Terramin Australia Limited · ASX:TZN
Terramin Australia — Corporate Update (May 2015)
19 slides from Terramin Australia's corporate update, May 2015
Slide 1: Update and Review
Update and Review Joe Ranford – General Manager 1
Slide 2: Premier's Awards – Environmental Excellence in Mining
Premier’s Awards Environmental Excellence in Mining Awarded at the SACOME Annual Resource Dinner on 13th April 2015 Special Commendation awarded to Terramin for the work undertaken for the TSF Phytocap Cover design, including vegetation cover trials, landfill cover soil moisture testwork, geotec
Slide 3: Key points for Quarter 1
Key points for Quarter 1 Closure Plan feedback received from Regulators – May 2015 Currently working through a list of issues which need to be clarified from the Regulators - formal feedback received Tuesday 19th May 2015 4 spot fires along AZM boundary have been attended by CFS in February/Ma
Slide 4: Terramin Upcoming Activities
Terramin Upcoming Activities Lime continues to be stored onsite Normet trials - research and development of equipment Bird in Hand pre-feasibility and baseline environmental monitoring continues 4
Slide 5: Quarterly Environment Report
Quarterly Environment Report Environment and Community: Matt Daniel 5
Slide 6: Environment News at AZM
Environment News at AZM Care and Maintenance Plan approved 23rd March 2015 2014 MARCR submitted Currently being reviewed by DSD Annual TSF audit completed in February Arsenic trends in TSF D confirmed to be endemic to the region Employed school leaver as a general helper around site Pa
Slide 7: Lead deposition and Dust deposition – PM10 for Q1 2015
PM10 (ug/m3) 10 20 30 40 50 60 0 03/01/2015 10/01/2015 16/01/2015 22/01/2015 28/01/2015 03/02/2015 PEPR Criteria 09/02/2015 15/02/2015 24/02/2015 02/03/2015 Pm10 TSP PM10(Hi-Vol) 05/03/2015 11/03/2015 17/03/2015 23/03/2015 Lead deposition (ug/m3) 0.1 0.2 0.3 0.4 0.5 0.6 0 3/01/2015 10/01/2015 17/01/
Slide 8: Points of interest – Closure Plan
Points of interest – Closure Plan 1. Mine void recharge 2. Seepage flow rates and TSF decant pond volume 3. Seepage water quality vs. TSF decant water quality 4. Ecosystem Function Analysis 8
Slide 9: Mine void recharge: Groundwater Elevation
1. Mine void recharge Groundwater model updated Predicted versus Actual Groundwater Level Recovery Time (days) 1 10 100 1000 10000 100 50 0 Groundwater Elevation (m AHD) DH02 bottom of hole -50 Predicted GWL recovery for DH02 Observed GWL in Bore DH02 Predicted GWL recovery Mine Void -100 Observed G
Slide 10: Seepage flow rates & TSF decant pond volume
2. Seepage flow rates & TSF decant pond volume TSF Seepage Drain Flows Drain 1 Drain 2 Drain 3 Drain 4 Drain 5 Total Flow (L/min) 25.00 20.00 TSF water reports to seepage drains 15.00 through an osmotic Flow rate (L/min) filter 10.00 Water seeps through 1.5mm HDPE liner, this filters many TSF 5.
Slide 11: Zinc content TSF and regional groundwater
10 12 16 14 0 2 4 6 8 01/04/2009 20/07/2009 01/09/2009 01/01/2010 10/02/2010 17/03/2010 31/03/2010 18/05/2010 06/08/2010 27/08/2010 10/09/2010 01/10/2010 22/10/2010 05/11/2010 19/11/2010 Zinc content Zinc - mg/L (TSF decant pond) 03/12/2010 21/12/2010 12/01/2011 09/02/2011 23/02/2011 09/03/2011 23/0
Slide 12: Lead content TSF and regional groundwater
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 01/04/2009 20/07/2009 01/09/2009 01/01/2010 10/02/2010 17/03/2010 31/03/2010 18/05/2010 06/08/2010 27/08/2010 10/09/2010 01/10/2010 22/10/2010 05/11/2010 19/11/2010 Lead - mg/L (TSF decant pond) Lead content 03/12/2010 21/12/2010 12/01/2011 09/
Slide 13: FMEA Risk Assessment of Leakage of TSF over 1000 years
3. FMEA Risk Assessment of Leakage of TSF over 1000 years Worst case scenarios modelled over 1000 years TSF decant water quality, not seepage water quality no HDPE liner at base decant pond at highest volume (17ML) Haven’t allowed for proven ability of the soil to neutralise some acidity a
Slide 14: 1000 year groundwater modelling
3. 1000 year groundwater modelling TSF “worst case” scenario Modelled zinc plume – worst case scenario of TSF liner failure • TSF decant water • No HDPE liner • 17ML water in decant pond • No adsorption of metals by soils 14
Slide 15: Ecosystem Function Analysis
4. Ecosystem Function Analysis First annual EFA survey reported in 2014 MARCR Assesses Landscape Function, Erosion, and Vegetation Compared against control site at Betty Westwood Reserve 15
Slide 16: EFA transect sites
EFA transect sites “…Use of Ecosystem Function Analysis– Provides evidence that a site is recovering from an impact (such as mining) Provides a diagnostic tool Provides evidence that sustainability is being achieved” Ministerial Guideline 21: Field guide for landscape function analysis for
Slide 17: Ecosystem Function Analysis 2014 key points
4. Ecosystem Function Analysis 2014 key points Soil surface indices positive Erosion in transects limited Vegetation growing well Recommendation: two transects at each site to improve statistical strength Comparison of stability, infiltration and nutrient cycling across the site 80 70 60 Con
Slide 18: Outlook - 2015
Outlook - 2015 Environmental monitoring as per Care and Maintenance Plan National Pollution Index report Ecosystem Function Analysis Closure Plan feedback incorporation Infill planting during winter 2015 18
Slide 19: Thanks to Charles for his contributions from 2007 - 2015
Thanks to Charles for his contributions from 2007 - 2015 19