Toodyay Road Passing Lanes
Toodyay Road Passing Lanes
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Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
Consultation Key Stakeholders identified during the PEIA and subsequent work include:
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; •
a dieback survey by an expert dieback interpreter; •
Vegetation – clearing of vegetation should be minimised and rehabilitation of construction disturbance carried out where appropriate; •
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.
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. 16 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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. 17
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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. 18 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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.
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 19
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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.
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. 20 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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.
This section identifies potential issues associated with the operation and use of the passing lanes.
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 :
there are no sensitive receptors within 200m of the road centre. 21 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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. 22
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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. 23 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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
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. 24 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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. 26 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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
Management, Perth, June 1991. CALM (1994). John Forrest National Park Management Plan 1994-2004. Report to
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
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 30
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Appendix A List of Rare Fauna Possible in the Project Area (2005) 31 61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
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.
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
area in question, either in open woodlands or around the quarries located in the area in question.
areas throughout this part of the Darling Scarp wherever remnant vegetation has been retained.
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.
the area in question in locations with low dense heath vegetation and jarrah and marri forest, particularly in riparian habitats.
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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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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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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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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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:
Two introduced species, which are potentially invasive environmental weeds in this section of proposed roadworks are Nerium oleander (Oleander) and Watsonia sp. (W. ? meriana).
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:
61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.,
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,
61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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.
61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update
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
A. Napier
A. Napier
1 M Toner A Napier
A Napier
61/16642/53945 Toodyay Road Passing Lanes Preliminary Environmental Impact Assessment - Update Document Outline
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