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Mackay Sulphate of Potash Project

Project
Proponent: 
Agrimin Limited
Proposal description: 

The Proposal involves the development of a greenfields Sulphate of Potash fertiliser operation which is currently designed to operate for a 20-year period.

The Proposal involves the on-lake development of trenches and solar evaporation ponds for brine extraction and Sulphate of Potash production. The off-lake development includes a processing plant, associated site infrastructure and access roads for trucking Sulphate of Potash product to Wyndham Port.

A northern linear access corridor will include the primary site access road, and potentially a water supply pipeline. A southern infrastructure corridor may be used as an alternate water supply option.

The Proposal is located within Western Australia at Lake Mackay on the border with the Northern Territory, 600 km west of Alice Springs and approximately 1000 km south of Halls Creek by road.

Assessment Number: 
2193
Region: 
Pilbara
Referred under EP Act: 
s38
Industry sector: 
Salt
Last updated: 
December 10, 2024
Current Status: 
EPA Report and Recommendations released - appeals open
1. Referral
Comment on this referral: 
Mackay Sulphate of Potash Project
Comment period: 
Tuesday, 15 January, 2019 to Monday, 21 January, 2019
Referral documentation: 
PDF icon Referral Form
PDF icon Supplementary Report
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 1.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 2.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 3.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 4.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 5.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 6.pdf
PDF icon App A.1_Lvl1 Fauna and Single Ph Lvl 2 Flora and Veg Survey Vol 7.pdf
PDF icon App A.2_Detailed Flora and Veg Assessment Vol 1.pdf
PDF icon App A.2_Detailed Flora and Veg Assessment Vol 2.pdf
PDF icon App A.2_Detailed Flora and Veg Assessment Vol 3.pdf
PDF icon App A.3_Detailed Flora and Veg Assessment at Lake Mackay Vol 1.pdf
PDF icon App A.3_Detailed Flora and Veg Assessment at Lake Mackay Vol 2.pdf
PDF icon App A.3_Detailed Flora and Veg Assessment at Lake Mackay Vol 3.pdf
PDF icon App A.4_Vertebrate Fauna and Flora Risk Assessment.pdf
PDF icon App B.1_Kiwirrkurra Indigenous Protected Area Bushblitz Survey.pdf
PDF icon App B.2_Single Ph Lvl 2 Fauna Survey at Lake Mackay Vol 1.pdf
PDF icon App B.2_Single Ph Lvl 2 Fauna Survey at Lake Mackay Vol 2.pdf
PDF icon App B.3_Waterbird Survey at Lake Mackay.pdf
PDF icon App B.4_Lvl 2 Vertebrate and Targeted Fauna Survey Vol 1.pdf
PDF icon App B.4_Lvl 2 Vertebrate and Targeted Fauna Survey Vol 2.pdf
PDF icon App C.1_Survey for Aquatic Macroinvert_SRE Fauna - Mackay SOP Project.pdf
PDF icon App C.2_Survey for Aquatic Macroinvertebrates - Mackay SOP Project.pdf
PDF icon App C.3_Dual Phase Survey for Short Range Endemic Fauna.pdf
PDF icon App D_Hydrology Report.pdf
PDF icon App E.1_Subterranean Fauna Risk Assessment.pdf
PDF icon App E.2_Pilot Survey for Subterranean Fauna - Mackay SOP Project.pdf
PDF icon App E.3_Phase 1 Survey for Subterranean Fauna - Mackay SOP Project.pdf
PDF icon App F_Preliminary Acid Sulfate Soils Investigation Vol 1
PDF icon App F_Preliminary Acid Sulfate Soils Investigation Vol 2
PDF icon App G_Uranium and Thorium Analytical Review Vol 1.pdf
PDF icon App G_Uranium and Thorium Analytical Review Vol 2.pdf
PDF icon App H.1_PMST Lake Mackay 65km.pdf
PDF icon App H.2_PMST Reports for Linear review.pdf
2. Decision on whether to assess this proposal
Chair's Determination: 
Assess - Public Environmental Review
Extract of determination: 
PDF icon Mackay Sulphate of Potash Proposal
Preliminary Environmental Factors: 
Social Surroundings
Flora and Vegetation
Subterranean Fauna
Terrestrial Fauna
Inland Waters
Date published: 
Monday, 4 February, 2019
3. Assessment
Scoping
Environmental scoping document: 
PDF icon Environmental Scoping Document-Approved-100920
Approved: 
Thursday, 10 September, 2020
Environmental Review
Public submissions: 
Wednesday, 4 May, 2022 to Monday, 30 May, 2022
Make a submission: 
Mackay Sulphate of Potash Project - Public Environmental Review
Environmental Review documentation: 
PDF icon Environmental Review Document
PDF icon Appendix A Env_Scoping_Doc.pdf
PDF icon Appendix B Stakeholder Engagement Register 9.09.21.pdf
PDF icon Appendix C.1 CEMP_with appendices.pdf
PDF icon Appendix C.2 FVEMP_final.pdf
PDF icon Appendix C.3 TFEMP_with_appendices.pdf
PDF icon Appendix C.4 IWEMP_final.pdf
PDF icon Appendix D MCP_final_v2.pdf
PDF icon Appendix E Environmental and Cultural Heritage Policy.pdf
PDF icon Appendix F_FloraSurveyReport v2.0_public.pdf
PDF icon Appendix G.1_FaunaConsolidationReport v3.1_public_part1.pdf
PDF icon Appendix G.1_FaunaConsolidationReport v3.1_public_part2.pdf
PDF icon Appendix G.2_LMKA-FF-19002 SRE Survey Report v4.0.pdf
PDF icon Appendix H lmka-sf-19001_subterranean fauna final rpt.pdf
PDF icon Appendix I.1 Mackay_Drilling_Report_2015-16.pdf
PDF icon Appendix I.2 Trench_Pump_Analysis_Report.pdf
PDF icon Appendix I.3 MM-HG-0073-Infill Drilling_July2019.pdf
PDF icon Appendix I.4 MM-HG-0070_Infiltrometer_Memo.pdf
PDF icon Appendix I.5 Mackay_Potash_Project-Island_Drilling_July_2019.pdf
PDF icon Appendix I.6 MM-HG-0069-Lysimeter_Memo.pdf
PDF icon Appendix I.7 MM-HG-0071-Shelby_Tube_Sampler_Memo.pdf
PDF icon Appendix I.8 LMKA-SS-19001 Recharge Lab Assessment Memo_Closure.pdf
PDF icon Appendix I.9 Recharge_Assessment_Memo.pdf
PDF icon Appendix I.11 Lake Mackay Stage 2 Surface Water Assessment_ERD_10_09_2021.pdf
PDF icon Appendix I.12 Water_Supply_Assessment_Groundwater_Modelling_Report.pdf
PDF icon Appendix I.13 Integrated_Groundwater_Flow_Solute_Transport_Model.pdf
PDF icon Appendix I.14 Longterm_Pumping_MEMO_12.11.20_RevA.pdf
PDF icon Appendix I.15 Consolidated Island_MEMO_16.11.20_RevA.pdf
PDF icon Appendix I.16 Regional Water Levels_MEMO_13.11.2020_RevA.pdf
PDF icon Appendix I.17 Island Impacts Memo_RevC_24.11.21.pdf
PDF icon Appendix I.18 Lake Mackay Salt Balance Memo RevE_10.09.21_FINAL.pdf
PDF icon Appendix I.19 Agrimin - Lake Mackay - Summary Hydrology and hydrogeology.pdf
PDF icon Appendix I.20 AMN_Water_Chemistry_Summary_Memo_210819.pdf
PDF icon Appendix I.21 LMKA_AQ_2021_05_GoldSim_Memo_v5_final.pdf
PDF icon Appendix J Lake Mackay Aquatic Ecology Report_v3 (1).pdf
PDF icon Appendix K.1 TO_Support_Tjurabalan.pdf
PDF icon Appendix K.2 201203_LT Agrimin_Parna Ngururrpa_Letter of Support.pdf
PDF icon Appendix L Acid_Sulphate_Soils.pdf
PDF icon Appendix M lmka_memo_ghg_v2_FINAL.pdf
PDF icon Appendix N offsets strategy_v4.pdf
Date Published (Environmental Review documentation): 
May 4, 2022
Proponent response to submissions: 
PDF icon Mackay SOP - Agrimin - Response to Submissions - DCCEEW - April 2024.pdf
PDF icon Mackay SOP - Agrimin - Response to Submissions - EPAS - April 2024.pdf
PDF icon Construction EMP V2.0 April 2024.pdf
PDF icon EPA Proposal Content Document - Mackay SOP Project.pdf
PDF icon Flora and vegetation EMP V2.0.pdf
PDF icon Hydrogeological assessment H3 - Brine - April 2024 - Rev3.pdf
PDF icon Hydrogeological assessment H3 - SIDE - April 2024.pdf
PDF icon Inland Waters EMP v2.0.pdf
PDF icon Letter of support to EPA 240412 Tjamu Tjamu AC for Agrimin Project.pdf
PDF icon Letter support to EPA 240417 Parna Ngururrpa AC for Agrimin Project.pdf
PDF icon Letter support to EPA 240418 Central Desert Services for Agrimin Project.pdf
PDF icon Mackay Potash Project Revised Offset Strategy v7.0_Redacted.pdf
PDF icon Terrestrial fauna EMP V3.0.pdf
Date published (Proponent response to submissions): 
July 11, 2024
Change to proposal during assessment under s. 43A
s. 43A notice: 
PDF icon CMS17364 - S43A Notice - 120620.pdf
PDF icon CMS17364 - S43A Notice - 110621.pdf
Date of approval s. 43A: 
Fri, 11/06/2021
4. EPA Report on assessment
EPA Report Number: 
1777
EPA Report: 
PDF icon EPA Report 1777 Mackay Sulphate of Potash Project.pdf
Key Environmental Factors: 
Social Surroundings
Flora and Vegetation
Subterranean Fauna
Terrestrial Fauna
Inland Waters
Date published: 
Tuesday, 10 December, 2024
Appeals close: 
Tuesday, 31 December, 2024
5. Decision on proposal and implementation of proposal
Ministerial Statement
Date of approval: 
Friday, 17 January, 2025
Ministerial Statement: 
PDF icon Ministerial statement 1244.pdf

Source URL:https://www.epa.wa.gov.au/proposals/mackay-sulphate-potash-project