy for Western Australia (refer to Appendix D for the
criteria used for ranking).
Table 5: Weed Species Identified
Criteria
Taxon
Common Name
Rating
Invasiveness
Distribution
Impacts
*Ehrharta calycina
Veld Grass
High
Yes
Yes
Yes
*Eragrostis curvula
African Love Grass
High
Yes
Yes
Yes
*Lagurus ovatus
Hare’s Tail Grass
High
Yes
Yes
Yes
*Pelargonium capitatum
Rose Pelargonium
High
Yes
Yes
Yes
*Typha orientalis
Bullrush
High
Yes
Yes
Yes
*Zantedeschia aethiopica
Arum Lily
High
Yes
Yes
Yes
*Carpobrotus edulis
Hottentot Fig
Moderate
Yes
Yes
-
*Chamaecytisus palmensis
-
Moderate
Yes
Yes
-
*Cynodon dactylon
Couch
Moderate
Yes
Yes
-
*Cyperus congestus
Dense Flat Sedge
Moderate
Yes
Yes
-
*Ficus carica
Fig
Moderate
Yes
-
Yes
*Hypochaeris glabra
Flat Weed
Moderate
Yes
Yes
-
*Sonchus asper
Rough Sowthistle
Moderate
Yes
Yes
-
*Nicotiana glauca
Tree Tobacco
Mild
-
Yes
-
*Phytolacca octandra
Ink Weed
Mild
-
Yes
-
*Trachyandra divaricata
Onion Weed
Mild
-
Yes
-
*Arundo donax
Giant Reed
Low
-
-
-
*Paspalum urvillei
Yassey Grass
Low
-
-
-
*Ricinus communis
Castor Oil Plant
Low
-
-
-
*Avena sp.
-
Not Listed
-
-
-
*Ficus macrophylla
Moreton Bay Fig
Not Listed
-
-
-
*Symphyotrichum squamatum
Bushy Starwort
Not Listed
-
-
-
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09.033 RP001 Final V4 (22-10-2009)
One Declared Plant species was found in the study area:
•
*Arum Lily (Zantedeschia aethiopica) – P1 and P4 for the whole state.
4.7
FIELD SURVEY- VEGETATION
4.7.1
Vegetation
The site consisted of three main vegetation units (see Figure 6):
Community 1
Woodland of Melaleuca preissiana, Eucalyptus rudis
subsp. rudis, Allocasuarina fraseriana, Jacksonia furcellata,
*Ehrharta calycina, *Cynodon dactylon and *Carpobrotus
edulis;
Community 2
Closed Sedgeland of *Typha orientalis and Juncus pallidus
surrounded by a Tall Open Shrubland of Melaleuca
preissiana, Melaleuca rhaphiophylla, *Ficus carica,
*Sonchus asper, *Paspalum urvillei, *Cyperus congestus,
*Cynodon dactylon and Centella asiatica; and
Community 3
Low Open Forest of Eucalyptus rudis subsp. rudis,
*Ehrharta calycina, *Cynodon dactylon and *Carpobrotus
edulis.
During the site survey, a cleared area was also observed, containing weeds and
the locally significant Moreton Bay Fig (*Ficus macrophylla). This area was not
considered a natural vegetation unit and therefore a comprehensive species list
was not produced.
Refer to Appendix E for site photographs.
4.7.2
Vegetation Condition
Most of the site is in Completely Degraded condition. All the natural vegetation
units were considered to range from Degraded to Completely Degraded condition
(Government of Western Australia 2000b):
Community 1
Completely Degraded – presence of weeds, rubbish,
contains few native understorey species, overall low
species richness and diversity, and surrounded by clearing
and/ or roads;
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09.033 RP001 Final V4 (22-10-2009)
Community 2
Degraded- presence of highly aggressive weeds, overall
low species richness, presence of rubbish and is
surrounded by clearing; and
Community 3
Degraded – presence of weeds, is partially cleared by
tracks, contains little or no native understorey species and
has overall low species richness and diversity.
Photo documentation illustrating vegetation condition is presented in Appendix E
and a map showing the vegetation condition is provided in Figure 7. See
Appendix F for the commonly used condition scale in Western Australia.
4.7.3
The Bassendean and Spearwood Dune Systems are recognised as containing
20 Floristic Community Types. Based on the low level of species diversity,
however, insufficient site data exists to correlate with Gibson et al. (1994) Floristic
Communities Types.
Broadly, however, those FCTs that were most unlikely to be represented at the
site were eliminated based on the vegetative and physical characteristics of the
site. This reduces the possible FCTs to resulted in a total of seven of the original
20 potential to be present on the site:
•
SCP4 - Melaleuca preissiana wetlands;
•
SCP5 - Mixed shrub damplands;
•
SCP11 – Wet forests and woodlands;
•
SCP12 - Melaleuca teretifolia and / or Astartea aff. fascicularis shrublands;
•
SCP13 – Deeper wetlands on heavy soils;
•
SCP14 - Deeper wetlands on sandy soils; and
•
SCP17 – Melaleuca rhaphiophylla- Gahnia trifida seasonal wetlands.
None of the above communities are listed as Threatened or Priority Ecological
Communities.
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09.033 RP001 Final V4 (22-10-2009)
5
FAUNA
ENV undertook a level one fauna survey to investigate the habitat within the Site
and gain an understanding of the expected fauna usage of the Site.
5.1
FAUNA SURVEY METHODOLOGY
A Level One fauna survey was carried out in a manner designed to be compliant
with EPA requirements for the environmental surveying and reporting for flora
and vegetation in Western Australia, as set out in the following documents:
•
Terrestrial Biological Surveys as an Element of Biodiversity Protection.
Position Statement No. 3 (EPA 2002); and
•
EPA Guidance for the Assessment of Environmental Factors: Terrestrial
Fauna Surveys for Environmental Impact Assessment in Western Australia
No. 56 (EPA 2004b).
The methodology involved a desktop review and habitat assessment.
5.1.1
Desktop Review
The purpose of the desktop review was to gather background information on the
project area and the fauna that it may support. This involved a search of the
following sources:
•
Western Australian Museum’s (WAM) and (DEC) combined biological
database NatureMap (DEC 2009a);
•
DEC Threatened and Priority Fauna database (DEC 2009b);
•
DEWHA Protected Matters Search Tool (DEWHA 2009), also known as an
EPBC search; and
•
previous fauna surveys (e.g., other consultants reports, DEC reports).
Collectively, these sources were used to compile a list of species that have been
previously recorded in the region (Appendix G). This list will invariably include
many species that do not occur in the project area, because some fauna species
have a limited or patchy distribution, high level of habitat specificity, are locally
extinct or were erroneously identified in previous surveys.
5.1.2
Timing of Survey
ENV undertook the Level One fauna field survey of the site on
2 April 2009. Considering this was a Level One survey (ie. habitat assessment),
the timing of the survey is inconsequential. Eight person-hours were spent
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09.033 RP001 Final V4 (22-10-2009)
traversing the site, surveying for habitat potential, opportunistic fauna sightings
and the potential for trees to contain breeding hollows.
5.1.3
Habitat Assessment
The aim of the habitat assessment was to determine the likelihood of any
conservation significant fauna species utilising the site.
During the field survey, the vegetation communities and landforms present were
used to identify broad fauna habitats. These fauna habitats were assessed for
specific habitat components, to determine their potential to support conservation
significant species.
5.1.4
Opportunistic Searches
At all times during the survey, fauna was opportunistically observed and
recorded. Field staff also investigated scats, tracks, burrows and other traces of
animals throughout the survey.
5.2
VERTEBRATE FAUNA
5.2.1
Fauna Survey Limitations
It is important to note the specific constraints imposed on surveys. Constraints
are often difficult to predict, as is the extent to which they influence survey
outcomes. Survey constraints of the fauna survey are detailed in Table 6.
Table 6: Limitations and Constraints Associated with the Site’s Fauna Survey
Variable
Experience levels
The personnel
who executed this
survey are
practitioners suitably qualified in their appropriate
fields:
•
Ms Natalie Pawley (Environmental Scientist/
Botanist);
Timing, weather,
The fauna survey was undertaken on 2 April 2009.
season.
Considering this was a Level One survey (ie. habitat
assessment),
the
timing
of
the
survey
is
inconsequential.
Scope: sampling
The survey carried out was a Level One survey,
methods/ Intensity
comprising
a
desktop
survey
and
a
habitat
assessment. Considering the size and condition of
the site no further fauna survey effort is necessary.
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09.033 RP001 Final V4 (22-10-2009)
Variable
Sources of information
At the bioregion level, the south-west region has been
relatively well studied.
5.3
FAUNA RESULTS
5.3.1
Vertebrate Fauna Habitat Types
The general habitat of the site was described as comprising silty and sandy soils
(DAFWA 2008) supporting three habitat types: Melaleuca preissiana - Eucalyptus
rudis subsp. rudis woodland, *Typha orientalis – Melaleuca wetland and
Eucalyptus rudis subsp. rudis – weed Forest. Photographs of habitat types are
included in Appendix E.
Habitat 1
Melaleuca preissiana - Eucalyptus rudis subsp. rudis woodland.
This habitat type is a small habitat area located to the south of the site, bound by
North Lake Road, Progress Drive and Bibra Drive. The understorey is sparse and
there is significant weed invasion. However, across this woodland are areas of
loose light grey sand and fallen logs, suitable for burrowing reptiles, and a few
small mammals. Feral bees were observed to occupy at least one of the trees in
this habitat. This habitat area is completely degraded and of low habitat value.
Habitat 2
*Typha orientalis – Melaleuca wetland. This habitat type is a very
small ephemeral wetland (Tappers Lake) located to the north-east of the site,
adjacent to North Lake Road. The centre of this area supports a stand of sedge
species, *Typha orientalis and Juncus pallidus, surrounded by weeds and
isolated fringing vegetation. This habitat is degraded and of low habitat value.
Habitat 3
Eucalyptus rudis subsp. rudis – weed Forest. This habitat type is
located to the north of the site and is in degraded condition. The area typically
consists of a number of immature and few mature trees (E. rudis) with few
understorey species. Weed invasion is restricted to the edges of this habitat area
and recently used tracks, expose areas of loose grey sand, suitable for burrowing
fauna. This area was considered to be of low habitat value.
5.3.2
Connectivity and Ecological Linkages
Fauna corridors and habitat linkages are important to allow animals to move
between areas of resource availability and assisting in maintaining genetic
diversity through connection of gene pools, enabling recolonisation of disturbed
areas and provision of habitat. Where continuous bushland areas can not be
maintained a connection can still be maintained through ‘stepping stones’,
primarily of important to highly mobile species such as birds.
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09.033 RP001 Final V4 (22-10-2009)
The site is part of the Beeliar Regional Park, which is considered to be an
important ecological linkage for the movement of a variety of fauna to regional
parks and wetlands, connecting South Swamp in the south west and Bibra Lake
in the north east. The site is mostly cleared and has major roads and other
infrastructure surrounding it, which limits the potential of the site as an ecological
linkage for ground fauna. Long-necked Turtles (Chelodina oblonga) and frogs
may move across the site (particularly at night and after rain), and would be at
risk of road mortality.
5.3.3
Fauna Species Previously Recorded in the Region
The desktop review revealed that 21 mammals, 164 birds, 33 reptiles, 10
amphibian and three insect species have been recorded in the region.
Fauna species observed on the site included the Australian Raven, Australian
Magpie, Black-faced Cuckoo-shrike and Galah. Other birds likely to use the site
include the Magpie Lark, Willie Wagtail, Singing Honeyeater and Brown
Honeyeater.
Water birds are likely to fly over the site or occasionally rest or forage on the site.
A Pelican was observed on the site, and waterbirds likely to occur include Ibis,
Herons, Ducks, and the Black Swan.
Considering the poor quality of fauna habitat on the site, few species of ground
dwelling fauna are expected to occur on the site on a permanent basis. Small
common skinks, snakes such as the Tiger Snake and exotic mammals such as
the House Mouse or European Rabbit are likely to occur on the site.
5.3.4
Conservation Significant Fauna
Stratagen (2009) identified the following species that are conservation significant
and are likely or known to occur in the Bibra Lake area:
•
Quenda (Isoodon obsulus fusciventer)
•
Water Rat (Hydromys chrsysogaster)
•
Carnaby’s Cockatoo (Calyptorhynchus latirostris)
•
Lined Skink (Lerista lineata)
•
Black-striped Snake (Neelaps calonotos)
•
Western False Pipistrelle (Falsistrellus mackenzei)
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09.033 RP001 Final V4 (22-10-2009)
Considering the site is primarily cleared, and the native vegetation remaining is
very poor, the Quenda, Water Rat, Lined Skink and Black-striped Snake are very
unlikely to occur on the site, even on an occasional basis.
Carnaby’s Cockatoos are likely to pass through the area, and they have been
sighted in the area of Bibra Lake. The site lacks potential food plants for
Carnaby’s Cockatoo (such as Banksia), and lacks large trees (for roosting or
breeding) so this species is not expected to utilise the site.
The Western False Pipistrelle may occasionally forage over the site, but
considering the condition of the vegetation present, it is not expected to roost in
any trees on the site. Therefore any habitat disturbance or clearing will not have
any effect on this species.
Three species of conservation significant invertebrate fauna were previously
recorded in the region:
•
a species of Cricket (Throscodectes xiphos)
•
Graceful Sun Moth (Synemon gratiosa)
•
a species of Bee (Leioproctus contrarius)
Given that the site is primarily cleared, and remaining native vegetation
remaining is very poor, it is extremely unlikely any of these invertebrate species
occur on the site.
5.4
MOSQUITO AND MIDGES
Dense swarms of midges (insect family Chironomidae) are common around Bibra
Lake and other parts of the City of Cockburn in summer (City of Cockburn
2009a). Midges are often a nuisance in residential areas near wetlands because
they are attracted to lights and can pass through some flyscreens (City of
Cockburn 2009a). Nuisance midges are generally found in large numbers in
disturbed wetlands with elevated nutrient levels (City of Cockburn 2009a).
Midges at the site are likely to come from both Bibra Lake and South Lake and
based on the proximity to both lakes, may be a serious nuisance.
Midge numbers have reduced around Bibra Lake since 2002, correlating with
increased seasonal drying of the lake and fewer algal blooms (Stratagen 2009).
Refilling of the Lakes, in wetter than average winters, could produce flushes of
midges (Stratagen 2009).
Mosquitoes are likely to be a problem in the area, with the level of mosquito
activity fluctuating form year to year. On the site, Tappers Lake could potentially
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09.033 RP001 Final V4 (22-10-2009)
harbour mosquitoes temporarily after heavy rain, when it is likely to have
standing water.
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09.033 RP001 Final V4 (22-10-2009)
6
WETLANDS
6.1
WETLANDS OF SIGNIFICANCE ON SITE
The Site is within the eastern chain of the Beeliar Wetlands which extend from
Blue Gum Lake in the north to the Spectacles in the south. There are two
wetlands mapped on site according the Swan Coastal Plain Geomorphic Wetland
dataset. Tappers Lake is located on the southern boundary of the site adjacent to
North Lake Road (Figure 8) and is identified by UFI 6604 in the Geomorphic
Wetlands database.
Tappers Lake is classified as a sumpland with a
management category of resource enhancement. Tappers Lake is connected to
South Lake by a multiple use wetland (UFI 6603) that is also a sumpland.
The Site is located between Bibra Lake and South Lake which are both evaluated
as resource enhancement wetlands. These lakes are also identified as
Environment Protection Policy (EPP) Lakes.
Table 7: Wetlands and Their Classification on Site
Management Category
Unique Feature Identifier
Classification
Number
6.2
REW
6604
Sumpland
MUW
6603
Sumpland
GEOMORPHIC WETLANDS OF THE SWAN COASTAL PLAIN
The Geomorphic Wetlands Swan Coastal Plain Database maps wetlands and
then classifies them as to geomorphic type and period of inundation (e.g. lake,
sumpland, dampland, palusplain) and provides a management category with
related objectives. There are three wetland management categories,
Conservation Category Wetlands (‘CCWs’), Resource Enhancement Wetlands
(‘REWs’) and Multiple Use Wetlands (‘MUWs’). The Management objectives for
REW and MUW wetlands which are found on site are described in the following
table:
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09.033 RP001 Final V4 (22-10-2009)
Table 8: Wetland Management Categories and Objectives
Management
General Description
Buffer
Management Objectives
Resource
Wetlands which may
50-100 m,
Priority wetlands. The ultimate objective is
Enhancement
have been partially
normally 50 m
to manage, restore and protect towards
Category
modified
support
ecological
still
improving their conservation value. These
substantial
but
wetlands have the potential to be restored
attributes
to conservation category. This can be
and functions.
achieved by restoring wetland function,
structure and biodiversity. Protection is
recommended
through
a
number
of
mechanisms. The EPA urges that all
reasonable
measures
be
taken
to
minimise the potential impacts on REWs
and their buffers.
Multiple Use
Wetlands
with
few
remaining
important
attributes
and
30 m where
Use,
conservation
should be considered in the context of
areas identified
ecologically sustainable development and
functions.
best
development
management
and
management
practice
catchment
planning through landcare. The EPA urges
that all reasonable measures be taken to
retain the wetland’s hydrological functions
(including onsite water infiltration and flood
detention) and
where
possible, other
wetland functions.
6.3
WETLAND BUFFERS
The wetland buffer is the designated area adjoining a wetland that is managed to
protect the wetland’s ecosystem health. Buffering provides an important tool in
achieving and maintaining the desired values, processes, functions and attributes
of wetlands. It involves separating a wetland from the adjacent land use(s) that
might threaten its desired values and ensuring wetland activities do not have
undue impact on the land use(s), either through spatial separation or through the
use of physical barriers (WAPC 2005).
It is generally accepted that wetlands of resource enhancement significance
which are to be retained in an urban development context require a buffer of 50100m from the wetlands established outer boundary. The extent of the buffer
around a particular wetland should be based on an assessment of:
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09.033 RP001 Final V4 (22-10-2009)
6.4
•
the wetland’s values;
•
the activities, land uses or development near the wetland, existing and
proposed; and
•
threats posed by the adjacent activities, land uses or development.
SUMMARY
The Tappers Lake (UFI 6604) area was found by the vegetation survey to be in a
degraded condition which is would be more reflective of a multiple use wetland.
Revegetation and protection through the use of buffers of the Tappers Lake area
would improve its conservation values.
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09.033 RP001 Final V4 (22-10-2009)
7
PROPOSED SUBDIVISION
The City of Cockburn proposes to subdivide the Site into 4 lots. Three lots will be
used for Private Recreation with the other lot being reserved for Conservation
and Recreation (Figure 9).
The proposed development of the Site is largely unconfirmed at this stage as it is
the intention of the City to sell or lease three lots for private recreation purposes
after subdivision and retaining the fourth lot in their ownership for conservation
purposes.
The City has considered a number of proposed concept designs for the site
based on Expressions of Interest that were submitted for lease/purchase of the
Site and has selected a preferred option for future development as shown in
Figure 9. The proposed concept design shows a number of possible private
recreation uses including the development of an additional car parking facility for
the neighbouring Adventure World Centre, an Ice Arena and a swimming facility.
It is proposed that the focus of the remaining lot will be used for conservation
purposes. The City wishes to restore and rehabilitate Tappers Lake and the
southern corner of the site to provide an ecological link between Bibra Lake and
South Lake.
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09.033 RP001 Final V4 (22-10-2009)
8
CONSTRAINTS AND OPPORTUNITIES
8.1
ACID SULPHATE SOILS
The desktop assessment and site inspection indicate that ASS are present on the
site.
The future design of the subdivision must consider the presence of ASS through
the layout, design and should minimise the extent of the impacts given the
proximity to significant water bodies.
An ASS investigation must be prepared and reported to the Department of
Environment and Conservation (DEC) prior to commencement of earth works
and dewatering operations that is consistent with the DEC’s guidelines on the
investigation and identification of acid sulphate soils (DOE, 2006)
8.2
HYDROLOGY
8.2.1
Groundwater
The Site is located between two significant local Lakes which have had
significant study done on their seasonal levels and water quality.
The
groundwater levels within the site are largely a function of the levels within the
lakes to either side with groundwater flowing in a westerly direction from Bibra
Lake to South Lake.
The depth to AAMGL varies across the site from being at surface within the
Tappers Lake area with up to 3m separation on the eastern side near the
intersection of Bibra Drive and North Lake Road. The low lying areas within the
site will require some imported fill to achieve 1.2m of separation between AAMGL
and minimum habitable floor levels according to City of Cockburn Engineering
requirements. Where the AAMGL is at surface in Tappers Lake the area is
proposed to remain a conservation area with no importation of fill.
The estimated AAMGL was calculated at the end of summer coinciding annual
minimum groundwater levels and a maximum correction applied.
It is
recommended that groundwater monitoring be undertaken through the winter
period to establish representative maximum groundwater levels throughout the
site.
Groundwater was tested for nutrients and physical parameters on a single
monitoring occasion. Nutrient levels were generally found to exceed SCCP
guideline values across the site. The Bibra Lake LREP identifies Bibra Lake
being classified as a nutrient enriched or hypertrophic and having high
concentrations of phosphorus. As groundwater from the site flows away from
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09.033 RP001 Final V4 (22-10-2009)
Bibra Lake nutrient concentrations within the site are a result of a large upstream
catchment. Nutrient monitoring in South Lake has not been undertaken by the
DoW.
ENV recommends post development monitoring of nutrients and physical
parameters post development on the groundwater up gradient and downgradient
parts of the site to monitor any potential impacts of the development.
Historical landuses within the Bibra Lake area include a large number of landfill
sites which may have impacted on the groundwater quality. Currently, Golder
and Associates are undertaking a contaminated sites investigation to determine
groundwater quality around the lake, the expected completion date of this study
is early 2010.
Due to potential local contamination issues no groundwater can be used on the
subject land until there is confirmation that it is suitable for such use. If it is found
that groundwater is not suitable for use, then it will not be permitted to be used
for any purpose including irrigation, due to the close proximity of sensitive
receiving environments.
8.2.2
Surface Water
The site receives no surface water flow from external catchments and there are
no clear drainage outlet points from the site. The controlled water level in Bibra
Lake is 15 mAHD (James Wegner, Water Corporation, pers comm.).
Post-development surface water should be contained on site with management
of nutrients achieved through water sensitive urban design (as described in
Section 9.1)
The City of Cockburn is currently in the process of upgrading North Lake Road
from single carriageway to dual carriageway. As part of this upgrade, a shallow
drainage swale will be constructed near the intersection of Bibra Drive and North
Lake Road. This swale will be located outside the Site boundary and should not
impact the surface water or groundwater hydrology of the Site.
8.3
FLORA AND VEGETATION
8.3.1
Threatened, Declared and Priority Rare Flora
Despite there being records of two Declared Rare and 13 Priority Flora species
known from the area, no flora species of conservation significance were located
during the time of survey. This may be due to the survey having being conducted
out of spring, however, due to the degraded condition of the site, it is unlikely that
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09.033 RP001 Final V4 (22-10-2009)
any Declared Rare or priority flora would be found on the site in subsequent
surveys.
8.3.2
Weeds
Twenty-two weed species were identified during the survey. One of the weed
species, *Zantedeschia aethiopica (Arum lily), located during the field survey is
listed as Declared Plant species by the Agriculture Protection Board. Arum Lily is
categorised as P1 and P4 for the whole state. Typha orientalis has also been
identified in the Bibra Lake LREP as a problematic weed affecting the area.
Current weed management undertaken by the City of Cockburn according to the
Bibra Lake LREP is performed as part of the annual environmental works
program. The management of Typha orientalis is undertaken through the
Cockburn Wetlands Centre through a 2 year program of herbicide application
and revegetation with dense native plantings. The City of Cockburn undertakes
a Typha orientalis control program on the southern end of Bibra Lake using
chemical and manual methods, and using a helicopter to disperse herbicide.
The Agriculture and Related Resources Protection Act 1976 (WA) stipulates that
the infested area must be managed in such a way that prevents the spread of
seed or plant parts within and from the property. ENV suggests that the City of
Cockburn may wish to adopt weed management that specifically targets the
Zantedeschia aethiopica and Typha orientalis, in addition to the other 21 weeds
identified during the time of survey.
8.3.3
Vegetation Condition
Disturbance within the site is relatively high because of historical clearing (almost
80%), associated weed invasion and rubbish dumping, even though most of the
site is fenced off from the public. In addition, the vegetation structure is largely
fragmented and was therefore considered to range from Degraded to Completely
Degraded condition.
Areas proposed to be retained as part of development of the site would need
extensive rehabilitation work to become ecologically functional and achieve a
continuous vegetation link between Bibra Lake and South Lake.
8.3.4
Based on the degraded condition of the site, by evidence of low species richness
and diversity, insufficient site data exists to correlate with Gibson et al. (1994)
Swan Coastal Plain Floristic Communities Types. ENV was therefore unable to
determine whether any TECs or PECs were present on site.
ENV did, however, eliminate those unlikely to be represented at the site. This
resulted in seven likely FCTs - SCP4, 5, 11, 12, 13, 14 and 17, none of which
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09.033 RP001 Final V4 (22-10-2009)
are listed as Threatened or Priority Ecological Communities and therefore will
not pose a constraint to subdivision.
8.3.5
Locally Significant Species
Within the site three Moreton Bay Fig Trees (Ficus macrophylla ) were located.
These trees are not native or naturally occurring but are significant to the local
European history of the area as they were planted by the Tappers Family who
were among the first to settle on the land. The City of Cockburn has indicated
that they would like to maintain these trees on Site in recognition of the early
settlers of the area.
8.3.6
Spring Survey
A spring survey is recommended over the degraded areas of the site to
determine if declared rare and priority flora may occur in the future conservation
zoned area. Spring survey may help provide improved management of the site
through identification of vegetation that should be protected and enhanced as
part of revegetation efforts discussed in Section 10.3.
Spring survey is not recommended over the remainder of the site because its
completely degraded condition makes it unlikely that any significant flora will be
encountered.
8.4
FAUNA
The fauna habitat present within the site is not considered to be of conservation
value as it is in Degraded to Completely Degraded condition and provides little
habitat value to a limited diversity of fauna.
No conservation-significant fauna are likely to occur on a regular basis, and none
are expected to rely on the site to any significant extent. The only conservation
significant species likely to occur on the site is the Western False Pipistrelle. This
species is not expected to forage regularly because the habitat on the site is
poor, and there are no potential roosting trees that could be utilised by the
species.
As such the proposed development is highly unlikely to have any impact upon
conservation significant fauna or their habitat. There is, however, some potential
for the site to provide a movement corridor for common fauna species such as
Long-necked Turtles and Frogs.
8.5
WETLANDS
The resource enhancement wetland (Tappers Lake) within the site is of degraded
condition and has an infestation of weed species.
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09.033 RP001 Final V4 (22-10-2009)
Currently, North Lake Road is within 25m of Tappers Lake and infringing on the
recommended 50m buffer zone. Some areas of the proposed subdivision are
also within the 50m buffer zone of Tappers Lake.
Wetland vegetation is in a degraded condition with vegetation within the
proposed buffer area being in a completely degraded condition. The degraded
quality of wetland vegetation present on the site provides an opportunity for
revegetation and enhancement of the Sites’ values.
The Site is greater than 50m from both Bibra Lake and South Lake. No
stormwater runoff should be directed towards Bibra Lake as the catchment of the
Site generally flows towards Tappers Lake.
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09.033 RP001 Final V4 (22-10-2009)
9
MANAGEMENT STRATEGY
9.1
URBAN WATER MANAGEMENT
Future development of the subdivision must be compliant with the design
objectives for water sensitive urban design as specified in the Department of
Water’s Better Urban Water Management (BUWM) document and with the
engineering standards documented by the City of Cockburn.
As the built form of the subdivision not confirmed ENV recommends that an
Urban Water Management Plan (UWMP) be prepared as part of the
Development Application for each site. The future design must be compliant with
objectives stated below.
9.1.1
Objectives
The key objectives for achieving water sensitive urban design are:
1. Reduce the use of potable water;
2. Maintain pre-development annual discharge volumes and peak flows postdevelopment; and
3. Maintain water quality at pre-development levels or if possible, improve water
quality.
9.1.2
Water Conservation
Water conservation objectives for the Site are to not use potable water outside of
buildings. Water use by future private recreation facilities should be guided by
the following management measures:
•
Native plantings or xeriscaping on garden beds
•
Minimise turfed areas
•
Use of groundwater bores for irrigation purposes
•
Use of water efficient fixtures
Opportunities for the use of rainwater, greywater, and wastewater as a substitute
for scheme water should be presented in a UWMP.
9.1.3
Water Quantity Management
BUWM (DoW, 2008) states that water quantity management objectives are to be
achieved through maintenance of post development annual discharge volumes to
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09.033 RP001 Final V4 (22-10-2009)
pre-development conditions. This principle is required in terms of environmental
protection and flood management post development.
Future development on the site is required by the City of Cockburn engineering
department to retain and infiltrate the 1 in 10 year Average Recurrence Interval
(ARI) on site. This exceeds the general requirements of the Department of Water
in terms of volume of water infiltrated.
Future development on the Site will also require that catchment runoff for the 1 in
100 year ARI storm is retained to pre-development discharge rates. The future
development will not have and associated impervious road network but will
introduce paved car park areas and increased roof area. The use of infiltration
trenches, pervious pavements and distributed soakwells is recommended and
should maximise infiltration within the development. Overflow from any storage
areas should be conveyed through the use of vegetated swales towards Tappers
Lake.
Groundwater management should be achieved through providing adequate
separation between finished lot levels and the estimated AAMGL. Engineering
guidelines from the City of Cockburn (2009) require a minimum separation of
1.2m between AAMGL and minimum habitable floor levels.
Specific water quantities including volumes, peak water levels and peak
discharge are dependent on the built form of the subdivision and should be
included in a UWMP.
9.1.4
Water Quality Management
Water quality management objectives for the site are to maintain predevelopment concentrations of nutrients post-development. The Stormwater
Management Manual for Western Australia (DoW, 2007) provides the best
management practices used in Western Australia to achieve effective
management of stormwater in the developed environment.
Treatment of stormwater for water quality can be achieved through the use of
both non-structural and structural controls. The stormwater quality management
recommendations presented in this report are selected based on information
provided in the Stormwater Management Manual of WA (DoW, 2007)
Below details the types of treatments that should be undertaken to improve the
quality of stormwater in terms of both structural and non-structural controls.
Stormwater Treatment: Non-Structural Controls
Non-structural controls are pollution-prevention practices designed to prevent or
minimise pollutants from entering stormwater run-off and do no involve fixed,
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09.033 RP001 Final V4 (22-10-2009)
permanent facilities but on changing behaviour. The non-structural controls
recommended below consider that the future development will be for private
recreation and that maintenance practices will be the primary focus.
Future private recreation areas will be required to:
•
Undertake fortnightly street-sweeping of carparks
•
Maintain the stormwater drainage network including inspection, cleaning and
repair of any drains, pits, pipes, storage areas, and outfall structures
•
Undertake manual collection of gross pollutants (litter) to prevent their entry
into nearby wetlands and lakes.
•
Provision and maintenance of adequate litter bins in convenient locations for
patrons.
•
Maintain carpark surfaces to remove accumulated pollutants and ensure
constructed aggregates are intact.
•
Maximise the use of water conserving elements and techniques such as
using mulches, ground covers, and native plants to reduce turfed areas.
•
Refer to Environmental Guidelines for the Establishment and Maintenance of
Turf and Grassed Areas (DEP & WRC, 2001) to determine fertilisation
requirements.
•
Minimise the use of phosphorus fertilisers
Stormwater Treatment: Structural Controls
Structural controls are permanent, engineered devices implemented to control,
treat, or prevent stormwater pollution (DoW, 2007). As mentioned above, use of
structural controls such as infiltration trenches, soakwells, permeable pavements
and vegetated swales for water quantity management are also effective structural
controls for treating stormwater quality. These types of structural controls
promote infiltration, reduce stormwater runoff peak flow, velocity, volume, and
remove coarse/medium sediments and coarse metals.
The use of vegetated swales should reduce concentrations of pollutants entering
the natural environment from stormwater.
The following expected pollutant
removal for vegetated swales are:
•
>90% removal of litter;
•
60-80% removal of total suspended solids;
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09.033 RP001 Final V4 (22-10-2009)
•
25-45% removal of total nitrogen; and
•
30-50% removal of total phosphorus
Specific stormwater management measures are dependant on the built form of the
proposed subdivision and should be identified as part of a UWMP. Locations and
mapped details of structural and non structural controls that should be included as
part of a UWMP.
9.2
WETLANDS
Wetland areas within the site are to be managed to protect their functioning and
their conservation values.
9.2.1
Objectives
The following objectives are proposed for wetland management
1. Protect and enhance native wetland vegetation and wetland buffers;
2. Maintain hydrological regime of wetland; and
3. Provide community appreciation and education opportunities.
9.2.2
Vegetation and Flora
Currently, the vegetation within Tappers Lake is degraded and has significant
weed species within it. Section 10.3 details the rehabilitation and revegetation
efforts to be undertaken within the wetland and the wetland buffer area.
9.2.3
Hydrology
The hydrological regime of the wetland is proposed to be protected by the
implementation of water sensitive urban design measures across the Site as
detailed in Section 9.1 to provide management of water quality and water
quantity post development.
9.2.4
Wetland Buffers
Wetland buffers for resource enhancement wetlands are generally between 50m
and 100m. The proposed subdivision has a variable buffer around the wetland
area ranging from approximately 25m to 50m as shown in Figure 11. In addition
to the distance separation provided by a buffer, physical barriers are proposed to
conserve and protect the wetland.
As mentioned, North Lake Road and its proposed second carriageway are within
25m of the Tappers Lake boundary and within multiple use wetland UFI 6603. In
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09.033 RP001 Final V4 (22-10-2009)
comparison, the buffer widths on the southern and western side of Bibra Lake are
approximately 25m, with developments such as Adventure World (which is
immediately north of the Site) within 50m.
As mentioned above, the wetland is in a degraded condition with the wetland
buffer area being in a completely degraded condition. The buffer area is
predominantly cleared with little wetland vegetation present.
The proposed buffer width varies in relation to the 15 mAHD topographic contour
line around the wetland (Figure 11). Tappers Lake is a sumpland characterised
by a low lying basin landform at approximately 14 mAHD, groundwater levels in
this area are expected to reach a seasonal maximum of approximately 14.3
mAHD through this area. The separation to groundwater at the perimeter of the
proposed wetland buffer is approximately 0.7m which provides significant
clearance to not alter the groundwater regime of the wetland.
As shown in Figure 11, the wetland buffer deviates from the 15mAHD contour
alongside the proposed lot 3 boundary and follows the lot boundary at this point.
Limiting the width of the buffer along this edge is reasonable in the context that
the City of Cockburn will be rehabilitating and revegetating an area far greater
than that buffer area which will contribute to the wetlands health. It is considered
to be an effective and efficient management outcome for the wetland buffer to be
minimised considering the extended rehabilitation works with an overall net
benefit to the Site. Physical barriers can also be used to effectively protect the
wetland as described below.
Rehabilitation and revegetation of Tappers Lake is proposed by the City of
Cockburn and is detailed in Section 10.3 below. As part of this project,
management controls are proposed to protect and enhance the values of the
wetland in addition to the separation created by the proposed buffers. The
following management controls are recommended:
•
Fencing- Fencing is an important management tool to prevent trampling of
wetland vegetation and to limit human activities to appropriate areas (Water
and Rivers Commission, 2000). Fauna friendly fencing should be installed
around the perimeter of the wetland (Shown in Figure 12). The style of
fencing should be consistent with the Landscaping guidelines present in the
Bibra Lake LREP. This fencing should be of Type C- timber fencing with steel
cabling according the landscape style manual consistent with that presented
in the Bibra Lake Landscaping Style Manual.
•
Paths- Pedestrian pathways can be useful to minimise disturbance of
wetland buffer zones by leading people to specific areas (Water and Rivers
Commission, 2000). Paths also provide hard edges to limit the spread of
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09.033 RP001 Final V4 (22-10-2009)
seeds and minimise encroachment of weeds (Department of Environment,
2005).
9.2.5
Community Use and Appreciation
The greater Bibra Lake area is already recognised as a recreation and
conservation asset within the City of Cockburn. The area attracts a large number
of visitors and contains a variety of recreation infrastructure including turfed
areas, children’s play areas, BBQs, toilet facilities, multiple use pathways and
visitor education centre (Stratagen, 2009).
The proposed plan shows a potential multiple use path near the borders of
Tappers Lake connecting from Progress Drive, this pathway is subject to future
investigation. By giving visitors an opportunity to access areas of interest along a
managed and durable access path, the likelihood of people making their own
tracks is reduced (Newsome et al, 2002). The potential dual use path will be
located around the edge of the wetland buffer. Upon further investigation the
potential construction of the pathway should be consistent with landscaping
guidelines within the Bibra Lake Landscaping Style Manual (Plan E, 2008). As
mentioned, fencing is recognised as an effective tool in restricting visitors from
entering environmentally sensitive areas (Newsome et al, 2002)
Community appreciation of Tappers Lake should be promoted and managed by
the City of Cockburn in the future. The cultural and environmental significance of
the area should be sign posted for visitors education. In addition, the sign posts
can also reiterate the significance of wetland management initiatives including:
9.3
•
Dogs to be leashed;
•
Beware of snakes; and
•
No access off path.
REVEGETATION AND LANDSCAPE PLAN
In order to improve, protect and conserve the values of the Site rehabilitation and
revegetation is recommended. The area of the site that will undergo revegetation
and rehabilitation is around Tappers Lake and the southern corner of the Site and
is referred to as the Conservation Area on Figure 12.
9.3.1
Objectives
The following key objectives are proposed for maintaining the ecological integrity
of the site:
1. Keep weeds from encroaching on conservation areas;
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09.033 RP001 Final V4 (22-10-2009)
2. Rehabilitate degraded areas;
3. Protect and enhance existing vegetation; and
4. Encourage natural wildlife to the area.
9.3.2
Weeds
Weeds represent a major issue contributing to degradation of native bushland
areas and can severely hamper native vegetation and devastate rehabilitation
efforts if not managed correctly. Vegetation on site is classified as degraded or
completely degraded. These weeds require control to maintain the areas natural
integrity.
In an effort to minimise damage caused to the Western Australian environment
from weeds, Department of Conservation and Land Management was
commissioned by The Natural Heritage Trust Fund to develop an Environmental
Weeds Strategy for Western Australia. The Environmental Weed Strategy
contains criteria for the assessment and ranking of weeds in terms of their
environmental impact on biodiversity. These criteria are as follows:
•
Invasiveness – ability to invade bushland in good to excellent condition or
ability to invade waterways. (Score as yes or no).
•
Distribution – wide current or potential distribution including consideration of
known history of wide spread distribution elsewhere in the world. (Score as
yes or no).
•
Environmental Impacts – ability to change the structure, composition and
function of ecosystems. In particular an ability to form a monoculture in a
vegetation community. (Score as yes or no).
The rating of each weed is determined by the following scoring system:
•
High - a weed species would have to score yes for all three criteria. Rating a
weed species as high would indicate prioritising this weed for control and/or
research i.e. prioritising funding to it.
•
Moderate -a weed species would have to score yes for two of the above
criteria. Rating a weed species as moderate would indicate that control or
research effort should be directed to it if funds are available, however it
should be monitored (possibly a reasonably high level of monitoring).
•
Mild – a weed species scoring one of the criteria. A mild rating would
indicate monitoring of the week and control where appropriate.
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09.033 RP001 Final V4 (22-10-2009)
•
Low – a weed species would score none of the criteria. A low ranking would
mean that this species would require a low level of monitoring.
Plants may be “declared” by the Agriculture Protection Board under the
Agriculture and Related Resources Protection Act, 1979. Declared Plants are
gazetted under 5 categories (P1 – P5), which define the action required. The
category may apply to the whole state, districts, individual properties or even
paddocks. If a plant is declared, all landholders are obliged to control that plant
on their properties. (Department of Agriculture, 2004).
The Declared Weed species Zantedeschia aethiopica (Arum lily) was noted on
the western margin of the wetland. This plant attracts a Priority 1 and Priority 4
listing, therefore it is required that the City of Cockburn control and eradicate this
weed effectively.
9.3.3
Revegetation/ Rehabilitation
Revegetation in native bushland remnants is generally required to:
•
prevent further weeds from invading the bushland core;
•
to provide protective cover to fauna of significance; and
•
to deter visitors from accessing environmentally sensitive areas.
To prevent further degradation on Site (such as increased weed invasion)
revegetation with native and endemic species is necessary. Replanting native
vegetation throughout a buffer strip is a successful management option (Wells,
2002). Revegetating will assist by:
•
preventing weed invasion;
•
deterring people from walking through the wetland, causing damage
generated from tracks (such as erosion and disease dispersal)
•
limit dumped rubbish and pollutants from entering the wetland;
•
offering some shelter from the sight and noise of a busy road; and
•
providing necessary cover for faunal movement.
The following species list details the appropriate species to be used in the
revegetation of the Site. Figure 12 shows where these species are proposed to
be planted. Please note that boundaries between wetland areas and fringing
wetland areas are conceptual only and subject to a detailed rehabilitation and
revegetation plan.
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09.033 RP001 Final V4 (22-10-2009)
Table 9: Recommended Species to Use in Rehabilitation
Species
Tappers Lake
Baumea articulata
x
Dielsia stenostachya
x
Juncus pallidus
x
Lepidosperma longitudinale
x
Melaleuca rhaphiophylla
x
Melaleuca preissiana
x
Melaleuca lateritia
x
Fringing
Astartea scoparia
x
Eucalyptus rudis
x
Kunzea glabrescens
x
Hypocalymma angustifolium
x
Taxandria linearifolius
x
Eucalyptus marginata
x
The fringing species listed above would be suitable for use in the landscaping of
the future private recreation and would provide continuity within the area.
The species listed above would also be suitable for vegetation of the drainage
swale associated with North Lake Road that is proposed near its intersection of
Bibra Drive. Sedge species such as Juncus pallidus and Lepidosperma
longitudinale would assist in stripping nutrients from stormwater before it
infiltrates into the groundwater system.
ENV recommends that a revegetation and rehabilitation management plan be
developed to coordinate the eradication of weed species and revegetation of
significant plantings.
9.3.4
Car Park Landscaping
Two car parking areas are proposed in the development of the Site. General
landscaping guidelines including pavements for pedestrian pathways, benches
and street lighting are contained within the Bibra Lake Style Manual (Plan E,
2008).
Suggestions are also made in the Style Manual regarding garden beds and
plantings within the Bibra Lake Area. It is recommended that car parks within the
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09.033 RP001 Final V4 (22-10-2009)
Site adopt low feature planting to maintain visibility. These plantings will also
provide a natural barrier to pedestrians from entering the revegetation areas.
The suggested plantings from the Style Guide are as follows (Plan E, 2008):
•
Acacia saligna
•
Macrozamia riedlei
•
Anigozanthos humilis
•
Kennedia prostrata
•
Patersonia occidentalis
•
Eremaea pauciflora
•
Jacksonia furcellata
•
Pimelea rosea
•
Rhagodia baccata ssp baccata
To facilitate the movement of fauna in particular tortoise car parks should avoid
using box (or barrier) kerbing where possible. Alternatively, box kerbing can be
used in areas to discourage fauna movement or dissuade fauna passage.
9.4
FAUNA MANAGEMENT
9.4.1
Native Fauna
Currently, the generally degraded condition of the Site provides very poor habitat
for locally occurring fauna. Following revegetation and rehabilitation it is
anticipated that some fauna species may return and the site may be used as an
ecological link between Bibra Lake and South Lake.
The following objectives are proposed to manage fauna onsite:
1. Create wildlife linkages through the development area that connect with
external areas of vegetation; and
2. Encourage natural wildlife to the area.
Revegetation of the Site (as discussed in Section 10.3) will provide vegetation
cover, to encourage fauna to the site which will increase the value of the site as
an ecological link between Bibra Lake and South Lake. Plantings to create areas
of dense vegetation clusters will provide cover for resident and mobile animals.
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09.033 RP001 Final V4 (22-10-2009)
Native local flora should be used in revegetation. In particular, flowering plants
such as Eucalyptus are recommended, as these are most likely to attract native
birds (including Carnaby’s Cockatoo).
The use of nesting boxes within the Site is limited because there are no
appropriately sized trees present. These may be considered in the future once
trees planted as part of revegetation reach maturity.
As part of the upgrade of North Lake Road there is provision for fauna
underpasses, the underpasses will be located at two locations and will consist of
three 300mm diameter pipes (Figure 12). This will provide the opportunity for
ground fauna to move between Bibra Lake and South Lake, and reduce the risk
of them being killed by traffic. Fauna underpasses should be placed adjacent to
existing or revegetated native vegetation or adjacent to Tappers Lake, as this is
the most likely place that fauna will cross North Lake Road.
In addition, any future upgrades to Progress Drive should consider the installation
of additional fauna underpasses to create a linkage between Bibra Lake and
Tappers Lake. These additional underpasses would assist to create an
ecological linkage from Bibra Lake through to South Lake.
9.4.2
Midges and Mosquitoes
To manage midges and mosquitoes it is recommended that:
1. Tappers Lake should be revegetated (as described in section 9.2) to act as a
buffer zone for this potential source of mosquitoes; and
2. Fertiliser and sources of nutrients such as detergents be minimised (as
discussed in section 9.1) to contribute to the improvement of the overall
health of the Lakes in the area (including Tappers Lake);
3. Buildings should use fine-meshed flyscreen to prevent midges entering
buildings.
Outdoor lighting on any buildings, car parks or recreational areas should be
designed to not attract midges. It is recommended that:
1. Outdoor lighting should be minimised, and not placed near the entrances of
buildings;
2. Hedges, shrubs and light shades should be use to shade outdoor lighting
from wetlands;
3. Lighting should be or a type that minimises UV light and heat, such as highpressure sodium vapour lamps (City of Cockburn 2009a); and
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09.033 RP001 Final V4 (22-10-2009)
4. Commercial Light Traps be placed around building entrances or public
recreation areas.
9.5
CONSTRUCTION MANAGEMENT
Future construction activities must be mitigated to not have any disturbance on
the locally significant wetlands and waterways.
9.5.1
Objectives
The objectives for construction management include:
1. Minimise disturbance of any construction activities and ongoing operations
9.5.2
Acid Sulphate Soils Management
An Acid Sulphate Soils Management Plan should be prepared consistent with
requirements by the Department of Environment and Conservation to mitigate
any harmful effects by disturbance of acid sulphate soils. This management plan
should address any effects that may be caused through construction activities
including sewer installation, excavation and dewatering.
9.5.3
Dewatering/Dust Suppression
Dewatering and dust suppression may be required based on design and
installation of the sewer in the area.
Any groundwater licenses required for dewatering and dust suppression must be
dealt with separately from this report and based on approval from the Department
of Water.
9.5.4
Fencing
Construction debris and materials should be enclosed to the construction site
through the use of fencing. This will prevent gross pollutants from entering
surrounding waterways and natural areas.
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09.033 RP001 Final V4 (22-10-2009)
10
MANAGEMENT FRAMEWORK
The following management framework is proposed for the implementation of this
management plan. This framework is consistent with that presented in the Bibra
Lake LREP (Stratagen, 2009).
Table 10: Management Plan Recommendations
Recommendation
Application
Implement and maintain
Detailed in Weed and Revegetation
an ongoing terrestrial
Management Plan
Responsibility
City of Cockburn
weed control program
Undertake revegetation
Detailed in Weed and Revegetation
of wetland and southern
Management Plan
City of Cockburn
corner areas
Prepare a Wetland
To determine future management of Tappers
Management Plan
Lake and its buffer area
Prepare an Urban
As part of the Development Application for
Water Management
Private Recreation uses
City of Cockburn
Future Developer
Plan
Ongoing Hydrological
As prescribed in the Urban Water Management
Monitoring
Plan
Install footpath, fencing
According to the Bibra Lake Landscape Style
and interpretive signage
Manual (Plan E, 2008)
Future Developer
City of Cockburn
for visitor
Construction
Mitigate any negative effects of construction
Management
including acid sulphate soils management,
dewatering, dust suppression and waste once
final design is determined.
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09.033 RP001 Final V4 (22-10-2009)
Future Developer
11
REFERENCES
City of Cockburn (2009a) Midge Research and Management Group (online):
http://www.cockburn.wa.gov.au/midges/index.html
City
of
Cockburn
(2009b)
Midge
Control
Strategy
(online):
http://www.cockburn.wa.gov.au/documents/CouncilServices/Environment/MidgeS
trategyUpdatedApril01.doc
Department of Agriculture and Food (2007) List of Declared Plants in Western
Australia under the Agriculture and Related Resources Protection Act 1976.
Agriculture Protection Board, Western Australia.
Department of Conservation and Land Management (1999) Environmental Weed
Strategy for Western Australia.
Department of Conservation and Land Management (CALM), 2006.
Regional Park Management Plan. CALM, WA
Beeliar
Department of Environment (2004) Perth Groundwater Atlas Second Edition.
Department of Environment, Perth.
Department of Environment (2005) Draft Guideline for the Determination of
Wetland Buffer Requirements. Department for Planning and Infrastructure,
December 2005.
Department of Environment, 2006. Draft Identification and Investigation of Acid
Sulfate Soils, Acid Sulfate Soils Branch. Department of Environment, WA.
Department of Environment & Conservation (2009a). NatureMap: Mapping
Western Australia's Biodiversity. Department of Environment and Conservation
and Western Australian Museum. URL: http://naturemap.dec.wa.gov.au/
Department of Environment & Conservation (2009b). Threatened and Priority
Fauna Database search.
Department of Environmental Protection and Waters and Rivers Commission,
2001. Environmental guidelines for the Establishment and Maintenance of Turf
and Grassed Areas, State Government of Western Australia, WA
Department of the Environment, Water, Heritage & the Arts (2009). EPBC Act
Protected
Matters
Search
Tool.
Online:
www.environment.gov.au/erin/ert/epbc/index.html
Department of Water, 2007. Stormwater Management Manual for Western
Australia. Department of Water, WA
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09.033 RP001 Final V4 (22-10-2009)
Department of Planning and Infrastructure (2007) South Metropolitan Region
Scheme acid sulphate soils. Western Australian Planning Commission.
Environmental Protection Authority (2004) Terrestrial Flora and Vegetation
Surveys for Environmental Impact Assessment in Western Australia. Guidance
Statement 51. Environmental Protection Authority, Western Australia.
Environmental Protection Authority (2005) Environmental Guidance for Planning
and Development. Draft Guidance Statement No 33. Environmental Protection
Authority, Western Australia.
Hill, A.L., Semeniuk, C.A., Semeniuk, V., Del Marco, A. (1996) Wetlands of the
Swan Coastal Plain Volume 2B - Wetland Mapping, Classification, and
Evaluation, Wetland Atlas. Water and Rivers Commission, Perth.
Gardiner, T. (2002) Introduction to Mammals of the Perth Jarrah Forests.
Australian Wildlife Conservancy (unpublished)
Geological Survey of Western Australia, 1985. Fremantle Environmental Geology
Series 2033-I and 2033-IV. Geological Survey of WA.
Newsome, D., Moore, S. and Dowling, R. (2002) Natural area Tourism: Ecology,
Impacts and Management. Channel View Publications, Clevendon England.
Plan E, 2008, Bibra Lake Redevelopment Style Manual, 2008
Sports Turf Technology (2004) Irrigation Benchmarking Project Unpublished
Stratagen, 2009, Bibra Lake Landscape, Recreational and Environmental
Management Plan. May, 2009
Water and Rivers Commission, 2000. Water Note 4: Wetland Buffers.
Government of Western Australia. January 2000
Wells, G. (2002) Benchmarking standards and completion criteria. Proceedings
from the Annual Bold Park Research Meeting (unpublished).
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09.033 RP001 Final V4 (22-10-2009)
FIGURES
09.033 RP001 Final V4 (22-10-2009)
Site Boundary
Job No: 09.033
FIGURE 1: Location Plan
Drawn By: SS
Client: City of Cockburn
Checked By: DN
Project: Lots 14 & 22 Progress Dr, Bibra Lake
Scale:1:30,000
Date: 15/5/09
FIGURE 2: Climate
Job No:
09.033
Drawn By: SS
Checked By: DN
Project: Lots 14 and 22 Progress Dr, Bibra Lake
Scale: NTS
Date: 15/5/09
15
16
14
PR
NO
RTH
L
O
G
RE
SS
DR
16
IV
E
AKE
17
18
Legend
Site Boundary
Topography
Job No: 09.033
FIGURE 3: Topography
Drawn By: SS
Checked By: DN
Scale:1:5,000
Date: 15/5/09
Geomorphology
Environmental Geology
BIBRA
LAKE
FIGURE 4: Environmental Geology and
Geomorphology
Job No:
09.033
Checked By: DN
Project: Lots 14 and 22 Progress Dr, Bibra Lake
Scale: NTS
Drawn By: SS
Date: 15/5/09
#
*
@
A
Bibra Lake
MW3
14.379
15.01
.
14
5
@
A
14
.2 5
MW4
14.595
PR
O
75
14.
@
A
existing bore
14.055
NO
RTH
L
AKE
@
A
Legend
G
RE
SS
DR
IV
E
MW2
14.658
Site Boundary
@
A
ENV Groundwater Monitoring Bore
#
*
Surface Water Site
Bore ID
Estimated AAMGL
Estimated AAMGL (mAHD)
@
A
MW1
14.8
South Lake
#
* 14.178
Job No: 09.033
FIGURE 5: Groundwater Levels
Drawn By: SS
Checked By: DN
Scale:1:5,000
Date: 15/5/09
NOT TO SCALE
Site Boundary
Community 1
Community 2
Community 3
NOTE: FOR A FULL DESCRIPTION, SEE TEXT
DRAWN BY: NP
AUTHOR: NP
Cleared Area
09.037-Fig 2
City of Cockburn
LOT 14 & 22 PROGRESS DR, BIBRA LAKE: ENVIRONMENTAL MANAGEMENT PLAN
VEGETATION UNITS
FIGURE 6
Base supplied by:
NOT TO SCALE
Site Boundary
Degraded
Completely Degraded
DRAWN BY: NP
AUTHOR: NP
NOTE: FOR A FULL DESCRIPTION, SEE TEXT
09.037-Fig 3
City of Cockburn
LOT 14 & 22 PROGRESS DR, BIBRA LAKE: ENVIRONMENTAL MANAGEMENT PLAN
VEGETATION CONDITION
FIGURE 7
Base supplied by:
PR
NO
RTH
L
O
G
RE
SS
DR
IV
E
AKE
Legend
SiteBoundary
Geomorphic Wetlands
Management Category
Resource Enhancement
Multiple Use
Job No: 09.033
FIGURE 8: Wetland Mapping
Drawn By: SS
Checked By: DN
Scale:1:5,000
Date: 15/5/09
FIGURE 10: Proposed Landuse
Job No:
09.033
Drawn By: SS
Checked By: DN
Scale: NTS
Date: 15/5/09
25m
14
.25
16
.5
14
14
15
50m
25m
PR
OG
25m
RE
14.7
SS
5
DR
IV
E
Legend
Site Boundary
Conservation Area
NO R
TH
LAK
E
16
RD
Estimated AAMGL (mAHD)
Proposed Wetland Buffer
17
Topography (mAHD)
18
Resource Enhancement
Job No: 09.033
FIGURE 11: Wetland Boundary
Drawn By: SS
Checked By: DN
Scale:1:3,000
Date: 3/7/09
¿
Bibra
Lake
Private
Recreation
Area
Tappers Lake Objectives
1. Encourage Reptile and Amphibian Use
2. Provides a Link between the Lakes
3. Install Fauna Friendly Fencing
4. Eradication of Weed Species
5. Revegetation with Wetland Species
[
k
Tappers
Lake
=
!
Site Boundary
o
!
—
Southern Corner Objectives
1. Attract Native Birds such as
Carnabys Cockatoo
2. Provides a Link between the Lakes
4. Eradication of Weed Species
5. Revegetation with Native Species
[
k
•
Private
Recreation
Area
PR
Proposed Conservation Area
O
G
RE
SS
DR
Wetland Revegetation Area
Fringing Wetland Revegetation Area
16
Fauna Friendly Fencing
NOR
Native Vegetation
Potential Pedestrian Pathway
(subject to further investigation)
=
!
o
!
[
k
Fauna Underpass consists of
3 x 450dia pipes
Interpretive Signage
TH
L
AKE
RD
=
!
17
18
South
Lake
Picnic Bench
Job No: 09.033
FIGURE 12: Landscaping and Revegetation Concept Plan
Drawn By: SS
Checked By: SS
Project: Lots 14 & 22 Progress Drive
Scale:1:3500
Date: 26/6/09
APPENDIX A
LITHOLOGICAL LOGS
09.033 RP001 Final V4 (22-10-2009)
Client:
Logged By:
Drilled By:
Monitoring Bore No:
Depth
BGL
(m)
Sample
Taken
City of Cockburn
ES
DH / SS
MW1
Monitor
Well
Log
Project:
Job No:
Date Logged:
Installation Method:
389064E; 6447677N
Lithology
Profile
0 - 1.5m
Progress Drive
09.035
07-Apr-09
hand augering
Field
Rank
Observations
(PID in ppmv VOC)
SAND, grey, medium grained, poorly sorted, damp
H2S smell at 0.5m bgl
1.0
orangy sanstone observed in
the profile
1.5 - 2.5m
SAND, brown, medium grained, poorly sorted, damp
hard layer of limestone hit
2.0
limestone remains
2.5 - 3m
SAND, grey - brown, medium grained, poorly sorted
damp to wet
3.0
4.0
3 - 3.2m
SAND, white, with orangy compacted sand particles
3.2 - 4m
SAND, dark grey, medium grained, poorly sorted, wet
samples of charcoal - PEAT
end of the hole: 4m bgl by refusal
hole abandonned and not developped
NOTE:
Monitor Well Screen
Gravel Pack
Bentonite Layer
Sand Fill
Cement Grout
Initial water table at time drilling
ENV. Australia
Level 7
182 St Georges Terrace
Perth, WA, 6000.
Client:
Logged By:
Drilled By:
Monitoring Bore No:
Depth
BGL
(m)
Sample
Taken
City of Cockburn
ES
DH / SS
MW2
Monitor
Well
Log
Project:
Job No:
Date Logged:
388844E; 6447757N
Lithology
Profile
0 - 1.2m
SAND, light grey, medium grained, poorly sorted, dry
1.2 - 1.5m
SAND, brown, medium grained, poorly sorted, dry
1.5 - 1.8m
SAND, white - light grey, medium grained, poorly sorted
Progress Drive
09.035
07-Apr-09
hand augering
Field
Rank
Observations
(PID in ppmv VOC)
1.0
white coarse sand particles
damp - red / orangy mottling
1.8 - 2m
orangy mottling
SAND, white, medium grained, moderately sorted
saturated
casing stick up: 0.69m
2.0
end of the hole: 2m bgl
NOTE:
Monitor Well Screen
Gravel Pack
Bentonite Layer
Sand Fill
Cement Grout
ENV. Australia
Level 7
Perth, WA, 6000.
Client:
Logged By:
Drilled By:
Monitoring Bore No:
Depth
BGL
(m)
Sample
Taken
City of Cockburn
ES
DH / SS
MW3
Monitor
Well
Log
Profile
Project:
Job No:
Date Logged:
388559E; 6448058N
Lithology
0 - 1.2m
SAND, grey, medium grained, poorly sorted, dry
1.2 - 2.3m
SAND, white, medium grained, poorly sorted, damp
2.3 - 3m
SAND, grey, medium grained, poorly sorted, damp
Progress Drive
09.035
07-Apr-09
hand augering
Field
Rank
Observations
(PID in ppmv VOC)
1.0
2.0
saturated sand at 2.9m bgl
3.0
NOTE:
Monitor Well Screen
Gravel Pack
Bentonite Layer
Sand Fill
Cement Grout
ENV. Australia
Level 7
Perth, WA, 6000.
Client:
Logged By:
Drilled By:
Monitoring Bore No:
Depth
BGL
(m)
Sample
Taken
City of Cockburn
ES
DH / SS
MW4
Monitor
Well
Log
Profile
Project:
Job No:
Date Logged:
388756E; 6447948N
Lithology
0 - 0.5m
SAND, grey, medium grained, poorly sorted, dry
0.5 - 1.5m
SAND, white, medium grained, poorly sorted, dry
1.5 - 2m
SAND, brown, medium grained, poorly sorted, dry
2 - 3m
SAND, white, medium grained, poorly sorted, damp
Progress Drive
09.035
07-Apr-09
hand augering
Field
Rank
Observations
(PID in ppmv VOC)
1.0
2.0
wet layer at 2.5m bgl
saturated sand at 2.8m bgl
3.0
NOTE:
Monitor Well Screen
Gravel Pack
Bentonite Layer
Sand Fill
Cement Grout
ENV. Australia
Level 7
Perth, WA, 6000.
APPENDIX B
DEC DATABASE SEARCH
RESULTS
09.033 RP001 Final V4 (22-10-2009)
City of Cockburn- Lot 14 & 22 Progress Dr, Bibra Lake: Environmental Management Plan
APPENDIX B
Department of Environment and Conservation Database Search Results
Declared Rare Flora and Priority Flora
Family
Taxa
Conservation
Code:
FEDERAL
Conservati
on Code:
STATE
Amanitacea
Amanita carneiphylla
Not Listed
2
Amanitacea
Amanita griseibrunnea
Not Listed
2
Papilionaceae
Aotus cordifolia
Not Listed
3
Orchidaceae
Caladenia huegelii
Sapindaceae
Dodonaea hackettiana
Orchidaceae
Drakaea elastica
Cyperaceae
Cyathochaeta teretifolia
Not Listed
3
Papilionaceae
Jacksonia gracillima
Not Listed
3
Mimosaceae
Not Listed
1
Byblidaceae
Acacia lasiocarpa var.
bracteolata long peduncle
variant
Byblis gigantea
Not Listed
2
Orchidaceae
Microtis quadrata
Not Listed
4
Restionaceae
Platychorda rivalis
Not Listed
1
Haemodoraceae
Not Listed
3
Stylidiaceae
Phlebocarya pilosissima subsp.
pilosissima
Stylidium longitubum
Not Listed
3
Goodeniaceae
Anthotium junciforme
Not Listed
4
09.033 RP001 Appendix B
Endangered
R
Not Listed
4
Endangered
R
APPENDIX C
FLORA SPECIES LIST
09.033 RP001 Final V4 (22-10-2009)
City of Cockburn- Lot 14 22 Progress Dr, Bibra Lake: Environmental Management Plan
APPENDIX C
FLORA SPECIES LIST
* denotes foreign introduced species
? indicates that this taxa is likely, however, insufficient taxonomic features were
present for full and definitive identification. The question mark is placed before the
item which is uncertain.
Abbreviations:
sp.: species (singular)
var.: variety
spp.: species (plural)
ms: manuscript name (unpublished)
subsp.: subspecies
PRESENCE/ABSENCE
FAMILY
CONS.
CODE Community 1
TAXA
TYPHACEAE
* Typha
orientalis
POACEAE
*
*
*
*
*
*
donax
sp.
dactylon
curvula
ovatus
urvillei
Arundo
Avena
Cynodon
Eragrostis
Lagurus
Paspalum
CYPERACEAE
* Cyperus
congestus
ARACEAE
* Zantedeschia
aethiopica
RESTIONACEAE
* Ehrharta
calycina
Juncus
pallidus
JUNCACEAE
ASPHODELACEAE
CASUARINACEAE
MORACEAE
* Trachyandra
Allocasuarina
+
+
+
Community 2
+
+
+
+
+
+
+
+
+
+
divaricata
+
fraseriana
+
carica
macrophylla
+
PHYTOLACCACEAE
* Phytolacca
octandra
+
AIZOACEAE
* Carpobrotus
edulis
+
+
MIMOSACEAE
Acacia
saligna
+
PAPILIONACEAE
Jacksonia
furcellata
+
GERANIACEAE
* Pelagonium
capitatum
+
EUPHORBIACEAE
* Ricinus
communis
+
MYRTACEAE
* Chamaecytisus
Eucalyptus
Eucalyptus
Kunzea
Melaleuca
Melaleuca
palmensis
rudis subsp. rudis
sp.
ericifolia subsp. ericifolia
preissiana
rhaphiophylla
+
+
+
+
+
Centella
asiatica
+
+
+
+
+
+
SOLANACEAE
* Nicotiana
glauca
+
ASTERACEAE
* Hypochaeris
* Sonchus
* Symphyotrichum
glabra
asper
squamatum
+
09.033 RP001 Appendix C
+
+
* Ficus
* Ficus
APIACEAE
Community 3
+
+
APPENDIX D
ENVIRONMENTAL WEEDS AND
DECLARED PLANT CATEGORIES
09.033 RP001 Final V4 (22-10-2009)
APPENDIX D
ENVIRONMENTAL WEEDS AND DECLARED PLANT CATEGORIES
D1: Criteria used for Ranking Environmental Weeds
The Environmental Weed Strategy for Western Australia (CALM 1999) contains criteria
for the assessment and ranking of weeds in terms of their environmental impact on
biodiversity. These criteria are as follows:
•
Invasiveness – ability to invade bushland in good to excellent condition or ability
to invade waterways. (Score as yes or no).
•
Distribution – wide current or potential distribution including consideration of
known history of wide spread distribution elsewhere in the world. (Score as yes
or no).
•
Environmental Impacts – ability to change the structure, composition and
function of ecosystems. In particular an ability to form a monoculture in a
vegetation community. (Score as yes or no).
The rating of each weed is determined by the following scoring system:
•
High - a weed species would have to score yes for all three criteria. Rating a
weed species as high would indicate prioritising this weed for control and/or
research i.e. prioritising funding to it.
•
Moderate -a weed species would have to score yes for two of the above criteria.
Rating a weed species as moderate would indicate that control or research effort
should be directed to it if funds are available, however it should be monitored
(possibly a reasonably high level of monitoring).
•
Mild – a weed species scoring one of the criteria. A mild rating would indicate
monitoring of the week and control where appropriate.
•
Low – a weed species would score none of the criteria. A low ranking would
mean that this species would require a low level of monitoring.
Source: Department of Conservation and Land Management (1999). Environmental Weed Strategy for Western
Australia. Department of Conservation and Land Management, Perth, Western Australia.
09.033 RP001 Appendix D
D2: Standard Meanings of Declared Plant Categories
P1
Prohibits movement.
The movement of plants or their seeds is prohibited within the State.
This prohibits the movement of contaminated machinery and produce including
livestock and fodder.
P2
Aim is to eradicate infestation.
Treat all plants to destroy and prevent propagation each year until no plants remain.
The infested area must be managed in such a way that prevents the spread of seed or
plant parts on or in livestock, fodder, grain, vehicles and/or machinery.
P3
Aims to control infestation by reducing area and/or density of infestation.
plant parts within and from the property on or in livestock, fodder, grain, vehicles and/or
machinery.
Treat to destroy and prevent seed set all plants:
*
Within 50m inside of the boundaries of the infestation;
*
within 50m of roads and high water mark on waterways;
*
within 50m of sheds, stock yards and houses.
Treatment must be done prior to seed set each year.
Properties with less than 20ha of infestation must treat the entire infestation.
Additional areas may be ordered to be treated.
P4
Aims to prevent infestation spreading beyond existing boundaries of infestation
plant parts within and from the property on or in livestock, fodder, grain, vehicles and/or
machinery.
Treat to destroy and prevent seed set all plants:
*
within 50m inside of the boundaries of the infested property for one-leaf and 20m
for two-leaf;
*
within 50m of roads and high water mark on waterways;
*
within 50m of sheds, stock yards and houses.
Treatment must be done prior to seed set each year. Properties with less than 20ha of
infestation must treat the entire infestation.
Additional areas may be ordered to be treated.
Special considerations.
In the case of P4 infestations where they continue across property boundaries there is
no requirement to treat the relevant part of the property boundaries as long as the
boundaries of the infestation as a whole are treated. There must be agreement
between neighbours in relation to the treatment of these areas.
P5
Aims to control infestations on public lands.
Source: Department of Agriculture and Food (2008). List of Declared Plants. Department of Agriculture and Food,
Western Australia. Online: http://www.agric.wa.gov.au/.
APPENDIX E
SITE PHOTOGRAPHS
09.033 RP001 Final V4 (22-10-2009)
APPENDIX E
SITE PHOTOGRAPHS
Photo 1: Community 1
09.033 RP001 Appendix E
Photo 3: Nest in tree within Community 1
Photo 4: Beehive in dead tree within Community 1
Photo 5: Dead Tree within Community 1
Photo 6: Evidence of bird fauna using trees within Community 1
Photo 7: Logs and debris within Community 1
Photo 8: Community 2 in distance
Photo 9: *Typha orientalis within Community 2
Photo 13: Dilapidated shed within Community 3
Photo 14: Cleared area denude of vegetation
APPENDIX F
BUSH FOREVER CONDITION
SCALE
09.033 RP001 Final V4 (22-10-2009)
APPENDIX F
BUSH FOREVER CONDITION SCALE
Condition Scale
Code
P
E
VG
Condition Scale
Pristine (1)
Pristine or nearly so, no obvious signs of disturbance
Excellent (2)
Vegetation structure intact, disturbance affecting individual
species and weeds are non-aggressive species.
Very Good (3)
Vegetation structure altered, obvious signs of disturbance.
For example, disturbance to vegetation structure caused by
repeated fires, the presence of some more aggressive weeds,
dieback, logging and grazing.
G
Good (4)
Vegetation structure significantly altered by very obvious signs of
multiple disturbance. Retains basic vegetation structure or ability
to regenerate it.
For example, disturbance to vegetation structure caused by very
frequent fires, the presence of some very aggressive weeds at
high density, partial clearing, dieback and grazing.
D
Degraded (5)
Basic vegetation structure severely impacted by disturbance.
Scope for regeneration but not to a state approaching good
condition without intensive management.
For example, disturbance to vegetation structure caused by very
frequent fires, the presence of very aggressive weeds, partial
clearing, dieback and grazing.
CD
Completely Degraded (6)
The structure of the vegetation is no longer intact and the area is
completely or almost completely without native species. These
areas are often described as ‘parkland cleared’ with the flora
comprising weed or crop species with isolated native trees or
shrubs.
Source: Government of Western Australia (2000). Bush Forever Volume 2: Directory of Bush Forever Sites.
Department of Environmental Protection, Perth, Western Australia.
09.033 RP001 Appendix F
APPENDIX G
FAUNA SPECIES EXPECTED AT
THE SITE
09.033 RP001 Final V4 (22-10-2009)
APPENDIX G
Fauna Species Expected within the Site
List excludes exclusively marine species and only conservation significant invertebrates are listed.
Key: Introduced= Introduced Species (exotic or non-local native), EPBC= Environmental Protection and Biodiversity Conservation Act 1999, WC= Wildlife
Conservation Act 1950, DEC= Department of Conservation Priority Code.
For Definitions of Conservation Codes see Appendix A.
A= Fauna of signficance recorded by Strategen (2008), B = DEC Threatened fauna database, WAM search and EPBC Act search), C = The New Atlas of
Asuatralian Birds, D= Species recorded during the survey
Scientific Name
Common Name
MAMMALIA
MAMMALS
Family DASYURIDAE
Antechinus flavipes leucogaster
Yellow-footed Antechinus, Mardo
Dasyurus geoffroii
Western Quoll, Chuditch
Phascogale calura
Red-tailed Phascogale
Introduced
EPBC
Conservation Status
WC
DEC
Local
VU
S1
VU
S1
A
B
X
X
X
√
Family MYRMECOBIIDAE
Myrmecobius fasciatus
Numbat, Walpurti
X
Family PERAMELIDAE
Isoodon obesulus fusciventer
Southern Brown Bandicoot, Quenda
P5
√
X
X
Family MACROPODIDAE
Macropus fuliginosus
Western Grey Kangaroo
Macropus irma
Western Brush Wallaby
Setonix brachyurus
Quokka
P4
VU
S1
√
X
X
X
Family PHALANGERIDAE
Common Brushtail Possum
X
Little Red Flying-fox
X
Chalinolobus gouldii
Gould’s Wattled Bat
Nyctophilus geoffroyi
Lesser Long-eared Bat
X
X
Trichosurus vulpecula vulpecula
Family PTEROPODIDAE
Pteropus scapulatus
Family VESPERTILIONIDAE
09.033 RP001 Appendix G
C
D
APPENDIX G
Scientific Name
Common Name
Vespadelus regulus
Southern Forest Bat
Western False Pipistelle
Falsistrellus mackenziei
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
P3
X
P4
X
B
X
C
Family MURIDAE
Hydromys chrysogaster
Water-rat
Mus musculus
House Mouse
*
Rattus rattus
Black Rat
*
Canis lupus familiaris
Domestic Dog
*
Vulpes vulpes
Red Fox
*
Domestic Cat
*
Mustela putorius
European Polecat, Ferret
*
AVES
BIRDS
X
Family CANIDAE
Family FELIDAE
Felis catus
Family MUSTELIDAE
X
Family CLIMACTERIDAE
Climacteris rufa
X
Rufous Treecreeper
Family ANATIDAE
Oxyura australis
Blue-billed Duck
Biziura lobata
Musk Duck
Stictonetta naevosa
Freckled Duck
Ma
X
D
APPENDIX G
Scientific Name
Common Name
Cygnus atratus
Black Swan
Tadorna tadornoides
Australian Shelduck (Mountain Duck)
Chenonetta jubata
Australian Wood Duck
Anas gracilis
Grey Teal
Anas castanea
Chestnut Teal
Anas platyrhynchos
Mallard
Anas superciliosa
Pacific Black Duck
Anas rhynchotis
Australasian Shoveler
Aythya australis
Hardhead
Introduced
EPBC
Conservation Status
WC
DEC
Local
√
A
B
C
X
X
X
X
D
*
X
Family PODICIPEDIDAE
Tachybaptus novaehollandiae
Australasian Grebe
Poliocephalus poliocephalus
Hoary-headed Grebe
Podiceps cristatus
Great Crested Grebe
X
X
Family ANHINGIDAE
Darter
X
Phalacrocorax carbo
Great Cormorant
Phalacrocorax varius
Pied Cormorant
Phalacrocorax sulcirostris
Little Black Cormorant
Phalacrocorax melanoleucos
Little Pied Cormorant
X
X
X
X
Anhinga melanogaster
Family PHALACROCORACIDAE
Family PELECANIDAE
Pelecanus conspicillatus
Australian Pelican
Ma
X
X
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
Family ARDEIDAE
Ardea pacifica
White-necked Heron
Ardea novaehollandiae
White-faced Heron
Ardea garzetta
Little Egret
Ardea sacra
Eastern Reef Egret
Mi, Ma
Ardea alba
Great Egret, White Egret
Mi, Ma
Nycticorax caledonicus
Rufous Night Heron
Bubulcus ibis
Cattle Egret
Mi, Ma
Plegadis falcinellus
Glossy Ibis
Mi, Ma
Threskiornis molucca
Australian White Ibis
Ma
Threskiornis spinicollis
Straw-necked Ibis
Ma
Platalea regia
Royal Spoonbill
Platalea flavipes
Yellow-billed Spoonbill
X
X
Ma
X
X
Ma
X
Family THRESKIORNITHIDAE
X
X
X
Family ACCIPITRIDAE
Pandion haliaetus
Osprey
Elanus caeruleus
Black-shouldered Kite
Hamirostra isura
Square-tailed Kite
Haliastur sphenurus
Whistling Kite
Ma
Accipiter fasciatus
Brown Goshawk
Ma
X
Accipiter cirrocephalus
Collared Sparrowhawk
Aquila morphnoides
Little Eagle
Aquila audax
Wedge-tailed Eagle
Haliaeetus leucogaster
White-bellied Sea-Eagle
Mi, Ma
X
Circus approximans
Swamp Harrier
Mi, Ma
X
Ma
X
X
X
X
X
X
X
D
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
X
X
X
X
X
Family FALCONIDAE
Falco berigora
Brown Falcon
Falco cenchroides
Nankeen Kestrel; Australian Kestrel
Falco longipennis
Australian Hobby
Falco peregrinus
Peregrine Falcon
Ma
S4
Family RALLIDAE
Gallirallus philippensis
Buff-banded Rail
Porzana fluminea
Australian Spotted Crake
Porphyrio porphyrio bellus
Purple Swamphen
Gallinula ventralis
Black-tailed Native-hen
Gallinula tenebrosa
Dusky Moorhen
Fulica atra
Eurasian Coot
X
Ma
Ma
X
X
X
X
X
Family SCOLOPACIDAE
Tringa nebularia
Common Greenshank
Mi, Ma
Tringa glareola
Wood Sandpiper
Mi, Ma
Tringa hypoleucos
Common Sandpiper
Mi, Ma
X
X
X
Family TURNICIDAE
Turnix varia
X
Painted Button-Quail
X
Family RECURVIROSTRIDAE
Himantopus himantopus
Black-winged Stilt
Cladorhynchus leucocephalus
Banded Stilt
Recurvirostra novaehollandiae
Red-necked Avocet
Ma
Ma
X
X
X
D
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
Family CHARADRIIDAE
Vanellus tricolor
Banded Lapwing
Pluvialis squatarola
Grey Plover
Mi, Ma
Pluvialis dominica
American Golden Plover
Mi, Ma
Charadrius ruficapillus
Red-capped Plover
Ma
Charadrius mongolus
Lesser Sand Plover
Mi, Ma
Charadrius leschenaultii
Greater Sand Plover
Mi, Ma
Charadrius melanops
Black-fronted Dotterel
Thinornis rubricollis
Hooded Plover
X
X
Ma
X
Family LARIDAE
Larus novaehollandiae
Silver Gull
Ma
Sterna caspia
Caspian Tern
Ma
Sterna bergii
Crested Tern
Ma
Sterna hirundo
Common Tern
Mi, Ma
Sterna paradisaea
Arctic Tern
Mi, Ma
Sterna nereis
Fairy Tern
Sterna anaethetus
Bridled Tern
Sterna hybrida
Whiskered Tern
Sterna leucoptera
White-winged Black Tern
Ma
Mi, Ma
Ma
Mi, Ma
Family COLUMBIDAE
Columba livia
Streptopelia senegalensis
Domestic Pigeon
Laughing Turtle-Dove
*
Streptopelia chinensis
Spotted Turtle Dove
*
Phaps chalcoptera
Common Bronzewing
*
X
X
X
D
APPENDIX G
Scientific Name
Common Name
Ocyphaps lophotes
Crested Pigeon
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
X
X
X
X
X
X
X
X
X
D
Family PSITTACIDAE
Calyptorhynchus banksii naso
Forest Red-tailed Black Cockatoo
Calyptorhynchus latirostris
Carnaby’s Cockatoo
EN
S1
Calyptorhynchus baudinii
Baudin’s Cockatoo
VU
S1
Cacatua roseicapilla
Galah
Cacatua tenuirostris
Eastern Long-billed Corella
Cacatua pastinator butleri
Butler’s Corella
S1
√
√
√
*
Cacatua sanguinea
Little Corella
*
Cacatua galerita galerita
Sulphur-crested Cockatoo
*
Trichoglossus haematodus moluccanus
Rainbow Lorikeet
*
Polytelis anthopeplus
Regent Parrot
Platycercus zonarius
Australian Ringneck
Platycercus spurius
Neophema elegans
Platycercus icterotis
Red-capped Parrot
Elegant Parrot
Western Rosella
X
X
X
X
X
X
X
X
X
X
X
X
X
Family CUCULIDAE
Cuculus pallidus
Pallid Cuckoo
Ma
Cacomantis flabelliformis
Fan-tailed Cuckoo
Ma
Chrysococcyx basalis
Horsfield’s Bronze Cuckoo
Ma
Chrysococcyx lucidus
Shining Bronze Cuckoo
Ma
Ninox novaeseelandiae boobook
Boobook Owl
Ma
Ninox connivens
Barking Owl
X
X
X
X
Family STRIGIDAE
X
X
X
X
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
X
Family TYTONIDAE
Tyto novaehollandiae novaehollandiae
Masked Owl (southern)
Tyto alba
Barn Owl
X
X
Tawny Frogmouth
X
P3
Family PODARGIDAE
Podargus strigoides
Family APODIDAE
Apus pacificus
Fork-tailed Swift
Mi, Ma
X
Ma
X
X
X
X
Mi, Ma
X
X
Family HALCYONIDAE
Dacelo novaeguineae
Laughing Kookaburra
Todiramphus sanctus
Sacred Kingfisher
*
Family MEROPIDAE
Merops ornatus
Rainbow Bee-eater
Family MALURIDAE
Malurus splendens
Splendid Fairy-wren
Stipiturus malachurus westernensis
Southern Emu-wren
X
Family PARDALOTIDAE
Pardalotus punctatus
Spotted Pardalote
Pardalotus striatus westraliensis
Striated Pardalote
Family ACANTHIZIDAE
X
X
X
D
APPENDIX G
Conservation Status
WC
DEC
Local
Scientific Name
Common Name
Sericornis frontalis maculatus
White-browed Scrubwren
Smicrornis brevirostris
Weebill
Gerygone fusca fusca
Western Gerygone
Acanthiza apicalis
Broad-tailed Thornbill (Inland Thornbill)
Acanthiza inornata
Western Thornbill
Acanthiza chrysorrhoa
Yellow-rumped Thornbill
C
X
X
X
X
X
X
Lichmera indistincta
Brown Honeyeater
X
Lichenostomus virescens
Singing Honeyeater
Lichenostomus ornatus
Yellow-plumed Honeyeater
Melithreptus chloropsis
Western White-naped Honeyeater
Phylidonyris novaehollandiae
New Holland Honeyeater
Phylidonyris nigra
White-cheeked Honeyeater
Phylidonyris melanops
Tawny-crowned Honeyeater
Acanthorhynchus superciliosus
Western Spinebill
Manorina flavigula
Yellow-throated Miner
Anthochaera lunulata
Western Little Wattlebird
Anthochaera carunculata
Red Wattlebird
Epthianura albifrons
White-fronted Chat
Introduced
EPBC
A
B
X
Family MELIPHAGIDAE
X
X
X
X
X
X
X
Family PETROICIDAE
Microeca fascinans
Jacky Winter
Petroica multicolor
Scarlet Robin
Petroica goodenovii
Red-capped Robin
Petroica cucullata
Hooded Robin
Eopsaltria australis
Yellow Robin
X
X
X
D
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
C
D
Family POMATOSTOMIDAE
Pomatostomus superciliosus
White-browed Babbler
Family NEOSITTIDAE
Varied Sittella
X
Pachycephala pectoralis
Golden Whistler
Pachycephala rufiventris
Rufous Whistler
Colluricincla harmonica
Grey Shrike-thrush
X
X
X
Daphoenositta chrysoptera
Family PACHYCEPHALIDAE
Family DICRURIDAE
Rhipidura fuliginosa preissi
Grey Fantail
Rhipidura leucophrys
Willie Wagtail
Grallina cyanoleuca
Magpie-lark
Ma
Coracina novaehollandiae
Black-faced Cuckoo-shrike
Ma
Lalage tricolor
White-winged Triller
X
X
X
Family CAMPEPHAGIDAE
X
X
Family ARTAMIDAE
Artamus cinereus
Black-faced Woodswallow
Artamus cyanopterus
Dusky Woodswallow
X
X
Grey Butcherbird
X
Family CRACTICIDAE
Cracticus torquatus
X
APPENDIX G
Scientific Name
Common Name
Cracticus nigrogularis
Cracticus sp.
Pied Butcherbird
Cracticus tibicen dorsalis
Australian Magpie
Strepera versicolor
Conservation Status
WC
DEC
Local
A
B
C
D
X
X
X
Grey Currawong
Australian Raven
X
X
Introduced
EPBC
Butcherbird
Family CORVIDAE
Corvus coronoides
Family HIRUNDINIDAE
Hirundo neoxena
Welcome Swallow
Ma
Hirundo nigricans
Tree Martin
Ma
X
X
Silvereye
Ma
X
Family ZOSTEROPIDAE
Zosterops lateralis
Family SYLVIIDAE
Megalurus gramineus
Little Grassbird
Cincloramphus cruralis
Brown Songlark
Acrocephales stentoreus
Clamorous Reed-Warbler
Concloramphus mathewsi
Rufous Songlark
X
X
X
X
Mistletoebird
X
Australian Pipit; Richard's Pipit
X
Mi, Ma
Family DICAEIDAE
Dicaeum hirundinaceum
Family MOTACILLIDAE
Anthus australis
APPENDIX G
Scientific Name
Common Name
REPTILIA
REPTILES
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
Family AGAMIDAE
Pogona minor minor
Western Bearded Dragon
Rankinia adelaidensis
Western Heath Dragon
X
X
Family CARPHODACTYLIDAE
Nephrurus milii
Barking Gecko
Family GEKKONIDAE
Subfamily GEKKONINAE
Christinus marmoratus
Marbled Gecko
Strophurus spinigerus
Southwestern Spiny-tailed Gecko
X
X
Family PYGOPODIDAE
Aprasia repens
Sand-plain Worm-lizard
Lialis burtonis
Burrton’s Legless Lizard
Delma fraseri
Fraser`s Legless Lizard
Pletholax gracilis
Keeled Legless Lizard
√
X
X
X
X
X
Family SCINCIDAE
Acritoscincus trilineatum
Southwestern Cool Skink
Cryptoblepharus plagiocephalus
Ctenotus australis
Ctenotus impar
Odd-striped Skink
Ctenotus fallens
Egernia kingii
King’s Skink
X
X
X
X
C
D
APPENDIX G
Scientific Name
Common Name
Egernia luctuosa
Glossy Swamp Egernia
Egernia napoleonis
Southwestern Crevice Skink
Hemiergis quadrilineata
Two-toed Earless Skink
Introduced
EPBC
Conservation Status
WC
DEC
Local
√
A
X
X
X
X
Lerista elegans
Lerista praepedita
Worm Lerista
Lerista lineata
Lined Skink
Menetia greyii
Common Dwarf Skink
B
P3
√
√
X
X
Morethia lineoocellata
X
X
X
Tiliqua rugosa rugosa
Shingleback; Southwestern Bobtail
Morethia obscura
Woodland Flecked Skink
X
Southern Blind Snake
X
Family TYPHLOPIDAE
Ramphotyphlops australis
Family ELAPIDAE
Demansia psammophis reticulata
Yellow-faced Whipsnake
Echiopsis curta
Bardick
Elapognathus coronatus
Crowned Snake
Neelaps bimaculatus
Black-naped Snake
Neelaps calonotos
Black-striped Snake
Brachyurophis fasciolata
Brachyurophis semifasciata
Notechis scutatus
Southern shovel-nosed snake
Tiger Snake
Parasuta gouldii
Gould’s Snake
Pseudonaja affinis affinis
Dugite
Simoselaps bertholdi
Jan’s Banded Snake
X
P3
X
X
√
√
X
X
X
C
D
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
Family VARANIDAE
Varanus rosenbergi
Southern Heath Monitor
AMPHIBIA
AMPHIBIANS (FROGS)
√
X
√
X
Family HYLIDAE
Litoria adelaidensis
Slender Tree Frog
Litoria moorei
Motorbike Frog, Bell Frog
Family MYOBATRACHIDAE
Subfamily Limnodynastinae
Heleioporus eyrei
Moaning Frog
Limnodynastes dorsalis
Bullfrog or Banjo Frog
Crinia georgiana
Quacking Frog
Crinia glauerti
Glauert’s Froglet
Crinia pseudinsignifera
Crinia insignifera
Bleating Froglet
Squelching Froglet
Myobatrachus gouldii
Turtle Frog
Pseudophryne guentheri
Crawling Frog or Günther’s Toadlet
INSECTA
INSECTS
X
X
X
X
Family TETTIGONIIDAE
Throscodectes xiphos
cricket
X
P1
Family CASTNIIDAE
Synemon gratiosa
Graceful Sun Moth
EN
√
X
C
D
APPENDIX G
Scientific Name
Common Name
Introduced
EPBC
Conservation Status
WC
DEC
Local
A
B
Family COLETIIDAE
Leioproctus contrarius
Bee
P3
X
C
D