Iluka Resources Limited · ASX:ILU
Iluka Resources — Technical Presentation (March 2021)
17 slides from Iluka Resources's technical presentation, Mar 24, 2021
Slide 1: Wimmera Project Noise and Vibration Impact Assessment
Wimmera Project Noise and Vibration Impact Assessment Community Information Session 24 March 2021
Slide 2: Noise and Vibration Impact Assessment
Noise and Vibration Impact Assessment Noise and Vibration Assessment Objectives Measurement of Existing Conditions Criteria Impact Assessment Mitigation
Slide 3: Noise and Vibration – EES Draft Evaluation Objective
Noise and Vibration – EES Draft Evaluation Objective • To protect the health and wellbeing of the community, and minimise effects on air quality, noise and social amenity. • Assess the likely noise increases, and vibration impacts at sensitive receptors in the vicinity of the project and along the p
Slide 4: Noise and Vibration – Key legislation and guidance
Noise and Vibration – Key legislation and guidance Construction Operation State State • Civil construction, building and demolition • Environmental Protection Act 1970 (Vic) guide (EPA Vic Publication No. 1834) • Environmental Protection Amendment Act Vibration (No applicable AS/NZ standards) 2017 (
Slide 5: Mine layout and closest receptors
Mine layout and closest receptors • Sensitive receptors in all directions surrounding the mine site. • Noise levels modelled for all sensitive receptors within 5km of the mine site including, Noradjuha, Toolondo and Clear Lake. • Six receptors within mine layout development envelope will require an
Slide 6: Baseline noise monitoring
Baseline noise monitoring Period Average LA90 dB Day 27 to 34 Evening 26 to 32 Night 21 to 25 • Noise monitoring in February 2019 for one month at six locations. • Further monitoring in March 2020 at three locations. • Typical noise levels for rural environment. Red Gum Swamp
Slide 7: Baseline vibration monitoring
Baseline vibration monitoring Site 2 • Site 1 - Natimuk-Hamilton Road • Site 2 - Nurrabiel Church Road Measured existing vibration levels are low, and below human comfort vibration criteria for a residential building. Site 1
Slide 8: Construction noise and vibration assessment
Construction noise and vibration assessment Stage Activity Duration Description • Construction works will occur predominantly C1 Bulk/earthworks/civils 2 months Clearing and preparing site, excavations during normal (daytime) working hours, for a period of up to two years. C2 Concrete works 4 months
Slide 9: Construction noise assessment
Construction noise assessment
Slide 10: Operational noise assessment
Operational noise assessment Noise from Industry in Regional Victoria (NIRV) Publication 1411 Recommended Maximum Noise Levels (RMNLs) Day Evening Night 46 dB(A) 41 dB(A) 36 dB(A)
Slide 11: Operational noise modelling
Operational noise modelling • Noise model includes mining fleet, processing plant, and other ancillary equipment including truck movements • Fixed location of mineral unit plant (MUP) • Noise levels modelled by Years 1, 7, 13, 16, 17 and 19 • Noise modelling is an iterative process to assess mitigat
Slide 12: Operation - Initial mitigation measures
Operation - Initial mitigation measures • Dredge mining method • Fixed location of mineral unit plant (MUP) • Stockpiles • AMC cell activity day period only Dredge • Reduced night time ancillary and mining activities Amphiroller in the Accelerated Mechanical Consolidation (AMC) cell
Slide 13: Operational noise assessment Year 1
Operational noise assessment Year 1 Dredge
Slide 14: Operational noise assessment Year 16
Operational noise assessment Year 16 Dredge Red Gum Swamp
Slide 15: Key findings - Operation
Key findings - Operation 5km Night-time mining Operational noise is predicted to exceed the NIRV 2km Recommended Maximum Noise Level (36 dB(A)) 1km • Red – exceedance > 7 dB • Yellow – exceedance < 7 dB • Blue – exceedance <2 dB Exceedances in the north primarily due to the processing plant, elsewhe
Slide 16: Noise and vibration assessment - Transport Route
Noise and vibration assessment - Transport Route Horsham • Four transport route options under consideration. • 60 truck movements per 24-hour period, (2 to 3 movements per hour). • Assessment to consider the noise impacts and potential for sleep disturbance at receptors within Noradjua 100 metres fr
Slide 17: Next steps - development of mitigation measures
Next steps - development of mitigation measures • Consultation with the local community to discuss the noise and vibration impact assessment. • Discussions with the EPA, council and stakeholders. • Refinement of proposed operations and mitigation measures to satisfy the evaluation objectives set out
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