Boral — Corporate Update (September 2021)
36 slides from Boral's corporate update, Sep 24, 2021
Slide 1: Berrima Colliery – Closure Working Group Meeting #11
Click to edit Master title style Subheader Berrima Colliery – Closure Working Group Meeting #11 24 September 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. Mine Operations Plan Status– Greg Johnson 7. Pit top treatment approval
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 Boral to commence discussions with the Belbin’s in relation to their bore. Tony McCormick to contact Terry Renahan in relation to arranging a meeting with Boral. Boral to prepare a newsletter with particular emphasis on the pit top treatment project and target the Medway
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 – stabilising at or below 1000uS/cm 13
Slide 14: Adit discharge update – Iron & Manganese
Adit discharge update – Iron & Manganese Iron – Continues to remain low Manganese – improving trend down. 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. Upstream influence in July 2021 sampling. 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. • As we will continue to dose with lime going forward a continuous dosing system is being investigated and the install
Slide 23: Bulkhead water level update
Bulkhead water level update Discharge averaged 1.7ML/day between June 2021 and September 2021 23
Slide 24: Mine Operations Plan Status
06 Mine Operations Plan Status
Slide 25: Mine Operations Plan
Mine Operations Plan • The Stage 2 Final Closure MOP has been placed on hold. • The original goal was to have the Stage 2 MOP approved and once completed seek to relinquish the lease. • Further studies on underground water quality post installation of pit top treatment is expected to determine if th
Slide 26: Pit Top Treatment Approval Pathway
07 Pit Top Treatment Approval Pathway
Slide 27: Tip Top Treatment and Pipeline – Approval Pathway
Tip Top Treatment and Pipeline – Approval Pathway • Scoping report prepared and submitted to DPIE • Meetings held with DPIE, RR and EPA (July & August) • RR raised concerns about long term management of waters, if the pit top treatment was the best option in the longer term, risks to closing mine an
Slide 28: Environmental Protection Licence and Mining Lease Update
08 Environmental Protection Licence and Mining Lease Update
Slide 29: Environmental Protection Licence & Mining Lease
Environmental Protection Licence & Mining Lease EPL 608 The licence was amended in August 2021 to remove the requirement to undertake dust monitoring and testing of oil and grease in discharge waters. Annual PIRMP drill was undertaken on 20th September, with a review underway of the PIRMP. CCL 748 S
Slide 30: Mandemar Lane Update
09 Mandemar Lane Update
Slide 31: Mandemar Lane update - Subsidence
Mandemar Lane update - Subsidence No update on groundwater this quarter, which was to be the final. Lockdown and restrictions on regional travel prevented downloads and analysis by Dr Katarina David. Subsidence – Matthew Montgomery from Subsidence Advisory is a guest today (claims). Note Principal S
Slide 32: Communications Update
10 Communications Update
Slide 33: Communications update
• Introduction – Kate Woodbridge new Stakeholder Relations Manager NSW/ACT • Newsletter – September 2021 newsletter released last week. Distribution limited to CWG members and Berrima PO notice board • Media relations – ongoing communication and announcements will be through media contacts managed b
Slide 34: General Business
11 General Business
Slide 35: Next Meeting
12 Next Meeting Friday 10 December 2021
Slide 36: Thanks for your participation
Thanks for your participation 36