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2.6
Consultation
Key Stakeholders identified during the PEIA and subsequent work include:
Department of Conservation and Land Management (CALM) – John Forrest
National Park
Department of Environment (DoE) – Water catchments, clearing.
City of Swan, Shire of Mundaring.
Heritage Council of Western Australia – Convict Station.
2.6.1
Department of Conservation and Land Management (CALM)
CALM was previously consulted regarding the area of construction just west of Passing
Lane 1 and adjoining John Forrest National Park (GHD 2002). No particular issues
were raised with regard to the construction of that passing lane in terms of there being
any particular aspects of conservation significance in the works area. However, it was
noted that a number of issues should be further investigated and considered in an
EMP. These were:
•
Threatened flora – a survey should be carried out and the impacts on any
species found should be detailed;
•
Dieback – a detailed dieback management plan should be developed including
a dieback survey by an expert dieback interpreter;
•
Vegetation – clearing of vegetation should be minimised and rehabilitation of
construction disturbance carried out where appropriate;
•
Spoil removal – any spoil to be removed offsite to prevent potential weed and
disease spread;
•
Weed control – a weed management program should be developed;
•
Drainage – any increased drainage should be maintained on site;
•
Access – access to John Forest National Park should be maintained; and
•
Fire management – should be considered if work is to occur during the wildfire
season.
CALM indicated in 2002 (Mr Keith Tressider, pers. comm.), that the area just west of
(and downslope of) Passing Lane 1 is dieback free.
It has also been indicated that there is a long-term requirement for CALM to provide
public access to the park at the northern end of John Forrest National Park, but there
are no plans for where this might occur.
2.6.2
Department of Environmental Protection (former) / Department of
Environment
Following the discussions with CALM about another passing lane just west of Passing
Lane 1, the former Department of Environmental Protection (DEP) was consulted in
2002 by MRWA and confirmed that, provided that the advice of CALM was followed,
there would be no requirement to refer the Passing Lane 1 proposal to the EPA for
assessment.
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From the above it can be assumed that referral of Passing Lane 1 and the other
passing lanes to the EPA will not be required. The DoE (Swan Goldfields Agricultural
Region) were also contacted with regard to the need for a Permit to Disturb Bed or
Bank for the impacts on minor waterways. Bob Whittaker of this Region noted the
small risk of sedimentation from roadworks and the possible impact on downstream
landowners, particularly regarding water quality in dams. Details of the proposal have
been forwarded to the Region and MRWA should also provide the EMP to the DoE for
future reference.
2.6.3
Heritage Council of Western Australia
The Heritage Council of Western Australia was consulted by GHD in regards to
Proposed Passing Lane 1 and its potential impact on the Redhill Convict Station. The
Heritage Council endorsed the Conservation Plan prepared for MRWA in 1998 by
Heritage and Conservation Professionals. However, recommendations made by the
Heritage Council are only valid for a period of two years, and therefore there is a
requirement to submit a Development Referral.
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3.
Potential Environmental, Cultural and Social
Constraints or Impacts
The most significant constraint to the construction of the passing lanes along Toodyay
Road is the presence of the road reserve adjacent to John Forrest National Park at
Red Hill (Passing Lane 1) and the loss of road reserve vegetation that will occur during
the construction of the passing lanes.
All relevant issues will be the subject of management requirements in the
Environmental Management Plan for the project.
3.1
Biological Issues
3.1.1
Land Clearing
New legislation under the Environmental Protection (Clearing of Native Vegetation)
Regulations 2004, proclaimed on 8 July 2004, protects all native vegetation in Western
Australia. Under the new law, clearing native vegetation is prohibited, unless a
clearing permit is granted by the DoE, or the clearing is for an exempt purpose. These
exemptions ensure that low impact day-to-day activities involving clearing or activities
that are required under other laws can be undertaken without individual permits or
activities. Proponents that wish to clear are required to submit an application if an
exemption does not apply. This will be assessed against principles that consider
biodiversity, land degradation and water quality. MRWA has an exemption for road
widening works until January 2006, except where those works impact an
Environmentally Sensitive Area (ESA). As Passing Lane 1 has some potential to
indirectly impact the John Forrest National Park, a Clearing Permit will be required for
that area, however, it is believed that Passing Lanes 2 and 4 would be exempt.
Although Passing Lane 4 passes close to part of Wooroloo Brook, which is mapped as
an ESA, there will be no direct impact on the Brook.
3.1.2
Impacts on Wetlands
Passing Lane one has the potential to impact directly on a tributary of Strelley Brook
which crosses the road in that area and which runs parallel to the road for some
distance. Due to the perceived risks, and based on recent consultation with CALM,
MRWA has re-designed the drainage of Passing Lane 1 to avoid having any direct
impact on the Brook where it runs parallel to the road. There is a minor risk of erosion
and downstream sedimentation within and along the channel, and this will need to be
managed carefully through suitable rock armouring and other scour protection
mechanisms.
The works at Passing Lane 4 intersect a minor drainage gully running across the road
to the east. There is potential for erosion at this gully but suitable culvert engineering
and protection will minimise this risk.
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A Permit to Disturb a Bed or Bank is not required due to the small size of the
waterways which will be impacted. However, the DoE have been given notice of the
location and details of works in case any complaints from downstream landowners are
made.
3.1.3
Flora and Vegetation Protection
Declared Rare and Priority Species
No Declared Rare or priority flora species are listed by CALM as occurring within the
road reserve area between Red Hill and Berry Road, and none have been observed
during field investigations. It is possible that some of these species will occur in the
more intact vegetation of the John Forrest National Park or other patches of remnant
vegetation bordering the road reserve. Since none of this vegetation will be destroyed
during the construction activities, there will be no known detrimental impacts to any
potentially occurring species of conservation significance.
Threatened Ecological Communities
No listed Threatened Ecological Communities (TECs) are found within the areas of the
Passing Lanes or Truckbay and none of the vegetation types recorded match known
TEC vegetation descriptions.
Weeds
There are some significant weeds present in the areas of proposed works.
Construction work in the areas which have such weeds present should ensure that soil
or spoil from these areas is not spread to other sections of Toodyay Road or areas of
native vegetation bordering the road verge. The areas which currently have an
infestation of Leptspermem laevigatum (Victorian Tea Tree) and Watsonia meriana,
should be managed through a weed management plan, and monitored following
construction works. Targeted weed control is also required in order to achieve
successful rehabilitation within the road reserve adjacent to the works areas.
Dieback
The dieback fungus has not been found to be present within the area of Passing Lane
1 and the truck bay, adjoining John Forrest National Park (Glevan, 2004 and CALM,
pers. comm.). However, there is a small chance that dieback may be present in the
other passing lane areas and Lilydale Pit. Dieback management should be included
as part of an EMP for the works and the details of the recommended dieback hygiene
should be disucssed with CALM.
No other issues with regard to specific vegetation impose any legislative constraint on
the project. Standard design and construction management procedures would be
necessary to minimise impacts.
3.1.4
Fauna
The potential impacts of the passing lanes on the fauna are minimal due to the small
amounts of habitat in the road reserve and the presence of other significant areas of
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habitat within the broader area. No special measures are likely to be necessary to
manage fauna.
3.2
Social and Cultural Issues
3.2.1
Access and Severance
The development of the passing lanes is an extension to the existing road service.
Therefore, access and severance would not be considered to be a significant issue.
The design of the passing lanes takes all road and farm access requirements into
account and may involve only temporary impacts on residents and road users.
3.2.2
European Heritage
Passing Lane 1 may potentially impact the site of the underground oven associated
with the Redhill Convict Station. It is believed that this oven is under the southern
carriageway or shoulder at around SLK 7.050. GHD consulted the Heritage Council of
Western Australia, and despite endorsement from the council in 1998, the proposed
works will require the submission of a Development Referral. The Referral should
include a summary of the project, an outline of the potential impacts and any research
that has already been undertaken.
It is recommended that MRWA commission an archaeologist to be present during
excavation works in the vicinity of the potential oven location.
3.2.3
Aboriginal Heritage
No Aboriginal sites, registered on the Department of Indigenous Affairs (DIA)
database, have been identified within the study area.
A search of the DIA database does not comprise of a full assessment under the
Aboriginal Heritage Act (1972). This would require consultation with Aboriginal people
with knowledge of the area (usually, but not necessarily, Native Title Claimants), and
an archaeological survey to ascertain whether any previously unrecorded
archaeological sites are within the proposed works area. If any significant
ethnographic or archaeological sites are found within the proposed works area, a
clearance under Section 18 of the Act will be required.
Under the Aboriginal Heritage Act (1972), it is an offence to disturb an Aboriginal
heritage site whether it is registered or not. The proponent should be made aware of
this in any decision making with respect to whether they should proceed to a full
Aboriginal heritage site assessment.
Should any artefacts or other materials of potential indigenous significance be
discovered at the site, such as during earthworks, investigations will be required to
ascertain the implications of the presence of these materials and the DIA should be
notified of the find. This is a requirement under the Aboriginal Heritage Act, 1972.
Should any skeletal remains be found during earthworks the Western Australian Police
should be notified.
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3.3
Construction Issues
The possibility of significant construction impacts on adjacent houses and buildings
has been considered. Fieldwork and design drawings indicate that there are no
residential premises located within 200m of the road.
3.3.1
Noise
No residential dwellings were seen during the 2005 site visit to be within 200m of the
edge of Toodyay Road in any of the areas proposed for the passing lanes. Therefore
noise is unlikely to be an issue. Under the Environmental Protection (Noise)
Regulations 1997 (DEP, 1997) there is no requirement for the noise from construction
activities to be kept under particular limits. However, there are requirements related to
working hours, equipment noise and complaints.
3.3.2
Dilapidation
As above, no residential dwellings were seen during the 2005 site visit to be within
200m of the edge of Toodyay Road in any of the areas proposed for the passing lanes.
Therefore a dilapidation study is not believed to be required.
3.3.3
Dust
Dust will be a potential nuisance factor for road users when the new passing lanes are
being constructed. However, dust can be adequately managed using standard
techniques.
3.3.4
Protection of Water Quality
Due to the slopes and soil types considerable runoff may be expected following heavy
rain events during the construction period and prior to effective rehabilitation. This
must be carefully managed in order to prevent detrimental impacts on the tributaries to
the Wooroloo Brook, Strelley Brook and the other ephemeral drainage lines in the
area. The main issue of concern will be with regard to turbidity and sedimentation but
this can be managed using standard construction techniques.
3.4
Road Operation and Use
This section identifies potential issues associated with the operation and use of the
passing lanes.
3.4.1
Potential for Air Pollution
The levels of traffic identified in this proposal are significantly below any criteria for an
air quality assessment. The MRWA Environmental Guideline on Air Quality indicates
that a local air quality assessment is not required if :
the road traffic levels are predicted to be less than 15,000 vpd for rural areas; or
there are no sensitive receptors within 200m of the road centre.
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Both of these criteria are found in the areas of all Passing Lanes and the truck bay.
The rural location of this road indicates that existing air quality in this area will be of a
very high standard, unless significant wood burning is undertaken for space heating
during the winter. The construction of the passing lanes will, in fact, improve traffic
flow and therefore have a positive effect on air pollution.
3.4.2
Traffic Noise
The developments are an extension of the current road. Therefore it would be
expected that noise levels would not increase due to the construction of the passing
lanes.
3.4.3
Runoff and Drainage Aspects
Road runoff is likely to be quite substantial due to the soil types, slopes and extent of
pavement. This concentrated runoff has the potential to cause considerable scour as
well as affecting stream zones and downstream water quality. Some localised
dissipation of drainage water may be required to effectively control water flows and
reduce the risks of downstream pollution and scouring. Rock protection has been
designed for areas at high risk of erosion and this should be satisfactory for reducing
the risk of impacts from concentrated runoff.
3.4.4
Visual Impact
Toodyay Road is located through a largely rural landscape as well as an area of
National Park, which, due to its location at the edge of the Darling Scarp (Passing Lane
1), provides exceptional views over the coastal plain. The potential for negative visual
impacts as a result of the construction of the passing lanes is considered to be low.
MRWA should ensure that during construction that all trees that need to be removed
are clearly marked. Once work is completed on the passing lanes, appropriate
rehabilitation techniques should be utilised to improve areas adjacent to the works
area.
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4. Risk Assessment
Two risk assessment techniques have been used to consider the significance of the
proposed road with regard to a range of issues. These are:
1. MRWA Low Impact Environmental Screening; and
2. MRWA Environmental Aspects for Referral to EPA.
4.1
MRWA Low Impact Environmental Screening
As a result of this checklist the project had a small number of aspects that were subject
to further assessment and it was therefore not classed as low impact. The potential
impacts have been further investigated in the PEIA and this EIA.
4.2
MRWA Environmental Aspects for Referral
MRWA has produced a list of environmental aspects, which, if affected by a road
proposal, would require that proposal to be referred to the EPA (see Appendix B).
Some of these may also trigger the Commonwealth Environmental Protection and
Biodiversity Conservation Act (1999) and therefore require the project to be referred to
the Department of Environment and Heritage (DEH).
All aspects in this list have been considered with regard to their relevance to the
Toodyay Road passing lanes and none are likely to ‘trigger’ referral to the EPA or the
DEH. The potential for impacts on the National Park has been discussed with CALM
and the former DEP and the latter have confirmed that referral is not required.
Under the Environmental Protection (Clearing of Native Vegetation) Regulations 2004,
a Clearing Permit is required for Passing Lane 1, as it may be considered to impact an
ESA (John Forrest National Park).
The presence of the Redhill Convict Station site immediately adjoining Passing Lane 1
requires the need for a development referral to the Heritage Council of Western
Australia. The potential impacts on the site from the construction of Passing Lane 1
have previously been considered by the Heritage Council but the approval and
recommendations have lapsed as it was referred more than 2 years ago.
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5.
Summary of Relevant Issues
The following table summarises the relevant potential issues associated with
construction of the passing lanes along Toodyay Road. Recommendations are made
for the requirement for further study and the potential for formal clearances or special
management necessary for each issue.
Issue
Further Study
Required
Yes/no
Possible Clearance or Special
Management Required
Biological Issues
Impact on the National Park No
Relates to other biological issues
and rehabilitation. Should involve
ongoing consultation with CALM.
Impact on Declared Rare
Flora, Priority flora and
TECs
No
No
Impact on fauna and
habitat
No
No
Land clearing
Possible
A Clearing Permit for Passing
Lane 1 is required under the
Environmental Protection
(Clearing of Native Vegetation)
Regulations 2004.
Weeds
No
Weed Management Program
should be developed for
rehabilitation works and control of
significant environmental weeds.
Dieback
No
Discuss the requirements for
dieback hygiene with CALM for
Passing Lane 1 and truck bay.
Social Issues
Severance and access
No
No
Aboriginal Heritage
No
Section 18 clearance under the
Aboriginal Heritage Act if
significant sites aredisturbed.
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Issue
Further Study
Required
Yes/no
Possible Clearance or Special
Management Required
European Heritage
Possible
Potential impacts on Convict
Station Site. Requires further
consultation with the Heritage
Council and a Development
Referral.
Construction and Road
Use Issues
Impact on water quality
No
Standard runoff management and
erosion protection techniques to
be employed.
Noise
No
No
Dilapidation
No
No
Visual Impact
No
Design and rehabilitation
requirements only.
Rehabilitation
No
Landscape Design and
Revegetation Plans have been
developed (KBR, 2005 and GHD,
2005)
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6.
Conclusion and Recommendations
Most of the issues highlighted in this report with regard to construction of the passing
lanes along Toodyay Road can be adequately managed using standard design and
construction techniques. There are no obvious major constraints to the construction or
operation of the road in terms of clearances that would be difficult to achieve or which
would require innovative design to become acceptable.
The most significant biological issue is in the area of Passing Lane 1, which adjoins the
boundary of John Forrest National Park. MRWA’s previous discussions with CALM
and the former DEP regarding an overtaking lane at (SLK 4.88 to SLK 5.48) indicated
that referral was not required and it is therefore considered that referral will not be
required for Passing Lanes 1, 2, 4 or the truck bay. However, ongoing discussion with
CALM should occur in relation to the acceptance of weed and dieback hygiene
commitments and proposed rehabilitation adjacent to John Forrest National Park.
Given suitable management of drainage and dieback and an agreed revegetation plan
it is not expected that this issue would prevent the project proceeding. There are no
other triggers that would mandate the project being referred to the EPA or the DEH. A
detailed Environmental Management Plan is being developed to ensure adequate
management of all relevant environmental impacts.
A Clearing Permit will be required for Passing Lane 1 as it adjoins an ESA. This will
require details on drainage management during and after construction works,
vegetation protection details and rehabilitation plans.
One European heritage site exists within the vicinity the road reserve at Passing Lane
1. This site is referred to as Redhill Convict Station. It is unlikely that the convict
station ruin will be impacted by construction of Passing Lane 1, however
archaeological research indicates that an oven is possibly present within the proposed
Passing Lane 1 area, mostly likely beneath the existing road shoulder. Consultation
with the Heritage Council indicates that a Referral Document will be required prior to
approval for construction.
No Aboriginal heritage sites have been previously identified within the works area,
however, standard precautions should be taken for management of any archaeological
material which may be uncovered during construction.
Social issues such as severance, noise increase and risk of crashes and spills along
the road would not increase due to the construction of the passing lanes.
6.1
Recommendations
The following are recommendations for completion of the environmental and heritage
assessment of the proposed passing lane project and to ensure that all potential issues
have been addressed.
1. Develop a Weed Management Program to control specific weeds in Passing Lane 1
and to maximise the change of successful rehabilitation in all passing lane areas.
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2. Implement the EMP which is being developed for the project; and
3. Carry out further consultation with:
– CALM in relation to ongoing impacts on the John Forrest National Park,
– the DoE with regard to the required Clearing Permit; and
– the Heritage Council of Western Australia regarding a Development Referral for
the convict site.
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7.
References
Alan Tingay and Associates (1998). A Strategic Plan for Perth’s Greenways. Final
Report. Alan Tingay and Assoc. Perth.
ATA Environmental, 2004. Weed Survey: Toodyay Road. Appendix C in KBR, 2005.
Toodyay Road Passing Lanes Design Report. KBR, Perth.
Beard, J.S. (1979). The Vegetation of the Perth Area. Figure and Explanatory
Memoir, 1:250,000. Vegmap Publications, Perth.
Bush, F., Gibbs, M. and Stephens, J. (1996). The Toodyay Road Redhill Convict Road
Station; an Archaeological and Architectural Assessment. Prepared for Main Roads
and the Shire of Swan, January 1996.
CALM (1991). Flora and Fauna Survey of the John Forrest National Park and Red Hill
Area. Report to the Heritage Council. Department of Conservation and Land
Management, Perth, June 1991.
CALM (1994). John Forrest National Park Management Plan 1994-2004. Report to
NPNCA. Department of Conservation and Land Management , Perth.
CALM, 1999. Environmental Weed Strategy for Western Australia. Department of
Conservation and Land Management, Perth.
Churchward, H.M and McArthur, W.M. (1978). Darling System, Landforms and Soils.
Division of Land Resources Management, CSIRO. Perth.
Department of Agriculture, 2005. Declared Plants Search.
[http://agwdsrv02.agric.wa.gov.au/dps/version02/01_plantsearch.asp] viewed 27 June
2005.
Department of Environmental Protection (1997). Environmental Protection (Noise)
Regulations 1997. Summary of the Regulations, Government of Western Australia.
Dell, J. (1983). The importance of the Darling Scarp to fauna. In J.D. Majer (Ed.),
Scarp Symposium. WAIT Environmental Studies Group, Report No. 10.
EPA, 2004. Revised Draft Environmental Protection (Swan Coastal Plain Wetlands)
Policy and Regulations 2004. EPA, Perth.
Garnett, S. (Ed.) (1992). Threatened and extinct birds of Australia. Royal Australasian
Ornithologists Union, Report No. 82.
Garnett, S.T. and G.M. Crowley (2000). The Action Plan for Australian Birds. 2000.
Environment Australia, Canberra.
GHD (2002) Toodyay Road Passing Lanes 1 to 4 - Preliminary Environmental Impact
Assessment. Report prepared for Main Roads Western Australia.
GHD (2005). Toodyay Road Passing Lanes Revegetation Plan. Report prepared for
Main Roads Western Australia.
28
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Glevan Consulting, 2004. Phytophthora cinnamomi – Assessment Results and
Management recommendations. Glevan Consulting, Perth.
Heddle, E.M., Loneragan O.W. and Havel, J.J. (1980). Vegetation Complexes of the
Darling System Western Australia. In: Atlas of Natural Resources, Darling System
Western Australia. Department of Conservation and Environment, 1980.
Heritage and Conservation Professionals (1998). Redhill Convict Station, Toodyay
Road. Conservation Plan. Prepared for Main Roads Western Australia.
Hill, A.L.., Semeniuk, C.A., Semeniuk, V and Del Marco, A. (1996). Wetlands of the
Swan Coastal Plain, Volume 2B. Water and Rivers Commission and Department of
Environmental Protection, WA.
Johnstone, R.E. and G.M. Storr (1998). Handbook of Western Australian Birds.
Volume 1. Non-Passerines. W.A. Museum, Perth.
KBR, 2005. Toodyay Road Passing Lanes Design Report. KBR, Perth.
Kennedy, M. (Ed.) (1990). A Complete Reference to Australia’s Endangered Species.
Simon and Schuster, Sydney.
Main Roads Western Australia (2003). Toodyay Road Passing Lanes Environmental
Management Plan. Unpublished report, Main Roads Western Australia.
Storr, G.M. (1991). Birds of the South-West Division of Western Australia. Records of
the Western Australian Museum, Supp. No. 35.
Wilson, S.K. and D.G. Knowles (1988). Australia’s Reptiles. Collins, Sydney.
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Figure 1
Toodyay Road Locality Plan
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Appendix A
List of Rare Fauna Possible in the
Project Area (2005)
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APPENDIX A
List of the rare vertebrate fauna species recorded in the CALM
rare fauna database.
Schedule 1 (Fauna which is Rare or likely to become Extinct)
Chuditch (Dasyurus geoffroii) This species occurs in the area in question and is
becoming more common in areas of jarrah-wandoo forest that are baited to control
exotic predators. It is classified as ‘Vulnerable’ under the EPBC Act.
Carnaby’s Cockatoo (Calyptorhynchus latirostris) This species is a seasonal visitor
in the area in question. It feeds extensively on the proteaceous shrublands where they
have been retained. It is classified as “Endangered’ under the EPBC Act.
Baudin’s Cockatoo (Calyptorhynchus baudinii) This species is resident in the tall
eucalypt forest to the south of Mundaring and a seasonal visitor in areas around John
Forest National Park and further north. It is classified as “Endangered’ under the
EPBC Act.
Schedule 4 (Fauna which is Otherwise Specially Protected)
Peregrine Falcon (Falco peregrinus) This species may occur as a vagrant in the
area in question, either in open woodlands or around the quarries located in the area in
question.
Carpet Python (Morelia spilota imbricata) This species is known to occur in upland
areas throughout this part of the Darling Scarp wherever remnant vegetation has been
retained.
Priority Taxa
Brush-tailed Phascogale (Phascogale tapoatafa) P3 This species occurs in the tall
eucalypt forests around Mundaring and areas to the north but is generally at low
densities.
Quenda (Isoodon obesulus fusciventer) P5 This species has been recorded from
the area in question in locations with low dense heath vegetation and jarrah and marri
forest, particularly in riparian habitats.
Western Brush Wallaby (Macropus irma) P4 This species still occurs in the larger
patches of native shrubland within the area in question.
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Appendix B
Environmental Aspects for Referral to the
EPA or DEH
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Types of Environmental Aspects
A road project that has environmental aspects from the following lists will most likely require
referral to the EPA. These aspects may be considered in terms of biophysical, pollution
prevention and social surroundings.
Factor
Description
Present on Toodyay Road
Native remnant
vegetation
Areas recommended for protection in the
System’s ‘Red Book’ reports in non-Perth
metropolitan regions.
No
Areas identified in Bush Forever, which
supersedes the System’s ‘Red Book’ reports
in areas of overlap.
No
Land vested in the National Parks and Nature
Conservation Authority for the purpose of
Conservation of Flora and Fauna, National
Park or Conservation Park.
Adjoins John Forrest
National Park at Passing
Lane 1 and truck bay
Areas recommended by the Department of
Conservation and Land Management and
endorsed by Government for inclusion in
Department of Conservation and Land
Management's Estate.
No
Land reserved as “Parks and Recreation”
under the Metropolitan Region Scheme.
No
Areas managed for multiple uses where
conservation is a defined use.
No
Land reserved under the Regional Forest
Agreement CAR reserve system
No
Areas with rare vegetation communities, or
assemblages considered by the EPA not
adequately represented in secure
conservation reserves (including Threatened
Ecological Communities).
No
Land containing declared rare flora and fauna
and the habitats of declared rare fauna.
None observed
Vegetation in regional areas where there is
less than 20% remnant vegetation remaining
within the local authority area.
No
Vegetation in regional areas which is
considered to poorly represented according to
definitions within the Environmental
Protection Authority Position Statement No.2
“Environmental Protection of Native
Vegetation in Western Australia”
No
Vegetation which includes species of declared
rare and priority flora where specific clearance
has not been obtained from Department of
Conservation and Land Management for the
clearing of this vegetation.
None known
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Factor
Description
Present on Toodyay Road
Wetlands
Lakes nominated for protection in the
Environmental Protection (Swan Coastal Plain
Lakes) Policy gazetted in December 1992.
No
Conservation and Resource Management
category wetlands.
No
Wetlands nominated for protection in the Draft
Environmental Protection Policy for Lakes and
Swamps of the South West Agricultural Zone.
No
Wetland areas recommended for protection in
the System’s ‘Red Book’ reports not within the
area covered by Bushplan.
No
Conservation wetlands identified in Bush
Forever, which supersedes the System’s ‘Red
Book’ reports in areas of overlap.
No
Wetlands on land vested in the National Parks
and Nature Conservation Authority for the
purpose of Conservation of Flora and Fauna,
National Park or Conservation Park, or areas
recommended, and endorsed by Government,
for inclusion in Department of Conservation
and Land Management estate for conservation
purposes.
No
Wetlands in areas reserved as “Parks and
Recreation” under the Metropolitan Region
Scheme.
No
Wetlands with rare vegetation communities
considered by the EPA not adequately
represented in secure conservation areas, or
rare flora and fauna (and their habitats)
especially east of the Swan Coastal Plain.
No
Wetlands recognised by international
agreement because of their importance
primarily for waterbirds and their habitats. (eg:
RAMSAR, JAMBA, CAMBA).
No
Watercourses and
rivers
Watercourses recommended for protection in
the System’s ‘Red Book’ reports not within the
area covered by Bushplan.
No
Watercourse wetlands identified in Bush
Forever, which supersedes the System’s ‘Red
Book’ reports in areas of overlap.
No
Watercourses containing lakes protected
under the Environmental Protection (Swan
Coastal Plain Lakes) Policy 1992.
Strelley Brook
Wooroloo Brook
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Factor
Description
Present on Toodyay Road
Watercourses on land vested in the National
Parks and Nature Conservation Authority for
the purpose of Conservation of Flora and
Fauna, National Park or Conservation Park or
areas recommended, and endorsed by
Government, for inclusion in the Department
of Conservation and Land Management estate
for conservation purposes.
A minor tributary of
Strelley Brook at passing
Lane 1
Watercourses in areas reserved as “Parks and
Recreation” under the Metropolitan Region
Scheme.
No
Watercourses with rare vegetation
communities considered by the EPA not
adequately represented in secure
conservation areas, or rare flora and fauna
(and their habitats).
No
Estuaries and inlets
Coastlines and near
shore marine areas
In general, all estuaries are of interest to the
EPA, however, certain estuaries have specific
management agencies which have statutory
and advisory roles to play in their protection.
These include the:
•
Peel Inlet - Harvey Estuary,
•
Leschenault Inlet,
•
Albany and Princess Royal Harbour,
•
Wilson Inlet, and
•
Swan - Canning Estuary.
N/A
Areas recommended for protection in the
Systems ‘Red Books’ reports.
N/A
Coastline containing mangroves.
N/A
Areas identified by the Department of
Conservation and Land Management for
inclusion on the List of Wetlands of
International Importance (RAMSAR
Convention).
N/A
Coastline areas (including marine areas)
recommended by Department of Conservation
and Land Management, and endorsed by
Government for inclusion in Department of
Conservation and Land Management's estate
for conservation purposes.
N/A
Coastline in areas reserved for “Parks and
Recreation” under the Metropolitan Region
Scheme.
N/A
Coastline areas with rare vegetation
communities considered by the EPA not
adequately represented in secure
conservation areas, or rare flora and fauna
(and their habitats).
N/A
Coastline where recreational use is high, such
as beaches in the metropolitan region.
N/A
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Factor
Description
Present on Toodyay Road
Significant landforms including Beach Ridge
Plain, Coastal Dunes (generally within 100 m
of the shore) and Karst landforms.
N/A
Catchments with
special requirements
Lake Clifton
N/A
Western Swamp Tortoise Habitat
N/A
Forrestdale Lakes
N/A
Wetlands and their associated environmental
management areas, associated with Jandakot
and Gnangara Mounds.
N/A
Table E.1 Biophysical Aspects cont …
Factor
Description
Present on Toodyay Road
Contaminated soils
Existing areas of soil contamination that may
be disturbed by future construction of road
transport infrastructure.
Not known, highly
unlikely
Noise and Vibration
Potential impacts on residential areas due to
the relationship between the location of road
transport infrastructure with respect to
residential areas or other sensitive facilities
such as hospitals and the like.
No
Public water source
areas - groundwater
and surface water
Priority 1 & 2, Gnangara Mound.
No
Priority 1 & 2, Jandakot Mound.
No
Water & Rivers Commission gazetted
groundwater areas outside the Perth
metropolitan area.
No
All surface catchments where water is
collected for public water supply purposes.
No
Table E.2
Pollution Prevention
Aspects
Factor
Description
Present on Toodyay Road
Aboriginal heritage
Sites of Aboriginal significance due to
ethnographic or archaeological issues.
None recorded.
European Heritage
Sites listed by the Australian Heritage
Commission or the Register of Heritage
Places.
No
Adjacent land uses
Land uses and zonings
,
which could be
affected by road proposals.
No
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Appendix C
Convict Station Site Details
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Appendix D
Field Records of Flora Species Observed
During Site Visits in 2002 and 2005
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Passing Lane Number 1 and Truck Bay: Eastbound from SLK 5.62 to SLK 7.28.
This section of overtaking lane 1 was assessed from the boundary of John Forrest National Park with
Toodyay Road, to 150-200 metres east of the site entrance to the Pioneer Quarry on Red Hill, a distance
of approximately 1.4 kilometres. The species listed were recorded from the road verge area and the
adjacent area to the road verge. Some of the species recorded were naturally occurring, whilst others
are considered to be revegetation species planted by MRWA in the road verge area in the past. There
are also a number of introduced annual and perennial pasture species present in the road verge area
and beyond.
Species present in the section of road verge from 150 – 200 metres east of Pioneer Quarry entrance till
main quarry entrance:
Acacia nervosa, A. pulchella, A. saligna, Anigozanthos sp., Astroloma pallidum, Chorizema ? dicksonii,
Corymbia calophylla, Gastrolobium/Nemcia sp., Hakea cristata/undulata, H. lissocarpha, H. trifurcata,
Hibbertia hypericoides, Lepidosperma sp., Lomandra sp., Mesomelaena tetragona, Neurachne
alopecuroidea, Patersonia occidentalis, Philotheca spicata, Pimelea suaveolens, Santalaceae sp.,
Synaphea sp. and Xanthorrhoea preissii.
Species present in the section of road verge from the Pioneer Quarry entrance to the boundary with the
John Forrest National Park near the Red Hill convict station site:
Acacia pulchella, Allocasuarina humilis, Andersonia lehmanniana, Anigozanthos sp., Apiaceae sp.,
Astartea fascicularis, Corymbia calophylla, Cryptandra arbutiflora/glabriflora, Dampiera sp. (D.?
lavandulacea), Daviesia sp., Diuris brumalis, Drosera sp., Dryandra bipinnatifida, D. nivea/lindleyana, D.
sessilis, D. squarrosa/armata, Gastrolobium sp., Grevillea endlicheriana, G. synapheae, Hakea
lissocarpha, Hakea sp., H. trifurcata, Hibbertia sp., H. hypericoides, Hovea trisperma, Juncus sp. (J. ?
pallidus), Kennedia prostrata, Lechenaultia biloba, Lepidosperma sp., Leucopogon sp., Lomandra sp.1,
L. sp. 2, Mesomelaena tetragona, Patersonia occidentalis, Pentapeltis peltigera, Petrophile biloba, Sollya
heterophylla, Stylidium amoenum, S. bulbiferum, Thomasia sp., Thysanotus patersonii, Trichocline
spathulata, Trymalium ledifolium and Viminaria juncea.
Two introduced species, which are potentially invasive environmental weeds in this section of proposed
roadworks are Nerium oleander (Oleander) and Watsonia sp. (W. ? meriana).
Passing Lane Number 2: Eastbound from SLK 13.3 to SLK 15.77.
The section of Toodyay Road, which was assessed during the site visit for this passing lane, was from
the intersection with Stoneville Road to the intersection with Morecombe Road, a distance of
approximately 2.0 kilometres. Species present in this area are:
Acacia nervosa, A. pulchella, A. saligna, A. wildenowiana, Agonis linearifolia, Astartea fascicularis,
Boronia/Philotheca sp., Bossiaea ornata, Calothamnus quadrifidus, Casuarina obesa, Corymbia
calophylla, Daviesia horrida/preissii, Desmocladus flexuosus/fasciculatus, Dianella revoluta, Drosera sp.,
Dryandra nivea/lindleyana, Eucalyptus marginata, E. wandoo, Gastrolobium/Nemcia sp., Grevillea
bipinnatifida, Hakea lissocarpha, H. undulata/cristata, Hibbertia hypericoides, Hovea pungens,
Hypocalymma angustifolium, Lechenaultia biloba, Lepidosperma sp., Lomandra sp., Melaleuca
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preissiana, Mesomelaena tetragona, Opercularia hispidula, Pericalymma ellipticum, Phyllanthus
calycinus, Pterostylis sp., ? Stypandra glauca, Xanthorrhoea preissii and X. gracilis.
Environmental weed species present in this section of proposed roadworks are Acacia
baileyana/decurrens, Corymbia citriodora, Cyperus sp., Leptospermum laevigatum and Watsonia ?
meriana.
Passing Lane Number 4: Eastbound from SLK 6.50 to SLK 8.17.
The section of Toodyay Road, which was assessed during the site visit for this passing lane was from the
intersection with Berry Road to the Wooroloo Brook bridge crossing. This covers a distance of
approximately 1.7 kilometres. The first section of roadside vegetation was native remnant vegetation up
until a MRWA marker peg stamped with the figure SLK 8.0. The species recorded in this section of
remnant vegetation are:
Acacia nervosa, A. pulchella, A. saligna, Austrostipa elegantissima, Bossiaea eriocarpa, Burchardia
umbellata/multiflora, Daviesia sp., Desmocladus flexuosus/fasciculatus, Dianella revoluta, Dryandra
nivea/lindleyana, Eucalyptus wandoo, Grevillea ? synapheae, Haemodorum sp., Hakea prostrata,
Hibbertia sp., Kennedia prostrata, Lepidosperma sp., Leucopogon oxycedrus/propinquus, Lomandra sp.,
Orchidaceae sp., Phyllanthus calycinus, Tetraria ? octandra and Xanthorrhoea preissii.
The next section of the road verge, for a distance of approximately 150 – 160 metres from the SLK 8.0
peg, is an area of past MRWA rehabilitation, with the following species present:
Acacia drummondii, A. extensa, A. lasiocarpa, Allocasuarina fraseriana/huegeliana, Allocasuarina sp.,
Banksia grandis, Calothamnus quadrifidus, Drosera sp., Dryandra sp., Eucalyptus leucoxylon var. rosea,
E. wandoo, Gastrolobium/Nemcia sp., Hakea cristata/undulata, H. laurina, H. lissocarpha, H ? petiolaris,
H. trifurcata, Hypocalymma angustifolium, Melaleuca ? radula and Patersonia ? occidentalis.
After the area vegetated with rehabilitational species, the road verge is once again vegetated with
remnant native species for a distance of approximately 120 – 150 metres. Most of the area occupied
with remnant native vegetation is outside the area of future impacts from the construction of the passing
lane, although some of the opportunistic native species which are present in the road verge (likely to
have germinated in this area as a result of past disturbance, and more freely available water due to the
roadside drain beside the road), will need to be removed for construction of the passing lane. These
opportunistic native species present in the roadside drain area are Lepidosperma sp., Stylidium sp.,
Neurachne alopecuroidea and ? Casuarina obesa. The species present in the remnant native vegetation
are; Acacia pulchella, Allocasuarina fraseriana/huegeliana, Corymbia calophylla, Daviesia sp.1, Daviesia
sp. 2, Eucalyptus wandoo, Gastrolobium/Nemcia sp., Kennedia prostrata/carinata, Lepidosperma sp.,
Lomandra sp., Melaleuca rhaphiophylla/preissiana, Neurachne alopecuroidea and Phyllanthus calycinus.
Another small area of rehabilitation vegetation after this remnant native vegetation is present for
approximately 80 metres. There are a mix of native and rehabilitation species present in the road verge.
The species recorded as present are; Acacia drummondii, A. pulchella, Allocasuarina humilis, Banksia
grandis, Bossiaea ornata, Calothamnus quadrifidus, Corymbia calophylla, Dianella revoluta, Dryandra
polycephala, Eucalyptus marginata, E. wandoo, Hakea cristata/undulata, H. laurina and H. trifurcata.
As the Wooroloo Brook drainage line is approached (heading west down Toodyay Road), there are many
more individuals present of Banksia grandis, Callistemon sp., and Melaleuca rhaphiophylla (Swamp
Paperbark). Other species present are a mixture of remnant native species and rehabilitation species.
The following taxa are present; Acacia pulchella, A. saligna, Astroloma pallidum, Bossiaea ornata,
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Callistemon phoeniceus, Calothamnus quadrifidus, Corymbia calophylla, Dampiera ? lavandulacea,
Daviesia sp., Dryandra sp., Eucalyptus marginata, E. wandoo, Hakea lissocarpha/erinacea, H. prostrata,
Hypocalymma angustifolium, Juncus ? pallidus, Macrozamia riedlei, Orchidaceae sp., Pentapeltis
peltigera, Stypandra glauca, Trichocline spathulata and Xanthorrhoea preissii.
The opposite side of Toodyay Road (across from the side where construction works will be undertaken)
was also assessed to see if there were any intact areas of vegetation or flora species of conservation
significance present in the road reserve area. This side of Toodyay Road was mostly very degraded with
only few native species present, and the remainder of the area dominated by introduced annual and
perennial species. The native species present are Eucalyptus marginata, E. wandoo, Hakea prostrata,
Acacia pulchella and A. saligna. A minor drainage line draining into the Wooroloo Brook was vegetated
with Eucalyptus rudis over Typha domingensis and weed species (Eragrostis curvula and Schinus
terebinthifolia). Other native species present include; Acacia nervosa, Daviesia sp., Dianella revoluta,
Gastrolobium/Nemcia sp., Hypocalymma angustifolium, and Lepidosperma sp.
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GHD Pty Ltd
ABN 39 008 488 373
GHD House, 239 Adelaide Tce. Perth, WA 6004
P.O. Box Y3106, Perth WA 6832
T: 61 8 6222 8666 F: 61 8 6222 8555 E: permail@ghd.com.au
© GHD Pty Ltd 2005
This document is and shall remain the property of GHD Pty Ltd. The document may only be used for the
purposes for which it was commissioned and in accordance with the Terms of Engagement for the
commission. Unauthorised use of this document in any form whatsoever is prohibited.
Document Status
Rev
No.
Author
Reviewer
Approved for Issue
Name
Signature
Name
Signature
Date
0
M. Toner
A. Napier
A. Napier
1
M Toner
A Napier
A Napier
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Document Outline - 1. Introduction
- 1.1 Project Background
- 1.2 Scope of Work
- 1.3 Existing Documents
- 2. Environmental Assessment
- 2.1 Physical Environment
- 2.1.1 Landform and Soils
- 2.1.2 Surface Hydrology and Wetlands
- 2.2 Adjoining Landuse
- 2.3 Biological Environment
- 2.3.1 Vegetation of the General Area
- 2.3.2 Vegetation of the Proposed Overtaking Lanes, Truck Bay and Lilydale Pit
- 2.3.3 Threatened Ecological Communities
- 2.3.4 Flora
- 2.3.5 Introduced Species
- 2.3.6 Dieback and other Disease Risks
- 2.3.7 Fauna
- 2.3.8 Conservation Reserves
- 2.3.9 Greenways
- 2.4 Aboriginal Heritage
- 2.4.1 Archaeological and Ethnographic Sites
- 2.4.2 Native Title Issues
- 2.5 European Heritage
- 2.6 Consultation
- 2.6.1 Department of Conservation and Land Management (CALM)
- 2.6.2 Department of Environmental Protection (former) / Department of Environment
- 2.6.3 Heritage Council of Western Australia
- 3. Potential Environmental, Cultural and Social Constraints or Impacts
- 3.1 Biological Issues
- 3.1.1 Land Clearing
- 3.1.2 Impacts on Wetlands
- 3.1.3 Flora and Vegetation Protection
- 3.1.4 Fauna
- 3.2 Social and Cultural Issues
- 3.2.1 Access and Severance
- 3.2.2 European Heritage
- 3.2.3 Aboriginal Heritage
- 3.3 Construction Issues
- 3.3.1 Noise
- 3.3.2 Dilapidation
- 3.3.3 Dust
- 3.3.4 Protection of Water Quality
- 3.4 Road Operation and Use
- 3.4.1 Potential for Air Pollution
- 3.4.2 Traffic Noise
- 3.4.3 Runoff and Drainage Aspects
- 3.4.4 Visual Impact
- 4. Risk Assessment
- 4.1 MRWA Low Impact Environmental Screening
- 4.2 MRWA Environmental Aspects for Referral
- 5. Summary of Relevant Issues
- 6. Conclusion and Recommendations
- 7. References
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