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CCG Meeting Angaston 3 rd December 2008

CCG Meeting Angaston 3 rd December 2008. Penrice CCG Meeting Action Arising. BLAST MONITORING Chris Linke Monitor Site Blast Data 21/11/09 60 holes located in south east pit face Vibration 0.53 mm/sec (Aust Std 5.0 mm/sec) Overpressure 95.4 dBL (Aust Std 115 dBL)

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CCG Meeting Angaston 3 rd December 2008

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  1. CCG Meeting Angaston 3rd December 2008

  2. Penrice CCG Meeting Action Arising BLAST MONITORING Chris Linke Monitor Site Blast Data 21/11/09 60 holes located in south east pit face Vibration 0.53 mm/sec (Aust Std 5.0 mm/sec) Overpressure 95.4 dBL (Aust Std 115 dBL) Salem Road Monitor Site (near Linke driveway entrance) Vibration 1.32 mm/sec Overpressure 106.6 dBL Further monitoring - 3/12/08 and the next week then relocation to south west of the mine

  3. Penrice – CCG Meeting • Blasting – Draft • Environmental Outcome • No nuisance to adjacent residents and sensitive receptors per definition of the relevant Australian Standard, currently AS2187.2 (2006) • Blasting will occur on weekdays (excluding Public Holidays) between 9.00 am and 4.30 pm. • Where the number of blasts in any year is estimated to be more than 20% above the average of the last 5 calendar years annual blast number, this will be communicated to the PCCG and community. • Environmental Criteria for Measurement • Blasting complies with Australian AS 2187.2 (2006) for overpressure (noise) (115dB environmental limit with 5% to a maximum of 120dB) and vibration levels (environmental limit 5 mm/s with 5% to a maximum of 10 mm/s) • Not more than 1% of the annual blasts will be out side these times • Strategies for Management • Compliance with Penrice Mine Operating Manual (procedure reference QFM2) • Overpressure and vibration levels will be measured during all scheduled blast activities • Blast modelling will be introduced using available industry technology. • Penrice will engage with community on alleged blasting damage to private infrastructure and investigate. Any mitigation measures will be determined and implemented based on investigation outcomes. • Ongoing review of new blasting technology to reduce vibration and air pressure • Ongoing training of blast technicians • Visual blast records and monitoring data maintained for each blast event • Annual audit of blast procedures by external parties

  4. Penrice CCG Meeting Action Arising • Barossa & Light Landscape Study 2005 • Study recommendations will be a part of a regional/council consultation process in 2009 • Particular emphasis of quarry impact • Importance of specific areas/features • Recommendations 5, 6, 7, 8 • Geotechnical Report • Initially supplied to PIRSA

  5. Penrice – CCG Meeting • Key Overburden Issues • 2007 recognized insufficient space for overburden • Storage overburden in the east area since early 1990’s • Mostly for low grade limestone in future years • Space impacted by height cap of the eastern storage area • 2M mt behind minimum extraction plan (Maptek) requirements • 4M mt planned in 2008 of both schist & low grade limestone to economically match out the internal haul fleet capacity • Storing low grade limestone in the north end of pit that will increase in coming years as the west face storage area is crushed to consume this inventory – 3M mt. • Extraction volumes limited in the last 5 months due to space issues • Consistent at all meetings with space issue and time constraints

  6. Penrice – CCG Meeting MAPTEK 30 year Mine Plan Increased overburden requirements due to geology & ore quality of high grade limestone, 2008/09 plan 4m mt with less in later years Of the 12.5M mt extracted in 4.4 years, 10m mt is schist

  7. Penrice – CCG Meeting Schist Overburden Extraction Volume (M mt)

  8. Penrice – CCG Meeting • CCG - MPL and Whole of Mine review • Gerlach land purchase contracted in December 2007 • In discussions with PIRSA since March 2008 on the MPL and the process with statutory consultation completed in August 2008 • Agreed with PIRSA for CCG to review environmental outcomes for whole of mine operation (not just the west MPL area) • This process will take another 6 -9 months

  9. Penrice – CCG Meeting • Visual Amenity • Penrice is: • Completing the profiling of the whole east and north faces to fit the hill line land form • Looking to find a temporary visual solution to the west face of east while crushing the low grade limestone inventory • It is not standing still and has limits on the capacity to remedy all areas of concern

  10. Penrice – CCG Meeting • Visual Amenity • In the meantime Penrice is: • Completing the profiling of the whole east and north faces • ( see photos) • Looking to find a temporary visual solution to the west face while crushing the low grade limestone inventory • It is not standing still and has limits on the capacity to remedy all areas of concern

  11. Penrice – CCG Meeting • Visual Amenity • In the meantime Penrice is: • Completing the profiling of the whole east and north faces • ( see photos) • Looking to find a temporary visual solution to the west face while crushing the low grade limestone inventory • It is not standing still and has limits on the capacity to remedy all areas of concern

  12. Penrice – CCG Meeting • Strategic Visual Amenity Plan Development • Visual Amenity is established through land form and vegetation, Oxigen are working up a strategic plan for the site covering • Existing Mine Area • Increase plantings and renew poor or dead vegeatation and under-story plantings to increase wildlife habitat – see map • Eastern Area • Estimated 30,000 trees/shrubs required for completionof eastern face at 12000/annum • Plantings on the north & east faces to RL400 in progress • Grass west face of eastern mound - low grade limestone and iron stone road benches • Western Area • Interim MPL proposal • Outside Mine Boundary • In conjunction with council/residents/land owners agree a tree planting regime. • (Suggested areas include areas of Stockwell Road & Penrice Road)

  13. Penrice – CCG Meeting • Interim WEST MPL (South-block) • This will allow PSP to continue mine operations for 9 – 12 months • This time will be needed to review all the environmental outcomes for the whole of mine site by the CCG and • To investigate other OB disposal options that are • economical • operationally practical and • do not limit the ability to extract high grade limestone • OXIGEN plan • Lease conditions are as detailed by PIRSA • A MARP with environmental outcomes and criteria are being finalized to match the newly issues lease conditions • Penrice is committed to finding solutions to community concerns

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