Onslow Marine Support Base Stage 2 Capital Dredging

Project
Proponent
Onslow Marine Support Base Pty Ltd
Proposal description

Onslow Marine Support Base Pty Ltd is proposing to modify and extend the Beadon Creek harbour approach channel, turning basin and berth pocket as part of Stage 2 of the Onslow Marine Support Base (OMSB) proposal.

The proposed capital dredging will enable offshore supply vessels to access the newly constructed OMSB land-backed wharf facility (Stage 1) within the Beadon Creek Maritime Facility.

930,000 cubic metres of dredge material will be disposed of onshore to a 44 hectare Dredge material Management Area (DMMA) adjacent to the Onslow airport. The material is proposed for future reuse to develop and extend the Light Industrial Area in Onslow. Dredge spoil return water will be released to the intertidal flats between the DMMA and the western tributary of Beadon Creek.

Assessment Number
2133
Region
Pilbara
Referred under EP Act
s38
Industry sector
Infrastructure
Last updated
Related EPA Media Statement
EPA recommends conditional approval for Onslow Marine Support Base Stage 2
Current Status
Ministerial Statement published
1. Referral
Comment on this referral
Onslow Marine Support Base Stage 2 Capital Dredging
Referral documentation
Referral Form (PDF, 2.61 MB)
Environmental Review Document (PDF, 2.98 MB)
ERD_AppendixA_ENVID_Summary.pdf (PDF, 593.09 KB)
ERD_AppendixB_EcologicalSiteInvestigation.pdf (PDF, 6.85 MB)
ERD_AppendixB_EcologicalSiteInvestigation_AppA-B.pdf (PDF, 7.52 MB)
ERD_AppendixB_EcologicalSiteInvestigation_AppC-F.pdf (PDF, 5.57 MB)
ERD_AppendixC_ShorelineImpactsAssessment.pdf (PDF, 7.46 MB)
ERD_AppendixD_SedimentQualityAssessment.pdf (PDF, 5.66 MB)
ERD_AppendixE_DredgingSpoilDisposalManagementPlanDRAFT.PDF (PDF, 3.01 MB)
ERD_AppendixF-G_StakeholderFeedback.pdf (PDF, 3.57 MB)
2. Decision on whether to assess this proposal
Chair's Determination
Assess - Additional Assessment Information (public review)
Extract of determination
Onslow Marine Support Base Stage 2: Capital Dredging (PDF, 165.67 KB)
Preliminary Environmental Factors
Benthic Communities and Habitats
Coastal Processes
Marine Environmental Quality
Marine Fauna
Flora and Vegetation
Date published
3. Assessment
Request for further information
Date
File upload
Environmental Review Document (PDF, 2.76 MB)
ERD_AppendixA_ENVID_Summary.pdf (PDF, 632.91 KB)
ERD_AppendixB_EcologicalSiteInvestigation.compressed.pdf (PDF, 4.49 MB)
ERD_AppendixB_EcologicalSiteInvestigation_AppA-B.compressed.pdf (PDF, 4.3 MB)
ERD_AppendixB_EcologicalSiteInvestigation_AppC-G.compressed.pdf (PDF, 3.17 MB)
ERD_AppendixC_ShorelineImpactsAssessment.compressed.pdf (PDF, 7.1 MB)
ERD_AppendixD_SedimentQualityAssessment.pdf (PDF, 5.86 MB)
ERD_AppendixE_DredgingSpoilDisposalManagementPlanDRAFT.PDF (PDF, 7.3 MB)
ERD_AppendixF-G_StakeholderFeedback.pdf (PDF, 3.58 MB)
ERD_AppendixH_WAFIC_CommercialFishersConsultation.pdf (PDF, 1.91 MB)
4. EPA Report on assessment
EPA Report Number
1613
EPA Report
EPA Report 1613 - Onslow Marine Support Base Stage 2: Capital Dredging (PDF, 6.88 MB)
Proponent documents
Onslow Marine Support Base Stage 2: Dredging & Spoil Disposal Management Plan (PDF, 2.48 MB)
Key Environmental Factors
Benthic Communities and Habitats
Coastal Processes
Marine Environmental Quality
Marine Fauna
Flora and Vegetation
Date published
Appeals close
5. Decision on proposal and implementation of proposal
Ministerial Statement
Date of approval
Ministerial Statement
Ministerial Statement 1077.pdf (PDF, 1.84 MB)
Post-assessment changes
s. 45C amendments

Attachment 1 to Statement 1077 - Changes:

  • Increase clearing by 4.5 hectares (ha) for the revised Dredge Material Management Area (DMMA);
  • Increase development envelope by 13.7 ha for the revised DMMA; and
  • Minor relocation of the DMMA dredge spoil return water discharge point.

Changes to proposal under s45C approved on 6 March 2019.

Date of approval s. 45C
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