Boral — Corporate Update (November 2019)
35 slides from Boral's corporate update, Nov 18, 2019
Slide 1: Berrima Colliery - Closure Working Group Meeting #5
Berrima Colliery - Closure Working Group Meeting #5 >Welcome New Berrima Hall 18 November 2019
Slide 2: Agenda
Agenda 1. Welcome and Apologies 2. Terms of Reference - Conduct of CWG Members 3. Review of minutes & actions 4. Water Quality/Ecology Update - Greg Johnson 5. EPA Toxicity Assessment - EPA 6. Bulkhead Seals Update - Greg Johnson 7. EPL/CCL Updates - Greg Johnson 8. Mandemar Lane Update - Greg Johns
Slide 3: Welcome - CWG Representatives, Apologies & Guests
1. Welcome - CWG Representatives, Apologies & Guests ● Boral - Fabio Colusso, Greg Johnson, David Spears (apology), Tom Horn (BCW) ● Resource Regulator - Greg Kininmonth, Peter McMillan ● Environment Protection Authority - William Dove, Andrew Couldridge ● WaterNSW - Ravi Sundaram ● Wingecarribee Sh
Slide 4: Terms of Reference - Code of Conduct of CWG Members
2. Terms of Reference - Code of Conduct of CWG Members Titlefefefefeffff4g45g4545
Slide 5: Review of Minutes – suggested amendments
3. Review of Minutes – suggested amendments Titlefefefefeffff4g45g4545
Slide 6: Surface Water Monitoring Update
4. Surface Water Monitoring Update Titlefefefefeffff4g45g4545
Slide 7: Surface Water Monitoring Update - October 2019
Surface Water Monitoring Update - October 2019 ● Monthly sampling of water quality continuing ● Spring 2019 Macroinvertebrate sampling undertaken in September ● EPA participation in September sampling which included their own toxicology assessment Titlefefefefeffff4g45g4545 We continue to use the dron
Slide 8: Surface Water Monitoring Update - Summary of Findings
Surface Water Monitoring Update Summary of Findings ● Since the installation of the bulkheads, the discharge continues to be significantly down from 2.5ML to 0.125ML per day ● Concentrations of metals and other parameters downstream have progressively reduced and are consistent with upstream water q
Slide 9: Wingecarribee River Monitoring
Wingecarribee River Monitoring ● pH - upstream and downstream neutral. pH drop July to September ● Conductivity - minor influence on EC, stream flow also low ● Nitrates - While stream flow is low, influence of Bowral STP more pronounced. Titlefefefefeffff4g45g4545
Slide 10: Surface Water Monitoring Update
urface Water Monitoring Update ● Iron - Drops rapidly, generally follows upstream sites. Rivulet shows occurrence of naturally high fluctuations ● Mg - Decreases rapidly through mixing zone. During 2019 there has been a decline close to discharge and increase downstream Titlefefefefeffff4g45g4545
Slide 11: Surface Water Monitoring Update
urface Water Monitoring Update ● Nickel - Average Ni Conc. since Jan 2018 is 0.009mg/L which is below AZECC default value of 0.011mg/L. Conc. at rivulet 0.002mg/L ● Zinc - Since April 2019 conc. Have increase above and below discharge. Similar changes at rivulet. Changes not from discharge. Zn conc.
Slide 12: Macroinvertebrate study update - May 2019 Sampling Summary
Macroinvertebrate study update - May 2019 Sampling Summary ● General observations was that there appeared to be less iron floc/precipitate downstream of the adit. We believe this decrease has led to an increase in abundance , family richness and EPT. While we have not done a statistical analysis yet
Slide 13: Macroinvertebrate study update - Site 3 Detail
Macroinvertebrate study update - May 2019 Sampling Summary Site 3 Detail ● Increase in abundance ● Macroinvertebrate taxonomic richness (type of bugs) increased ● Increase in sensitive invertebrates i.e. EPT index. EPT was higher than upstream site in May 2019 Note: Dr Ian Wright reported EPT downst
Slide 14: Macroinvertebrate study update - September 2019 preliminary findings
Macroinvertebrate study update - September 2019 preliminary findings ● Appears to be an improvement in stream health during 2019 ● Indicated by increases in EPT, abundance and taxonomic richness similar to upstream and tributory reference ● Improved stream health with all sites, particularly sites 3
Slide 15: NSW EPA - Ecotoxicity Report
5. NSW EPA - Ecotoxicity Report ● September 2019 - EPA and members of the Environment, Energy and Science Group in the DPIE participated in the monthly sampling round taking independent samples ● Purpose was to take samples upstream and downstream of the adit and compare with previous testing by the
Slide 16: Bulkhead Sealing Plan Update - Location in respect of workings
6. Bulkhead Sealing Plan Update - Location in respect of workings Titlefefefefeffff4g45g4545
Slide 17: Bulkhead Seal installation update
Bulkhead Seal installation update Titlefefefefeffff4g45g4545
Slide 18: Bulkhead Seal installation update
Bulkhead Seal installation update Titlefefefefeffff4g45g4545
Slide 19: Bulkhead Seal installation update
Bulkhead Seal installation update ● Internal mine water treatment pumps stopped on 24 April 2019 ● Bulkheads installed by end May 2019 ● Personnel inspecting and recording observations twice a week ● Average rise of 20mm/day or 140mm/week inbye of bulkheads - linear fashion ● Observations to date -
Slide 20: Environmental Protection Licence/ CCL Updates
7. Environmental Protection Licence/ CCL 748 Updates EPL 608 No modifications. PIRMP drill undertaken in October. PIRMP updated. Annual return due for submission 30 December 2019 CCL 748 MOP - Berrima colliery Mining Operations Plan dated September 2019 - Notice of Approval received October 2019 Tit
Slide 21: Mandemar Lane Update
8. Mandemar Lane Update ● Last meeting the Mandemar Lane resident representative Tony McCormick presented to the CWG. ● Tony raised concerns regarding ○ Subsidence and vibration impacts on structures, services and surfaces ○ Bores drying and/or collapsing ○ Conductivity increases and soil salinity ○
Slide 22: Mandemar Lane Locality Map
Mandemar Lane Locality Map Titlefefefefeffff4g45g4545
Slide 23: B62 Cross Section and water tables
B62 Cross Section and water tables ● There are 3 water tables ● Upper Hawkesbury Sandstone ● Lower Hawkesbury Sandstone ● Illawarra coal measures ● At B62 the coal seam Titlefefefefeffff4g45g4545 is below the river
Slide 24: B62 & B63 Water levels within each water table
B62 & B63 Water levels within each water table Titlefefefefeffff4g45g4545
Slide 25: Geology and groundwater
Geology and groundwater ● Robertson Basalt - Localised perched aquifers ● Dolerite dykes - There are a number of igneous dykes which run through the mining area ● Hawkesbury Sandstone - Divided into two layers by a siltstone/claystone interlayer ○ Upper Hawkesbury Sandstone (Aquifer) - static water
Slide 26: Bord and Pillar Mining - Technique and Subsidence
Bord and Pillar Mining - Technique and Subsidence ● Berrima Colliery is a Bord and Pillar mine, not a longwall mine ● Subsidence impacts from Bord and Pillar mining is less extensive than longwall mining ● Bord and pillar involves parallel tunnels being driven into the coal seam from the mine entran
Slide 27: Land Access Agreements
Land Access Agreements ● Prior to undertaking sampling and investigations we require access agreements with landowners ● Our priority is to access property where we have previously monitored as per the Subsidence Management Plan and associated Environmental Management Plan ● By gathering this data w
Slide 28: Communications Update - Tom Horn (BCW)
9. Communications Update - Tom Horn (BCW) Titlefefefefeffff4g45g4545
Slide 29: Communications Update - Dedicated Community Website
. Communications Update - Tom Horn (BCW) •Activity undertaken: Dedicated Community Website: •Microsite was launched in September •Single home for all information on the Berrima Colliery closure •Designed specifically for the community and easy to navigate. •Provides all reports, minutes etc. from fo
Slide 30: Dedicated Community Website
•Activity undertaken: Dedicated Community Website: •Over 300 unique visitors •Average of 3 minutes on the website •Promoted through media, newsletters and engagement day •10 people have signed up for updates Further additions planned: -CWG member contact option -Updated Q&A -Ongoing updates to repor
Slide 31: Informational Video and Infographics
•Activity undertaken: Informational Video: •Four minute video dedicated to the Berrima Colliery closure •Provides background of site operation and overview of activity being undertaken •Has received 31 views to date Infographics: •Two infographics developed and set live •One focused on bulkheads •On
Slide 32: Communications continued - Community Engagement Days
Communications continued Activity undertaken: Community Engagement Days •Four days held on 31 Oct, 1Nov, 8 Nov, 9 Nov •25 attendees •Approximately an hour per attendee •Provided maps, images and plans of Colliery site •Provided graphic representations and video •Created in-depth conversations and an
Slide 33: General business
10. General business Titlefefefefeffff4g45g4545
Slide 34: Next meeting date
10. Next meeting date Proposing - Monday 9 March 2020 Location – Berrima Anglican Church Hall Titlefefefefeffff4g45g4545
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