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STRATEGIC MATERIAL AREA NORTH WEST COASTAL HIGHWAY

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This potential material area was identified as part of the region's strategic material plan and is located within Eurardy Station. Hovedveje initially proposes to expand part of the gravel reserve south of the existing cleared area (see Figure 2). Strategic Material Area SLK 145.6 is located within Eurardy Station, approximately 30 km north of the Murchison River.

The main roads propose an initial extension of part of the gravel reserve to the south of the existing cleared area (see Figure 2). This report details the environmental impact assessment findings for the project area as set out in Table 2. The Bureau of Meteorology weather recording stations closest to the strategic material area are Kalbarri and Murchison, between 10 and 107 km north and north-west. project sites.

The Department of Environment and Conservation (DEC, 2009b) has identified an ESA within 5 km of the proposed strategic material area. The EPBC Act Protected Matters Search Tool (Department of Environment, Water Heritage and the Arts 2008) did not identify any TEC near the project sites.

Table 1   Environmental and Social Aspects Considered Relevant
Table 1 Environmental and Social Aspects Considered Relevant

Fauna

Although TECs are not formally protected under the Wildlife Conservation Act 1950, the loss of, or disturbance to, some TECs triggers the EPBC Act. Searches of the DEC Threatened Fauna Database and the EPBC Act Protected Matters Search Tool were undertaken for the proposed strategic materials areas. Cockatoo DEC This species is sporadically distributed throughout arid and semi-arid Australia and can occur in

This species occurs in semi-arid scrub and forests of Shark Bay and the northern wheat belt, sheltered in hollow logs and behind the bark of fallen trees. DEC This species is in decline in its patchy distribution through the northern and central wheat belt. This species of native bee apparently depends on flowers of Goodeniaceae and possibly Lechenaultia stenosepala.

Lerista lineata Coated skink DEC This species is a small, slender skink that lives in white sand. Priority 3 Low Leipoa ocellata Malleefowl DEC. This species is distributed over much of mainland Australia and is found on several offshore islands.

Table 8   Threatened and Priority Fauna Likely to be Present in Proposed Project Areas
Table 8 Threatened and Priority Fauna Likely to be Present in Proposed Project Areas

Indigenous Heritage

Non-Indigenous Heritage

PROJECT IMPACTS AND MANAGEMENT

  • Aspects Considered Most Relevant for the Project Sites
  • Reserves and Conservation Areas
  • Groundwater
  • Flora and Vegetation .1 Proposed Clearing
  • Fauna
  • Indigenous Heritage
  • Non-Indigenous Heritage
  • Surrounding Land Use
  • Wetlands
  • Salinity
  • Acid Sulfate Soils
  • Diseases or Pathogens
  • Contaminated Sites
  • Air Quality and Dust
  • Noise and Vibrations
  • Visual Amenity
  • Public Safety and Risk

Since the project may conflict with some of the ten purification principles, further research is recommended. During a search of the DEC database, no TECs were identified in the vicinity of the project area. The uprooting of vegetation associated with the project is expected to be minimal due to the small amount of materials required annually.

No Aboriginal heritage sites have been identified near the project site, but it is possible that unregistered areas will be affected during the proposed works. No non-Indigenous heritage sites have been identified in the vicinity of the proposed material area. It is not expected that any of the proposed works would significantly affect heritage values.

The location of the project area can be considered susceptible to the development of the pathogen Phytophthora cinnamomi. Noise and vibrations during the construction phase are not expected to be a problem due to the lack of sensitive receptors in the vicinity of the project site.

REFERRAL AND FURTHER ACTIONS

Requirement for Referral

Further Actions

Given the proximity of the project site to the already registered population of priority flora and the vast area covered, the likelihood of priority flora occurring within the project site is relatively high. A flora survey will be carried out in late winter/spring to determine the presence of endangered flora species. Further studies will also be conducted to determine if other aspects will be affected as a result of the proposed material areas.

An endangered fauna, endangered fauna habitat assessment and endangered ecological community assessment will be undertaken at the same time as the flora surveys. Given the relatively weed-free condition of the project sites, extensive weed management strategies will be outlined in the EBP to help reduce the introduction of weed species into the project area and surrounding environments. Main Roads will undertake consultation with the appropriate representatives of the local Aboriginal community and Native Title Claimant Group to determine the level of impact on Aboriginal heritage as a result of the proposed project sites.

Given the long-term nature of the proposed projects, Main Roads suggests drafting a memorandum of understanding between them and the appropriate group of property rights beneficiaries. It is proposed that this Memorandum of Understanding will provide that the Main Roads will authorize the appropriate Native Title Beneficiary Group to conduct heritage soil surveys prior to any land encroachment within their claim boundary.

Environmental Protection of Native Vegetation in Western Australia; Clearing of native vegetation, with particular reference to the agricultural area. Available online at www.heritage.wa.gov.au at Mitchell, A. 1994) Arid Shrubland Plants of Western Australia, Second and Enlarged Edition.

Environmental Impact Assessment Appendices

STRATEGIC MATERIAL AREA NORTH WEST COASTAL HIGHWAY

SLK 145.6

Printed copies are uncontrolled unless marked otherwise

APPENDICES

APPENDIX A

Project Site Photos

APPENDIX B

Consultation

Mr Andrew Watson, Soil and Land Conservation Commissioner - Office of the Soil and Land Conservation Commissioner at the Department of Agriculture and Food. The clearing of such land in the agricultural area of ​​the south has caused both erosion and salinization. It is unlikely that such soil degradation would occur as a result of the proposed gravel extraction and gradual remediation.

In the landscaping and rehabilitation works, care must be taken to establish safe bats and ensure that run-off does not attract pond and grazing animals, including goats, to the site.

APPENDIX C

DEC’s Rare and Priority Flora Database Search

APPENDIX D

DEC’s Rare and Priority Fauna Database Searches

APPENDIX E

Department of Environment, Water, Heritage and the Arts Database Search

APPENDIX F

Australian Heritage Places Inventory, Heritage Council of Western Australia and the Municipal Heritage Inventory

APPENIDX G

Department of Indigenous Affairs Database Search

Main Roads WA – Revegetation Plan for Pastoral Areas

Site Preparation: All vegetation will be cleared from the work area and vegetation that is not infested with weeds will be stockpiled. Accumulated vegetation will be positioned in a manner that will prevent damage to adjacent vegetation by machinery. Vegetation infested with weeds will be disposed of in an appropriate location and will not be used for re-vegetation purposes.

Topsoil will be stripped to a maximum depth of 100mm, and will be stored in a weed-free (as far as possible) area, as close as possible to the area to be rehabilitated. Weed control: Appropriate weed control will be carried out when weeds are present, both before topsoil stripping and where weeds are established on or between the piled material. Where practicable, weeds will be removed before or when they are in flower, and before sowing.

Where works are adjacent to good quality vegetation where weeds from within the project area are likely to spread and result in environmental damage to the adjacent area, those weeds will be controlled annually by 12 December 2010 .Project areas will be blasted to a minimum depth of 200mm deep with tear lines approximately 300mm apart. Depending on the slope of the drainage lines within the pit, small ridges will be formed from the topsoil to reduce the rate of erosion and promote seed deposition.

The entire existing pit floor, including drain lines, will be ripped to a depth of 300-500 mm with rip lines between 500-800 mm (if the material in the pit can be ripped). All accumulated vegetation will be spread along the contour and pit bottom to help promote seed deposition and reduce erosion rates. After the planting work, replanted areas are inspected annually for a minimum of two years to monitor and control weeds and to measure the effectiveness of the planting work.

When unwanted weed cover exceeds 25% after the initial two-year period, further measures will be taken to monitor and control these weeds. Additional monitoring and weed control will be carried out every year until 12/12/2010, or until unwanted weed coverage falls below 25%, whichever occurs first. Post-remediation site inspections will be conducted annually for at least two years to monitor unwanted weeds and measure the effectiveness of the remediation work.

Vegetation Clearing Assessment Report

MRWA Vegetation Clearing Assessment Report

Property details

Area under assessment

Avoidance/Minimise clearing

Existing environment and information

ASSESSMENT OF APPLICATION AGAINST CLEAR PRINCIPLES. a) Native vegetation should not be cleared if it contains a high level of biological diversity.

Planning instrument, Native Title, RIWI Act Licence, EP Act Licence, Works Approval, Previous EPA decision or other matter

Regional-scale geological mapping indicates that the well extension will be located on the Northampton block geology. Rehabilitation will be undertaken using the Main Roads Reforestation Plan for Pastoral Regions, which has been approved by DEC. Soil erosion will be managed through the implementation of Main Roads Corporate Procedure Environmental Guideline – Pits and Quarries.

Bush Heritage Australia has expressed concern about the deficiencies in the scientific knowledge on which the GHD opinions in the Flora and Fauna Report (GHD, 2009) are based. The vegetation types in the Project area are common to the area around Eurardy. Similar faunal habitats are also present in Kalbarri National Park, which is 5 km from the project site.

Given the high percentage of similar animal habitats in the areas surrounding the project area, it is unlikely that the clearing of 4.5 ha of native vegetation would be contrary to this principle. Under condition 5(a)(iii) of CPS818/4 MRWA must submit for approval a management strategy developed in consultation with the Soil and Land Conservation Commissioner. Pursuant to condition 5(a)(ii) and 9(c) of CPS818/4, the MRWA must submit an offset proposal for approval.

The offset proposal will be submitted to the DEC Executive Director for approval to mitigate impacts to clearing principle (a) and (c). Further consultation with the Soil and Land Conservation Commissioner indicated that the clearing was unlikely to result in significant soil degradation. Therefore, we believe that the clearing of native vegetation is unlikely to conflict with the clearing principle (g).

Suggestion to use cleared vegetation and immediately remove topsoil when restoring previously cleared sites. Revegetation of new and previously cleared areas will be conducted in accordance with the Main Roads Pastoral Region Reforestation Plan approved by DEC. An Environmental Management Plan has been developed for this proposal. 1976) Vegetation survey of Western Australia: the vegetation of the Ajana area, Western Australia.

OFFICER PREPARING REPORT

Figure

Table 1   Environmental and Social Aspects Considered Relevant
Table 2  Key features of the Proposed Strategic Material Areas
Table 3  Climate Readings at Closest Weather Stations (Bureau of Meteorology, 2009)
Table 4  Vegetation Communities likely to be present in each of the Project Sites (Beard, 1975)
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References

Related documents

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