angas zinc mine mining and rehabilitation...

Angas Zinc Mine

Mining and Rehabilitation Compliance

Report

Strathalbyn, South Australia

2011

Prepared for the Department of Manufacturing,

Innovation, Trade, Resources and Energy

(DMITRE)

Angas Zinc Mine Mining and Rehabilitation Compliance Report 2011

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Project Name: Angas Zinc Mine

Owner/Operator: Terramin Australia Limited

ABN 67 062 576 238

Primary contact: Mr Ian Holman

General Manager – Operations

Terramin Australia Limited

Callington Rd

Strathalbyn South Australia 5255

(t) + 61 8536 5972

(f) + 61 8536 5951

Tenements: ML6229

Commodities to be mined: Reporting Period:

Zinc and Lead 1st January 2011 to 31st December 2011

This Mining and Rehabilitation Compliance Report (MARCR) has been prepared using Regulatory Guideline No. 3 –Preparation of a Mining and Rehabilitation Compliance Report (MARCR) for Mining Operations

Revision 1.4 March, 2009 issued by DMITRE.

Document Approval Status

Prepared By Assembled By Approved By

Name Venicia Giannasi Venicia Giannasi Ian Holman and Matt Daniel

Signatures

Date 30-3-2012 30-3-2012 30-3-2012

Document Number

Issued To Format Date

TZN-2145-V1 DMITRE Adobe 30-03-2012

TZN-2145-V1 DMITRE Adobe and Hardcopy 30-03-2012

TZN-2145-V1 SCCC Members Adobe and Hardcopy 30-03-2012

TZN-2145-V1 Strathalbyn Library Adobe and Hardcopy 30-03-2012


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Executive Summary The Angas Zinc operation achieved good production levels in 2011, exceeding 2010 results by 2%. Underground development advanced to 10,217metres in total, with 2563 metres developed in 2011. Development in 2011 comprised advance on 9 levels between 120mL and 320mL. The Rankine Decline was developed to approximately 335mL. Environmental management activities in 2011 were based largely on the monitoring and reporting of environmental criteria stated in the approved Program for Environmental Protection and Rehabilitation (PEPR) (Burgess, J. et.al, 2007) with all non-compliances detailed in Sections 5 and 7 of this report. Terramin were issued an Environmental Direction on the 28

th of October by DMITRE to ultimately ensure no

head of water on the TSF single liner by the 31st of December 2012. On-site water management remained

priority to reduce the volume of the TSF ponded water to the PEPR directives (RL <68m or surface area <15,000m

2).

Rehabilitation activities throughout 2011 included planting of native tree species, native seed collection and continual implementation of the weed and pest management plan. Terramin continued to build its relationship with the local community through its involvement with the Strathalbyn Community Consultation Committee (SCCC), distribution of the quarterly community newsletter, providing educational presentations, site tours to various groups, sponsorships and donations. Community complaints and feedback continued to be addressed promptly and professionally. The community concerns were predominately a result of surface noise and underground blasting activity.


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Table of Contents

Executive Summary ........................................................................................................... 5

1 Description of Mining Activities .............................................................................. 10

2 Ore Reserves & Mineral Resources ........................................................................ 11

3 Rehabilitation & Environmental Management Activity .......................................... 12

3.1 Environmental Management ................................................................................................................ 12

3.2 Water and TSF Management ................................................................................................................ 13

3.3 Weed and Pest Management ............................................................................................................... 14

3.4 Revegetation .......................................................................................................................................... 14

3.5 Proposed Activities for 2012 ................................................................................................................ 14

4 Operations Summary Table ..................................................................................... 16

4.1 Disturbance & Rehabilitation Activities .............................................................................................. 17

5 Compliance with Outcomes ..................................................................................... 18

6 Other Issues .............................................................................................................. 32

6.1 Public Liability Insurance ..................................................................................................................... 32

7 Rectification of Non-compliances ........................................................................... 32

8 Management System Reviews ................................................................................. 35

9 Fit for Purpose Reviews of Plant, Equipment, Infrastructure and Other Facilities 35

10 New Environmental Hazards ................................................................................ 35

11 Incidents and Third Party Complaints ................................................................. 36

11.1 Significant Incidents......................................................................................................................... 36

11.2 Environmental and Community Incidents ..................................................................................... 37

11.3 Third Party Complaints .................................................................................................................... 38

12 References ............................................................................................................. 41

Appendix A - Surveyed Mine Workings ......................................................................... 42


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Appendix B - Public Liability Insurance Certificate ...................................................... 55

Appendix C - 2011 Subsidence Monitoring ................................................................... 56

Appendix D –Ground and Surface Water Monitoring Locations ................................. 57

Appendix E: Dust Contour and Monitoring Location Maps ......................................... 58

Appendix F – Surface Water Quality Data ..................................................................... 60

Appendix G – Groundwater Bore Levels ....................................................................... 61

Appendix H – Groundwater Quality data ...................................................................... 62

Appendix I – Annual Photo Monitoring .......................................................................... 63

Appendix J – Topsoil Stockpile Monitoring Data .......................................................... 65

Appendix K – Summary of Waste Disposal 2011 .......................................................... 67

Appendix L – TSF Leak Detection System Location..................................................... 68

Appendix M – TSF Seepage Drain (Double Liner System) Volume and Flow rate ..... 69

Appendix N - TSF Seepage Drain (Leak Detection System) Chemical Composition Data ................................................................................................................................... 70

Appendix O – Noise Contour Maps ................................................................................ 72

Appendix P – Noise Monitoring Data ............................................................................. 74

Appendix Q – Blast Monitoring Data .............................................................................. 79

Appendix R – Dust Deposition Monitoring Data ........................................................... 80

Appendix S: High Volume Dust Monitoring Data .......................................................... 82

Appendix T– Personnel Inhalable Dust Monitoring ...................................................... 83

Appendix U – Regional Rainwater Tank Lead Content Data ........................................ 84

Appendix V – Daily Log Sheets ...................................................................................... 85

Appendix W – Economic Impact .................................................................................... 87

Appendix X – Strathalbyn Mining Lease Flora Assessment (Executive Summary) ... 89


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Appendix Y – GCMP Letter of Compliance .................................................................... 90

Appendix Z – Weed Survey 2011 .................................................................................... 95

Appendix AA – Arising issues in ATC Williams TSF annual surveillance audit report ......................................................................................................................................... 103

Appendix AB - SAROS Review of Air Overpressure Monitoring ............................... 104

Appendix AC- AECOM, AZM Updated Environmental Noise Assessment ............... 111


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1 Description of Mining Activities To the end of December 2011 the Angas Zinc Mine (AZM) had advanced underground development to some 10,217 metres, with 2,563 metres developed in 2011. Development in 2011 included development on 9 levels between 120mL and 320mL. The Rankine Decline was developed to approximately 335mL. Surveyed plans of the current mine workings are included in Appendix A. A secondary means of egress in the form of a positively pressured clean air ladder way extends from the surface to the 320 level, with access available from each level. The primary ventilation system has been established through ventilation rises to the 320 metre level. The primary ventilation system and secondary egress will be completed to the 340 metre level in the first half of 2012 as production extends to lower levels. In the coming 12 month period, underground development is planned to extend a further 645 metres, to complete the 340 meter level. The cemented and un-cemented rock backfill of mined stopes continued in 2011 with 160,000 tonne of rock fill placed. Paste (cement stabilised thickened tailings) back-filling commenced utilising a contractors plant from September 2011 with 51,600m

3 placed in 2011. A new Paste fill plant will be constructed and

commissioned in the first half of 2012 to replace the rented contractors plant. The mining schedule in the MARP has been reviewed based on the updated ore resource and reserve information, summarised below in Table 1. Table 1 – Updated production schedule for Angas Zinc Mine

Physicals Units 2012 2013 2014 Total (LOM)

Ore mined tonnes 427,995 426,917 355,047 1,209,959

Zn+Pb % 12.86 10.91 9.08 11.06

Zn % 9.20 7.47 6.41 7.77

Pb % 3.66 3.44 2.67 3.29

Cu % 0.22 0.2 0.18 0.20

Ag g/t 37.09 34.71 29.04 33.89

Au g/t 0.55 0.43 0.40 0.46

Fe % 20.75 18.93 17.48 19.15

Development metres Operating metres 467 222 0 689

Capital metres 179 753 0 932

Total tonnes mined (including waste) tonnes 446,977 491,637 355,047 1,293,661


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2 Ore Reserves & Mineral Resources A revised estimate of Ore Reserves and Mineral Resources at the Angas Zinc Mine, based on data available as at 30 June 2011, has been prepared by the staff of Terramin Australia Limited. The estimate is prepared and reported in accordance with the Australasian Code for Reporting of Mineral Resources and Ore Reserves, December 2004 (JORC code).

The new estimate utilises the resource model prepared in May 2011 and incorporates additional drilling and progressive data from mining.

Table 2: Summary of Ore Reserves and Mineral Resources for Angas Zinc Mine

Ore Reserves as at 30th June 2011

Mt %Zn %Pb %Cu Ag g/t Au g/t

Probable 1.29 7.22 2.87 0.22 31 0.50

Total 1.29 7.22 2.87 0.22 31 0.50

Mineral Resources as at 30th June 2011

Mt %Zn %Pb %Cu Ag g/t Au g/t

Indicated 0.57 4.44 1.69 0.14 18 0.36

Inferred 0.27 3.1 1.5 0.1 20 0.3

Total 0.84 4.0 1.6 0.1 19 0.3

Notes:

1. The estimate is based on the resource model as at 15th May 2011 with the Reserve cut-off date as at

30th June 2011.

2. Indicated Resource and Probable Reserve grades are quoted at two decimal places (except silver). Inferred Resource grades and totals including Inferred are rounded to one decimal place (except silver). All tonnages are rounded to the nearest 10,000 tonnes.

3. The Indicated Resource is exclusive of those Resources converted to Probable Reserve. 4. Total depletion by mining in the period 1

st July 2010 to 30

th June 2011 was 380,000 tonnes.

5. Metal prices (USD) used for the Reserve estimate are in line with Bloomberg‟s 2012 Consensus Forecast (May 2011) Zn 2,450/t, Pb 2,650/t Cu 10,062/t, Ag 34/oz, Au 1,499/oz. An exchange rate of USD/AUD 0.98 was used.

6. Recoveries used in the Reserve estimate are Zn 75%, Pb 71%, Cu 72%, Ag 51%, Au 79%. 7. Resource modelling assumptions are essentially unchanged from the previous estimate in April 2010

with the following exceptions: a. Two additional diamond drill holes (giving a total of 266 holes) and information from

underground mining and development has been utilised, leading to some further revisions to the geological model.

b. Extensive underground mapping and additional sample data obtained from channel samples and from sludge drilling was used to assist with defining mineralisation wireframes. The analytical data obtained from this sampling was not used in the Mineral Resource estimate.

8. Reserve estimation assumptions are unchanged from the last estimate in June 2010 with the following exceptions:

a. A cut-off grade of 4.0% Pb+Zn was used for stoping (previously 3.9%). A cut-off grade of 2.5% Pb+Zn (unchanged) was used for development, where this development was required to access stoping areas of a higher grade.

The information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Mr Eric Whittaker. The information that relates to Ore Reserves is based on information compiled by Mr Ian Holman. Mr Whittaker is a Member of The Australasian Institute of Mining and Metallurgy and Mr Holman is a Member of the Institute of Materials, Minerals and Mining. Mr Holman is Chief Engineer and Mr Whittaker is Principal Resource Geologist and both are full time employees of Terramin Australia Limited. Both have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the ‘Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves’. Mr Whittaker and Mr Holman consent to the inclusion in the report of the matters based on his information in the form and context in which it appears.


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3 Rehabilitation & Environmental Management Activity Throughput during 2011 exceeded 2010 results by 2%. The 401,496 tonnes milled yielded 43,738 tonnes of zinc concentrate and 18,079 tonnes of lead-copper-precious metals concentrate. There were no major changes to existing internal environmental management systems or documentation.

3.1 Environmental Management Environmental monitoring and reporting has been undertaken as per the criteria outlined in the 2007 approved PEPR (Burgess.J et.al, 2007). Deviations from the PEPR and other regulatory guidelines are outlined in Sections 5 and 7 of this document. In 2011, efforts were focused on rectifying areas of non-compliance or those in need of improvement. These have been summarised below;

A review of the approved PEPR commenced as requested by DMITRE, however was subsequently put on hold due to the Environmental Direction taking precedence (refer to section 3.2).

Noise bunding was installed at the Pugmill (paste fill plant) to assist with noise suppression. Temporary hay bale bunding was installed at exploration drill sites.

AECOM (independent acoustic specialists) undertook a review of the current AZM noise model in

May 2011 as modifications to the gearbox of the ball mill had been made (Appendix AC).

A PM10 dust monitoring trial commenced in October for a three month period. Monitoring ceased at

the end of January 2012 with Terramin awaiting the subsequent report from S.A Environmental Pollution Monitoring Services. The monitor was erected at the same location as the northern Hi-Volume sampler (Appendix E).

On-site water truck usage increased over the dryer months to optimise dust suppression. Ongoing

discussions with the Environmental Protection Authority (EPA) on additional dust investigations to determine if offsite total suspended solid exceedances are correlated to mining activity.

An ecological assessment of the Burnside creek wetland was undertaken to identify; flora species, biodiversity value and the general threshold of the plant community in relation to flooding. Recommendations were provided for managing the wetland plant community (executive summary Appendix X). A surveyor map was provided to illustrate proposed water depths of the wetlands.

An on-site control burn in conjunction with Country Fire Service (CFS) took place in September to

reduce fuel loads and suppress the weed seed bank.

The re-injection modelling and discharge predictions were reviewed and updated by Australian

Groundwater Technologies. Two new re-injection bores were drilled in the south west paddock of the mining lease. Re-injection licences for these bores have been submitted to the relevant government bodies and are awaiting approval.

Waste oil management improved with installation of an appropriate waste oil storage tank.

A new on-site weather station was installed in December.

A rubbish dump licence has been obtained by Terramin for the AZM site with a view to optimise

waste management.


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3.2 Water and TSF Management An Environmental Direction was issued to Terramin on the 28

th of October 2011, setting target dates to

ultimately ensure no head of water on the Tailings Storage Facility (TSF) single liner by the 31st of December 2012. Work to meet all required times lines under this Environmental Direction is on-going.

An additional water treatment facility (Osmoflo #2 Reverse Osmosis (RO) rental unit) was commissioned in November and water levels of the TSF decant pond dropped by 260mm by the end of December 2011 (figure 1). A new de-silting reinforced concrete pond was commissioned in December (photo 1).

The new Osmoflo #2 RO rental unit, Veolia #1 RO and the filtration plants are used to treat the mine dewatering stream. The TSF water is pumped from an area near the TSF decant tower directly to the dedicated RO treatment unit (Veolia #2). The raw water no longer overflows into the process pond since the commissioning of the new water treatment facilities. Silt is managed by the additional 600m

3 de-silting

facility.

Figure 1: TSF Decant Pond water level (2010 – 2011)

Photo 1: New de-silting ponds


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An annual surveillance report of the TSF was completed in early 2011 by ATC Williams. This report concluded the Angas Zinc Mine TSF does not present any immediate risk to the safety of the personnel, downstream population, environment or the ongoing operations of Angas Zinc Mine. A number of non-conforming issues were raised, however, these issues have been, or are in train to being addressed (Appendix AA).

Terramin continued its leak detection and TSF monitoring program beyond regulatory requirements to provide assurance of the integrity of TSF. These parameters in conjunction with many other daily, weekly and monthly logged items are examined in the annual TSF surveillance audit which indicates that all parameters are within normal operating expectations. There is no indication of fluid breaching the TSF.

3.3 Weed and Pest Management Implementation of the Weed and Pest Management Plan (COOE Pty Ltd, 2010) continued in 2011 through an effective weed spraying program. This program incorporated both selective spraying of weeds in revegetated areas and broad acre spraying of paddocks. Focus on targeting declared species remained priority, including species such as Horehound (Marrubium vulgare), Salvation Jane (Echium plantagineum) and Onion Weed (Asphodelus fistulosus). Slashing and mowing continued as ongoing maintenance to both assist in weed management and fire risk reduction. Fox baiting was instigated in September, however, prior to commencement, approval from neighbouring landowners was sought and information regarding the product used and time frame of baiting was provided. Rabbit fumigation commenced in October focusing on known problem areas around the mining lease.

3.4 Revegetation A total of 300 native plants were planted on the northern side of Callington road (opposite the visitors viewing area) and 300 plants outside the front entrance to replace fatalities. These areas continue to be maintained for visual amenity purposes (Slashing, spraying etc.) Seed collection of native flora was undertaken in and around the mining lease so local provenance seed can be used for future revegetation works. Species collected include; Austrostipa (Spear Grass) Austrodanthonia (Wallaby Grass) Acacia pycnantha Acacia brachybotrya Callitris gracillis Callistemon rugulosa Melaleuca acuminata Eucalyptus Fasciculosa Allocasuarina verticillata

3.5 Proposed Activities for 2012 Proposed activities for 2012 include;

Heavy focus on water management working towards the Environmental Direction requirement to reduce the TSF decant pond water level to ensure no head of water on the single liner (RL 68m) by the 31

st of December 2012.

Completion of required documentation as part of the Environmental Direction.

Expected re-commencement of the PEPR review in 2012, including production of a TSF

Rehabilitation Plan, Mine rehabilitation Plan and a Closure Plan.

Monitoring of the TSF rehabilitation trial will continue throughout 2012.

On completion of the PM10 trial (January 2012) a report on the trial findings will provide insight to the

status of PM10 dust at Angas Zinc Mine.


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Direct seeding has been scheduled for the eastern and western paddocks during winter.

Update the irrigation plan and implement.

Conduct regional dust review as requested by the EPA to establish controls points and ensure offsite

total suspended particulates exceedances are not related to mining activity.

Optimisation of boxcut vegetation cover

National Pollutant Inventory (NPI)

Weed survey in July and December

Continued optimisation of on-site waste management and recycling


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4 Operations Summary Table Table 3 displays the areas in each domain within the mining lease that have been disturbed and rehabilitated. The domain areas are illustrated in Figure 2.

Figure 2: Mine lease divided into discrete domains

Table 3: Operations Summary Table (all areas are approximate)

Domain (Ha) Last reporting period (Ha) Current reporting period

(Ha) Proposed next 12 months

(Ha)

Disturbed Rehabilitated Disturbed Rehabilitated Disturbed Rehabilitated

North Domain (22.7)

0.2 0.2 0 0 0 0

Central Domain (23.3)

0.3 2.5 0 0 0 0

South Domain (26.7)

0.4 10.4 0.9 0.9 0 0

Buffer Domain (14.8)

0.9 0.9 0.7 0.5 0 5


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4.1 Disturbance & Rehabilitation Activities

4.1.1 North Domain

An IP line with pots was placed at a depth of approximately 1 metre. Minimal disturbance was caused from this activity. The auger used by the IP crew, does not qualify as “declared equipment” under Part 1 of the South Australian Mining Act and therefore its use falls outside of Part 9 that covers restoration of land (and compensation to land owners).

4.1.2 Central Domain

A rehabilitation trial for the TSF was established to the east of the visitors viewing area in September will remain on-going over the following year (photo 2). The trial is set up to assess cover thickness, soil moisture and the establishment of vegetation. The layers comprise of a base of HDP liner (as used on the TSF) covered by a 0.1m granular protective layer, the subsoil at two different thicknesses (0.6m and 1m) and 0.1m of topsoil. The two blocks (0.6m and 1m subsoil thicknesses) have been divided into eight 20 X 10m blocks and planted with an oats pasture commonly used in the Strathalbyn region. Five soil moisture monitoring stations have been installed at different subsoil thicknesses. The remaining monitor has been utilised as a control in nearby undisturbed ground.

Photo 2: TSF Rehabilitation Trial

4.1.3 South Domain

Nine diamond drill holes for exploration purposes were drilled, with all sumps cleaned and rehabilitated. No holes have been backfilled so geophysical instruments can run down them at a later stage.

4.1.4 Buffer Domain

Two new water bore holes were drilled in this area in 2011 for potential re-injection. An application was submitted and is awaiting approval. Five diamond drill holes for exploration purposes were drilled in this area, with all sumps cleaned and rehabilitated. No holes have been backfilled so geophysical instruments can run down them at a later stage.


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5 Compliance with Outcomes Tables 4 & 5 detail Terramin‟s compliance status with the environmental, social and economic outcomes stated in the approved PEPR and DMITRE mine lease conditions. Note; table 4 covers all outcomes stated in section 7 of the approved PEPR whilst table 5 details items identified as either compliance issues or points of interest in the DMITRE mine lease conditions which are not covered in table 4.


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Table 4: Approved PEPR (Burgess.J et.al 2007) compliance with outcomes Groundwater and Surface Water (MARP 7.2)

Outcome Criteria Compliant Comments

No adverse impact to the supply of water by the mining operations to existing users and water dependent ecosystems.

Surface water samples taken during rain events where the Angas River flows at 2 potential discharge locations marked on Figure 62 in the PEPR, will be compared to 2 upstream control sample points shown in Figure 62 in the PEPR and demonstrate that potential contaminants in all discharge locations is below mean control level. There are 4 monitoring locations planned at the lease boundaries, located at points where surface discharge is likely during rain events.

Yes

Surface water was sampled monthly throughout 2011 at the Hogben, Bridge, Croser and Ford locations (Appendix D). These sample sites are located both upstream and downstream on the Angas River. Note; all storm water collated from the „dirty zone‟ of the mining lease (mill, workshop, ROM Pad) is directed to water treatment facilities, whilst all stormwater collated within the „clean zone‟ is directed to a dam located on the south west corner of the TSF. No stormwater breached the mining lease in 2011. A number of parameters recorded results above the „average plus 2 standard deviations‟ (2SD) criteria of the PEPR across all sampling sites throughout the year. Results above the 2SD commonly occurred at the upstream control points Bridge and Hogben indicating no relation between mining activities and elevated results. No events occurred to create potential for mine-related contamination. A peak in turbidity (20NTU) occurred at the Croser monitoring site in December, however, low water levels and flows were observed at this sample site, a likely influence to this increase. Note; statically 97.5% of data will fall within two standard deviations of the baseline mean. Subsequently it is anticipated that 2.5% of the data over the year will be non-compliant.

Groundwater will be sampled quarterly at 4 locations within and on the lease boundary and 4 locations adjacent to the lease, as marked on figure 62 of the PEPR. Water level will be measured against modelled groundwater level variation (figure 37 in the PEPR). Contaminant results will show no detriment in water quality between bores within the lease and external to the lease

Yes

Monitoring bores AWE1, LG1, LG2 and RG7 are now dry. The five bores with measureable water levels have remained stable over the year. All water levels were well above the predicted aquifer drawdown after seven years of operation. The lowest water level recorded was 28 meters below the surface at bore RG4, this measurement has remained relatively constant throughout 2011 (Appendix G).


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Groundwater and Surface Water (MARP 7.2)

Outcome Criteria Compliant Comments Contaminants to be analysed (both for surface and groundwater) will include Pb, Zn, As, Cd, Fe, Mn, pH, EC, microbiological content (mine water only) and turbidity.

Yes Groundwater contaminants were measured monthly throughout 2011 (Appendix H). All parameters were within the 2 standard deviation of the mean. No E.coli was detected in the mine water tested in both August and December 2011.

Erosion (MARP 7.3) Outcome Criteria Compliant Comments

Stabilise disturbed areas and prevent sediment from leaving the site.

Annual photo monitoring of existing and new disturbed areas (10 as shown in figure 66 of the MARP plus others as required), will show progressive improvement in landform stability for existing sites and show no loss of sediment for new sites.

Yes Limited improvement has been noted. Photos of all ten sites have been included in this report (Appendix I). A number of minor erosion issues on the TSF were identified in the 2011 annual surveillance report. The erosion has been repaired and regular monitoring of these sites will continue (Appendix AA).

Topsoil (MARP 7.4)


Ensure that topsoil quality and quantity are protected

Store topsoil in mounds of no more than 3 m Annual photo monitoring of all soil stockpiles will show progressive vegetation cover is established and no loss of topsoil.

Yes Appendix J

All topsoil stockpiles will be sampled initially upon construction and then annually tested for As, Cd, Cn, Pb, Mn, Hg, Ni, Zn, pH, EC,TOC and exchangeable cations Na, Mg and Ca. The results will show no significant deviation from the initial measurements

Yes

Sampling was undertaken in October 2011, however, all required parameters were not measured. Repeat analysis occurred in February 2012 for parameters which were not measured in 2011 (Appendix J). 6 samples were taken at different locations on the topsoil stockpile with the average of these sites used for comparison to the initial stockpile measurements. The majority of the parameters measured were higher than the 2007 initial mean with the exception of pH, Arsenic, Mercury and Cadmium. All parameters remain well under the NEPM guidelines for ecologically-based investigation levels for soil (NEPC, 1999), therefore of no concern. Note; initial Arsenic levels were higher than the NEPM investigation levels, indicating high metal levels were present prior to mining activity.


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Vegetation (MARP 7.5)

Outcome Criteria Compliant Comments Avoid permanent loss of biodiversity through clearance of native vegetation.

Clearance in accordance with native vegetation management plan (Section 7.5). This will be confirmed by undertaking survey of vegetation after mine closure, to compare with detailed baseline survey presented in the native vegetation management plan.

N/A

No native vegetation cleared in this reporting period

Implementation of SEB plan presented in section 8 will be assessed and reported annually.

N/A

No requirement to report as no vegetation cleared

Waste Disposal and Hazardous Substances (MARP 7.7)


No pollution is caused by waste products and hazardous materials.

As per Section 7.2 and Section 7.4 of the PEPR, Groundwater, Surface Water and Topsoil.

Yes

If a spill of fuel, oil or hazardous chemical occurs outside bunded area, area will be remediated and sampling will be conducted to demonstrate soil quality comparable to background levels.

Yes A fuel leak from a light vehicle was reported in June 2011. The remaining fuel tank contents were drained and a lime mix spread on the ground to soak up the spill. The spill estimated between 10 - 15 litres. The vehicle was immediately placed out of service and repaired by maintenance.

Records of weekly site inspections for waste management.

Yes Weekly waste site inspections are conducted and reported to the Environmental Superintendent. Inspections involve identifying;

general rubbish/housekeeping

waste requiring appropriate disposal

adequate bunding of chemicals and oils

chemical and oil spills No major issues were reported in 2011

Records will be maintained to demonstrate disposal of all potentially polluting waste is offsite to an approved EPA site.

Yes All waste removed from site for disposal or recycling during the reporting period has been summarised in Appendix K. All potentially polluting waste is disposed offsite to an approved EPA site.


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Acid Mine Drainage (MARP 7.8)


No contamination of natural water drainage systems, streams and rivers, groundwater, land and soils occurs either on or off site resulting from permanent disposal or temporary storage of mine ore or waste material

As per Section 7.2 and Section 7.4 of the MARP. Groundwater, Surface Water and Topsoil.

Yes

Records will be kept of volumes and composition of water recovered from the TSF leak detection system to demonstrate that the system is working as per design.

Yes

The TSF seepage drains (leak detection system) are designed to intercept leaching through the primary liner to reduce head pressure on the secondary liner, subsequently; increased flow correlates with increased head pressure. Locations of these seepage drains are in Appendix L. Volumes and flow rates of the seepage drains were monitored on a weekly basis during 2011 (Appendix M). Water flows from drain 4 commenced in July 2011, whilst flows from drains 3 and 5 remained relatively constant. An inverse correlation between Drains 1 and 2 were observed throughout 2011. An increase or decrease at either drain was dependant on tailings deposition in the TSF and location of the decant pond water. Chemical analysis of the water collected through the seepage drains was undertaken quarterly (Appendix N). All data is thoroughly analysed by an independent consultant (ATC Williams) and no unusual trends were identified. Four piezometers are located to monitor from the top to the base of the TSF downstream wall. These are monitored on a weekly basis with a device to detect the presence of water. No water was detected in 2011.


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Traffic (MARP 7.9)


No impacts offsite are caused by accidents, noise, dust and dragout by traffic from or to the mine site.

Noise as per MARP Section 7.10

No

Refer to Section 7 of this report

Dust as per MARP Section 7.12

No

Refer to Section 7 of this report.

Dragout as per Section 7.2 MARP (Surface water) plus no visible dragout from the site entry exit or road damage, as demonstrated by records of daily inspections and monthly photo records.

Technical non-compliance

As stated in the Terramin 2010 MARCR (Hart, A. et. al. Mar 2011), dragout at the mine entrance requires reporting by exception only, no longer on a daily basis. There were no drag out issues observed throughout the 2011 reporting period.

Site security movement records will demonstrate compliance with agreed hours of operation from 7am to 10pm.

Yes Heavy vehicles can only enter the site between office hours (7am-6pm) as the remote access gate can only be opened via the office. All contractors are required to sign in and out of a daily log sheet before access on site is permitted. An example of a 2011 daily log sheet has been included in Appendix V, more are available upon request.

All accidents and near misses are appropriately and independently investigated and that investigation demonstrates the accident was not substantially caused by mine traffic.

Yes .

There were no known accidents or near misses caused by mining traffic. Strathalbyn police station were contacted, however, were unable to provide any information regarding accidents involving AZM traffic.


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Noise (MARP 7.10)

Outcome Criteria Compliant Comments No public nuisance from noise emanating from the operating site.

Noise monitoring at 6 points shown in Figure 64 of the MARP demonstrates compliance with EPA noise limits as defined in “Environmental Protection (Industrial Noise) Policy 1994” and successors. Currently 47dB(A) 7am -10pm, and 40dB(A) 10pm-7am). This monitoring will be on an as requested basis and quarterly. The quarterly measurements will be taken over 24 hours and will be taken on the first day of the month.

No

New methodology has been used throughout the reporting period as it was deemed a more suitable and practical method of assessing mine-related noise. Refer to Section 7 of this report. Noise monitoring data is located in Appendix P. Note; levels recorded at each location are heavily dependent on local conditions such as wind speed. Noise data logged during periods of wind speeds greater than 20km/hr are deemed invalid under the Environmental Protection Noise Policy 2007. September monitoring was deferred till November due to drill rig activity near the monitoring location and subsequent lack of available calibrated instrumentation from the supplier. Issues related to the December noise monitoring resulted in the requirement for additional monitoring in January 2012. The western monitor (adjacent to the boxcut) was within compliance throughout the majority of the monitoring periods. Largely, the peaks observed were directly associated with high winds, invalidating the results. A substantial peak on the 14th of November appeared to be associated with a nearby idling vehicle. A number of readings slightly over the modelled limit were observed in November between 5 – 6 am every day, associated with tanker re-fuelling. Constant noise levels over the modelled limit were observed at the eastern monitor (east of the mill) in 2011. After extensive investigation, it was concluded the current location of the noise monitor differed to the original modelled location. The average noise levels decreased by 4 dB(A) once the monitor was placed in the correct location; however, a small constant exceedance was still detected at night. Strategies to eradicate these exceedances are currently being investigated and include options such as additional bunding and noise blanketing. .


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Blasting (MARP 7.11)

Outcome Criteria Compliant Comments No public nuisance impacts from air blast and vibration caused by blasting.

Airblast and noise will be monitored for all blasts at the points marked on Figure 65 of the MARP for the construction and underground phases. Two blast monitors shall be used, one in the fixed location and the other roaming on the points shown in Figure 65 of the MARP.

No

645 blasts occurred in 2011. Vibration was monitored for 100% of these blasts. The paddock and residence monitors were out of service from July 10th to August 17th and October 1st to the 11th respectively due to routine equipment calibration. The roving monitor was erected whenever a fixed monitor was off-line. The paddock monitor was out of order various times throughout the year due to investigations and repairs. The residence monitor was unavailable during December due to geophone problems. SAROS personnel (blast monitor suppliers) were on-site in January 2012 and replaced all faulty equipment.

Vibration will not exceed 10mm/sec at any time, with no more than 5% of blasts in any one year to be within the range of 5-10mm/sec.

Yes No vibrations exceeded 5mm/sec during the reporting period (Appendix Q)

Airblast will not exceed 120dB Linear at any time, with no more than 5% of blasts in any one year to be within the range 115-120dB Linear.

Yes Airblast data has been included in Appendix O with 3% of blasts over 120dB(L) and 4% between 115-120dB(L). SAROS reviewed Terramin‟s air overpressure monitoring and concluded the requirement for air overpressure is negated given the depth of the underground workings. Therefore, overpressure is no longer a useful parameter for Terramin‟s operations (Appendix AB). The high overpressure readings appeared to be directly correlated to strong winds.

All boxcut and underground blasts exceeding 250kg charge weight will only be conducted between 1:30pm to 6:00pm.

No

Of the 118 blasts exceeding 250kg charge weight in 2011, three were recorded outside of the 1:30pm to 6pm allowable time window. No community complaints were received. These late stope blasts have been detailed in section 11.


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Public Health and Nuisance (MARP 7.12)

Outcome Criteria Compliant Comments No public health, loss of amenity and nuisance impacts to local residents from air emissions, dust and odour generated on site as a result of mining operations.

10 static dust deposit gauges (monthly data) and 2 HiVol dust samplers (continuous data) will be located as shown in Figure 63 of the MARP. Data from these will demonstrate:

TSP < 120 micrograms/m3 per 24 hr period

Lead < 0.5 micrograms/m3 per 24 hr period

PM10 < 50 micrograms/m3 per 24 hr period (5 exceedances allowed per year)

No

A three month PM10 monitoring trial commenced in October 2011 to assess the validity in continuously monitoring PM10 at AZM. The monitor has been erected at the same location as the northern Hi-Volume sampler. This is in line with PEPR requirements. The monitoring point location map is located in Appendix E. A health surveillance program monitors inhalable dust lead levels every quarter with all levels well below the exposure standards (NOHSC,1995). Inhalable dust is measured using an air-sampling pump with personnel selected based on their tasks undertaken in the underground and surface operations. Monitoring data has been included in Appendix T. TSP results exceeded PEPR limits at all gauges with the exception of 7 and 5 (located closest to mining activity) (Appendix R). Water truck usage on site for dust suppression explains these dust readings. Offsite gauges 11 (600m west of the gate) and 12 (paddock west of STEDS ponds) recorded the highest levels of TSP over the year. Both gauges are located in bare open areas and far from mining activity, subsequently; these results are unlikely to be attributed to the mine.

Lead deposition rates recorded over the quarter were well below PEPR criteria at all dust deposition gauges. Hi Vol TSP and particulate lead levels for the reporting period were within PEPR guidelines (Appendix S).

All 37 rainwater tanks identified in Appendix AE will be re-sampled annually for lead content and show no significant increase in lead levels from the baseline data presented in MARP Appendix AE.

Yes Regional rainwater tanks BL 3, 5, 8, 9, 13, 19, 36 recorded lead levels higher than the 2006 baseline data, however, only by 0.001mg/L. The tanks are still below the Australian drinking water guidelines of 0.01mg/L (NHMRC, 2011) hence the increases are not believed to be significant. The remaining tanks remained under or constant to the 2006 baseline data.


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Public Health and Nuisance (MARP 7.12)

Outcome Criteria Compliant Comments Within 3 months of the start-up of the ore

processing plant odour emissions will be measured at the locations listed below and this will demonstrate that the limits stated have not been exceeded and revise the odour dispersion model to demonstrate the predicted odour emission rates do not exceed those shown in Figure 59 of the MARP.

TSF pond: 550 odour units

TSF wet beach (winter): 13,000 odour units

TSF wet beach (summer): 3,800 odour units

Nearest residence Cs2 < 0.042 ppm

CS2 will continue to be measured at the nearest residence monthly.

Yes

CS2 monitoring was carried out at the nearest neighbour monthly throughout 2011 with a reading of 0 ppm being recorded.

Fire (MARP 7.13)


No unplanned fires on-site, and ensure control measures are in place to manage potential off site impacts.

No damage to public infrastructure or injuries/deaths resulting from fires sourced on site.

Yes

No unplanned fires were recorded in 2011

All unplanned onsite fires are investigated and this demonstrates they were appropriately managed and controlled.

Yes

No unplanned fires were recorded in 2011


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Geotechnical Stability (MARP 7.15)

Outcome Criteria Compliant

No damage to third party infrastructure and no injuries/deaths resulting from collapse of the underground workings.

It will be demonstrated annually that the underground workings have been constructed as per independently reviewed design (including backfilling of voids).

Yes .

See Appendix A for plans A Ground Control Management Plan (GCMP) letter of compliance was completed by an independent consultant (Appendix Y).

Geotechnical monitoring programme will demonstrate no unexpected subsidence. Lead indicators will be defined following the geotechnical peer review.

Yes

See Appendix C.

Surveyed plans and representative sections will be submitted annually to the Chief Inspector of Mines showing all mine underground workings and backfill volumes and any remaining stope voids.

Yes

See Appendix A for plans.

Callington Road and STED lagoons will be surveyed prior to underground development, and annually to demonstrate no subsidence likely to be as a result of mining has occurred.

Yes

See Appendix C.

No unplanned collapse of underground workings.

No .

There were no unplanned collapse of underground workings in 2011

Vertical Openings and Site Security (MARP 7.14)


No public injuries and or deaths resulting from unauthorised entry to the mine site.

All unauthorised entries to the mine site investigated and investigations demonstrate all reasonable and practical measures were in place to prevent entry (and injury, if applicable)

Yes No unauthorised entries were reported in 2011. Surveillance cameras were installed at the beginning of the year.

Records of monthly inspections of perimeter fence and vent raise evasse demonstrate they are maintained as designed.

Yes

Site inspections are conducted monthly in conjunction with the water and dust monitoring sampling. No irregularities regarding the perimeter fence were found. Regular site inspections confirmed the integrity of the evasse and all measures to prevent access to vertical openings were in place throughout 2011.


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Visual Impact (MARP 7.16)

Outcome Criteria Compliant Comments Minimise the adverse visual impact and maintain a clean, rubbish free site.

Annual photo monitoring at 10 sites to demonstrate visual amenity is improving.

Yes

Appendix I An additional 600 native tubestock were planted at the front entrance and the northern side of Callington rd.

No nuisance, inconvenience or loss of amenity to any person beyond the mine site caused by external lighting.

External lighting will be audited after construction by suitably qualified independent person, to demonstrate compliance with AS 4282-1997 “Control of the obtrusive effects of outdoor lighting”, and to demonstrate that all reasonable and practical measures have been undertaken to minimise light nuisance.

Yes

AZM has no issues with excessive lighting.

Fauna (MARP 7.17)


No net adverse impacts from the site operations on the native fauna on the lease area and adjacent areas.

Record and investigate all native fauna deaths or injuries onsite to demonstrate no contribution from mining activities.

Yes

Remains of a bat (possibly Chocolate Wattle Bat) were discovered underground in October. No other native fauna mortalities or injuries were reported in 2011.

Annual weed survey to demonstrate a decrease in weeds, pests and diseases from previous survey.

Yes

An annual weed survey was undertaken in December 2011. Seven permanent monitoring transects were established within the mining lease. Overall a low weed cover was observed as a result of both weed control efforts and seasonality (Appendix Z).


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Social Impacts (MARP 7.18)

Outcome Criteria Compliant

No net impact on social amenity and economic impact of the mine.

No reasonable complaints from the public concerning the mine operations. A complaints register will be maintained. All complaints will be investigated. A response will be provided to the complainant within 2 working days and reported at the next SCCC meeting.

No

20 complaints were recorded in 2011, down 53% compared to 2010 (43 complaints). Complaints have been detailed in Section 11.2 Table 11.

No power outages or water restrictions for Strathalbyn community caused by mine operations.

Yes

No power outages or water restrictions for the Strathalbyn community were caused by the mine operations during the 2011 reporting period.

The development of quantifiable criteria to measure social amenity and economic impact of mine will be determined in conjunction with the SCCC.

No

No measurable criteria yet developed. Economic impact has been represented by local spending and staff employment in 2011. A local spending analysis graph has been included in Appendix W, demonstrating spending distribution throughout numerous regions in 2011. 114 full time staff were employed by Terramin during 2011, 30% from Strathalbyn and 35% from the Adelaide Hills (Appendix W).

Aboriginal Heritage (MARP 7.19)

Outcome Criteria Compliant Comments No unauthorised disturbances to Aboriginal sites, remains or objects

Maintenance of records of complaints and any artefacts discovered.

Yes

No complaints have been received in regards to Aboriginal Heritage. No Aboriginal artefacts were discovered in 2011 on the AZM lease.


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Table 5: Compliance issues or points of interest from the DMITRE Mineral Lease (ML 6229) reported by exception

Mineral Lease ML 6229

Condition Comment

18. The lessee must report on an annual basis groundwater ingress zones encountered within the mine workings and report on groundwater flow and quality and microbiological content

Groundwater ingress continues to flow at higher than pre-mine modelling predictions (between 12l/s – 6l/s). No microbiological content was detected in the underground water.

27. The Lessee must ensure water discharged from the site is compliant with the relevant environmental protection policy under the Environmental protection Act, 1993.

Reverse osmosis (RO) product water continues to be discharged into the Alexandrina Council‟s effluent lagoons (STEDS), under monitoring and reporting criteria compliant with EPA standards (EPA Water Quality Policy 2003, irrigation standards) and local council. Water cleaner than local groundwater was re-injected in 2011.

34. The Lessee must dispose the tailings into underground workings to the extent it is technically feasible. Material other than tailings should only be disposed of underground if it can be shown that this will not decrease the maximum amount of tailings and other sulphidic waste that can be placed in the underground workings.

The cemented and un-cemented rock backfill of mined stopes continued in 2011 with 160,000 tonne of rock fill placed. Paste (cement stabilised thickened tailings) back-filling commenced in earnest from September 2011 with 51,600m3 placed in 2011. A new Paste fill plant will be constructed and commissioned in the first half of 2012 in conjunction with current contract operations.

35. The Lessee must design, operate , close and rehabilitee the Tailings Storage Facility according to the conditions outlined the mineral lease including; 35.3 the tailings must be produced to <30% moisture by weight

Tailings were thickened to an average solids content of around 65% in 2011. Laboratory testing of production tailings samples has shown that the tailings properties differ from those achieved from the prototype samples during the design phase. The production tailings to date have significantly higher silt/clay content (ie. % finer than 75 μm), lower particle density, lower segregation threshold and higher viscosity than the pre-production tailings. Therefore, a solids content of greater than 60% is sufficient to ensure that the general design principles of thickened discharge schemes are met (ATC Williams, May 2010).


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6 Other Issues

6.1 Public Liability Insurance The Angas Zinc Mine has a current public liability insurance policy. A copy of the current certificate is in the Appendix B.

7 Rectification of Non-compliances Rectifications of non-compliances with the PEPR outcomes or lease conditions have been detailed in table 6.


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Table 6: Rectification of non-compliances

Issue Incident Remediation Actions Preventative action

Noise (technical non-compliance)

Attended noise monitoring was not undertaken in 2011 as per the PEPR

Quarterly monitoring was carried out as outlined in AECOM‟s (acoustic specialists) proposal for alternative noise monitoring methodology dated January 2010. This methodology of assessing noise level compliance was approved in principal by DMITRE for a trial period before re-assessment.

The trial methodology is based on an updated noise model for the Angas Zinc operation using measurements from on-site noise sources. Modelled contours predict the noise levels at surrounding locals based on worst case conditions (Appendix O). The model is verified on a quarterly basis with results from continuous noise logging at two locations on the outskirts of the operation that experience minimal interference from non-mine activities. This model was re-assed in May 2011 (Appendix AC).

Work will continue on the alternative method of monitoring mine-related noise to satisfy Angas Zinc‟s regulatory requirements, in consultation with the appropriate parties. Community noise complaints will be attended to promptly and attended monitoring will be carried out at specific locations as required to follow up community concerns.

Noise Exceedance at the mill monitor.

The current noise logger location differed from the modelled location. Correct location resulted in an average noise drop of 4dB(A). Small exceedances are still occurring at night (Jan 2012 monitoring)

The correct monitored noise logger location has been properly marked. Strategies to eradicate the night exceedances are currently being investigated and include actions such as additional noise bunding and blanketing.

Dust (technical non-compliance)

PM10 did not occur at the beginning of the year

Trial erected in October for a three month period. Personnel dust monitoring undertaken quarterly

If the trial proves to discount PM10 as a compliance issue, Terramin will put a case to DMITRE, EPA and the SCCC to remove the PM10 reporting requirement from the PEPR.

Dust Total solid deposition rate exceeded PEPR criteria throughout 2011

All exceedances are reported to the EPA Work with EPA on additional dust investigation.

Continuation of dust suppression initiatives including; better wetting of ROM pad and stockpiles, more extensive cleaning and watering of road surfaces in processing area, and vigilant inspection and maintenance of dust collection equipment.

Drag-out (technical Non-compliance )

Technical non-compliance as not recorded on a daily basis, only by exception

It was confirmed by Hans Bailiht of DMITRE at the August 2010 SCCC meeting that dragout at the mine entrance no longer needs to be logged on a daily basis as it has been demonstrated that it is not a significant issue.

Established preventative measures will continue, including road sweeping and truck/vehicle washing.

Blasting Stopes blast outside allowable time

Internal reports were raised. Any stope fired out of regulatory times needs to be reviewed and approved by the mine manager and an internal incident raised.


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Issue Incident Remediation Actions Preventative action

Blasting (technical non-compliance)

Overpressure greater than 120dB(L) Not measured all year due to Paddock monitor malfunction

Immediate investigation proved the exceedances were directly correlated to wind speed. Vibration was measured continuously in 2011.

Independent review conducted by SAROS (blast monitoring specialists) Report stating erroneous measure (Appendix AB).

Complaints On a number of occasions, Terramin has received complaints from members of the community regarding concerns they have with mining activities. These complaints are received either via the 24-hour Community Complaints Line or by direct phone contact with Angas Zinc staff.

A full summary of community complaints is tabled in Section 11 of this report.

All community concerns were investigated immediately, with responses to complainants always within two working days or sooner. Timely corrective actions and/or further investigations are undertaken wherever possible and practical.

All practical steps are taken to meet environmental obligations and ensure the community is minimally impacted by Terramin‟s activities. As well as responding to complaints and other feedback, Angas Zinc proactively communicates with the local community on environmental topics through the SCCC, the Community Newsletter, and direct contact with adjacent/nearby landowners and residents who have previously expressed concern.


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8 Management System Reviews Terramin is committed to ensuring the protection, integrity, accuracy and currency of all our knowledge and information. Terramin recognises that knowledge and information is a vital asset that supports our ongoing operations and that effective management of this knowledge and information is critical to our ongoing success. In 2011, Terramin introduced a document management system and intranet, based on Microsoft SharePoint, which standardises the way we manage, protect, approve, disseminate and store controlled documents. Terramin‟s document management system controls the life cycle of documents at Terramin; how they are created, reviewed, and published, and how they are ultimately disposed of or retained. A HSEC management system called In-control was implemented in 2011. In control is a high level risk management system to document employee training, track events, incidents (including environmental) and register risks. All 2010 data was added to the data base. Terramin has also subscribed to Chemwatch for complete access to their online MSDS data base.

9 Fit for Purpose Reviews of Plant, Equipment, Infrastructure and Other Facilities

No equipment, plant or infrastructure required a Fit for Purpose five year review, however, all equipment new to site was assessed for fit for purpose (table 7). Table 7: Equipment and Infrastructure Fit for Purpose Assessment 2011

Equipment Fit for Purpose Reviewer Date of Review

EWPO1Manitou 180ATJ S Hristov 27th June 2011

UD 08 Load Haul Dump S. Jackson 1st July 2011

Pugmill (paste plant) A. Millsteed 16th August 2011

UD02 Load Haul Dump S. Fielding 23rd

August 2011

Concrete Mixer 45 & 46 G. darker 5th September 2011

LV27 Landcruiser S. Jackson 30th September 2011

Drilling Solutions, Drill Rig # 1& 2 C Caldwell 5th October 2011

LV28 Landcruiser I. Hansen 13th October 2011

Osmoflo RO rental facility Terramin October 2011

Veolia Vacuum truck C.Caldwell 4th November 2011

Hydro jet drain cleaning truck C.Caldwell 4th November 2011

Kangarilla drilling, Mitsubishi Canter S.Jackson 23rd

November 2011

Kangarilla drilling, Mercedes support Truck S.Jackson 23rd

November 2011

Kangarilla drilling , Drill rig S.Jackson 23rd

November 2011

Hitachi 35OH D.Durliv 14th Decemebr 2011

10 New Environmental Hazards New chemical used on site were the only introduced environmental hazards identified in 2011. All chemicals require MSDS‟s and are signed off by the Environmental Superintendent prior to use.


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11 Incidents and Third Party Complaints

11.1 Significant Incidents This section details all known incidents during the reporting period, reportable to the Chief Inspector of Mines, as per Lease Condition 15 (table 8). Table 8: Significant Incidents

Section Description Incidents 15.1 Any unexpected groundwater flow in the underground mine workings; Groundwater inflow into the underground workings has continued at levels higher than those modelled in

pre-mining plans. Water management has been detailed in section 3.2 of this document.

15.2 Any unplanned collapse of underground workings; Nil reported

15.3 Any detection of microbiological material in the mine water, likely to be sourced from the overlying effluent ponds;

No microbiological material detected in the mine water during the reporting period.

15.4 Any fires caused by mining operations; Nil reported.

15.5 Any unauthorised entry to site by any member or members of the public, or breach of security measures;

Nil reported

15.6 Any injury to member of the public caused by mining operations (including by truck movements);

Nil reported

15.7 Any breach of environmental outcomes to be achieved as detailed in clauses 16 to 63; and

All non-conformances are detailed in Sections 5 and 7 of this report.

15.8 Any flora and/or fauna deaths or sickness likely to be caused by the mining operation.

Remains of a bat recovered from underground workings. DMITRE were notified immediately.


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11.2 Environmental and Community Incidents

Nine environmental incidents and five community events were recorded during 2011. Further detail is provided in table 9 and 10.

Table 9: 2011 Environmental Incidents Event Date Sufficient Details Closed Out Date Immediate Action Taken

4-Apr-2011 07:30

Employee noticed a water pond on the road

verge near the vistors area. on inspection

into the bush, water is tracking down from

a plasson HDPE coupling on the RO

disposal water line

05-Apr-11Reported to Mill Superintendant, repairs

completed.

March-2012

Pipe was partly broken by backhoe

operator when digging exploration drill rig

sumps,

Mach-2012 Pipe was repaired immediately

20-May-2011 18:00

RO transfer pipe to STEDS noticed as

leaking on North side after Callington rd

crossing. Reported by local contractor after

noticing soild saturated in paddock.

Inspection revealed that coupling had failed

and allowed leakage of treated water to

ground

21-May-11 Pipe fixed the following day

1-Jun-2011 00:00Mining reported a Light Vehicle parked on

the Go Line had a fuel leak.01-Jun-11

Remaining fuel tank contents drained into

Jerry Can. Lime mix spread on ground to

soak up the spill. Spill estimated at between

10 - 15 litres. Machine placed out of service

Repaired by maintenance

29-Jul-2011 08:00

Water pooling on the ground around TSFA,

either RO reinjection or nearby drilling

possible cause

Estimated water flow, reinjection shut down

2-Aug-2011 16:00

Rabbits infesting neighbouring properties,

$460 worth of fruit trees ringbarked.Need to

poison rabbits in warrens and rip all

warrens. If problem continues may need to

consider tree guards

Warrens destroyed

6th OctoberRabbit fumigation began in October

13-Aug-2011 00:00

Running paste and mixer clean out door

latches released door opened about an

inch releasing tailings onto floor around fill

plant.

14-Feb-12Stopped production, contained spill, placed

sand onto spill.

18-Sep-2011 00:00

Dust monitor glassware destroyed and left

on Swamp road, identified as belonging to

Terramin by lab sticker

20-Sep-11

Replaced dust monitor on the 20 september.

Informed regulators on the 21st september of

a gap in monitoring data from 9 - 20

september for site no 10.

17-Dec-2011 00:00Top of cover on bore cover failed due to age

fatigue, and water leaked from bore.22-Dec-12

Closed valve to bores on reinjection line. Refit

cap on bore. Checked function of relief valve.

Checked condition of caps on other bores.


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Table 10: 2011 Community Events Register

Event Date Sufficient Details Closed Out Date Immediate Action Taken

14-Jan-2011 18:20

Blasting errors - late firing of stope.

INcident no. M1044 14-Jan-11

notified community members. reported to

supervisor

22-Mar-2011 18:07

Late Firing of 120-7300 Stope due to faults

on dets. Charge tested ok at 1730 but had

a fault at the time of firing. Switched lines

off brlow the 120 rad and they tested ok. 22-Mar-11

Went underground and switched decline firing

line off and fired the 120 RAD

11-sept-2011/09/2011 11:00:00 AM

(internal)There was a loud vehicle noise

from 2200 - 2350hrs on sunday night.

Potential to cause a community complaint. 12-Sep-11

Investigated and thought to be the Aquilia

loader refueling

13-Nov-2011 18:35

Late firing stope because mono pump blew

out in 140 RAD 13-Nov-11 Reported late firing

17-Nov-2011 18:30

Wet holes in stope took longer to charge

than planned so it delayed firing until 6:30.

No email was sent to local residents 17-Nov-11 Fired stope

11.3 Third Party Complaints The Angas Zinc Mine aims to work proactively with the community by openly communicating with local residents. Residents are able to voice concerns and provide feedback on the mining operation via the 24 hour community line, the Angas Community email address (commissioned in 2010), or by directly contacting the Environment and Community Superintendent. Complaints are responded to immediately wherever possible but always within 2 working days. Any follow up actions are communicated with the complainants. A total of 20 complaints were recorded in 2011, down 53% to 2010 (43 complaints). Fifty percent of all complaints were noise related, however, the majority of these occurred in the first half of the year (figure 3). After noise bunding had been erected, noise complaints decreased. Table 11 is a summary of all complaints received from third parties.

Figure 3 - Breakdown of complaints in 2011 by category


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Table 11 – Summary of community complaints for 2011 reporting period

Event Date Description Date Actioned Immediate Action Taken

3-Jan-2011 04:02

Neighbouring resident rang via complaints

line reporting noise from mine woke

household and was reading 47dB.

Mentioned could hear concrete truck and

mill gearbox.

03-Jan-11

Anya rang Andrew to confirm if concrete

trucks run over night - confirmed. Anya spoke

to Ray who visited residents stating we would

investigate further and be in touch the

following day - complete.

7-Jan-2011 00:40

Neighbouring resident rang Anya's office

phone and left a message to relay that they

were woken at 00:40am by what was

perceived as a bogger coming out of the

boxcut. They claim readings of 42-52dB

wnen equipment was there. Message was

not picked up until Monday.

10-Jan-11

Anya called complainant to acknowledge

message and reiterated need to call via

community line so information could be

picked up immediately

19-Jan-2011 05:49

Message received via 24 hour complaints

line. Described noise coming from mine as

"very bad", ranging from 42-48dB.

19-Jan-11

Anya called complainant later the same

morning to arrange a time to visit. Rob and

Anya visited that afternoon with results from

recent monitor and explained follow up

actions including installation of noise cover on

mill gearbox, revision/extension of noise

bunds and verification of noise model with

AECOM. Also informed that we were seeking

additional advice from EPA and noise experts

(AECOM).

25-Jan-2011 00:00

Anya was contacted by Joel Horn from the

Murray Bridge NRM office saying he had

received a complaint from a nearby

neighbour that rabbits were out of control

on our site.

25-Jan-11

Arranged a site visit for Joel for the 1/2 to

show him around and discuss plans already

in place to control rabbits.

28-Jan-2011 13:40

Nearby resident rang 24 hour phone line

saying she did not receive her usual sms

advising of upcoming stope blast and it

took her by surprise. She perceived that

the blasting was occurring right beneath

her house.

28-Jan-11

Ray contacted her and later visited. Advised

mining activity was nowhere in the vicinty of

her house.

29-Jan-2011 04:33

Neighbouring resident rang via 24 hours

complaints line saying noise from mine site

was 47dB.

29-Jan-11

Complaint was acknowledged immediately by

Anya. Anya rang residents at 8:30am the

same morning to acknowledge receiving the

message and ask for more details. Resident

commented that tails line was audible above

other equipment.

31-Jan-2011 03:30

Neighbouring resident rang via 24 hour

complaints line saying that noise from

coming from mine was "really bad".

31-Jan-11

Message was acknowledged immedidately

and Anya rang complainants at 8:30am the

same morning and left a message. Returned

call the following day and spoke with them.

15-Feb-2011 23:39


line reporting that noise coming from the

mine was really bad, up to 55dB.

16-Feb-11

Anya rang resident the following morning.

Complainant reported that mill gearbox and

tails pump was audible above everything else.

Expressed dissatisfaction with percieved lack

of action on Terramin's part and that they

really wanted someone to come and

experience what they do because they don't

believe we understand the impact. Anya

explained it was being taken very seriously.

Noise blanket was to be fitted to gearbox the

following week and additional noise bund work

would commence within the week as well.

Also explained that much research and

consultation with regard to monitoring and

compliance was taking place with regulators

and discipline experts.


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Event Date Description Date Actioned Immediate Action Taken

22-Feb-2011 03:39


line reporting that noise coming from mine

is bad at present.

22-Feb-11

Anya rang complaintant later the same

morning and left a message acknowledging

the receipt of complaint. Reiterated actions

already in place, as per previous discussions

and gave direct number to call if they had

further queries.

18-May-2011 23:00

Member of the SCCC reported to Anya by

email that friend living in Burnside Estate

wished to report a complaint. Claimed they

were woken at 11pm the previous night by

"crusher" noise coming from mine site. Did

not wish to contact mine directly.

19-May-11

Followed up with mill personnel to check if

crusher was running at this time. Citec shows

it was stopped prior to 10pm, as per

requirements. This feedback was passed on

the following day to SCCC member to relay.

Anya also encouraged that complainant

contacted mine directly in future via 24 hr

phone line.

24-Jun-2011 00:00

Complaint from Strath Water Catchment

group in relation to AZM intent to release

treated water in to STEDS wetlands. This

cascaded several enquiries and media

attention.

24-Jun-11Review commenced by Matt Daniel and mgt

team.

1-Jul-2011 00:00Complaint in relation to noise from

processing during night25-Jul-11 Investigation commenced.

19-Jul-2011 00:00

Complaint from community resident in

relation to not being advised of stope blasts

since Anyas deparure onto maternity leave

25-Jul-11

Followed up with miing by E&C

Superintendent. Contact with community

resident to confirm investigation.

20-Jul-2011 16:22Request SMS notification before stope

blasts21-Jul-11

requested shift supervisors contact E&C

supervisor before blast

26-Jul-2011 17:30 Stope blast sms not received by neighbour 27-Jul-11

Review notification procedures, 24 hr helpline

to undertake this service in future. Automated

system in place the 27th of July

27-Jul-2011 19:30

Phone call to neighbours from someome

claiming to represent Terramin or an

exploration company stating their land will

be compulsorily aquired and they will lose

house

28-Jul-11Visited neighbours immediately, explained

that this was not terramin

2-Aug-2011 11:45 loud drilling noise at night, disturbing sleep 03-Aug-11Contacted exploration, ordered hay bales to

construct noise bund

18-Aug-2011 00:00Neighbour complained of exploration tracks

in their paddock - didn't want compensation19-Aug-11 Did not want compensation

16-Nov-2011 06:48Blast rattled dishes, wanted to know if it

was a stope blast16-Nov-11

Confirmed it was a series of 3 development

blasts, 10 seconds apart, provided feedback

to Dorothy she was satisfied with explanation

25-Nov-2011 17:40

Email from local complaining about the

size of the stope blast and that blasting

must have contributed to cracks in his

house

Report Complete

Contacted local, placed mobile blast monitor

at his address, will follow up with a report on

the monitoring


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12 References

1. ATC Williams. Tailings Storage Facility Angas Zinc Mine, Operation and Maintenance Manual Version 2. Melbourne, Victoria. May 2010.

2. Burgess, J. et.al. Angas Zinc Mine Mining and Rehabilitation Program. Adelaide, South Australian, March 2007.

3. COOE Pty Ltd, Terramin Angus Zinc Mine, Weed and Pest Management Plan. Adelaide South

Australia, 2010.

4. Hart, A & Giannasi, V. Angas Zinc Mine, Mining and Rehabilitation Compliance Report 2010. Strathalbyn South Australia, October 2011.

5. National Health and Medical Research Council (NHMRC), Australian Government; National Water

Quality Management Strategy, National Australian Drinking Water Guidelines 6. Canberra ACT, October 2011.

6. National Environmental protection Council (NEPC), „National Environmental Protection Measure. Guidelines on the Investigation Levels for Soil and Groundwater‟. Canberra ACT, Dec 1999

7. National Occupational Health and Safety Commission (NOHSC) „Exposure Standards for Atmospheric Contaminants in the Occupational Environment‟. Canberra ACT, May 1995

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Appendix A - Surveyed Mine Workings

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Note: no changes to this level for the remainder of the calendar year.

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Appendix B - Public Liability Insurance Certificate

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Appendix C - 2011 Subsidence Monitoring

≥ 5mm Drop

≥ 5mm Rise

Point ID Easting Northing Date Levelled

12/12/2007 04/05/2009 18/08/2009 26/10/2009 06/05/2010 17/11/2010 09/05/2011 21/11/2011

MON 1 310645.769 6097263.706 73.408 Buried Buried Buried Buried Buried Buried Buried

MON 2 310514.451 6097194.500 73.053 - - - - - - -

MON 3 310410.526 6097139.678 74.492 - - - - - - -

MON 4 310341.220 6097102.646 73.891 - - - - - - -

MON 5 310261.435 6097060.991 74.071 - - - - -

MON 6 310481.334 6097238.844 70.562 70.559 70.557 70.557 70.555 Inaccessible 70.558 70.560MON 7 310438.786 6097220.606 70.862 70.865 70.862 70.861 70.862 Inaccessible 70.864 70.867MON 8 310395.046 6097201.728 70.881 70.884 70.880 70.880 70.880 Inaccessible 70.884 70.888MON 9 310493.901 6097348.904 71.853 71.846 71.845 71.846 71.843 71.846 71.849 71.850MON 10 310452.654 6097321.240 71.739 71.728 71.730 71.730 71.726 71.728 71.731 71.731MON 11 310412.857 6097297.420 71.730 71.724 71.724 71.724 71.718 71.724 71.725 71.726MON 12 310504.867 6097444.983 71.831 71.816 71.820 71.818 71.820 71.819 71.816 71.820MON 13 310488.280 6097438.993 71.946 71.941 71.941 71.939 71.940 71.940 71.944 71.948MON 14 310405.303 6097384.999 72.013 71.997 71.999 72.001 71.996 72.001 72.004 72.008MON 15 310490.474 6097516.193 72.003 DISTURBED 72.070 72.064 72.044 72.041 72.029 72.032MON 16 310451.625 6097492.703 71.864 71.856 71.857 71.859 71.855 71.854 71.855 71.855MON 17 310396.729 6097461.368 71.920 71.918 71.918 71.920 71.918 71.919 71.922 71.923MON 18 310488.437 6097561.071 71.879 71.879 71.877 71.877 71.878 71.878 71.879 71.882MON 19 310404.688 6097552.672 76.909 76.907 76.907 76.907 76.910 76.909 76.914 76.916

Mon 20 (New

Stobie)

- - - 74.917 74.917 74.917 74.916 74.917 74.917 74.917

Mon 21 (Sign) - - - 74.767 74.769 74.769 74.767 74.769 74.767 74.768Mon 22 (New

Stobie)

- - - 75.552 75.554 75.554 75.552 75.553 75.552 75.553

Mon 23 (Sign) - - - 73.559 73.561 73.559 73.554 73.556 73.553 73.555

TBM 1 310138.458 6097419.700 72.494 72.487 72.486 72.490 72.489 72.489 72.488 72.489TBM 2 310600.891 6097570.593 70.996 70.997 70.996 70.993 70.997 70.998 70.998 70.999

PSM 6627/17155 310276.226 6097049.343 74.614 74.615 74.615 - 74.615 74.615 74.615 74.614PSM 6627/2892 76.762 - 76.764 - 76.765 76.766 - -

Stobie 73.507 73.500 73.502 73.501 removed removed removed removedStobie 73.662 73.660 73.663 73.663 73.658 73.661 73.657 73.653Stobie 74.597 - 74.599 - 74.600 74.599 - -Stobie 71.395 - 71.395 - 71.393 71.397 - -

Client : TerraminCSS Job : 2007003

Project: Angas Zinc MineDescription: Monitoring Stations

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Appendix D –Ground and Surface Water Monitoring Locations

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Appendix E: Dust Contour and Monitoring Location Maps

30 day maximum Total Suspended Solids (g/m2)

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30 day maximum Lead deposition (mg/m2)

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Appendix F – Surface Water Quality Data

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Appendix G – Groundwater Bore Levels

Bore site Proposed tertiary aquifer drawdown after Seven years of operation (meters below surface)

RG1 77 RG2 + RG3 60

RG4 53

RG8 + RG7 76

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Appendix H – Groundwater Quality data

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Appendix I – Annual Photo Monitoring Visual Monitoring 2011

Photo 2 – Location 1 (Aero Club/Langhorne Creek Rd)

Photo 3 – Location 2 (Aero Club/ML Peg SW corner)

Photo 4 – Location 3 (Hillside Rd/Garwood property)

Photo 5 – Location 4 ((Hillside Rd/Adelaide Hills Recyclers property/ML Peg E)

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Photo 6 – Location 5 (Callington Rd/Adelaide Hills Recyclers/ML Peg E)

Photo 7 – Location 6 (Quarry/Adelaide Hills Recyclers/adjacent dust gauge 5)

Photo 8 – Location 7 (Garwood paddock/Adelaide Hills Recyclers boundary)

Photo 9 – Location 8 (Garwood paddock/Adelaide Hills Recyclers boundary/ML Peg SE)

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Appendix J – Topsoil Stockpile Monitoring Data Annual Topsoil Stockpile Photo Monitoring

2007

2008

2009

2010

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2011 Topsoil Stockpiles Nutrient and Metals Analysis

pH Value

Electrical

Conducti

vity @

25°C

Moisture

Content

(dried @

103°C)

Exchange

able

Calcium

Exchangeable

Magnesium

Exchange

able

Sodium Arsenic Cadmium Copper Lead Manganese Nickel Zinc Mercury

Total

Organic

Carbon

pH Unit µS/cm % meq/100gmeq/100g meq/100g mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg %

TSP01 7.3 91 5.6 35.7 2.2 0.3 11 <1 <5 14 69 4 16 <0.1 0.9

TSP02 7.4 127 8.3 35.7 2.5 0.3 11 <1 <5 14 84 4 24 <0.1 0.8

TSP03 7.6 143 5.4 26.7 1.7 0.6 12 <1 <5 14 88 4 25 <0.1 0.9

TSP04 7.7 135 8.5 32.1 2.7 0.4 11 <1 <5 19 75 4 29 <0.1 1.4

TSP05 7.4 142 11.8 28.2 2.8 0.2 13 <1 5 21 81 4 33 <0.1 1.8

TSP06 7.7 130 11.7 25.1 2.6 0.2 11 <1 6 17 98 4 22 <0.1 1.4

2011 Average 7.51666667 128 8.55 30.58333 2.416666667 0.333333 11.5 <1 5.5 16.5 82.5 4 24.83333 <0.1 1.2

Initial mean 7.8 94 8.8 9.72 0.84 0.115 21.5 <1 0 10.3 26.46 5 10.2 <0.1 0.9

NEPM

Guidelines* 20 3 0 500 60 200 1 * Data taken from NEPM „Guideline on the Investigations Levels for Soil and Groundwater‟. Ecologically-

based Investigation Levels were used.

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Appendix K – Summary of Waste Disposal 2011

Material January February March April May June July August September October November December

General 10.0t 12.3t 12.2t 10.0t 17.8t 19.0t 19.46t 25.54t 27.12t 19.08t 26.6t 40.52t

Recyclables 8.6t 12.9t 10.1t 8.6t 23.2t 22.7t 400kg 500kg 450kg 400kg 400kg 400kg

Scrap metal - - - 7.3t - 6.1t 4.96t 3.08t - 3.74t 4.4t 4.78t

Soft plastic - - - - - - - - - - - -

Bottles & cans - - - - - - - - - - - -

Electrical - - - - - - - - - - - -

Silt / sludge - 3,500L - 5,600L - - 4,300L 7000L - - - -

Waste oil / grease 5,500L - 1,900L - - 4,800L 6,000L 10,300L 4,800L - - 4,500L

Oil / water mixture 600L - 2,400L - - - - - 1,800L 2,800L 5,200L 8,300L

Hydraulic hoses / oil

filters / rags- - - - - - - - - 1 drum -

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Appendix L – TSF Leak Detection System Location

(Drains 1-5)

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Appendix M – TSF Seepage Drain (Double Liner System) Volume and Flow rate

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Appendix N - TSF Seepage Drain (Leak Detection System) Chemical Composition Data

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Appendix O – Noise Contour Maps

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Appendix P – Noise Monitoring Data

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Appendix Q – Blast Monitoring Data

Annual 2011 Vibrations Total PPV mm/s

0-5 5-10 10+ Total

645 0 0 645

100% 0% 0%

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Appendix R – Dust Deposition Monitoring Data

Please note: The MARP limits for Gauges 5, 7 and 4 have not been included in the Lead Deposition graph as they exceed the graphs vertical axis. The limits are 1000, 250 and 250 mg/m2/month respectively.

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Dust Deposition Data (Total Suspended Solids) Total Solids

(g/m2.month)7 5 4 2 8 1 6 9 11 3 12 10

MARP Limit 25 25 2.5 2.5 0.75 0.75 0.6 0.18 0.18 0.18 0.18 0.125

Jan-11 3.5 2.8 3.3 4.1 2.7 5.7 4.4 3.5 6.0 14.3 5.1 2.5

Feb-11 1.2 3.4 1.8 5.0 2.7 4.7 1.4 4.3 3.5 1.1 4.2 2.5

Mar-11 6.6 5.8 2.9 5.2 6.4 6.4 4.9 7.1 25.8 4.2 10.9 11.9

Apr-11 6.4 3.8 1.9 3.8 4.3 3.7 8.4 2.9 8.7 2.8 9.6 7.0

May-11 2.3 2.0 1.2 1.7 0.6 1.5 1.7 1.1 2.4 1.4 2.3 0.9

Jun-11 4.9 2.3 2.2 1.3 1.7 4.1 8.4 0.5 16.9 1.3 14.8 0.8

Jul-11 7.7 5.4 3.7 2.8 3.9 11.7 8.9 5.2 20.9 2.1 18.2 1.8

Aug-11 2.1 1.8 2.1 2.7 1.0 2.3 6.5 1.3 5.0 1.5 10.6 1.3

Sep-11 1.6 6.7 0.4 0.5 0.4 2.6 2.0 0.7 2.7 3.0 7.0 2.6

Oct-11 2.4 3.1 5.3 3.0 1.7 3.5 10.0 3.1 7.1 4.3 11.7 0.8

Nov-11 0.9 1 1.8 5 2.6 1.6 2.5 3.5 2.6 4.4 2.1 0.9

Dec-11 2.8 2.9 2.6 7.0 1.9 2.1 2.2 0.9 2.8 4.7 7.2 1.7 Dust deposition Data (Lead)

Lead

mg/m2/mth5 7 4 2 8 6 9 1 11 3 12 10

MARP Limit 1000 250 250 50 25 25 25 25 5 5 5 3

Jan-11 1.8 4.2 0.3 0.6 0.5 0.1 0.5 1.9 0.4 4.9 0.1 0.1

Feb-11 4.7 3.3 0.9 0.9 0.3 0.1 0.8 0.8 0.1 0.1 0.0 0.1

Mar-11 4.6 3.9 0.5 1.0 1.1 0.4 0.4 0.3 0.3 0.1 0.2 0.3

Apr-11 2.8 11.9 0.4 0.6 0.8 0.3 0.3 0.1 0.3 0.0 0.1 0.3

May-11 0.6 1.1 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Jun-11 0.4 4.9 0.1 0.2 0.1 0.1 0.7 0.1 0.2 0.1 0.0 0.0

Jul-11 0.99 6.68 0.58 0.169 0.49 0.153 0.4 0.11 0.19 0.06 0.08 0.05

Aug-11 0.365 5.754 1.695 0.486 0.428 0.918 1.051 0.248 0.678 0.074 0.108 0.063

Sep-11 0.88 3.4 0.22 0.3 0.18 0.25 0.66 0.1 0.09 0.2 0.04 0.2

Oct-11 2.88 7.27 0.297 0.269 0.731 0.171 0.78 0.11 0.135 <0.5 <0.5 0.586

Nov-11 1.754 1.64 1.861 1.522 0.496 0.215 2.537 0.178 0.317 0.342 0.176 0.198

Dec-11 2.3 2.61 1.03 0.331 0.472 0.305 0.594 0.159 0.121 0.105 0.092 0.254

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Appendix S: High Volume Dust Monitoring Data

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Appendix T– Personnel Inhalable Dust Monitoring

Inhalable

dust

concentration

8 hour

normalised

Inhalable

Dust

concentration

(mg/m3)

Lead dust

concentration

(mg/m3)

8 hour

normalised

Lead Dust

concentration

(mg/m3)

Copper

dust

concentr

ation

(mg/m3)

8 hour

normalised

Copper dust

concentratio

n (mg/m3)

21/12/2010 R.Dalton Jumbo Rock Bolting 0715-1444 449 10.5 1.13 1.76 0.004 0.01

21/12/2010 T.Ferguson Toro Loader Backfill 0920-1405 285 10.5 1.75 2.72 0.01 0.02

21/12/2010 T.Elliot Charge up crewAll areas (UG) 0720-1245 325 12.5 0.75 1.63 0.04 0.09

21/12/2010 M Johnston Mill Operator Mill areas 0725-1450 445 12 1.51 3.02 0.04 0.08

7/05/2011 B.Orwell Mill Operator Mill areas 0811-1318 307 12 0.98 1.96 0.05 0.1 0.006 0.012

9/12/2011 J.Graetz Mill Operator Mill areas 0915-1350 275 12 0.51 1.02 0.03 0.06 0.003 0.006

AreaOccupation/

Task/Location NameMonitoring date

10 0.15 1

Shift

duration

(hrs)

Monitoring

duration

(minutes)

Monitoring

period

Numbers highlighted in blue are exposure standards from the National Occupational Health and Safety Commission (NOHSC, 1995).

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Appendix U – Regional Rainwater Tank Lead Content Data

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Appendix V – Daily Log Sheets

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Appendix W – Economic Impact

Local Spend Analysis 2011

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Appendix X – Strathalbyn Mining Lease Flora Assessment (Executive Summary)

EXECUTIVE SUMMARY An ecological assessment was undertaken for a low-lying seasonal wetland basin south of the Alexandrina Council sewage ponds in Strathalbyn, South Australia. The area is considerably degraded by weeds, feral animals and previous human impacts such as stockpiling soils and changes to natural water flows. There are some small areas containing remnant vegetation which are currently providing moderate level habitat to a number of local native fauna species. Four vegetation types were described for the area: 1 = Exotic herbland +/- Atriplex semibaccata (Berry Saltbush), Suaeda australis (Austral Seablite), Tecticornia pergranulata ssp. pergranulata (Black-headed Samphire) 2 = Muehlenbeckia florulenta (Lignum) Tall Shrubland 3 = Council revegetation area 4 = Stockpile site. None of the vegetation associations recorded within the project areas are listed under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act), or the state’s Provisional List of Threatened Ecosystems of South Australia (DEH, in progress). A total of 28 native flora species and 33 exotic species were recorded during the field survey of the project area (14 of these are planted native species). None of the remnant species are of conservation significance under the EPBC Act, or under the National Parks and Wildlife Act 1972. The Protected Matters Search identified 16 threatened species, 10 migratory species, one wetland of national significance and two nationally threatened ecological communities protected under the EPBC Act. None of the threatened ecological communities were detected and the subject site is ‘upstream’ from Coorong and Lakes Alexandrina and Albert Wetlands of International Significance wetland. Ten nationally listed flora species highlighted by the Protected Matters Search were not detected on sitand are regarded as unlikely to occur, particularly given the high level of weed invasion across the site. However Arachnorchis colorata (Painted Spider-orchid) records are less than 10 km from the project area and the species would have been inconspicuous during the field survey. Therefore the species cannot be considered unlikely to occur. Only one of the nationally listed bird species, Merops ornatus (Rainbow Bee-eater), is considered a possible visitor to the site. The BDBSA records identified five nationally listed flora species, 24 state listed flora species and 27 threatened native fauna species as having records within 10 km of the survey area. No national or state listed species were recorded within the survey area, however there are four species of orchids which would not be conspicuous during the survey period. Eucalyptus fasciculosa (Pink Gum) has previously been recorded adjacent to the site and is therefore the likelihood of occurrence is listed as ‘possible’, despite not being observed within any of the mapped vegetation associations. No threatened fauna species were detected within the primary survey area. Most of those species where the likelihood of occurrence is considered ‘possible’ have either been recorded at the site previously or are known to utilise large mature eucalypts and woodland vegetation which is adjacent the project area. The clearance associated with the periodic inundation is not considered to impact upon any of the threatened species highlighted within this search. Under the Native Vegetation Act 1991, the proposal is considered likely to have an adverse impact upon some native vegetation species and therefore an appropriate Significant Environmental Benefit (SEB) has been calculated to offset the proposed clearance. This can be achieved as a set aside area of land, or a payment into the Native Vegetation Fund for the management of native vegetation that results in a net gain for the environment.

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Appendix Y – GCMP Letter of Compliance

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Appendix Z – Weed Survey 2011

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Appendix AA – Arising issues in ATC Williams TSF annual surveillance audit report

Issues Outlined Actions

The amount of water stored in the tailings dam is unacceptable and should be reduced to the design operational volume/area;

Additional water treatment facilities commissioned in November 2011 and construction of new de-silting facility (December 2011) resulted in a decrease in the decant pond water levels

The pipe connecting the decant chute to the decant well should be unblocked and a trash rack/safety grate should be installed at the decant chute intake

A trash rack/safety grate has been at the decant chute intake. Attempts were made on unblocking the decant pipe, however, due to OHS and damage concerns, ATC Williams have advised not to proceed. A pump located on a pontoon situated on the TSF provides water to the RO plants, water sprinklers or to the return water basin (process pond).

The western runoff diversion bund should be repaired and realigned so it discharges downstream of the spillway as per the original design;

The diversion bund has now been repaired and realigned so it discharges downstream of the spillway and not into the TSF

Survey monuments shall be repaired and/or reinstalled and monitored as specified in the operational and maintenance manual

The survey pins have suffered corrosion. Specialized plastic pins have been trialed. All survey pins replaced in November. Surveying has been undertaken.

The monitoring bores on the embankment crest shall be inspected thoroughly and repaired where damaged (ie. broken bore case in MB3);

MB3 has been repaired. The monitoring bores are inspected thoroughly in conjunction with the daily inspection checklist.

New inspection sheets developed in the revised operation and maintenance manual should be used for both daily and weekly inspections;

The new inspections sheets developed in the revised operation and maintenance manual have been used for the TSF daily inspection checklist

Any incidents must be raised and reported in accordance with the requirements of section 8.3 of the operation and maintenance manual.

All incidents are now raised and an incident report completed. No incidents have been reported since the March audit.

The upstream toe of the main embankment adjacent to the new tailings spigot no.6 has been slightly eroded allowing some of the riprap rock to be displaced over the HDPE liner.

The discharge point has been extended to eradicate the erosion issue. The HDPE liner was inspected and no damage to the secondary liner was detected. Subsequently the area has been covered in tailings beach, hence the liner is no longer visible.

Two minor slumps were identified on the downstream edge of the main embankment crest. The cracks have an opening of 2cm and 5cm and spreading over a length of about 2 to 4m on the edge of downstream slope parallel to the crest.

Both slumps have been repaired and continuous monitoring will occur to ensure the cracks do not reappear


Appendix AB - SAROS Review of Air Overpressure Monitoring


Appendix AC- AECOM, AZM Updated Environmental Noise Assessment

angas zinc mine mining and rehabilitation...

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