Executive Summary - Interactive Investor

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Executive Summary - Interactive Investor

...........................................................................Executive Summary...........................................................................


Executive SummaryMain Roads Western Australia (Main Roads) proposes to extend Roe Highwayapproximately five kilometres from its current terminus at Kwinana Freeway inJandakot to Stock Road in Coolbellup. In August 2009, Main Roads (the proponent)and industry partner, AECOM Australia, formed the South Metro Connect (SMC)alliance. The team was created for the development phase of the Roe HighwayExtension project (the proposed project). Its primary objective is to workcollaboratively with specialist consultants, stakeholders, and regulatory authorities todevelop an environmentally, socially and economically acceptable project design inorder to obtain relevant statutory approvals.The proposed project will consist of a dual carriageway with two lanes in eachdirection; separated by a concrete barrier in place of a median strip. The preferreddesign was selected following an extensive options analysis and consultative process.During this process, project objectives; as well as specific environmental, social andeconomic criteria were examined. Once selected, the preferred option was modifiedto avoid and minimise impacts on several environmental factors.Environmental principles have been applied throughout the project developmentprocess. Findings from surveys, studies, reviews and stakeholder and communityengagement were used to inform options analyses and the identification of impactsand mitigations. The engagement programme was designed to encourage input andinvolvement from community members, stakeholders and interest grouprepresentatives through a variety of engagement activities including communityinformation days, design workshops, a project shop front, a telephone hotline, onlineforums, a project website, email updates and newspaper publications.ProposalThe proposed project is located approximately 14km south of Perth within the SwanCoastal Plain Bioregion. The project area is contained within the City of Cockburn;however, parts of the design extend northward into the City of Melville along MurdochDrive and Kwinana Freeway. Generally, the proposed project is orientated east-westlargely within a road reserve that was set aside in the Metropolitan Region Scheme in1963. It aligns between North and Bibra lakes, which are part of the Eastern Chain ofthe Beeliar Wetlands.i


The proposed project includes modifications to Stock Road, Sudlow Road, CoolbellupAvenue, North Lake Road, Progress Drive, Hope Road, Bibra Drive, Murdoch Drive,Pausin Crescent, Kwinana Freeway and Karel Avenue to accommodate the proposeddevelopment and anticipated traffic flow. Access from the proposed project will beprovided at four major interchanges with Roe Highway – Stock Road, North LakeRoad, Murdoch Drive (to and from the Murdoch Activity Centre) and KwinanaFreeway. Other major components of the proposed project include:Principal Shared Path along the length of the proposed project;Elevated structures over Progress Drive, between North and Bibra lakes and at RoeSwamp;Removal and rehabilitation of a section of Hope Road west of the CockburnWetlands Education Centre, Native Animal Rehabilitation Centre (ARC) andprovision of a recreational car park;Bioretention basins to retain and treat runoff from the proposed project, as well asother stormwater basins;Pedestrian and fauna underpasses; andReplacement of power transmission infrastructure.Assessment CharacteristicsThe project area supports environmental values that are relevant to the StateEnvironmental Protection Authority (EPA) and Commonwealth Department ofSustainability, Environment, Water, Population and Communities (DSEWPaC).Accordingly, the proposal was referred to the EPA in March 2009; and DSEWPaC(formerly Department of Environment, Water, Heritage and the Arts) in July 2009.In 2003, pursuant to Section 16(j) of the ( ),the EPA advised that key environmental values identified as being associated with theconstruction of the proposed project relate to wetlands, vegetation, fauna, ecologicallinkages, Aboriginal heritage, residential amenity [noise], recreation and education(EPA 2003). Commonwealth Matters of National Environmental Significance (NES)listed under thefor the project area were initially identified through the DSEWPaC search tool asfollows:Three Wetlands of International Significance (south of the project area);Forest Red-tailed, Baudin’s and Carnaby’s black cockatoos;Graceful Sun-moth;Three mammals: Chuditch, Red-tailed Phascogale and Quokka;Three plant species: King Spider-orchid, Muchea Bell and Beaked Lepidosperma;Migratory terrestrial birds: White-bellied Sea-Eagle and Rainbow Bee-eater;Migratory wetland and marine species: Great and Cattle egrets and Fork-tailedSwift.ii


In November 2009, the proposal was assigned a Public Environmental Review (PER)level of assessment under the provisions of Part IV of the An EnvironmentalScoping Document was developed by SMC and approved by the EPA in June 2010.This PER has been prepared in accordance with the(EPA 2009a)and the(EPA 2002a). It has been authorised for public release by the EPA and will bereleased for a 12-week public review period. Hard copies of the PER will be availableat the following locations during the comment period (commencing June 2011):EPA Library / reading roomJS Battye LibraryState LibraryCity of Cockburn LibraryCity of Melville LibraryCity of Fremantle LibrarySpearwood LibraryCoolbellup LibrarySuccess LibraryDigital copies can be accessed via the SMC website:http://www.southmetroconnect.com.au/The closing date for comment submissions to the EPA is 5 th September 2011.Upon receipt of SMC’s response to public comments, the proposal will be assessed bythe State EPA and Commonwealth DSEWPaC. The State and CommonwealthMinisters will issue separate decisions.Purpose of PERThe PER describes the existing environment and outlines potential, predicted andresidual impacts arising from the proposed project. It also proposes management andmitigation measures for significant impacts, in line with relevant EPA position andguidance statements. The purpose of this PER document is to:Provide sufficient context for the proposed project with regard to its relevance tothe planning and development requirements for the State;Place the proposal in the context of the local and regional environment;Describe the components of the proposal adequately, so that the State andCommonwealth Ministers can consider approval of a well-defined project;Define clearly the likely impacts of the project;Outline the proposed management measures and commit to managementoutcomes to ensure that environmental and socio-economic impacts will beminimised;iii


Communicate clearly with stakeholders so that the EPA and DSEWPaC can obtaininformed comment to assist in providing advice to government; andProvide a document that clearly sets out the reasons why the proposed project canbe judged to be environmentally acceptable by the EPA, DSEWPaC and theirMinisters, as well as by other stakeholders.Background and BenefitsRoe Highway was originally planned to form part of Perth’s strategic ring roadnetwork. In 1963, the alignment for the proposed project was set aside as aControlled Access Highway in the Perth Metropolitan Region Scheme (MRS). Thehighway was designed to connect Fremantle Port with the Kewdale, Welshpool andCanning Vale industrial areas; as well as major transport corridors including the GreatNorthern, Great Eastern, Tonkin and Albany Highways. Roe Highway has beenconstructed in stages from Midland to Kwinana Freeway over the last 29 years, withStage 1 beginning in 1981.Roe Highway Stage 7 was completed in 2006 and presently terminates at KwinanaFreeway. Subsequent to the State Government’s commitment, the Roe HighwayStrategic Review concluded that the proposed project is required to support ongoingdevelopment and to ease traffic congestion (GHD and Meyrick 2009). This isconsistent with the findings of most related previous studies. The GHD and Meyrickstudy (2009) supports the MRS alignment and found that the proposed project isrequired for the following key reasons, among others:To increase efficiency of freight movements to and from key generators and theFremantle Port;To reduce air pollution through the removal of stop and start operations at trafficsignals and by reducing travel times;To increase safety of the road network through the reduction of heavy vehicles oninteractive streets (streets with multiple access points and residential and retaildevelopments); andTo reduce traffic volume along the already congested Leach Highway and SouthStreet.JustificationThe proposed project is being developed to accommodate Perth’s forecast urban andindustrial growth to 2031. Within a local context, the City of Cockburn population ispredicted to increase by 44 percent by year 2031; while the number of dwellings isforecast to increase by 53 percent. The population of the Perth Metropolitan and Peelregions is expected to grow by approximately 35 percent to reach more than 2.2million by 2031.The project area is located within a region identified for key growth over the next 20years. In the short term, the proposed project will support a growing number offreight vehicles utilising the Fremantle Inner Harbour and other local industrial areas.In the long term, it will provide the necessary infrastructure for businesses to operateeffectively, which is crucial for stimulating and supporting economic growth of thePerth southern metropolitan region.iv


Present and proposed development in the region is expected to provide thousands ofemployment opportunities. Several ongoing and planned development areas for thesouthern metropolitan region include:Kwinana Industrial Area;Australian Marine Complex;Latitude 32 Industrial Area;Fremantle Outer Harbour (Kwinana Quay); andJames Point Private Port.The Murdoch Activity Centre (MAC) further underscores the need for the proposedproject. It will be an important centre for growth in the area, which is anticipated toemploy thousands of people. The MAC will include developments such as the FionaStanley Hospital and supporting commercial development, education providers andoffice space. At present, there is no access to MAC from north bound traffic on theKwinana Freeway, except via South Street, which is already heavily congested.Connection with the proposed project would improve traffic efficiency, reducecongestion on South Street and provide efficient access to the MAC.The proposed project is expected to convey an average of 60,000 vehicles per day by2031, which would otherwise be using local roads. The proposed project will providea route designed for the safe and efficient movement of more than 6,000 heavyvehicles a day. Without the proposed project these vehicles would have to beaccommodated elsewhere in the network along less desirable routes.Justification for the proposed project has been reviewed in numerous reports, themajority of which conclude that the proposed project is required to ease congestion.The strategic rationale for constructing the proposed project determined thatmanaging the existing network without the proposed project (the no-build option)would not adequately satisfy key freight requirements, thereby jeopardising safety,local air amenity and efficiency.Several previous studies have investigated alternative routes, albeit few in the contextof a completed Roe Highway Stage 7. Those that have been prepared sincecompletion of Roe Highway Stage 7 generally work on the assumption that RoeHighway will not be constructed beyond Kwinana Freeway, but do not recommendviable alternatives to address forecast traffic volumes and anticipated trafficcongestion.A road network assessment that considers the forecast performance of thesurrounding road network in 2021 (SMC 2011) concluded that the no-build scenariowould have a significant impact on network performance, and a southern link to theMurdoch Activity Centre would be required to overcome these issues to some extent.v


Impact Avoidance during Project Planning and DevelopmentEnvironmental, social, economic and governance constraints were identified throughextensive and detailed consultation and studies of biophysical and landscapecondition. Design options for the proposed project were selected based on avoidanceand minimisation of environmental and social impacts on key values; as well asbudgetary considerations. The proposed project is designed to avoid the resumptionof private property. Bridges, retaining walls, construction methodology, horizontaland vertical alignment and reconfiguration and relocation of interchanges wereincorporated into the project design to avoid and minimise impacts on environmentaland heritage values. These values include the following key environmental factors:Intact native vegetation;Significant fauna habitat;Ecological linkages; andWetlands.Environmental AssessmentThe Environmental Scoping Document outlined studies and investigations that wererequired to assess impacts of the proposed project. It has been determined thatenvironmental impacts on many of the environmental factors will be managed andmitigated to eliminate or reduce the potential impact. However, four keyenvironmental factors will require offsets to mitigate effectively. The environmentalassessment includes factors that are relevant to both the State and Commonwealthgovernments.A review of Bulletin 1088 (EPA 2003), development of the ESD (SMC 2010) andevaluation of environmental study results has established and confirmed that thereare several key environmental biophysical factors requiring assessment andmanagement: flora/vegetation, Conservation Category wetlands (CCW), conservationsignificant fauna and ecological linkages. Specific impacts on these key issues arepresented below.Wetlands including groundwater dependent ecosystemsThe proposed project will have an impact on CCWs and minor impacts on LakesEnvironment Protection Policy (EPP). The identified areas of mapped wetland affectedby the proposed project include:Bibra Lake –1.0ha out of 138ha total mapped Lakes EPP wetland;Horse Paddock Swamp – 0.2ha out of 3.2ha total mapped CCW boundary; andRoe Swamp – 5.6ha (temporary and permanent clearing) out of 53.7ha totalmapped CCW boundary.vi


Although approximately 1.0ha of the proposed development is within the Bibra LakeEPP boundary, the mapped wetland in this area is shown to have limited ecologicalvalue. The intersection of the proposed project with the EPP boundary is immediatelyadjacent to the existing Hope Road. Vegetation in the area has been assessed as‘Completely Degraded’. Likewise, Horse Paddock Swamp also currently has limitedecological value as it is predominantly devoid of native vegetation and is assessed as‘Completely Degraded’. There is no anticipated loss or reduction in current wetlandvalue or function of Horse Paddock Swamp due to the proposed project. Workstowards the restoration of Horse Paddock Swamp are planned as an offset.The attributes, functionality and values exhibited by Roe Swamp and surroundingsumplands (i.e. Lower, Melaleuca and Roe swamps) are assessed as beingcommensurate with those of a CCW. An area of approximately 5.1ha of the mappedCCW of Roe Swamp will be occupied by the proposed project. With the relocation ofMurdoch Drain, Roe Swamp CCW will incur a temporary impact of approximately0.5ha. The inclusion of a 50m buffer (i.e. Environmentally Sensitive Area) around RoeSwamp includes unvegetated areas that are developed and/or contain degradedhabitat on the east side of Roe Swamp and vegetation in good condition on the west.Roe Swamp is an integral part of the linked hydrological, geomorphic and ecologicalsystems within the eastern low hollows of the Bassendean Dunes that drains towardsNorth and Bibra lakes. Roe Swamp has demonstrated resilience to existing pressuresas evidenced by the ongoing functionality of the swamp despite fragmentation causedby Farrington Road, Hope Road and the power transmission line. As it is a prerequisitefor development of an east-west corridor, the proposal is to cross a sectionof the wetland. However, the proposed project avoids the main swampland of RoeSwamp, which is located in the south-east portion of the larger Roe Swamp and, indoing so, also avoids intersection of known good quality black cockatoo foraginghabitat.The maintenance of the water cycle is essential to the continued long-term function ofRoe Swamp. This will be achieved by the provision of a bridge that spans asignificant extent of very good condition vegetation within Roe Swamp to avoid theimpedance of surface and near surface water conveyance along the topographic lowpoint of the catchment. The relocation of a shallow replication of the existingMurdoch Drain will also assist in the regard.Of a total of 79ha of native vegetation to be cleared, approximately 13ha ofgroundwater dependent ecosystem (GDE) sub communities will be cleared for theproposed project. This represents approximately five percent of the area covered byGDE sub communities within the GDE study area.vii


A combination of bioretention and infiltration basins will be used through the projectarea. Where the basins are located close to wetlands, the basins incorporate abioretention section within the infiltration basins. A large bioretention basin (1.7ha) isproposed east of Horse Paddock Swamp at Hope Road. The Hope Road basin will beplanted with native wetland species and existing vegetation along with a natural filtermedium, which will filter the water prior to its entry into the superficial aquifer.Although localised water mounding will occur below the basins, it will not disruptregional groundwater regimes, relative to inter-annual and typical seasonal effects.The bioretention basin will ultimately take the form of a natural wetland systemfunctioning to improve water quality and provide wetland habitat. These basins arepresented as part of the mitigation package for impacts on wetland values.It is further proposed that impacts on Roe Swamp CCW are mitigated through theallocation of funding for the restoration of Horse Paddock Swamp, which is assessedas having ‘completely degraded’ vegetation condition rating. Coordination with DECwill be required due to Horse Paddock Swamp’s status as a CCW and Lakes EPPwetland. Adjacent uplands (‘completely degraded’ condition) are also proposed forrestoration with appropriate native vegetation to create an upland/wetland interfacethat will serve as habitat for resident fauna.Flora and VegetationProject construction will require the removal of up to 79.3ha of remnant nativevegetation, of which approximately 38ha can be rehabilitated at completion ofconstruction. Approximately 37.5ha of the native vegetation due for removal (47%)has been identified as in ‘degraded to good’ condition or better (i.e., considered to beintact remnant native vegetation). The remaining 41.8ha consists of areas that havebeen previously cleared or are void (or almost so) of native vegetation.Seven hectares of Bush Forever Site 244 occurs within the construction footprint ofthe proposed project. Clearing of this area will include the removal of 4ha of intactnative vegetation within the Bush Forever Site.A total of 15 sub-populations of Priority Flora, consisting of approximately7,000 individual plants will be impacted by the proposed clearing. Most of therecorded Priority Flora plants within the proposed clearing footprint are(Priority 1), a small herb species that is locally abundant.Potential impacts associated with vegetation loss include increased stress on the localbiodiversity and reduced availability of terrestrial fauna habitat.Minimal vegetation impacts due to fragmentation, edge effects and associated weedinvasion, shading and altered hydrology are predicted, with the first three effectpathways already existing widely across the project area. If managed appropriately,these impacts will be reduced to low levels or totally eliminated. The risk of fire andintroduction of dieback disease to the project area will be managed through thedevelopment and implementation of a Construction Environmental Management Planto impose conditions on the movement and operation of plant and machinery.viii


FaunaClearing of vegetation and the installation of drainage basins will result in the loss ofup to 112ha of fauna habitat. This includes 40ha (36 percent) of /woodland, 26ha (23 percent) of / woodland and 13ha (12percent) of other native remnant vegetation. The clearing includes 20ha (17 percent)of various other woodland types, rehabilitated vegetation, parklands and roadsideverges that provide fauna habitat. The remaining clearing is of areas that hold littlevalue for fauna, in particular 13ha (12 percent) of ‘degraded’ condition vegetationwith low value habitat.Habitat for three recorded Commonwealth and State conservation significant faunaspecies will be removed within the project area: Carnaby’s Black Cockatoo; ForestRed-tailed Black Cockatoo; and Graceful Sun-moth. Additionally, habitat for tworecorded State conservation significant species is expected to be removed within theproject area: Southern Brown Bandicoot and Perth Lined Lerista. Habitat for theBlack-striped Snake will also be removed; however, this species was not recordedduring recent project surveys, but may potentially occur within the project area.Approximately 78ha and 73ha of foraging habitat for the Carnaby’s and Forest RedtailedBlack Cockatoos, respectively, will be affected by the proposed project. Also,249 significant trees (which have a diameter at breast height greater than 500mm)will be removed; 20 of which contain hollows that could potentially be used fornesting by black cockatoos and other bird species. Neither actual cockatoo nestingnor roosting sites are known to occur within the project area.In addition to the impacts that were avoided during the development of the projectdesign, the following mitigation measures will be implemented:Install artificial nesting hollows to replace lost potential nesting hollows for wetlandbirds; andRehabilitate cleared areas on completion of works with appropriate foraging foodspecies, including Marri, Jarrah and species, where possible.Graceful Sun-moth habitat has been categorised into confirmed – where adults havebeen collected; suitable – where its host plant,has beenrecorded; and potential – vegetation communities that are known to contain.Of the 8.7ha of confirmed Graceful Sun-moth habitat, 5.6ha (64 percent) will beaffected by the proposed project. The removal of approximately 1,100 recordedindividual plants (34 percent of those recorded) will result in the loss of suitablehabitat. Approximately 60.5ha (48 percent) of potential habitat will be removed,excluding the confirmed habitat above (8.7ha). Confirmed Graceful Sun-moth habitatwas based on the collection of six adults in 2010 and five adults in a March 2011survey.ix


Besides the Graceful Sun-moth, six out of eight additional conservation significantinvertebrates identified during database searches could potentially occur within theproject area, as suitable habitat exists for these species. The six potentially occurringspecies include a scorpion fly, two native bees, a butterfly and two crickets. The scaleof habitat loss within the project area is expected to be higher for:.;; andOne SRE species recorded in the project area, an unidentified sucking millipede( .), may be of conservation significance. However, further taxonomicreview of this species is required. A single specimen was collected from/ habitat in the north-east quadrant of the Stock Road/Forrest Roadintersection. Vegetation clearing will result in the removal of habitat from its onlyknown location within the project area. Positive identification of this species isunderway, so its specific habitat requirements are unclear. Consequently, the extentof habitat loss cannot be calculated at this time; and the scale of impact by theproposed project has yet to be determined.With the exception of the unidentified., project impacts of habitat lossand fragmentation on invertebrates are negligible to minor.Habitat loss and fragmentation pose the most significant risks to the Southern BrownBandicoot by the proposed project. Key habitat within the project area is representedby / woodland, / woodland and/ woodland. Vegetation clearing will result in a loss ofapproximately 73ha of available Southern Brown Bandicoot habitat.The risk of Southern Brown Bandicoot deaths as a result of construction activities andhighway traffic will be minimised through the installation of fencing within habitableareas and the implementation of a trapping and relocation programme prior tocommencement of clearing activities.Southern Brown Bandicoot habitat fragmentation can lead to isolation of populationsand reduction in population viability. Movement between sub-populations within thestudy area appears limited; therefore, impacts of the proposed project are likely to belocalised.The Perth Lined Lerista is a skink recorded within and adjacent to the project areaduring project and previous surveys. Suitable habitat for this species existsthroughout the project area, except for areas with peaty silt soils in and around RoeSwamp, Horse Paddock Swamp and Murdoch Drain. Habitat loss and fragmentationpose the highest risks to the Perth Lined Lerista by the proposed project. Within theproject area, vegetation clearing will result in a loss of approximately 91ha of availablehabitat for this species.x


The Black-striped Snake was not recorded in the project area but may occur aspotential habitat exists and individuals have been previously recorded at nearbyJandakot Airport (Bamford 2002). The Black-striped Snake may potentiallyutilise woodland associated with pale sandy soils. Approximately 43ha ofpotential habitat will be affected by the proposed project.Revegetation of 52ha of fauna habitat, including rehabilitation of 38ha of clearednative vegetation and restoration of an additional 14ha of currently degraded land,will replace some of the lost habitat. Other general management and mitigationmeasures that will be undertaken to minimise impacts on habitat loss for faunaincludes:Replacing ground habitat features, such as fallen logs, top soil and leaf wherehabitat loss or degradation occurs;Rehabilitating cleared areas on completion of works where possible;Delineating the extent of clearing through the installation of fencing at theboundaries of the construction zone and tagging specific trees for retention;Avoiding clearing or disturbance outside the defined project footprint boundaries;Minimising damage to surrounding wetland habitats (shoreline) outside the projectfootprint during construction, by fencing or clearly delineating construction siteboundaries; andRevegetating available parts of Horse Paddock Swamp and Roe Swamp disturbedby the project.Other At-Risk SpeciesAlthough not considered State or Commonwealth conservation significant, thesespecies (birds, reptiles and one mammal) contribute to the biodiversity of the projectarea. Ten regionally significant bird species defined in Bush Forever and recordedwithin the study area are considered to be at risk.Fairy-wrens and thornbills are two groups of concern that have previously declined invarious locations across the Perth metropolitan region. Among other bird species, theSplendid Fairy-wren, White-browed Scrubwren, Western Thornbill and GreyShrikethrush have been identified as some of the sedentary (resident), insectivorousspecies that are declining on the Swan Coastal Plain. The Western Thornbill, inparticular, is considered a habitat specialist and is limited in resources, dispersal, areaand process within the Swan Coastal Plain. Additional at-risk species include theCommon Brushtail Possum, South-western Crevice Skink, Western Bearded Dragon,West Coast Ctenotus and other small fossorial reptiles.Ecological LinkagesHistorical fragmentation associated with urban encroachment (i.e. housing and roads)has already resulted in the fragmentation of the existing environment of the projectarea. The project design has been developed to ensure connectivity between thenorth and south sides of the proposed project is maintained through the inclusion ofbridges and fauna underpasses in areas not already severed by existing infrastructure.Linkages either side of North Lake Road, Sudlow Road/Coolbellup Drive and StockRoad will be improved through the grade separation of the proposed project andinclusion of apertures under these roads for fauna movement.xi


Most plant species do not critically depend on physical linkages with other habitatpatches in the short term (Bennett and Mulongoy 2006). Rather, their long-termsurvival depends more upon having the opportunity to move progeny, via pollen andseed dispersal, to other habitat patches in response to flooding, fire or other periodicnatural disturbances. Therefore, ecological linkages are considered largely in thecontext of fauna connectivity.Six regional and local ecological linkages were identified within the project area. Afterthe consideration of historical fragmentation and the incorporation of project designelements, the proposed project will partly affect one regional and two local ecologicallinkages: EL1, EL5 and EL6.EL1 is located at a ‘squeeze’ point where the proposed project intersects SudlowRoad, Coolbellup Avenue and Forest Road. These existing roads already affect thiseast-west fauna connection, and the grade separation of these roads and alignmentof Roe Highway underneath them will enable connectivity to be re-establishedbetween habitats on either side.The proposed project will cause an intermittent fragmentation to local linkages EL5and EL6. Proposed bridges will mitigate the main conveyance portions of theselinkages and fauna underpasses and culverts will provide north-south passageways fora range of ground-dwelling and aquatic species. The continuance of north-southlinkage for EL5 and EL6 equates to maintenance of processes for local connectivity.EL4, as a regional linkage that is already heavily fragmented by roads such asFarrington Road, Hope Road and Bibra Drive, is not considered to be significantlyimpacted by the proposed project.Other Environmental FactorsIn addition to the key factors, environmental impact assessment has been conductedfor the following factors and impact mechanisms:Acid Sulfate Soils;Sources of Potential Contaminants;Aboriginal Heritage;Noise;Recreation and Education;Air Quality;Visual Amenity; andGreenhouse Gases.Impacts on these matters will be mitigated or managed to a reduced level within theproject area in compliance with applicable legislation as shown in Section 4.xii


Matters of National Environmental SignificanceDiscussions of Matters of National Environmental Significance (NES) have beenintegrated with environmental factors relevant to the State and are presented above.The controlling provisions under the are listed threatened species and listedmigratory species. No other matter of NES applies to this impact assessment. Theclosest Ramsar site (i.e. Thomsons Lake) is located 7km south of the project area.Section 8 of this PER has been developed for DSEWPaC and stakeholder review. Itcontains a complete summary of the existing environment and impact assessment forMatters of NES that were initially identified by an Protected Matters Report.As discussed above, the following Matters of NES will be affected by the proposedproject:Carnaby’s Black Cockatoo – endangered;Forest Red-tailed Black Cockatoo – vulnerable; andGraceful Sun-moth – endangered.Several migratory and wetland birds will potentially be subject to impacts by theproposed project. These include Rainbow Bee-eater, Glossy Ibis, Eastern Osprey,Eastern Great Egret and Cattle Egret.The majority of management strategies available are adequate to manage risks andmitigate the impacts of the proposed project on Wetlands and GroundwaterDependent Ecosystems. For detail, see Section 6.2 and Section 7.Table i describes residual impacts where management and mitigations are notsufficient to reduce or remove a predicted impact. Also outlined are commitments toenvironmental outcomes. Offsets are proposed for project impacts that do notachieve a satisfactory outcome.xiii

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