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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: 
March 6, 2019
Related EPA Media Statement: 
EPA recommends conditional approval for Onslow Marine Support Base Stage 2
Current Status: 
Ministerial Statement published
Ministerial Statement published
1. Referral
Comment on this referral: 
Onslow Marine Support Base Stage 2 Capital Dredging
Comment period: 
Thursday, 17 August, 2017 to Thursday, 24 August, 2017
Referral documentation: 
PDF icon Referral Form
PDF icon Environmental Review Document
PDF icon ERD_AppendixA_ENVID_Summary.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation_AppA-B.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation_AppC-F.pdf
PDF icon ERD_AppendixC_ShorelineImpactsAssessment.pdf
PDF icon ERD_AppendixD_SedimentQualityAssessment.pdf
PDF icon ERD_AppendixE_DredgingSpoilDisposalManagementPlanDRAFT.PDF
PDF icon ERD_AppendixF-G_StakeholderFeedback.pdf
2. Decision on whether to assess this proposal
Chair's Determination: 
Assess - Additional Assessment Information (public review)
Extract of determination: 
PDF icon Onslow Marine Support Base Stage 2: Capital Dredging
Preliminary Environmental Factors: 
Benthic Communities and Habitats
Coastal Processes
Marine Environmental Quality
Marine Fauna
Flora and Vegetation
Date published: 
Monday, 4 September, 2017
3. Assessment
Request for further information
Date: 
Monday, 13 November, 2017
File upload: 
PDF icon Environmental Review Document
PDF icon ERD_AppendixA_ENVID_Summary.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation.compressed.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation_AppA-B.compressed.pdf
PDF icon ERD_AppendixB_EcologicalSiteInvestigation_AppC-G.compressed.pdf
PDF icon ERD_AppendixC_ShorelineImpactsAssessment.compressed.pdf
PDF icon ERD_AppendixD_SedimentQualityAssessment.pdf
PDF icon ERD_AppendixE_DredgingSpoilDisposalManagementPlanDRAFT.PDF
PDF icon ERD_AppendixF-G_StakeholderFeedback.pdf
PDF icon ERD_AppendixH_WAFIC_CommercialFishersConsultation.pdf
4. EPA Report on assessment
EPA Report Number: 
1613
EPA Report: 
PDF icon EPA Report 1613 - Onslow Marine Support Base Stage 2: Capital Dredging
Proponent documents: 
PDF icon Onslow Marine Support Base Stage 2: Dredging & Spoil Disposal Management Plan
Key Environmental Factors: 
Benthic Communities and Habitats
Coastal Processes
Marine Environmental Quality
Marine Fauna
Flora and Vegetation
Date published: 
Monday, 5 February, 2018
Appeals close: 
Monday, 19 February, 2018
5. Decision on proposal and implementation of proposal
Ministerial Statement
Date of approval: 
Wednesday, 18 April, 2018
Ministerial Statement: 
PDF icon Ministerial Statement 1077.pdf
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: 
Wednesday, 6 March, 2019

Source URL:https://www.epa.wa.gov.au/proposals/onslow-marine-support-base-stage-2-capital-dredging