Boral — Corporate Update (June 2021)
33 slides from Boral's corporate update, Jun 25, 2021
Slide 1: Berrima Colliery - Closure Working Group Meeting #10
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG Berrima Colliery - Closure Working Group Meeting #10 >Welcome Microsoft Teams Meeting Only 25 June 2021
Slide 2: Agenda
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 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 S
Slide 3: Welcome - CWG Representatives, Apologies & Guests
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 1. Welcome - CWG Representatives, Apologies & Guests ● Boral - Girish Yadwad, Greg Johnson, David Spears, Jenny Smilie ● Resource Regulator - Greg Kininmonth, Peter McMillan ● Environment Protection Authority - William D
Slide 4: Terms of Reference - Code of Conduct of CWG Members
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 2. Terms of Reference - Code of Conduct of CWG Members Titlefefefefeffff4g45g4545
Slide 5: Review of Minutes – suggested amendments
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – suggested amendments Titlefefefefeffff4g45g4545
Slide 6: Review of Minutes – actions
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – actions Summary of Meeting Actions: 1. Resources Regulator to check if a 3D model exists of the mine workings and circulate this to the CWG. 2. Boral to confirm pH trends in bores up dip of the min
Slide 7: Review of Minutes – actions (pH & other trends in bores)
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – actions (pH & other trends in bores) Titlefefefefeffff4g45g4545
Slide 8: Review of Minutes – actions (pH & other trends in bores)
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – actions (pH & other trends in bores) Titlefefefefeffff4g45g4545
Slide 9: Review of Minutes – actions (pH & other trends in bores)
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – actions (pH & other trends in bores) Titlefefefefeffff4g45g4545
Slide 10: Review of Minutes – actions (pH & other trends in bores)
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 3. Review of Minutes – actions (pH & other trends in bores) Titlefefefefeffff4g45g4545
Slide 11: Surface Water Monitoring Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 4. Surface Water Monitoring Update Titlefefefefeffff4g45g4545
Slide 12: Water Quality Guidelines
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 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 fo
Slide 13: Adit discharge update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG Adit discharge update Volume discharged – 1.8-1.9 ML per day, down on long term average of 2.6 ML pH – dosing has increased pH towards 7 EC – trending down, now below 1000us/cm Titlefefefefeffff4g45g4545
Slide 14: Adit discharge update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG Adit discharge update Iron – remains low. Manganese – decreasing back to Titlefefefefeffff4g45g4545 mid 2020 levels.
Slide 15: Adit discharge update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG Adit discharge update Nickel –trending down towards mid 2020 levels. Titlefefefefeffff4g45g4545 Zinc – trending up down towards mid 2020 levels. Commentary – By dosing with lime we have managed to slightly raise the pH.
Slide 16: River Quality Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG River Quality Update Titlefefefefeffff4g45g4545
Slide 17: River Quality Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG River Quality Update (note: River monitoring has reverted back to licence points every 2 months) pH – Recent round of sampling indicating lower river pH. Mine discharge not impacting stream pH. Titlefefefefeffff4g45g4545
Slide 18: River Quality Update - Cont.
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG River Quality Update - Cont. Iron – levels managed in discharge, other factors impacting iron in waters. Titlefefefefeffff4g45g4545 Manganes
Slide 19: River Quality Update - Cont.
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG River Quality Update - Cont. Nickel – While mine discharges appear to be influencing levels within the mixing zone. Returning to WQ guidelines (95% protection) within the mixing zone. River water meeting drinking water g
Slide 20: River Quality Update - Cont.
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG River Quality Update - Cont. Sulphate – The mine appears to be influencing sulphate levels immediately downstream, however there are also other natural sources downstream influencing. Titlefefefefeffff4g45g4545 Commentar
Slide 21: Underground Water Treatment Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 5. Underground Water Treatment Update • As noted last meeting the pH of mine waters has been trending down • The mine water behind the bulkheads remains low. • A decision was made to temporarily cease pumping from behind
Slide 22: Bulkhead Water level update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 5.1 Bulkhead Water level update Discharge averaged 1.65ML/day between March 2021 and June 2021
Slide 23: Stage 2 MOP Status
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 6. Stage 2 MOP Status ● The Stage 1 Closure MOP covers the period ending 31 December 2020 or until such time as the Stage 2 Closure MOP is approved. ● Stage 2 Closure MOP submitted in November 2020 which was to cover the
Slide 24: Proposed Long Term Pit Top Treatment Solution Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 7. Proposed Long Term Pit Top Treatment Solution Update The proposed pit top treatment solution will require appropriate development approvals. We have completed a scoping report on the pit top treatment and proposed pip
Slide 25: Environmental Protection Licence/ CCL 748 Updates
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 8. Environmental Protection Licence/ CCL 748 Updates EPL 608 No updates. CCL 748 2020 AEMR submitted to Resources Regulator late Feb 2021 Stage 2 Closure MOP resubmitted in May 2021, Stage 1 MOP approval extended to end
Slide 26: Mandemar Lane Update - Bore Locations
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 9. Mandemar Lane Update - Bore Locations Titlefefefefeffff4g45g4545
Slide 27: Mandemar Lane Groundwater Monitoring - Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 9. Mandemar Lane Groundwater Monitoring - Update ● Belbin Bore (below mine workings) – The most recent monitoring data for Belbin bore indicates that piezometeric level has increased since December 2020 while the pumping
Slide 28: Mandemar Lane Groundwater Monitoring - Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 9. Mandemar Lane Groundwater Monitoring - Update ● Culpepper (upper Hawkesbury sandstone) While piezometric level in Culpepper bore remained below historical level (prior to 2017) a continuous rise is observed in the las
Slide 29: Mandemar Lane Update – Subsidence update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 9. Mandemar Lane Update – Subsidence update • Former GPS markers which are used as survey markers on buildings/structure etc are no longer in place. Unfortunately it not a matter of going back to the actual GPS point, it
Slide 30: Communications Update
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 10. Communications Update •Objective: Continue the flow of information with regard to the closure plan updates and activity, and provide forums for the community to easily raise and discuss questions with Boral. •Deliver
Slide 31: Other business
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 11. Other business Titlefefefefeffff4g45g4545
Slide 32: Next meeting date
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG 12. Next meeting date Proposing – late September 2021, pending Stage 2 MOP approval and Confirmation on DPIE approval pathway Location – Procurement Building Berrima Cement and Online Titlefefefefeffff4g45g4545 For furth
Slide 33: DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG
DRAFT for CWG Pre-meeting Review – Not for external distribution outside of CWG