Decision Report        

Decision Report        

Government of Western Australia Department of Water and Environmental Regulation Decision Report Part V, Division 3 Environmental Protection Act 1986 Licence Holder: BHP Billiton Iron Ore Pty Ltd ACN: 008 700 981 Licence Number: L4513/1969/18 File Number: DER2016/000596 DER2013/001083 Premises: BHP Billiton Iron Ore Port Hedland Operations Nelson Point and Finucane Island Nelson Point Lease LGEI123403, Goldsworthy Rail Lease LGE M653978, Finucane Island Loop LGE I126342, Finucane Island Lease LGE J998595, PACE Wharf Lease K693809L, Utah Jild Lease K693814L, Harriet Point Lease K693808, Nelson Point Wharf Lease LGE I123400, Under Harbour Tunnel Lease K693815L, Finucane Island Substation Lease LGE G946533 PORT HEDLAND WA 6721 Date of report: 16/02/2018 Status of Report Final Table of Contents Definitions ................................................................................................................... vi 1. Purpose and scope of assessment ................................................................... 7 2. Background .........................................................................................................2 3. Overview of Premises.........................................................................................3 3.1 Infrastructure .......................................................................................................... 3 3.2 Exclusions to the premises ..................................................................................... 5 3.3 Operational aspects ............................................................................................... 6 4. Legislative context..............................................................................................6 4.1 Part IV of the EP Act .............................................................................................. 7 4.1.1 Background ..................................................................................................... 7 4.1.2 Ministerial Statement 433 ................................................................................ 7 4.1.3 Ministerial Statement 740 ................................................................................ 7 4.1.4 Ministerial Statement 1070 .............................................................................. 7 4.1.5 EPA Bulletin No.2 – Port Hedland Noise and Dust .......................................... 8 4.2 Port Hedland Dust Management Taskforce ............................................................ 8 4.2.1 2016 Report to Government ............................................................................ 8 4.2.2 Health Risk Assessment (HRA) ..................................................................... 10 4.3 Contaminated Sites .............................................................................................. 12 4.4 Other Legislation .................................................................................................. 12 4.4.1 State Agreement Act ..................................................................................... 12 4.4.2 Department of Mines, Industry Regulation and Safety ................................... 12 4.4.3 Rights in Water and Irrigation Act 1914 ......................................................... 12 4.4.4 Noise Regulations ......................................................................................... 12 4.4.5 Environment Protection and Biodiversity Conservation Act 1999 ................... 12 4.5 Part V of the EP Act ............................................................................................. 13 4.5.1 Applicable Regulations, Standards and Guidelines ....................................... 13 4.5.2 Works Approval W5611/2014/1 ..................................................................... 13 4.5.3 Works Approval W5792/2015/1 ..................................................................... 13 4.5.4 Licence amendments .................................................................................... 14 4.5.5 Compliance inspections and compliance history ........................................... 14 4.5.6 Complaint History .......................................................................................... 16 4.5.7 Port Hedland site visit .................................................................................... 17 4.6 Air Quality Modelling and Monitoring .................................................................... 18 4.6.1 Air quality modelling ...................................................................................... 18 4.6.2 Ambient air quality monitoring ....................................................................... 23 4.6.3 Ambient air quality and throughput ................................................................ 26 4.6.4 Boundary Monitoring ..................................................................................... 27 4.6.5 Dust forecasting tools and live monitoring ..................................................... 28 ii 4.7 Air Quality and Amenity ........................................................................................ 29 4.8 Interim Boundary Targets ..................................................................................... 31 4.9 Noise Monitoring .................................................................................................. 31 4.10 Discharge monitoring ........................................................................................ 32 4.10.1 Site stormwater and washdown water ........................................................ 33 4.10.2 Wastewater ................................................................................................ 34 5. Consultation ...................................................................................................... 34 6. Location and siting ........................................................................................... 35 6.1 Siting context ........................................................................................................ 35 6.2 Residential and sensitive premises ....................................................................... 36 6.3 Specified ecosystems ........................................................................................... 37 6.3.1 Environmental Setting ................................................................................... 37 6.4 Groundwater and water sources ........................................................................... 38 6.5 Meteorology ......................................................................................................... 39 6.5.1 Wind direction and strength ........................................................................... 39 6.5.2 Regional climatic aspects .............................................................................. 40 6.5.3 Rainfall and temperature ............................................................................... 40 7. Risk Assessment .............................................................................................. 42 7.1 Confirmation of potential impacts ......................................................................... 42 7.2 Consequence and Likelihood of Risk Events ........................................................ 44 7.3 Acceptability and Treatment of Risk Event ........................................................... 45 7.4 Risk Assessment – Dust ....................................................................................... 45 7.4.1 Description of Risk Event .............................................................................. 45 7.4.2 Identification and general characterisation of emission .................................. 45 7.4.3 Description of potential adverse impact from the emission ............................ 45 7.4.4 Criteria for assessment.................................................................................. 46 7.4.5 Licence Holder controls ................................................................................. 46 7.4.6 Key findings ................................................................................................... 50 7.4.7 Consequence ................................................................................................ 50 7.4.8 Likelihood of consequence ............................................................................ 50 7.4.9 Overall rating of dust impacts ........................................................................ 51 7.5 Risk Assessment – Noise ..................................................................................... 51 7.5.1 Description of Risk Event .............................................................................. 51 7.5.2 Identification and general characterisation of emission .................................. 51 7.5.3 Description of potential adverse impact from the emission ............................ 51 7.5.4 Criteria for assessment.................................................................................. 51 7.5.5 Licence Holder controls ................................................................................. 52 7.5.6 Key findings ................................................................................................... 53 7.5.7 Consequence ................................................................................................ 53 iii 7.5.8 Likelihood of consequence

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