Boral — Corporate Update (December 2021)
33 slides from Boral's corporate update, Dec 10, 2021
Slide 1: Berrima Colliery – Closure Working Group Meeting #12
Click to edit Master title style Subheader Berrima Colliery – Closure Working Group Meeting #12 10 December 2021
Slide 2: Agenda
Agenda 1. Welcome and Apologies - Introductions 2. Terms of Reference - Conduct of CWG Members 3. Review of minutes & actions 4. Water Quality Results update - Greg Johnson 5. Water treatment update- Greg Johnson/David Spears 6. Pit top treatment and pipeline EPL EIP & REF – Greg Johnson, EPA, Rob B
Slide 3: Welcome and Apologies
01 Welcome and Apologies
Slide 4: CWG Representatives, Apologies & Guests
CWG Representatives, Apologies & Guests ● Boral - Girish Yadwad, Greg Johnson, David Spears, Kate Woodbridge ● Resource Regulator - Greg Kininmonth, Peter McMillan ● Environment Protection Authority - William Dove, Andrew Couldridge (apology), ● WaterNSW - Ravi Sundaram ● Wingecarribee Shire Council
Slide 5: Terms of Reference – Code of Conduct
02 Terms of Reference – Code of Conduct
Slide 6: Terms of Reference – Code of Conduct
Terms of Reference – Code of Conduct 6
Slide 7: Review of minutes and actions
03 Review of minutes and actions
Slide 8: Review of Minutes – suggested amendments
Review of Minutes – suggested amendments 8
Slide 9: Review of minutes - actions
Review of minutes - actions Summary of Meeting Actions: 1 Tony McCormick to write to Boral on behalf of Terry Renahan to commence negotiations in relation to property access to undertake environmental investigations. 2. Boral to seek advice from Dr lan Wright in relation to river monitoring as part
Slide 10: Water Quality Results Update
04 Water Quality Results Update
Slide 11: Surface Water Monitoring Update
Surface Water Monitoring Update 11
Slide 12: Water Quality Guidelines
Water Quality Guidelines In order to interpret and give context to the water quality monitoring results from the Colliery we are now including details, where applicable, against the Australian Water Quality Guidelines for Freshwater Protection, Australian Water Quality Guidelines – Primary Industry
Slide 13: Adit discharge update – Volume, pH & EC
Adit discharge update – Volume, pH & EC Volume discharged – 1.7 ML per day (av.) pH – dosing is continuing EC – trending below 1000uS/cm 13
Slide 14: Adit discharge update – Iron & Manganese
Adit discharge update – Iron & Manganese Iron – Continues to remain low Manganese – remaining low 14
Slide 15: Adit discharge update – Nickel and Zinc
Adit discharge update – Nickel and Zinc Nickel – stabilised to levels seen during mining. Zinc – stabilised to levels seen during mining. Commentary – Lime dosing has had the desired effect on slightly raising the pH while reducing Ni and Zn to historical levels. Aeration is the key driver to manage
Slide 16: River Quality Update
River Quality Update BCRAL ©
Slide 17: River quality update – pH & EC
River quality update – pH & EC Note: we no longer are required to monitor at the 100m, 1km, 2km or 3km points downstream pH – No influence in river at Biloela (6km) EC – No influence in river at Biloela (6km) 17
Slide 18: River quality update – iron & manganese
River quality update – iron & manganese Iron – Levels remain low, discharge concentrations are below usual river levels. Manganese – Low levels continue to be recorded in the river 18
Slide 19: River quality update – Nickel and Zinc
River quality update – Nickel and Zinc Nickel – Discharges influencing levels within mixing zone, river is well below 95% protection down stream. Zinc – Levels below 95% protection downstream. 19
Slide 20: River quality update – Sulphate and commentary
River quality update – Sulphate and commentary Copper – Below stock drinking levels. Other sources influencing. Sulphate – Discharges influencing downstream, however, well below any trigger points. 20
Slide 21: Water Treatment Update
OS Water Treatment Update eee
Slide 22: Water treatment update
Water treatment update • The temporary lime dosing system remains in place, to raise the pH of mine water discharge. • Dosing rate has been successful in raising pH from 6.5 to 7.2. • The mine water quality behind the bulkheads remains low, the underground water treatment system remains in operation
Slide 23: Bulkhead water level update
Bulkhead water level update Discharge averaged has slightly increased to 1.85ML/day between September 2021 and December 2021. The water level behind the bulkheads has been remained a reasonably constant height for the last quarter though the underground mine water treatment pumping system. 23
Slide 24: Pit Top Treatment & Pipeline EPL EIP & Review of Environmental Factors
06 Pit Top Treatment & Pipeline EPL EIP & Review of Environmental Factors
Slide 25: Review of Environmental Factors – Process and Input
Review of Environmental Factors – Process and Input As part of the EIP within the EPL we are required to complete an environmental assessment via a Review of Environmental Factors (REF) Rob Byrnes will be assisting Boral the prepare the assessment and will discuss the process. We are also seeking co
Slide 26: Tip Top Treatment and Pipeline – EPL EIP
Tip Top Treatment and Pipeline – EPL EIP • Following an application by Boral, the NSW EPA have drafted an EIP to be included in the EPL. The proposed licence change includes: Questions/ Comments on Draft Conditions & REF Process/Contents ? 26
Slide 27: Mandemar Lane Update
07 Mandemar Lane Update
Slide 28: Mandemar Lane update
Mandemar Lane update Still to resolve access to one property owner to enable final subsidence survey. 28
Slide 29: Communications Update
8 Communications Update
Slide 30: Communications update: newsletter, video project, community engagement
• Newsletter – December 2021 newsletter released last week. Distribution limited to CWG members and Berrima PO notice board. • Sustainable Us video project with Wingecarribee Shire Council – Council have asked Boral to participate in a video case study series. The purpose of the project is to educat
Slide 31: General Business
9 General Business
Slide 32: Next Meeting
10 Next Meeting Proposed Friday 11 March 2022
Slide 33: Thanks for your participation
Thanks for your participation 33