Data as at 14 September 2026 · from the Queensland EP Act public register
EPML00562913 · Mine
Minerals environmental authority EPML00562913 (Mine), Granted. 247 conditions indexed. No PRC plan.
- Status
- Granted
- Holders
- NUGGET BUCKET PTY LTD
- Tenures
- ML20640; ML20658; ML4910; ML4911; ML4921; ML4928; ML4977; ML5176; ML5319
- PRC plan
- None
- How it was read
- Numbered conditions
- Register
- Register record · Instrument PDF
Conditions
247 numbered conditions read from the current instrument. Page numbers link into the register PDF.
- A1
This environmental authority authorises environmental harm referred to in the conditions. Where there is no condition or this environmental authority is silent on a matter, the lack of a condition or silence does not authorise environmental harm.
- A2
In carrying out the mining activity authorised by this environmental authority, the holder of this environmental authority must comply with Table A1 (Authorised Mining Activities) as depicted in Schedule J - Figures 2a (Red Dome/Mungana - Domain Map) and 2b (King Vol -General Arrangements Map). Table A1 (Authorised Mining Activities) Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) Dams Red Dome zone 55k) Tailings ML5176 224837E; 47.8 Storage of tailings from Storage 8103945N Facility historic Red Dome mine Mungana ML5176 221907E; 147.0 Storage of tailings from Tailings 8014623N polymetallic minerals Storage processing at Mungana Facility Containment of Red Dome ML5176 223514E; 4.0 sediment from Red Dome impoundment Sediment Dam 8104531N system Plant Site ML5176 221483E; 5.0 Collect runoff from admin and processing Sediment Dam 8106232N areas Mungana ML5176 221584E; 0.5 Supply process water from underground mine Process Pond 8106448N _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) Mungana Mine zone 55k) Water Dam ML5176 222014E; 5.0 Storage of water from ML4928 8106104N underground mine Raw Water ML5176 221808E; 42.9 Storage and supply of Dam clean runoff from around 8105786N the operations King Vol Clean ML20658 206268E; 5.5 Clean water storage Water Dam 8125463N King Vol Mine ML20658 207160E; 5.2 Mine water storage Water Dam 8125492N King Vol ML20658 207311E; 3.12 Sediment control Sediment Dam 8125838N Surface ML20658 207490E; 0.1 Sediment control Infrastructure 8125567N Sediment Trap _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) Waste Red Dome zone 55k) Western ML5176 223190E; 40.5 Rehabilitated waste rock Waste Dump ML4928 8105113N ML4977 emplacement from historic Red Dome mine Red Dome ML5176 223000E; 71.7 Rehabilitated waste rock emplacement from Southern 8104543N historic Red Dome mine Waste Dump Red Dome ML4928 223046E; 26.6 Rehabilitated waste rock North Western 8105627N 122.7 emplacement from Waste Dump ML5176 historic Red Dome mine ML20640 220872E; MGOPD 8106609N Not in current plan Waste Rock Dump King Vol ML20658 207171E; 2.5 Store mineral waste Waste Rock 8125672N Store topsoil for rehabilitation Dump Stockpile polymetallic Topsoil ML20658 207129E; 0.7 ore ahead of processing Temporarily store ore stockpiles 8125913N. and PAF material Infrastructure for 207171E; treatment of polymetallic ores 8125873N. Access to the King Vol underground mine 20747E; 8125352N. 207500E; 8125352N. Run of Mungana ML5176 222144E; 8.8 Mine ROM pad ML4928 8106255N (ROM) King Vol ROM ML20658 207248E; 0.9 8125729N Processin Mungana ML5167 221678E; 25.3 g area Processing 8106399N Extraction King Vol box ML20658 207223E; 0.5 cut 8125530N Ancillary Mungana ML5176 221961E; 2.0 Repair and maintenance of mine plant and Infrastruct Workshop and 8106480N equipment ure Portal Sewage treatment, Offices, Washrooms, STP ML5176 221697E; 0.2 Warehouse, etc. Administration 8106278N and STP and Mining _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) Historic zone 55k) Mungana ML5176 221609E; 13.3 Offices. Washrooms, Administration 8106764N 9.9 warehouse etc. The Gap ML5176 221595E; TBA1 Traffic (Access track) ML4928 8106861N Incineration 223831E; 8104797N Waste ML5176 222112E; 0.1 Storing diesel and Disposal ML5176 8106383N (incineration of explosive 221574E; packaging) 8106804N Fuel storage 222763E; 8105060N lubricants Lower Opera ML5176 34.7 No purpose, under Creek to Raw Water Dam rehabilitation, historic mining disturbance Mungana ML4928 222427E; 1.0 Waste disposal Waste 8106075N Disposal Area King Vol ML20658 206864E; 0.3 Store explosives Explosives 8126006N Storage Yard King Vol Mine ML20658 207515E; 0.9 Storage, buildings, Infrastructure 8125629N area parking and helipad King Vol Fuel ML20658 207425E; 0.1 Storage, refuelling and storage and 8125579N power power supply generation ML20658 207635E; King Vol 8125449N 6.8 Access Roads and tracks King Vol ML20658 207138E; 0.3 Mine infrastructure Infrastructure ML20658 8125542N area above above box cut box cut 206151E; King Vol Water 8125792N 6.1 Management of site Management Infrastructure water _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) King Vol Road zone 55k) train loadout ML20658 206909E; 0.6 Parking 8126016N King Vol ML20658 206939E; 1.0 Waste disposal Waste Disposal 8125986N Accommodation Trench King Vol ML20658 207312E; 0.3 Storage of equipment Emergency and materials camp 8124875N Storage of equipment and materials King Vol ML20658 206856E; 0.5 Construction 8125520N laydown area King Vol ML20658 207363E; 0.8 Laydown area 8125644N Voids Red Dome ML5176 223800E; 38.9 Historic mining void Open Pit Not in current plan ML4928 8105457N Enable mineral exploration ML4977 Exploration of resource MGOPD Open ML5176 221424E; 53.9 Exploration of resource Fauna conservation Pit ML5319 8107355N ML20640 Exploratio Access Tracks ML4910 222569E; 45.0 n and ML4911 8105182N2 Exploration ML4921 ML4928 ML4977 ML5176 ML5319 ML20640 King Vol ML20658 Whole of 3.0 Access Tracks lease area and Exploration King Vol ML20658 206864E; 0.2 Exploration 8126006N yard Conservat Fauna ML5319 221370E; 0.1 ion Conservation ML5176 8107741N Zones ML4977 221832E; 8107482N _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Mine Feature Tenure Centroid Maximum Purpose of Mine Domain Name Type and Coordinate disturbance Feature Number (GDA94, area (ha) Red Historic Sites zone 55k) Dome (Non- ML4928 222456E; 0.2 Non-Indigenous heritage Historic Indigenous) 8106710N Disturban Red Dome ML5176 224612E; Conservation ce Fixed Plant ML4977 8104950N Red Dome ML5176 222569E; 12.4 Rehabilitated historic accommodatio ML4977 8105182N2 n and offices processing area Red Dome ML5176 224221E; Roche ML4977 8105074N 9.4 Rehabilitated historic Workshop ML5176 Red Dome ML4977 224448E; offices area Heap Leach 8105251N Pads 4.8 Rehabilitated historic 224165E; 8104512N workshop area 224099E; 23.8 Rehabilitated heap leach 8104326N pads. Potential gold ore reserve Red Dome ML5176 223575E; 9.1 Collect and store runoff Heap Leach 8104433N Impoundment from around heap leach System pads (includes RD sediment dam) Red Dome ML5176 224384E; 2.2 Rehabilitated historic Process 8104835N process water ponds Ponds 1 Detail to be provided to the administering authority prior to construction. 2 Centroid coordinate for the access tracks, exploration and non-indigenous cultural heritage areas are taken from the centre of the mining leases at Red Dome/Mungana and King Vol.
- A3
Access to the licensed place via land authorised for that purpose by the Mineral Resources Act 1989 is subject to the conditions of this environmental authority. Maintenance of Measures, Plant and Equipment
- A4
The holder of this environmental authority must: a) install measures, plant and equipment necessary to ensure compliance with the conditions of this environmental authority; b) maintain such measures, plant and equipment in a proper condition; and c) operate such measures, plant and equipment in a proper manner. Monitoring and Reporting
- A5
Any management or monitoring plans, systems, programs or reports required to be developed and implemented by a condition of this environmental authority must be reviewed for effectiveness in _____________________________________________________________________________________________________________ Environmental authority EPML00562913 minimising the likelihood of environmental harm on an annual basis and amended immediately if required.
- A6
Monitoring records or reports required under this environmental authority must be maintained and be readily accessible at the licensed place for a period of not less than five (5) years.
- A7
The holder of this environmental authority must upon request from the administering authority, supply monitoring records, plans and reports in the form and by the means requested by the administering authority within five (5) business days, or a timeframe as otherwise agreed to by the administering authority.
- A8
All monitoring referred to in this environmental authority must be undertaken by an appropriately qualified and experienced person using monitoring equipment that is accurately calibrated and maintained in accordance with manufacturer's specifications.
- A9
All analysis and tests required to be conducted under this environmental authority must be carried out by a laboratory that has NATA certification for such analysis and tests, except as otherwise authorised by the administering authority. Financial Assurance
- A10
Financial assurance must be lodged with the administering authority in the amount, the form and within the time required by the administering authority. Risk Management
- A11
The holder of this environmental authority must develop and implement a risk management system for the mining activity which mirrors the content requirements of the Standard for Risk Management (ISO31000:2009) or the latest edition of an Australian Standard for Risk Management by 31 December 2017. Emergency Response/Contingency
- A12
Prior to the commencement of mining or processing the holder of this environmental authority must develop and implement an emergency response/contingency plan to respond to emergency events and incidents. The emergency response/contingency plan must address the following matters at a minimum: (a) response procedures to be implemented to prevent or minimise the risk of environmental harm arising from emergency events and incidents; (b) response procedures to minimise the extent and duration of environmental harm caused by emergency events and incidents; (c) the practices and procedures to be employed to restore the environment or mitigate any environmental harm caused; (d) the resources to be used in response to an emergency event or incident; (e) procedures to investigate the cause of any emergency events and incidents, including releases, and remedial actions to reduce the likelihood of a recurrence of similar events; (f) the provision and availability of documented procedures to staff attending any emergency event or incident to enable them to effectively respond; _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (g) training of staff that will be called upon to respond to emergency events and incidents to enable them to effectively respond; (h) timely and accurate reporting of the circumstance and nature of emergency events and incidents to the administering authority in accordance with conditions of this environmental authority; (i) procedures for accessing monitoring points during emergency events or incidents; and (j) procedures to notify any potentially impacted stakeholder who may be affected by emergency events or incidents. Notification of Emergencies, Incidents and Exceptions
- A13
The holder of this environmental authority must notify the administering authority by written notification within twenty-four (24) hours, after becoming aware of any emergency or incident which results in the release of contaminants not in accordance, or reasonably expected to be not in accordance with the conditions of this environmental authority.
- A14
The holder of this environmental authority must notify the occupiers or registered owners of affected land and any other potentially impacted stakeholder as soon as reasonably practicable after becoming aware of any incident, exceedance or release that has the potential to impact on environmental values or breaches any condition of this environmental authority concerning releases of contaminants to the environment.
- A15
Within ten (10) business days following the initial notification of an emergency or incident further written advice must be provided to the administering authority, including the following: a) results and interpretation of any samples taken and analysed; and b) outcomes of actions taken at the time to prevent or minimise unlawful environmental harm; and c) proposed actions to prevent a recurrence of the emergency or incident. Transition to New Standards
- A16
Where a condition of this environmental authority requires compliance with a standard, policy or guideline published externally to this environmental authority and the standard is amended or changed subsequent to the issues of this environmental authority the holder of this environmental authority must: a) comply with the amended or changed standard, policy or guideline within two years of the amendment or change being made, unless a different period is specified in the amended standard or relevant legislation, or where the amendment or change relates specifically to regulated structures referred to in condition D1, the time specified in that condition. b) until compliance with the amended or changed standard, policy or guideline is achieved, continue to remain in compliance with the corresponding provision that was current immediately prior to the relevant amendment or change. Complaints
- A17
Records must be kept of all environmental complaints received about the mining activity including the following details: _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (a) name, address and contact number of the complainant; (b) time and date of complaint; (c) reasons for the complaint; (d) investigations undertaken; (e) conclusions formed; (f) actions taken to resolve the complaint; (g) any abatement measures implemented; and (h) person responsible for resolving the complaint.
- A18
The holder of this environmental authority must, when requested by the administering authority, undertake relevant specified monitoring within a reasonable timeframe nominated or agreed to by the administering authority to investigate any complaint of environmental harm. The results of the investigation (including an analysis and interpretation of the monitoring results) and abatement measures, where implemented, must be provided to the administering authority within 10 business days of completion of the investigation, or no later than 10 business days after the end of the timeframe nominated by the administering authority to undertake the investigation. Third Party Auditing
- A19
The holder of this environmental authority must: a) By 31 December 2017, obtain from an appropriately qualified person a report on compliance with the conditions of this environmental authority; b) Obtain further such reports at regular intervals, not exceeding three-yearly intervals, from the completion of the report referred to above; and c) Provide each report to the administering authority within 90 days of its completion. Exploration
- A20
All exploration activities carried at the licensed place must comply with each of the Standard Environmental Conditions contained in the most recent version of the Eligibility criteria and standard
- A21
Notwithstanding condition 13 of the Eligibility criteria and standard conditions for exploration and permitted to conduct exploration activities within 1 kilometre but not within 100 metres of the Chillagoe - Mungana Caves National Park (Category A Environmentally Sensitive Area).
- A22
The holder of this environmental authority is permitted to carry out monitoring, environmental investigation and environmental management works within 100m of the Chillagoe - Mungana Caves National Park (Category A Environmentally Sensitive Area). Matter of State Environmental Significance _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- A23
Significant residual impacts to prescribed environmental matters located on King Vol are not authorised under this environmental authority or the Environmental Offsets Act 2014. King Vol Underground Extraction
- A24
Extraction of ore or decline development in the King Vol underground mine on ML20658 must not occur at a depth greater than 680 metres BGL. END OF CONDITIONS FOR SCHEDULE A SCHEDULE B - AIR General
- B1
Unless authorised by this environmental authority, the release of noxious or offensive odour, dust or any other airborne contaminant resulting from the mining activity must not cause environmental harm. Transportation
- B2
The holder of this environmental authority must ensure that vehicles (including trains) used for transporting bulk materials on or from the licensed place have appropriate load preparation to prevent the spillage and/or loss of particulate matter and/or windblown dust during transport. Point Source Releases to Air
- B3
Point source emissions to air must only be released to the atmosphere from the release points specified in Table B1 (Release Points). Table B1 (Release Points) Release Point Minimum Minimum Contaminant Contaminant Frequency of Release exit velocity Parameter Limit Monitoring Height above (m/s) ground (m) Total Solid Particulates 50 mg/Nm3 dry (TSP) Once within Oxides of three months Sulphur (sulphur of commencing Scrubber Stack dioxide and 300 mg/Nm3 (dry) smelting; and, sulphur trioxide as requested serving the 15 6 smelter plant as SO2 by the equivalent) administering authority Total Heavy thereafter. Metals1 1 mg/Nm3 (dry) (Note 1) _____________________________________________________________________________________________________________ Environmental authority EPML00562913 1 Total heavy metals includes the elements antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, selenium, tin, vanadium, or any compound containing one or more of those elements.
- B4
The release of contaminants to the atmosphere must not exceed the contaminant limit for any parameter specified in the Table B1 (Release Points) and must be: (a) directed vertically upwards with no impedance; and (b) be released in accordance with the velocity and minimum release height specified in Table B1 (Release Points).
- B5
Emissions from the `Scrubber Stack serving the smelter plant' must be monitored in accordance with the frequency of monitoring and for all contaminant parameters specified in Table B1 (Release Points).
- B6
Monitoring undertaken for condition B5 must: (a) Be in accordance with: i. The current edition of the administering authority's Air Quality Sampling Manual. If monitoring requirements are not described in the EHP's Air Quality Sampling Manual, monitoring protocols must be in accordance with a method as approved by New South Wales EPA, Victorian EPA or United States EPA; ii. Australian Standard AS 4323.1 - 1995 "Stationary source emissions Method 1: Selection of sampling provisions". (b) Include, but not be limited to the following tests: i. Gas velocity, volume and mass flow rate; ii. Temperature and pressure; and iii. Water vapour concentration. (c) Include recording of details pertaining to: i. Plant throughput rate at time of sampling; ii. Fuel type and consumption rate; iii. Any factors that may influence odour and particulate emissions; iv. The gaseous and/or particulate treatment system operating status; and v. Reference to the actual test methods and accuracy.
- B7
By 28 July 2017, the holder of this environmental authority must develop, implement and keep records of, a Stack Emission Monitoring Program (SEMP) to monitor and record the release of contaminants in accordance with condition B5. A copy of the SEMP must be provided to the administering authority on request. Ambient Air Quality and Dust Deposition Monitoring
- B8
Contaminant concentrations must not exceed any of the following limits when measured at any sensitive or commercial place: a) Dust deposition of 120 milligrams per square metre per day, averaged over one month, when monitored in accordance with the most recent version of Australian Standard AS3580.10.1 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Methods for sampling and analysis of ambient air--Determination of particulate matter-- Deposited matter - Gravimetric method. b) A concentration of particulate matter with an aerodynamic diameter of less than 10 micrometres
- B9
The holder of this environmental authority must develop and implement a dust deposition monitoring program at the monitoring locations specified in Table B2 (Dust Deposition Monitoring Sites) and shown in Schedule J - Figure 3 (Air Quality Monitoring Sites) at the monitoring frequency and for the contaminants specified in Table B3 (Dust Deposition Trigger Values and Limits). _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Table B2 (Dust Deposition Monitoring Sites) Site Easting (GDA Northing (GDA Monitoring Location 94 MGA - Zone 94 MGA - Zone 55) 55) Compliance Monitoring Site Eclipse 221835 8107425 South-west side of Eclipse Tower. The cave entrance is Cave adjacent to the access track and at the base of the karst. (CH21)1 The entrance is `A' shaped and approximately 4-5m tall. Piano cave 223403 8106129 Southern side of Piano Tower. The cave entrance is the (CH17)1 base of the tower. Mungana 2 221429 8107708 Near the top of the Mungana 2 karst, at the southern end. Cave Access is gained via the eastern talus slope of the karst. The entrance faces east and is at the base of the upper limestone outcrop. Red Dome 224518 8104917 The western face of Red Dome 5 karst, approximately 5 Cave 20m up the moderately sloped face with a large recessed opening. Another entrance is approximately 30m south- east of this entrance. Reference Monitoring Site Reference 224687 8103560 100m south of Red Dome Tailings Storage Facility site 1 1 CH number indicates Chillagoe Cave Club cave designation. Entrance to these caves are marked by a small red metal marker containing a `CH' number.
- B10
The mining activity must not cause the exceedance of any dust deposition limit specified in Table B3 (Dust Deposition Trigger Values and Limits) at any: a) Sensitive or commercial place; or b) Compliance monitoring site specified in Table B2 (Dust Deposition Monitoring Sites). Table B3 (Dust Deposition Trigger Values and Limits) Contaminant Limit Trigger Level Air Quality Limit Frequency Type/Measurement of Period Monitoring Dust Deposition Arsenic and its compounds Annual average 43 -g/m2/day - as arsenic1 Cadmium and its Annual average 23 -g/m2/day - Monthly compounds as cadmium1 Copper and its compounds Annual average 3303 -g/m2/day as copper1 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Contaminant Limit Trigger Level Air Quality Limit Frequency Type/Measurement of Period Monitoring Lead and its compounds as Annual average 1004 -g/m2/day 2505 -g/m2/day lead1 Dust deposition6 (total Monthly average - 1205 mg/m2/day insoluble matter) 1 Metal analysis must be carried out in accordance with a methodology sufficient to produce representative results capable of comparison against the respective limits & trigger values. 3 Trigger levels based on First General Administrative Regulation Pertaining to the Federal Emission Control Act (Technical Instructions on Air Quality Control - TA Luft) (Table 6 page 29). 4 Determined based on TA Luft lead deposition guidelines and the HIL A soil investigation levels from NEPC (1999) Table 5-A. 5 World Health Organisation - Air Quality Guidelines for Europe Second Edition, 2000 (Chapter 6 page 152). 6 Monitored in accordance with the most recent version of the relevant Australian Standard "AS 3580.10.1 Methods for Sampling and Analysis of Ambient Air - Determination of Particulates - Deposited Matter - Gravimetric Method" of 2003 (or most recent edition).
- B11
In the event of any monitoring showing exceedance of dust deposition trigger values or limits specified in Table B3 (Dust Deposition Trigger Values and Limits), the holder of this environmental authority must: (a) complete an investigation to identify the potential cause of the exceedance and the potential for environmental harm being caused or likely to be caused by the exceedance; and (b) provide a written report to the administering authority within three (3) months of the date of the original exceedance, outlining: (i) details of the investigation carried out; and (ii) actions taken to prevent environmental harm. Meteorological Monitoring
- B12
The holder of this environmental authority must establish a permanent automatic meteorological station to continuously measure and record wind speed and direction, temperature and rainfall data. Abrasive Blasting and Metal Surface Coating
- B13
Abrasive blasting activities must be carried out using measures that prevent or minimise contaminants, including abrasive blasting media, solvents and paint, being released to the receiving environment.
- B14
Only abrasive blasting waste consisting of garnet and surface coating wastes consisting of dried mastic paint flakes may be disposed of at the licensed place within the Mungana Tailings Storage Facility or at a facility licensed to take this material. END OF CONDITIONS FOR SCHEDULE B _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE C - LAND and REHABILITATION General
- C1
Other than as authorised under this environmental authority, contaminants must not be released to land in a manner which constitutes environmental harm. Rehabilitation Objectives
- C2
Land disturbed by mining must be rehabilitated in accordance with Table C1 (Rehabilitation Requirements). Table C1 (Rehabilitation Requirements) Mine Surface Total Post-mine Post mine land Rehabilitation Land Use Acceptance Domain & disturbance land capability1 Goals Criteria area (ha) of surface Feature of area (ha) of description The void containing water domain, for suitable for stock or better ID (refer domain the life of the As per Condition C3 Schedule J - mine (-10%) As per Condition C3 Figure 2a Use as an airstrip and Figure As per Condition C3 2b) Red Dome/Mungana 1 38.5 38.5 Water Storage VI Red Dome Open Pit 2 40.5 40.5 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land Western Waste will be class VI or Dump better; No more than 30% of all disturbed land is capability VIII. 3 71.7 71.7 L.I.G. and Greater than 20% of Red Dome Bushland all disturbed land Southern will be class VI or Waste Dump Airstrip better; No more than 30% of all disturbed land is capability VIII. 4 9.9 9.9 L.I.G. 2 and Greater than 20% of The Gap Bushland3 all disturbed land will be class VI or (access track) better; No more than 30% of all disturbed land is capability VIII. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description As per Condition C3 Schedule J - the life of the domain mine (-10%) As per Condition C3 Figure 2a and Figure As per Condition C3 2b) As per Condition C3 5 12.4 12.4 L.I.G. 2 and Greater than 20% of As per Condition C3 with the exception of criteria Red Dome Bushland3 all disturbed land for tree and shrub density Fixed Plant will be class VI or and diversity on the TSF cap better; No more than 30% of all disturbed land is capability VIII. 6 2.2 2.2 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land Process Water will be class VI or Ponds better; No more than 30% of all disturbed land is capability VIII. 7 34.7 34.7 L.I.G. 2 and Greater than 20% of Lower Opera Bushland3 all disturbed land Ck to Raw will be class VI or Water Dam better; No more than 30% of all disturbed land is capability VIII. 8 9.4 9.4 L.I.G. 2 Greater than 20% of all disturbed land Red Dome will be class VI or Accommodatio better; n and Offices No more than 30% of all disturbed land is capability VIII. 9 47.8 47.8 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land TSF will be class VI or better; No more than 30% of all disturbed land is capability VIII. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description As per Condition C3 Schedule J - the life of the domain mine (-10%) As per Condition C3 Figure 2a and Figure As per Condition C3 2b) As per Condition C3 As per Condition C3 10 4.8 4.8 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land Roche will be class VI or Workshop better; No more than 30% of all disturbed land is capability VIII. 11 23.8 23.8 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land Heap Leach will be class VI or Pads better; No more than 30% of all disturbed land is capability VIII. 12 9.1 9.1 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land Heap Leach will be class VI or Impoundment better; System No more than 30% of all disturbed land is capability VIII. 13 42.9 42.9 Water Storage VI Raw Water Dam 14 26.6 26.6 L.I.G. 2 and Greater than 20% of Red Dome Bushland3 all disturbed land North Western will be class VI or Waste Dump better; No more than 30% of all disturbed land is capability VIII. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description As per Condition C3 Schedule J - the life of the domain mine (-10%) As per Condition C3 Figure 2a and Figure As per Condition C3 for the disturbed area. 2b) For the area undisturbed by the mining activity 15 943.5 45.0 L.I.G. 2 and Greater than 20% of undisturbed area (32.5) the integrity attribute is the only Access Tracks Bushland3 all disturbed land success criteria to be and will be class VI or satisfied for sections of the Domain. Exploration better; No more than 30% of all disturbed land is capability VIII. 16 53.9 53.9 L.I.G. 2 and Greater than 20% of Mungana Bushland3 all disturbed land Open Pit will be class VI or better; No more than 30% of all disturbed land is capability VIII. 17 32.6 0.1 L.I.G. 2 and No change in land Bushland3 capability. Fauna Conservation Zones 18 10.3 0.2 L.I.G. 2, No change in land As per Condition C3 for the disturbed area. Bushland3, capability. For the area undisturbed by Historical Sites Historical site. the mining activity (Non undisturbed area (10.1) the integrity attribute is the only Indigenous) success criteria to be satisfied for sections of the Domain. 19 2.0 2.0 L.I.G. 2 and Greater than 20% of As per Condition C3 Mungana Bushland3 all disturbed land Workshop and will be class VI or Portal better; No more than 30% of all disturbed land is capability VIII. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description As per Condition C3 Schedule J - the life of the As per Condition C3 domain mine (-10%) As per Condition C3 Figure 2a As per Condition C3 and Figure As per Condition C3 2b) 20 17.9 8.8 L.I.G. 2 and Greater than 20% of Mungana ROM Bushland3 all disturbed land Pad and will be class VI or stockpiles better; No more than 30% of all disturbed land is capability VIII. 21 122.7 122.7 L.I.G. 2 and Greater than 20% of Bushland3 all disturbed land MGOPD will be class VI or Waste Rock better; Dump No more than 30% of all disturbed land is capability VIII. 22 31.6 25.3 L.I.G. 2 and Greater than 20% of Mungana Bushland3 all disturbed land Processing will be class VI or better; No more than 30% of all disturbed land is capability VIII. 23 147.0 147.0 L.I.G. 2 and Greater than 20% of Mungana TSF Bushland3 all disturbed land will be class VI or better; No more than 30% of all disturbed land is capability VIII. 24 14 14 L.I.G. 2 and Greater than 20% of Mungana Bushland3 all disturbed land Administration will be class VI or and Access better; No more than 30% of all disturbed land is capability VIII. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description As per Condition C3 Schedule J - the life of the domain mine (-10%) Figure 2a and Figure 2b) 25 1.0 1.0 L.I.G. 2 and Greater than 20% of Mungana Bushland3 all disturbed land Waste will be class VI or Disposal Area better; No more than 30% of all disturbed land is capability VIII. King Vol King Vol Box 0.5 TBA4 TBA4 Safe, non-polluting, As per the requirements of Cut TBA4 stable and self- condition C13 2.5 TBA4 TBA4 sustaining Waste Rock TBA4 As per the requirements of Dump 0.7 TBA4 TBA4 Safe, non-polluting, condition C13 TBA4 stable and self- Topsoil 0.9 TBA4 TBA4 sustaining As per the requirements of Stockpile TBA4 condition C13 5.5 TBA4 Safe, non-polluting, ROM TBA4 stable and self- As per the requirements of 5.2 TBA4 TBA4 sustaining condition C13 Clean Water Dam 3.1 TBA4 TBA4 Safe, non-polluting, As per the requirements of stable and self- condition C13 Mine Water 0.1 TBA4 sustaining Dam As per the requirements of 0.3 TBA4 Safe, non-polluting, condition C13 Sediment dam stable and self- 0.9 TBA4 sustaining As per the requirements of Surface condition C13 infrastructure 0.1 TBA4 Safe, non-polluting, sediment Trap stable and self- As per the requirements of sustaining condition C13 Explosives storage yard Safe, non-polluting, As per the requirements of stable and self- condition C13 Mine sustaining infrastructure As per the requirements of Safe, non-polluting, condition C13 area stable and self- sustaining As per the requirements of Fuel storage condition C13 and power Safe, non-polluting, generation stable and self- sustaining Safe, non-polluting, stable and self- sustaining Safe, non-polluting, stable and self- sustaining _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Mine Total Domain & Surface disturbance Post-mine Post mine land Rehabilitation Land Use Acceptance Feature of surface land capability1 Goals Criteria area (ha) area (ha) of ID (refer of domain, for description Schedule J - the life of the domain mine (-10%) Figure 2a and Figure 2b) Roads and 6.8 TBA4 TBA4 Safe, non-polluting, As per the requirements of tracks TBA4 stable and self- condition C13 0.3 TBA4 sustaining Infrastructure As per the requirements of area above Safe, non-polluting, condition C13 stable and self- box cut sustaining Water 6.1 TBA4 TBA4 Safe, non-polluting, As per the requirements of Management stable and self- condition C13 Infrastructure sustaining Access tracks 3.0 TBA4 TBA4 Safe, non-polluting, As per the requirements of and exploration TBA4 stable and self- condition C13 0.2 TBA4 TBA4 sustaining Exploration TBA4 As per the requirements of yard 0.6 TBA4 Safe, non-polluting, condition C13 stable and self- Road train 1.0 TBA4 sustaining As per the requirements of loadout condition C13 Safe, non-polluting, Waste stable and self- As per the requirements of Disposal sustaining condition C13 Trench Safe, non-polluting, stable and self- sustaining Emergency 0.3 TBA4 TBA4 Safe, non-polluting, As per the requirements of camp TBA4 stable and self- condition C13 0.5 TBA4 TBA4 sustaining Construction TBA4 As per the requirements of laydown area 0.8 TBA4 Safe, non-polluting, condition C13 stable and self- Laydown area 0.8 TBA4 sustaining As per the requirements of condition C13 Remnant Safe, non-polluting, vegetation stable and self- As per the requirements of consistent with sustaining condition C13 Regional Ecosystem Safe, non-polluting, 9.11.8a - stable, self-sustaining Terrestrial Groundwater and remnant Dependent vegetation consistent Ecosystem5 with regional ecosystem 9.11.8a - Terrestrial Groundwater Dependent Ecosystem5 1 Land Capability defined by Rosser et al (1974) Land Capability Classification for Agricultural Purposes. Division of Land Utilisation Technical Bulletin No. 14 QDPI. 2 L.I.G. (Low Intensity Grazing) defined by criteria listed in Land Use Acceptance Criteria. 3 Bushland defined by criteria listed in Land Use Acceptance Criteria. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 4 Detail to be provided to the administering authority by 15 July 2018. 5 As depicted in Figure 5 (NRA mapped RE 9.11.8a with the LoM 0.2 m drawdown contour) in the document entitled "King Vol Project Potential Impact to Environmental Values of Groundwater Dependent Ecosystems - Addendum 1". Grazing and Bushland Rehabilitation Outcome
- C3
Areas which are to be rehabilitated to Low Intensity Grazing and Bushland must generate a self- sustaining vegetation with projective cover, species composition and species distribution as defined by the criteria in Table C2 (Rehabilitation Success Criteria). Table C2 (Rehabilitation Success Criteria) Attribute Criteria Monitoring Methods Density Groundcover biomass and tree density is equal to, or greater than, 50% Vegetation Diversity of that of the corresponding measure in analogue sites of equivalent Community capability. (Biomass, Integrity Composition and Structure) Productivity Landform Species richness is to be equal to, or greater than, 50% of that of Vegetation stability analogue sites of equivalent capability. Minimum requirement is: Community (Biomass, (i) Minimum of 3 groundcover species and 3 tree and shrub species Composition and Structure (ii) 70% or more of tree and shrub species will be native (iii) the remaining 30% or less of tree and shrub species must comprise of recognised pasture species and agreed upon in the Post Mine Land Use Plan 70% or more of tree and shrub species will be native and weeds are Vegetation controlled as required under the Land Protection (Pest and Stock Route Community Management) Act 2002. (Biomass, Composition and The remaining 30% or less of tree and shrub species must comprise of Structure recognised pasture species and agreed upon in the Post Mine Land Use Plan Groundcover biomass is equal to, or greater than, 50% of that of Vegetation analogue sites of equivalent capability. Community (Biomass) (i) erosion will not prevent the reinstatement of the nominated land Erosion Gully capability and land use monitoring (ii) minimising the extent of rill erosion to depth less than 300mm. Gullies Vegetation will be accepted such that they do not prevent achievement of desired Community (Surface land capability and do not exceed 2m in depth, are as wide as deep; and Cover) (iii) gullies would not be accepted in areas covered by less than 3 metres Land Capability of cover / capping material eg tailings dam and other areas where potentially harmful material has been buried; and (iv) grazing and or bushland is possible on final land form; (v) void slopes are not to exceed 65 degrees in consolidated material. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Attribute Criteria Monitoring Methods Self (i) groundcover biomass and tree density is equal to, or greater than, Vegetation sustaining 50% of that of the corresponding measure in analogue sites of Community (include equivalent capability for 3 consecutive years. flowering fruiting and seedlings in (ii) greater than 5 individuals of either shrub, grass or tree species will be collection of volunteers or 2nd generation volunteers and not weeds. community composition and structure data). PMLU (i) grazing and or bushland is possible on the final landform. Land capability (ii) void and Raw Water Dam containing water suitable for stock. Vegetation Community (iii) land capability proportions (as defined in Schedule - C Table 1) for each domain achieved. (Biomass) (iv) potential grazing intensity exceeds 1 beast / 40 Ha. Source: NRA 2004 - Red Dome 2004 rehabilitation monitoring report
- C4
The holder of this environmental authority must mine in accordance with the Conservation Zones and
- C5
defined in Figures 3a of the Mungana Gold Open Pit Project Environmental Management Plan (September 2011). Rehabilitation must commence progressively in accordance with the plan of operations. Disturbance to Land
- C6
When carrying out the mining activity the holder of this environmental authority must: (a) avoid, minimise or mitigate (in order of preference) any impacts on areas of sensitive vegetation or other areas of ecological value; (b) minimise the risk of injury, harm, or entrapment to wildlife and stock; (c) minimise disturbance to land that may otherwise result in land degradation; (d) prior to carrying out any disturbance activities, make all relevant staff, contractors or agents carrying out those activities, aware of the location of any Category A, B or C Environmentally Sensitive Area (ESA) and the relevant requirements of this environmental authority; (e) if significant disturbance to land is unavoidable, the holder of this environmental authority must clear vegetation in a way which minimises fragmentation; and (f) manage cleared vegetation so that it is stockpiled in a manner that facilitates salvage, respreading or burning and does not impede vehicle, stock or wildlife movements. Topsoil
- C7
Topsoil and subsoils must be stripped and stockpiled ahead of mining to a depth determined from soil surveys to ensure that useable soil resources are preserved for rehabilitation.
- C8
Topsoil and subsoil stockpiles must be managed to ensure stability and to minimise the release of contaminants. Measures must include: _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (a) vegetating stockpiles; (b) minimising the height of stockpiles; and (c) re-using stockpiles as soon as possible.
- C9
A topsoil inventory which identifies the topsoil requirements for the mining project and availability of suitable topsoil on site must be detailed in the Plan of Operations. Chemicals and Flammable or Combustible Liquids
- C10
All explosives, hazardous chemicals, corrosive substances, toxic substances, gases, flammable or
- C11
combustible liquids and dangerous goods must be stored and handled in accordance with the current,
- C12
relevant Australian Standard where such is applicable. Where no relevant Australian Standard exists, store such materials within an effective on-site containment system. Minimise the potential for contamination of land and waters by diverting stormwater around contaminated areas and facilities used for the storage of chemicals and flammable or combustible liquids. Post Mine Land Use Plan
- C13
By 15 July 2018, the current Post Mine Land-use Plan (`PMLUP') that describes how the rehabilitation objectives in condition C2 will be achieved must be updated, documented and implemented for all stages of the mining activities. The PMLUP must at minimum include: a) Schematic representation of the proposed final land form inclusive of site drainage features; b) Details of proposed slope design and erosion and sediment controls; c) Proposed cover designs for encapsulation of waste material, including performance criteria; d) Proposed re-vegetation methods inclusive of plant species selection, propagation methods and establishment of suitable plant growth medium (i.e. top soil); e) Materials balance for all rehabilitation requirements including available top soil and material suitable for encapsulating waste in accordance with the proposed encapsulation methodology; f) Geotechnical, geochemical and hydrological studies necessary to demonstrate likely success of proposed rehabilitation methodology to achieve the required rehabilitation outcomes; g) An investigation of proposed residual voids including potential for generation/mobilisation of contaminants, potential pathways for release of contaminants to waters (including groundwater) and a long-term void water balance model; and h) A rehabilitation monitoring program sufficient to identify if required rehabilitation outcomes have been achieved. Residual Void Studies
- C14
The holder of this environmental authority must: _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- C15
a) Submit a revised residual void model within 12 months of commencing mining of Mungana Gold Open Pit Development, giving due regard to comments made by the administering authority; b) The model in a) must be subject to review each subsequent five years; c) Any amendment to the approved residual void model that may arise from the reviews in a) or b) must be based on any significant changes to groundwater characteristics or other data considered relevant by the administering authority that becomes available from the groundwater monitoring program; and d) Notwithstanding obligations under a), b) or c) the holder of the environmental authority must undertake residual void water balance modelling during mine closure planning, in consultation with the administering authority, to ensure assumptions regarding surface water runoff and groundwater ingress are suitable for the site. Complete an investigation into residual voids and submit a report to the administering authority within 12 months of commencing mining of Mungana Gold Open Pit Development proposing acceptance criteria to meet the outcomes in condition C16 and landform design criteria for review and comment by the administering authority. The investigation must at a minimum include the following: (a) a study of options available for minimising final void area and volume; (b) develop design criteria for rehabilitation of final voids; (c) a void hydrology study, addressing the long-term water balance in the voids, connections to groundwater resources and water quality parameters in the long term; (d) a study of the measures to protect the residual voids, un-compacted overburden and workings from the "probable maximum flood" level based on the Bureau of Meteorology's "probable maximum precipitation" forecast for the locality; (e) a pit wall stability study, considering the effects of long-term erosion and weathering of the pit wall and the effects of significant hydrological events; (f) a study of void capability to support native flora and fauna; and (g) a proposal/s for end of mine void rehabilitation success criteria and final void areas and volumes. Note: These studies must be undertaken during the life of the mine, and will include detailed research and modelling. Residual Void Outcome
- C16
Residual voids must not cause any environmental harm to land, surface waters or any recognised groundwater aquifer, other than the environmental harm constituted by the existence of the residual void itself, and subject to any other condition within this environmental authority. Rehabilitation Monitoring Program
- C17
A rehabilitation monitoring program must be implemented by an appropriately qualified person upon commencement of rehabilitation identified in Table C1 (Rehabilitation Requirements). _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- C18
The holder of this environmental authority must conduct rehabilitation monitoring in accordance with the program developed in condition C17 including sufficient spatial and temporal replication to enable scientifically justifiable conclusions to be made, as established in the rehabilitation monitoring program.
- C19
Verification of rehabilitation success is to be carried out for each domain. Monitoring must be carried out for each domain at a minimum sampling intensity of 1:15,000 and must include sufficient replication to enable statistical analysis of results at an acceptable power as established in the rehabilitation monitoring program. Infrastructure
- C20
All buildings, structures, mining equipment and plant erected and/or used for the mining activity must be removed from the site prior to surrender, except where agreed in writing by the landowner. Contaminated Land
- C21
Before applying for surrender of a mining lease, the holder must (if applicable) provide to the administering authority a site investigation report under the Act, in relation to any part of the mining lease which has been used for notifiable activities or which the holder is aware is likely to be contaminated land, and also carry out any further work that is required as a result of that report to ensure that the land is suitable for its final land use. Contaminated Water Release to Land
- C22
Contaminated water released to land must be monitored in accordance with Table C3 (Contaminant release limits to land) and must not exceed the release limits in Table C3 (Contaminant release limits to land). Table C3 (Contaminant release limits to land) Contaminant Unit Release Limit Limit Type Frequency pH pH units 6.0-91 Range Monthly EC -s/cm 1,000 Maximum Monthly Cyanide as un- g/L 7 Maximum Monthly ionised HCN, measured as [CN]3 Metals and Metalloids2 Total Arsenic mg/L 2.0 Maximum Monthly Total Cadmium mg/L 0.05 Maximum Monthly Total Cobalt mg/L 0.1 Maximum Monthly Total Copper mg/L 5.0 Maximum Monthly Total Lead mg/L 5.0 Maximum Monthly Total Molybdenum mg/L 0.05 Maximum Monthly Total Selenium mg/L 0.05 Maximum Monthly Total Zinc mg/L 5.0 Maximum Monthly 1. Default trigger values - from ANZECC/ARMCANZ (2000), `General water uses - pH' Section 4.2.10.1. 2. Default trigger values - from ANZECC/ARMCANZ (2000), agricultural irrigation water short-term trigger value (up to 20 years) triggers for heavy metals and metalloids, Table 4.2.10. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 3. Extracted from Table 3.4.1 of the Australian and New Zealand guidelines for fresh and marine water quality (ANZECC & ARMCANZ 2000), trigger values for 95% Species protection.
- C23
Contaminants must only be released to land in accordance with the conditions of this approval and at the following locations: a) At King Vol, within the nominated areas identified in Schedule J - Figure 6 (Water Management Layout); and b) At Mungana, within the approved TSF domain (23) identified in Schedule J Figure 2a(Red Dome/Mungana - Domain Map) at a rate of up to 2ML per day until 31st December 2023; and c) Other land within the boundaries of ML20658 for the purpose of dust suppression and/or fire fighting. d) Other land within the boundaries of ML4910, ML4911, ML4921, ML4928, ML4977, ML5176, ML5319 and ML20640 for the purposes of dust suppression in areas draining to on-site water storages and/or firefighting.
- C24
The irrigation of contaminants to land must be carried out in a manner such that: a) Drainage to groundwater and or subsurface flows of contaminants to surface waters are prevented; b) Surface pondage and or run-off of contaminants is prevented; c) Degradation of soil structure does not result in environmental harm; d) Soil sodicity and/or the build-up of heavy metals and/or metalloids in the soil and/or subsoil does not result in environmental harm; e) Spray drift does not occur beyond the identified limits of the areas identified in Condition C23: f) Impacts to vegetation do not occur (e.g. die back)
- C25
All contaminants released to land must be monitored at the frequency and for the parameters specified in Table C3 (Contaminant release limits to land).
- C26
The daily volume of contaminants released to land must be measured and records kept of the volumes of contaminants released. END OF CONDITIONS FOR SCHEDULE C _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE D - REGULATED STRUCTURES (including structures containing mineral waste) Assessment of consequence category
- D1
The consequence category of any structure must be assessed by a suitably qualified and experienced person in accordance with the Manual for Assessing Consequence Categories and Hydraulic Performance of Structures (ERS/2016/1993) at the following times: a) prior to the design and construction of the structure, if it is not an existing structure; or b) prior to any change in its purpose or the nature of its stored contents.
- D2
A consequence assessment report and certification must be prepared for each structure assessed and the report may include a consequence assessment for more than one structure.
- D3
Certification must be provided by the suitably qualified and experienced person who undertook the assessment, in the form set out in the Manual for Assessing Consequence Categories and Hydraulic Performance of Structures (ERS/2016/1993). Design and Construction of a Regulated Structure
- D4
Conditions D5 to D9 inclusive do not apply to existing structures.
- D5
All regulated structures must be designed by, and constructed1 under the supervision of, a suitably qualified and experienced person in accordance with the requirements of the Manual for Assessing Consequence Categories and Hydraulic Performance of Structures (ERS/2016/1993).
- D6
Construction of a regulated structure is prohibited unless: a) the holder has submitted a consequence category assessment report and certification to the administering authority; and b) certification for the design, design plan and the associated operating procedures has been certified by a suitably qualified and experienced person in compliance with the relevant condition of this authority.
- D7
Certification must be provided by the suitably qualified and experienced person who oversees the preparation of the design plan, in the form set out in the Manual for Assessing Consequence Categories and Hydraulic Performance of Structures (ERS/2016/1993), and must be recorded in the Register of Regulated structures.
- D8
Regulated structures must: a) be designed and constructed in compliance with the Manual for assessing consequence categories and b) be designed and constructed with due consideration given to ensuring that the design integrity would not be compromised on account of: i. flood waters from entering the regulated dam from any watercourse or drainage line; and ii. wall failure due to erosion by flood waters arising from any watercourse or drainage line. c) must meet the hydraulic performance criteria stated in Table D1 - Hydraulic Performance Criteria for Regulated Structures _____________________________________________________________________________________________________________ Environmental authority EPML00562913 1 Certification of design and construction may be undertaken by different persons.
- D9
Certification by the suitably qualified and experienced person who supervises the construction must be submitted to the administering authority on the completion of construction of the regulated structure, and state that: (a) the 'as constructed' drawings and specifications meet the original intent of the design plan for that regulated structure; and (b) construction of the regulated structure is in accordance with the design plan. Table D1 (Hydraulic Performance Criteria for Regulated Structures) Name of Regulated Spillway Capacity AEP Design Storage Mandatory Reporting Level Allowance AEP Dam AEP N/A Red Dome Tailings 1-in-10,000 year ARI Nil (Surface has been Storage Facility rehabilitated) Mungana Tailings Probable Maximum 1-in-100 year ARI, 2 month 1-in-100 year ARI, 72 hour Storage Facility (Cell 1 event1 Flood (PMF) wet season to Cell 4) King Vol Mine Water 1 in 1000 year ARI, 1 hr 1 in 20 year ARI, 2 month 1 in 10 year ARI, 72 hr event1 wet season 1 in 10 year ARI, 72 hr event1 Dam duration 1 in 20 year ARI, 2 month King Vol Sediment Dam 1 in 1000 year ARI, 1 hr wet season duration 1 Refers to the level below the spillway crest, required to contain either the AEP (design risk) 72hr storm or the AEP (design risk) wave allowance, whichever is lower.
- D10
All affected persons must be provided with a copy of the emergency action plan in place for each regulated structure: a) for existing structures that are regulated structures, within 10 business days of this condition taking effect; b) prior to the operation of the new regulated structure; and c) if the emergency action plan is amended, within 5 business days of it being amended. Operation of a regulated structure
- D11
Operation of a regulated structure, except for an existing structure, is prohibited unless the holder has submitted to the administering authority in respect of regulated structure, all of the following: a) one paper copy and one electronic copy of the design plan and certification of the `design plan' in accordance with condition D6; b) a set of `as constructed' drawings and specifications; c) certification of the `as constructed drawings and specifications' in accordance with condition D9; _____________________________________________________________________________________________________________ Environmental authority EPML00562913 d) where the regulated structure is to be managed as part of an integrated containment system for the purpose of sharing the Design Storage Allowance (DSA) volume across the system, a copy of the certified system design plan; e) the requirements of this authority relating to the construction of the regulated structure have been met; f) the holder has entered the details required under this authority, into a register of regulated structures; and g) there is a current operational plan for the regulated structure.
- D12
For existing structures that are regulated structures: a) where the existing structure that is a regulated structure is to be managed as part of an integrated containment system for the purpose of sharing the DSA volume across the system, the holder must submit to the administering authority within 12 months of the commencement of this condition a copy of the certified system design plan including that structure; and b) There must be a current operational plan for the existing structures.
- D13
Each regulated structure must be maintained and operated, for the duration of its operational life until decommissioned and rehabilitated, in compliance with the current operational plan and, if applicable, the current design plan and associated certified `as constructed' drawings. Mandatory Reporting Level
- D14
Conditions D15 to D18 inclusive only apply to Regulated Structures which have not been certified as low consequence category for `failure to contain - overtopping'.
- D15
The mandatory reporting level (MRL) must be marked on a regulated dam in such a way that during routine inspections of that dam, it is clearly observable.
- D16
The holder of this environmental authority must, as soon as practical and within forty-eight (48) hours of becoming aware, notify the administering authority when the level of the contents of a regulated dam reaches the MRL.
- D17
The holder of this environmental authority must, immediately on becoming aware that the MRL has been reached, act to prevent the occurrence of any unauthorised discharge from the regulated dam.
- D18
The holder must record any changes to the MRL in the Register of Regulated Structures. Design Storage Allowance
- D19
The holder must assess the performance of each regulated dam or linked containment system over the preceding November to May period based on actual observations of the available storage in each regulated dam or linked containment system taken prior to 1 July of each year.
- D20
By 1 November of each year, storage capacity must be available in each regulated dam (or network of linked containment systems with a shared DSA volume), to meet the DSA volume for the dam (or network of linked containment systems).
- D21
The holder must, as soon as possible and within forty-eight (48) hours of becoming aware that the regulated dam (or network of linked containment systems) will not have the available storage to meet the DSA volume on 1 November of any year, notify the administering authority. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- D22
The holder must, immediately on becoming aware that a regulated dam (or network of linked containment systems) will not have the available storage to meet the DSA volume on 1 November of any year, act to prevent the occurrence of any unauthorised discharge from the regulated dam or linked containment systems. Annual Inspection Report
- D23
Each regulated structure must be inspected each calendar year by a suitably qualified and experienced person.
- D24
At each annual inspection, the condition and adequacy of all components of the regulated structure must be assessed and a suitably qualified and experienced person must prepare an annual inspection report containing details of the assessment and include recommended actions to ensure the integrity of the regulated structure or a positive statement that no recommendations are required.
- D25
The suitably qualified and experienced person who prepared the annual inspection report must certify the report in accordance with the Manual for Assessing Consequence Categories and Hydraulic
- D26
The holder must: Within 20 business days of receipt of the annual inspection report, provide to the administering authority: a) The recommendations section of the annual inspection report; and b) If applicable, any actions being taken in response to those recommendations; and c) If, following receipt of the recommendations and (if applicable) recommended actions, the administering authority requests a full copy of the annual inspection report from the holder, provide this to the administering authority within 10 business days of receipt of the request. Transfer arrangements
- D27
The holder must provide a copy of any reports, documentation and certifications prepared under this authority, including but not limited to any Register of Regulated Structures, consequence assessment, design plan and other supporting documentation, to a new holder on transfer of this authority. Decommissioning and Rehabilitation
- D28
Regulated structures must not be abandoned but be either: a) decommissioned and rehabilitated to achieve compliance with Schedule C of this environmental authority; or b) be left in-situ for a use by the landholder provided that: i) it no longer contains contaminants that will migrate into the environment; and ii) it contains water of a quality that is demonstrated to be suitable for its intended use(s); and iii) the holder of the environmental authority and the landholder agree in writing that the dam will be used by the landholder following the cessation of the environmentally relevant activity(ies); and landholder is responsible for the dam, on and from an agreed date. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- D29
Each regulated structure named in column 1 of Table D2 (Basic Details of Regulated Structures), must be consistent with the details noted in columns 2 through to and including column 7 of Table D2 (Basic Details of Regulated Structures). Table D2 (Basic Details of Regulated Structures) Regulated Structure Hazard Maximum Maximum Maximum Spillway Purpose Category surface depth (m) Level volume Storage of Cyanide area at the (m3) (m AHD) tailings spillway (Ha) Storage of tailings containing cyanide Red Dome Tailings High 30 7,000,000 39 360.0 Storage of tailings Storage Facility containing cyanide Mine water storage Mungana Tailings High 28.1 2,605,000 21.9 321.4 Sediment control Storage Facility (Cell 1) Mungana Tailings High TBA1 TBA1 TBA1 TBA1 Storage Facility (Cell 2 to Cell 4) King Vol Mine Water Significant 25.9 118,300 10.8 258.8 Dam King Vol Sediment Significant 10.1 74,000 10.6 238.6 Dam 1 Detail to be provided to the administering authority prior to commencement of construction. Register of Regulated Structures
- D30
A Register of Regulated Structures must be established and maintained by the environmental authority holder for each regulated structure.
- D31
The environmental authority holder must provisionally enter the required information in the Register of Regulated Structures when a design plan for a regulated structure is submitted to the administering authority.
- D32
The environmental authority holder must make a final entry of the required information in the Register of Regulated Structures once compliance with condition D11 has been achieved.
- D33
The environmental authority holder must ensure that the information contained in the Register of Regulated Structures is current and complete on any given day.
- D34
All entries in the Register of Regulated Structures must be approved by the chief executive officer for the environmental authority holder, or their delegate, as being accurate and correct.
- D35
The environmental authority holder must, at the same time as providing the annual return, supply to the administering authority a copy of the records contained in the Register of Regulated Structures, in the electronic format required by the administering authority. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Red Dome Tailings Storage Facility Management
- D36
The holder of this environmental authority must implement a procedure that prescribes maintenance, management and monitoring of seepage from the Red Dome TSF.
- D37
The holder of this environmental authority must monitor the rate of seepage from the Red Dome tailings storage facility and rainfall at the site on a daily basis.
- D38
The holder of the Environmental Authority must take all reasonable and practical measures to ensure that discharges from the Red Dome Tailings Storage Facility leachate pipe does not form precipitates on the pit wall.
- D39
The holder of this Environmental Authority shall maintain and operate seepage collection works for the Red Dome Tailings Storage Facility, seepage waters collected can be returned to the process circuit.
- D40
The holder of this Environmental Authority shall maintain and operate seepage collection works for the Red Dome Tailings Storage Facility to ensure that all leachate escaping from the Red Dome Tailings Storage Facility is ultimately directed to the Red Dome Pit. No release of contaminants to land is authorised.
- D41
Upon commissioning of a gold cyanidation extraction plant as part of minerals processing at Red
- D42
Dome/Mungana, free standing liquor within the Mungana TSF outside of the decant pond must be
- D43
monitored weekly when there is liquor present, and it must not exceed 10mg/L Weak Acid Dissociable (WAD) cyanide for 3 out of 5 consecutive samples. The decant pond within the Mungana TSF is authorised to contain liquor at a maximum of 20mg/L WAD cyanide while mortality rates are acceptable with respect to condition D43 in the opinion of the administering authority. Upon disposal of tailings into the tailings storage facility, the holder of this environmental authority must inspect the tailings storage facility weekly to identify and register any fauna mortalities. This information will be made available to the administering authority upon request and within forty eight (48) hours of the discovery of any fauna mortalities. Details of mortalities will include but not be limited to: a) animal species of the discovery of any fauna mortality; b) number of animals; c) location; and d) likely cause of death.
- D44
If in the opinion of the administering authority, the mortality rate referred to in condition D43 is
- D45
unacceptable, the holder of this environmental authority will be required to develop and implement an action plan to reduce the mortality rate and provide the action plan to the administering authority within one (1) month of the plan being required. The decant pond on the Mungana TSF must be developed and maintained to limit access by birds and other native fauna. END OF CONDITIONS FOR SCHEDULE D _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE E - GENERAL AND REGULATED WASTE MANAGEMENT Non Mineral Waste Management Program
- E1
A waste management program must be developed and implemented prior to the commencement of mining or processing and maintained for all mining activity at the licensed place. The waste management program must be submitted to the administering authority upon request. The program must include: (a) a description of the mining activity that may generate waste; (b) waste management control strategies including; i) recording of the types and amounts of wastes generated by the mining activity; ii) segregation of the wastes; iii) storage of the wastes; iv) transport of the wastes; and v) monitoring and reporting matters concerning the waste. (c) the hazard characteristics of the wastes generated including disposal procedures for hazardous wastes; (d) a program for reusing, recycling or disposing of all wastes; (e) how the waste will be dealt with in accordance with the waste management hierarchy, including a description of the types and amounts of waste that will be dealt with under each of the waste management practices in the waste management hierarchy (i.e. avoidance, reuse, recycling, energy recovery, disposal); (f) procedures for identifying and implementing opportunities to minimise the amount of waste generated, promote efficiency in the use of resources and improve the waste management practices employed; (g) procedures for dealing with accidents, spills, and other incidents that may impact on waste management; (h) details of any accredited management system employed, or planned to be employed, to deal with the waste; (i) how often the performance of the waste management practices will be assessed; (j) the indicators or other criteria on which the performance of the waste management practices will be assessed; and (k) staff training and induction to the waste management program. Waste Disposal
- E2
All general and regulated waste other than authorised under condition E3, E11 and E16, must be removed from the site to a facility that is lawfully able to accept the waste. Waste Disposal (Red Dome/Mungana)
- E3
The only waste that can be disposed of on site is waste generated on site and is limited to: (a) waste rock; _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (b) tailings; (c) tyres; and (d) construction and demolition waste, which includes bricks, pavers, concrete, scrap metal, glass, plasterboard, cardboard, paper and timber.
- E4
Construction and demolition waste deposited in the active waste disposal trench must be compacted and covered with a layer of inert material following placement of the waste into the trench.
- E5
Litter control methods must be effectively implemented at the active waste disposal trench.
- E6
The active waste disposal trench must be constructed, designed, engineered and operated to minimise the generation of leachate including a system of diversion drains or embankments to divert surface waters away from any area where contact with wastes or sources of contamination may occur.
- E7
Prior to constructing a waste disposal trench Schedule J - Figure 5a (Waste Disposal Trenches) is required to be updated. Any waste disposal trench constructed must be maintained in accordance with the waste disposal area identified in Schedule J - Figure 5a (Waste Disposal Trenches). Notwithstanding any other condition of this environmental authority, such records must be maintained until the administering authority approves the surrender of this environmental authority.
- E8
Incineration of explosive packaging and handling material must be undertaken in accordance with documented procedures that are to be included in the Waste Management Program, detailed in condition E1 that ensures: (a) only these materials will be incinerated on site; (b) incineration is conducted in an environmentally sound manner, in a designated area / facility; (c) practices are in place to minimise nuisance from smoke and ash; (d) procedures are developed and implemented on how ashes will be dealt with after incineration; and (e) a contingency plan is developed and implemented if nuisance is caused by incineration.
- E9
Unless operating in accordance with condition E8, waste must not be burnt or taken off site and burnt. Waste Disposal (King Vol)
- E10
Construction and demolition waste (bricks, pavers, scrap metal, glass, plasterboard, cardboard/paper, timber) disposed of at the licensed place at a rate of less than 50 tonnes per year must only be disposed of in the waste disposal trench constructed within the soil profile located on King Vol as depicted in Schedule J - Figure 5b (King Vol waste disposal trenches) and must: _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (a) take effective measures to ensure that all wastes disposed of at the licensed place are not disposed of: i. beyond the active waste disposal trenches; and ii. into waters or leachate collected at the base of the waste disposal trenches. (b) ensure that wastes deposited in the active waste disposal trenches are consolidated, compacted and covered with a layer of inert earthen material or other non-combustible inert material. (c) provide relocatable litter screens or other methods of litter control at the active waste disposal trenches in order to effectively capture paper or other wind-blown litter generated by waste disposal activities. (d) conduct waste disposal operations in a nuisance free manner, particularly regarding mosquito breeding and rat harbourage and breeding. (e) operate and manage the active waste disposal trenches to minimise the generation of leachate including a system of suitable diversion drains or embankments to divert surface waters away from any area where contact with wastes or contaminants may occur. (f) Maintain a record of the location of the waste disposal trenches used for waste disposal. Regulated Waste
- E11
Regulated waste, other than that authorised to be disposed of on site under this authority, must only be removed and transported from the site by a person who holds a current authority to transport such wastes to a facility that is lawfully able to accept the waste under the Environmental Protection Act 1994.
- E12
Regulated waste generated in the mining activity can be temporarily stored on site prior to removal provided it is for a period no longer than six (6) months and it is stored in a manner to prevent risk of fire or contamination of land or waters.
- E13
Each container of regulated waste stored awaiting movement from the licensed place must be clearly marked to identify the contents.
- E14
Where regulated waste is removed from the licensed place, the holder of this environmental authority must ensure that: (a) Records are kept of the following: (i) the date, quantity and type of waste removed; and (ii) name of the regulated waste transporter that removed the waste; and (iii) the intended treatment/disposal destination of the waste. Note: Records of documents maintained in compliance with a waste tracking system established under the Environmental Protection Act 1994 or any other law for regulated waste will be deemed to satisfy this environmental authority condition.
- E15
If the holder of this environmental authority becomes aware that a person has removed regulated waste from the licensed place and disposed of the regulated waste in a manner which is not authorised by this environmental authority or improper or unlawful, then the holder of this environmental authority must, as soon as practicable, notify the administering authority of all relevant facts, matters and circumstances known concerning the disposal. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- E16
Notwithstanding condition E3, sewage sludge generated at the Chillagoe village sewage treatment plant may be disposed of at the Mungana Tailings Storage Facility. Tailings Disposal
- E17
Tailings must be managed in accordance with procedures contained within the current plan of operations. These procedures must include provisions for: a) containment of tailings b) the management of seepage and leachates both during operation and the foreseeable future c) the control of fugitive emissions to air d) a program of progressive sampling and characterisation to identify acid producing potential and metal concentrations of tailings e) maintaining records of the relative locations of any other waste stored within the tailings f) rehabilitation strategy g) monitoring of rehabilitation, research and/or trials to verify the requirements and methods for decommissioning and final rehabilitation of tailings, including the prevention and management of acid mine drainage, erosion minimisation and establishment of vegetation cover. Capping System Plan
- E18
One (1) month following deposition of tailings in the tailings storage facility the holder of this environmental authority must commence trials to establish suitable capping systems for infrastructure on site including but not limited to the tailings storage facility and waste rock dumps.
- E19
Two (2) years following deposition of tailings in the tailings storage facility and once every two (2) years thereafter the holder of this environmental authority must submit a report to the administering authority detailing the success and findings from the capping system trials required in condition E18.
- E20
Four (4) years following deposition of tailings in the tailings storage facility the holder of this environmental authority must submit to the administering authority a report nominating the most appropriate capping system based on results from trials required in condition E18. The holder of this environmental authority must give due consideration to any comments made on the capping system plan by the administering authority and amend the capping system plan accordingly. Waste Rock Disposal
- E21
By 31 March 2017, the holder of this environmental authority must develop, implement and submit to the administering authority a waste rock management plan.
- E22
Waste rock disposal must not occur on the site unless the holder of this environmental authority has submitted to the administering authority a waste rock management plan. The waste rock management plan must be certified by an appropriately qualified person, to ensure the plan has addressed the requirements of this environmental authority in accordance with best practice environmental management.
- E23
The waste rock management plan must include: _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- E24
(a) a detailed design of the waste rock dumps; (b) characterisation of the waste rock to predict the quality of runoff and seepage generated, including salinity, acidity, alkalinity, dissolved metals, metalloids and non-metallic inorganic substances; (c) a program of progressive sampling to validate pre-mine waste rock characterisation. The waste rock sampling program must include validation of salinity, acid and alkali producing potential and metal concentrations including antimony, arsenic, boron, cadmium, chromium, cobalt, copper, lead, molybdenum, selenium, silver, zinc and fluoride; (d) where the acid rock drainage potential/neutral mine drainage potential of waste rock material has not been conclusively determined, geochemical kinetic testing must be conducted to indicate oxidation rates, potential reaction products and effectiveness of control strategies; (e) records must be maintained of all waste rock characterisation and disposal including contingency planning for the management of acid rock/neutral mine drainage; (f) a materials balance and disposal plan demonstrating how potentially acid forming and acid forming waste rock will be selectively placed and/or encapsulated to minimise the generation of acid mine drainage; (g) a materials balance and disposal plan demonstrating how waste rock that has a potential to generate neutral and/or saline mine drainage will be selectively placed and managed to minimise the generation of neutral and/or saline mine drainage; (h) a sampling program to verify encapsulation and/or placement of potentially acid forming and acid forming waste rock and waste rock that has a potential to generate neutral mine drainage; (i) how often the performance of the plan will be assessed; (j) a rehabilitation strategy which meets the rehabilitation objectives specified in Schedule C of this environmental authority; and (k) monitoring of rehabilitation, research and/or trials to verify the requirements and methods for decommissioning and final rehabilitation of the placed materials, including the prevention and management of acid mine drainage, erosion minimisation and establishment of vegetation cover. Waste rock dumps must be constructed and maintained in accordance with the drawings identified in Table E1 (Waste Rock Dump Design Plans). Table E1 (Waste Rock Dump Design Plans) Drawing Number1 Description Figure 5a-5f Plan location of Waste Rock Dumps (WRD) with respect to other site infrastructure (author: AWA) 1 Figures referenced from the Mungana Gold Open Pit Development Environmental Management Plan (September 2011)
- E25
The waste rock dumps must be designed, constructed and maintained to prevent any water other
- E26
than incidental rainfall from entering the waste rock dump. Any seepage from waste rock dumps must be captured and directed to the processing plant, Mine Water Dam, Mungana TSF or open pit. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- E27
Only waste rock that does not cause acid, neutral or saline mine drainage may be used for the construction of temporary or permanent structures within the operation areas. PAF Waste Rock Storage (General)
- E28
The waste rock stockpile must be constructed to prevent any surface water runoff entering the stockpile.
- E29
Any seepage from the waste rock stockpile must be directly discharged to the Mine Water Dam. PAF Waste Rock Storage (Mungana underground development and King Vol)
- E30
PAF waste rock must be disposed of to the underground voids and managed in accordance with the conditions of this environmental authority. PAF Waste Rock Storage (King Vol)
- E31
PAF waste rock can only be temporarily stored on the King Vol ROM in accordance with the following requirements: a) no more than 60,000 tonnes of PAF waste rock can be stored on the King Vol ROM at any time; b) no PAF waste rock can be stored on the King Vol ROM after 1 January 2025; and c) records must be kept of the amount and storage time for PAF waste rock stored on the King Vol ROM. PAF Waste Rock Storage (Mungana Gold Open Pit Development)
- E32
PAF waste rock awaiting placement in the waste rock dump must only be stored on the ROM pad and for no longer than two (2) weeks after it was initially deposited on the ROM pad. Tyre Storage and Disposal
- E33
Tyres stored awaiting disposal or transport for take-back and recycling or waste-to-energy options must be stockpiled in volumes less than 3m in height and 200m2 and at least 10m from any other tyre storage area.
- E34
Fire prevention measures must be implemented including the removal of all combustible materials, including grass and vegetation, within a 10m radius of any tyre storage area.
- E35
Subject to demonstrating to the administering authority that no other use higher in the waste management hierarchy can be practicably implemented, waste tyres generated from the mining activity may be disposed of on site in non-acid forming waste rock dumps or underground stopes. END OF CONDITIONS FOR SCHEDULE E _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE F - NOISE General
- F1
Unless authorised by this environmental authority, noise from the mining activity must not cause environmental nuisance at any sensitive place or commercial place.
- F2
In the event of a complaint made to the administering authority (considered in the opinion of an authorised officer to be neither frivolous or vexatious) about noise generated in carrying out the licensed activity and the noise is considered by the administering authority to be an unreasonable noise, the holder of this environmental authority must take action to ensure that it will not in the future cause unreasonable noise. Noise Monitoring
- F3
Ensure that noise generated by the mining activity does not cause the criteria in Table F1 (Noise Limits) to be exceeded at any sensitive place or commercial place. Table F1 (Noise Limits) Noise Level dB(A) Monday to Saturday Sundays and Public Holidays measured as: 7am to 6pm to 10pm to 9am to 6pm to 10pm to 6pm 10pm 7am 6pm 10pm 9am LA10, adj, 10 mins BG+5 BG+5 BG+3 BG+5 BG+5 BG+0 LA1, adj, 10 mins BG+10 BG+10 BG+5 BG+10 BG+10 BG+5 Note: In the event that the measured background noise level (BG) is less than 25 dB(A), then 25 dB(A) can be substituted for the measured background level. +5
- F4
When requested by the administering authority, noise monitoring and recording must be undertaken within a timeframe nominated by the administering authority to investigate any complaint of environmental nuisance at any sensitive place or commercial place and the results must be provided to the administering authority within ten (10) business days following completion of monitoring.
- F5
Noise monitoring and recording must include the following descriptor characteristics and matters: (a) LAN,T (where N equals the statistical levels of 1, 10 and 90 and T = 15 mins); (b) Background noise LA90,; (c) The level and frequency of occurrence of impulsive or tonal noise and any adjustment and penalties to statistical levels; (d) Atmospheric conditions including temperature, relative humidity and wind speed and directions; (e) Effects due to any extraneous factors such as traffic noise; (f) Location, date and time of monitoring; (g) If the complaint concerns low frequency noise, Max LpLIN,T; and _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (h) If the complaint concerns low frequency noise, one third octave band measurements in dB(LIN) for centre frequencies in the 10 - 200 Hz range.
- F6
The method of measurement and reporting of noise levels must comply with the most recent edition of the administering authority's Noise Measurement Manual or the most recent version of AS1055 Acoustics - Description and measurement of environmental noise. Air Blast & Ground Vibration
- F7
The holder of this environmental authority must ensure that blasting does not cause the limits for peak particle velocity and air blast overpressure in Table F2 (Blasting Noise Limits) to be exceeded at any sensitive place or commercial place. Table F2 (Blasting Noise Limits) Blasting noise limits Sensitive or commercial place limits Airblast overpressure Piano, Red Dome 4 and Red Dome 5 caves1: 115 dB (Linear) Peak for nine (9) out of ten (10) consecutive blasts initiated and not greater than 120 dB (Linear) Peak at any time. Eclipse cave section of Chillagoe National Park and Mungana 21: 140dB (Linear) Peak. Ground vibration peak Piano, Red Dome 4 and Red Dome 5 caves1: particle velocity 5mm/second peak particle velocity for nine (9) out of ten (10) consecutive blasts and not greater than 10 mm/second peak particle velocity at any time. Eclipse cave section of Chillagoe National Park and Mungana 21: 25mm/second peak particle velocity. 1 Measured 10m from the entrance of nominated caves.
- F8
The holder of this environmental authority must develop and implement a blast monitoring program at the nearest sensitive place identified as locations in Table B3 (Air Quality Monitoring Sites) at least 3 months prior to any blasting taking place at the Mungana Open Pit to monitor compliance with Table F2 (Blasting Noise Limits).
- F9
Where blast monitoring detects non-compliance with Table F2 (Blasting Noise Limits): (a) take steps to ensure compliance is achieved by subsequent blasts; and (b) continue to monitor all consecutive blasts until at least three (3) successive blasts comply with Table F2 (Blasting Noise Limits).
- F10
The holder of this environmental authority must undertake vibration monitoring upon request by the administering authority to investigate any complaint (which is neither frivolous nor vexatious nor based on mistaken belief in the opinion of an authorised officer) of environmental nuisance at any sensitive place or commercial place. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- F11
The results of the investigation conducted in accordance with condition F10 must be provided to the administering authority on request.
- F12
The method of measurement and reporting of vibration levels must comply with the most recent edition of the administering authority's guideline Noise and vibration from blasting. Airblast Overpressure
- F13
If monitoring indicates exceedance of the relevant limits in Table F2 (Blasting Noise Limits) then the holder of this environmental authority must immediately implement airblast overpressure abatement measures to ensure that airblast overpressure from the activity does not result in further environmental nuisance.
- F14
When requested by the administering authority, airblast overpressure monitoring must be undertaken within a reasonable and practicable timeframe nominated by the administering authority to investigate any complaint (which is neither frivolous nor vexatious nor based on mistaken belief in the opinion of the authorised officer) of environmental nuisance at any sensitive or commercial place, and the results must be notified within ten (10) business days to the administering authority following completion of monitoring.
- F15
Airblast overpressure monitoring must include the following descriptors, characteristics and conditions:
- F16
(a) location of the blast(s) within the mining area (including which bench level);
- F17
(b) atmospheric conditions including temperature, relative humidity and wind speed and direction; and (c) location, date and time of recording. The method of measurement and reporting of airblast overpressure levels must comply with Appendix J of AS 2187.2-2006. The ground vibration transducer (or array) must be attached to a buried block so as to ensure good coupling with the ground. The mass shall be buried so that its upper most surface is at the same level as the ground surface.
- F18
The ground vibration transducer (or array) must be placed at the same point at which the air blast is monitored.
- F19
A Blast Management Plan must be developed, which (a) is prepared prior to commencement of any blasting and made available to the administering authority on request; and (b) provides for at least the following: (i) procedures for charging blasting holes. (ii) initiation and sequencing design guidelines. (iii) actions to be taken if levels of induced air over pressure or ground vibration approach the maximum permissible levels. (iv) actions to prevent environmental harm in a defined Conservation Zone. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (v) initial monitoring at designated locations including Mungana 2, Eclipse Tower (Eclipse Cave), Piano Tower (Piano Cave) and Red Dome 5 limestone karsts. Monitoring is to comprise: - up to 5 blasts are monitored over a 3 month period - all 5 locations are monitored over a 8 month period (vi) Monitoring is to be continued for each blast at any monitoring location where the peak particle velocity is expected to exceed 5 mm per second (vii) The initial monitoring sequence is to be repeated if the blast instantaneous charge is increased. END OF CONDITIONS FOR SCHEDULE F _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE G - WATER Red Dome/Mungana General
- G1
Contaminants that will, or have the potential to cause environmental harm, must not be released directly or indirectly to any waters except as permitted under the conditions of this environmental authority.
- G2
Releases to waters must be undertaken so as to minimise erosion of the bed and banks of the receiving waters, or cause a material build-up of sediment in such waters. Water Quality Monitoring Metadata
- G3
The following information must be recorded in relation to all water monitoring required under the conditions of this environmental authority and submitted to the administering authority in the specified format when requested: (a) the date and time when the sample was taken; (b) the monitoring point where the sample was taken; (c) the measured or estimated daily quantity of the contaminants released from all release points; (d) the release flow rate at the time of sampling for each release point; (e) the results of all monitoring and details of any exceedances of the conditions of this environmental authority; and (f) all water quality monitoring data. Stream Flow Monitoring
- G4
The holder of this environmental authority must establish stream cross-section and discharge data at the locations specified in Table G1 (Stream Flow Monitoring). Stream discharge data is to be reviewed by 31 August each year to adjust for changes in stream cross-section. For the purpose of Schedule G, flow events are determined in Table G4 (Contaminant Release During Flow Events) by data recorded at the relevant stations specified in Table G1 (Stream Flow Monitoring). Table G1 (Stream Flow Monitoring) Receiving Release point Gauging station Easting(GDA Northing (GDA Flow recording water description 94 MGA - 94 MGA - Frequency Zone 55) Zone 55) description Minimum of 220550 8104919 weekly or daily Welcome OCS 6: Raw Water Level Staff during discharge Creek Dam (via Opera Creek) events. Mine-affected Water Release Events
- G5
The release of mine-affected waters must only occur from the release points specified in Table G2 (Contaminant Release Points) and depicted in Schedule J - Figure 1 (Monitoring Points). _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Table G2 (Contaminant Release Points) Release points Easting Northing Contaminant Receiving waters (GDA 94 MGA - (GDA 94 MGA - source description OCS 6: Raw Water Dam Zone 55) Zone 55) Opera Creek spillway 221622 8105682 Raw Water Dam Welcome Creek Southern Waste 222083 8104132 Seepage water from Rock Dump Wetland Southern Waste Rock Dump
- G6
Unless otherwise permitted under the conditions of this environmental authority, the release of mine-
- G7
affected water to receiving waters must only take place in accordance with the criteria specified in Table
- G8
G4 (Contaminant Release During Flow Events) for the release point(s) specified in Table G2
- G9
(Contaminant Release Points). Unless otherwise permitted under the conditions of this environmental authority, the release of mine- affected water to receiving waters must not exceed the release rates and limits stated in Table G4 (Contaminant Release During Flow Events) and Table G5 (End of Pipe Release Limits) when measured at the monitoring points specified in Table G2 (Contaminant Release Point) for each quality characteristic specified in Table G5 (End of Pipe Release Limits). The holder of this environmental authority must submit to the administering authority 80th percentile reference values (>18 data points) in accordance with ANZECC 2000 methodology, specific to surface water for Welcome Creek for all parameters listed in Table G3 (Contaminant Release Monitoring), along with seasonal flow rates gathered from the gauging stations listed in Table G1 (Stream Flow Monitoring) within 12 months of recommencement of mining or processing. The release of contaminants to waters from the authorised release points must be monitored at the locations specified in Table G2 (Contaminant Release Points) for each quality characteristic and at the frequency specified in Table G3 (Contaminant Release Monitoring). Table G3 (Contaminant Release Monitoring) Quality Characteristic Unit Monitoring Frequency1,4 Routine based sampling: Physicochemical S/cm Monthly Electrical conductivity pH units pH Event based sampling of Turbidity NTU discharge: Water Hardness (CaCO3) mg/L Chlorophyll 6 g/L Major Cations & Anions Sulphate (SO42-) mg/L _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Nitrate (as N) g/L One sample must be taken within twelve (12) hours of a Ammonia (as N) g/L release event or flow event commencing. A second WAD Cyanide g/L sample must be taken between twelve (12) and Fluoride g/L twenty four (24) hours after the release event or flow Metals & Metalloids (measured as total and dissolved)2,3,5 event commences. Antimony g/L Arsenic g/L Cadmium g/L Cobalt Copper g/L Where a release or flow Lead Molybdenum g/L event has a duration of Selenium Zinc twenty four (24) hours or g/L greater, samples must be g/L taken daily for one (1) week, g/L and weekly thereafter until the release or flow event g/L ceases. Silver6 g/L Boron6 g/L Chromium6 g/L Organics Oils and greases (visual) 1 A release or flow event is a release of water from a release point as specified in Table G2 (Contaminant Release Points). 2 Grab sampling is the preferred method for sampling collection, however the use of remote sampling techniques such as automated methods is acceptable, except for the use of establishing reference data. 3 The reference data set must be based on grab samples. 4 Monitoring during discharge events will only be conducted where safe access can be gained. 5 For grab samples all metals and metalloids must be measured as total (unfiltered) and dissolved (filtered) - filtering should be conducted in the field. 6 To be monitored for 3 consecutive surface water samples to determine the need for ongoing monitoring. These parameters were elevated above average crustal abundance in geotechnical work in the EIS dated 19 November 2010. Table G4 (Contaminant Release During Flow Events) Receiving Release point Flow event Maximum release rate for Release limit water all combined release points As specified in Table G5 description (End of Pipe Release Limits) Welcome OCS 6:Raw Water Low flow1 - Low flow1 - Creek Dam (via Opera Creek) A flow event Release may occur during a period of at low flow event and for up to least four (4) days, with one 4 weeks after the natural day of at least low flow event ceases. 0.1m3/s 4 average flow. Maximum total release rate:2 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Maximum flow - Post low flow is 100L/s rate of 1m3/s 4 - No restrictions during low flow event High flow - Maximum release rate of As specified in Table G5 Minimum 2% (1:50 dilution) of river (End of Pipe Release natural river flow if water quality meets Limits) flow of more relevant standards in Table than 1m3/s 4 G5 (End of Pipe Release Limits). Maximum total release rate:2 - No restrictions during high flow event Maximum release rate of 5% (1:20 dilution) of river flow if water quality meets relevant standards in Table G5 (End of Pipe Release Limits). Maximum total release rate:2 - No restrictions during high flow event 1 Release of contaminants that meets the quality characteristics of the release limits for low flow as specified in Table G5 (End of Pipe Release Limits) may occur at any time during any high flow event in the river, with no restrictions on volumes release. 2 Maximum total release rate from all release points. 3 The downstream compliance point for each release point is specified in Table G6 (Receiving Water Reference Sites, Downstream Compliance Monitoring Points and Downstream Monitoring Points) 4 The holder of this environmental authority to provide stream flow following the first wet season after the recommencement of mining or processing.
- G10
Releases must not cause water quality to exceed the low flow release limits listed in Table G5 (End of Pipe Release Limits) when monitored at the downstream compliance points listed in Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). Table G5 (End of Pipe Release Limits) Quality Release limit for high flow3 Characteristic1 Release limit2 for Low flow 1:20 dilution (5%) 1:50 dilution (2%) Electrical Conductivity release limits release limits (S/cm) Physicochemical 6804 TBA11 TBA11 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 pH (pH units) 66 (minimum) TBA11 TBA11 7.64 (maximum) TBA11 Turbidity (NTU) 304 TBA11 TBA11 TBA11 Water Hardness For interpretation purposes TBA11 (CaCO3) (mg/L) TBA11 Sulphate (SO42-) Major Cations & Anions TBA11 (mg/L) TBA11 Nitrate5 (as N) (g/L) 5.44 TBA11 TBA11 Ammonia (as N) (g/L) TBA11 Free Cyanide(g/L) 306 or 80th percentile7 of TBA11 TBA11 WAD Cyanide(g/L) reference8, whichever is TBA11 TBA11 Fluoride(g/L) higher TBA11 TBA11 104 TBA11 TBA11 Total Antimony (g/L) 76 or 80th percentile7 of TBA11 TBA11 reference8, whichever is TBA11 TBA11 Total Arsenic9 (g/L) higher TBA11 TBA11 80th percentile7 of reference8, TBA11 Total Cadmium (g/L) whichever is higher TBA11 2124 TBA11 Total Cobalt (g/L) TBA11 Metals & Metalloids TBA11 Total Copper (g/L) 910 or 80th percentile7 of TBA11 reference8, whichever is Total Lead (g/L) higher Total Molybdenum 136 or 80th percentile7 of (g/L) reference8, whichever is Total Selenium (g/L) higher 0.26 or 80th percentile7 of reference8, whichever is higher 1.410 or 80th percentile7 of reference8, whichever is higher 1.46 or 80th percentile7 of reference8, whichever is higher 3.46 or 80th percentile7 of reference8, whichever is higher 3410 or 80th percentile7 of reference8, whichever is higher 56 or 80th percentile7 of reference8, whichever is higher Total Zinc (g/L) 134 TBA11 Organics Oils and greases No visible film _____________________________________________________________________________________________________________ Environmental authority EPML00562913 1 All metals and metalloids must be measured as dissolved (filtered) concentrations. 2 The release limits are based on default trigger limits or the 80th percentile of reference system, whichever is the higher. Where appropriate the default trigger values may be hardness adjusted in accordance with ANZECC/ARMCANZ (2000) section 7.4.4. 3 No high flow release is authorised until relevant reference data has been submitted as detailed in condition G12 and appropriate release limits have been populated in this table. 4 Site-specific trigger level calculated from pooled routine data from reference sites OMC2, WCref1, BelC01 and RH1 (>18 data points). 5 The trigger value is the value for Total Oxides of Nitrogen as there is no specific value for nitrate. 6 Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland river ecosystems Tables 3.3.4 and Table 3.4.1 (high reliability trigger values) and moderate or low reliability trigger values (Section 8.3) if no value available in Table 3.4.1. 7 80th percentiles calculated using ANZECC (2000) methodology (section 7.4.4.1). 8 Reference sites defined in Table G7 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). 9 Speciated arsenic concentrations for As (III) and As (V) only required if 13 g/L is exceeded - note that the sample bottle requirements for As (total species) and As (speciated) may differ. 10 Interim (low reliability) value from ANZECC (2000) Section 8.3.7.1. 11 To be updated when the holder of this environmental authority provide sufficient reference data for Welcome Creek. Annual Review of Release Limits
- G11
By 1 July each year the holder of this environmental authority must provide the administering authority an update of monitoring data and associated contaminant limits specified in Schedule G of this environmental authority, incorporating monitoring data obtained during the previous twelve (12) months. Receiving Waters Monitoring
- G12
If a release of mine-affected waters cause an exceedance of the low flow release limits listed in Table G5 (End of Pipe Release Limits) when monitored at the downstream compliance points listed in Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points), the holder of this environmental authority must compare the downstream results to the reference site results and: (a) where the trigger values, identified as the low flow release limits listed in Table G5 (End of Pipe Release Limits) are not exceeded then no action is to be taken; or (b) where the downstream results exceed low flow release limits listed in Table G5 (End of Pipe Release Limits) for any quality characteristic, compare the results of the downstream site to the data from background monitoring sites and; (i) if the downstream result is less than the background monitoring site data, then no action is to be taken; (ii) if the result is greater than the background monitoring site data, complete an investigation into the potential for environmental harm and provide a written report to the administering authority within 3 months, outlining: i. details of the investigations carried out; ii. details of the environmental impacts observed; and iii. actions taken to prevent environmental harm. Note: Where an exceedance of a release limit has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal- to or lesser extent for that quality characteristic. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- G13
An estimate of the daily quantity of contaminants released from each release point must be based on available measured data recorded at the monitoring points in Table G2 (Contaminant Release Points).
- G14
The holder of this environmental authority must monitor the quality of the receiving waters as specified in Table G6 (Receiving Water Reference Sites and Downstream Compliance Monitoring Points) and shown in Schedule J - Figure 1 (Monitoring Points) for each quality characteristic and at the frequency stated in Table G3 (Contaminant Release Monitoring). Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points) Monitoring Points Receiving Waters Location Easting (GDA 94 MGA Northing (GDA 94 Description - Zone 55) MGA - Zone 55) Reference1 Monitoring Points WCref1 Welcome Creek 220 618 8 104 755 OMC2 One Mile Creek 220 700 8 107 924 RH12 218 749 8 108 381 Welcome Creek (Tributary of 224 772 8 108 150 BelC012 Welcome Creek at Red Hill, west 223 311 8 105 879 LJref (sediment of the leases) sampling only) Belgravia Creek (in the Red Cap catchment approximately 50m downstream of the Cathedral Caves, north of the leases) Lady Jane Creek (upstream of mining disturbance) Downstream Compliance Monitoring Points WCS 2 Opera Creek (100m downstream 221 493 8 105 587 of the Raw Water Dam Spillway) WCS 3 Welcome Creek (50m 220 468 8 105 058 downstream of the confluence with Opera Creek) LC7 Lily Creek (350m downstream 225 292 8 104 120 from the Red Dome TSF spillway) Site 9 Welcome Creek (downstream of 220 550 8 104 919 the Mungana TSF spillway) OMC42 One Mile Creek (downstream of 220 165 8 106 806 from the Mungana WRD) _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Site 10 Welcome Creek 1.5km upstream 221 540 8 104 257 from site 9 (downstream from the Mungana TSF) 1 Reference sites must: (a) be from the same bio-geographic and climatic region; (b) have similar geology, soil types and topography; (c) contain a range of habitats similar to those at the test sites; (d) have a similar flow regime; and (e) not be so close to the test sites that any disturbance at the test site also results in a change at the reference site. 2 Monitoring is required to commence at these sites prior to commencement of development of the Mungana Gold Open Pit Development. Stream Sediment
- G15
Sediment quality of receiving waters and reference waters must be monitored at the locations defined in Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring points) and identified on Schedule J - Figure 1 (Monitoring Points) and for the parameters defined in Table G7 (Stream Sediment Trigger and Contaminant Levels).
- G16
If the quality characteristics of sediments exceed any of the trigger levels specified in Table G7 (Stream Sediment Trigger and Contaminant Levels), the holder of this environmental authority must compare the downstream site to the data from reference monitoring sites and: (a) if the level of contaminants at the downstream site does not exceed the reference monitoring site data, then no action is to be taken; or (b) if the level of contaminants at the downstream site is greater than the reference monitoring site data, complete an investigation in accordance with the ANZECC and ARMCANZ 2000 methodology, into the potential for environmental harm and provide a written report to the administering authority within three (3) months, outlining: (i) details of the investigations carried out; (ii) details of the environmental impacts observed; and (iii) actions taken to prevent environmental harm.
- G17
Note: Where an exceedance of a release limit has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal- to or lesser extent for that quality characteristic. All stream sediment sampling must be undertaken in accordance with the most recent version of Australian Standard AS 5667.12 Guidance on Sampling of Bottom Sediments.
- G18
The sediment quality contaminant limit specified in Table G7 (Stream Sediment and Contaminant Levels) must not be exceeded at the downstream sediment quality compliance points identified in Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). Table G7 (Stream Sediment Trigger and Contaminant Levels) Parameter1 Unit Trigger Level Contaminant Limit Monitoring frequency Fluoride mg/kg Reference value2 3 times the reference2 value _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Parameter1 Unit Trigger Level Contaminant Limit Monitoring frequency Total mg/kg Reference value2 3 times the reference2 value Cyanide Twice a year (Once Antimony mg/kg 23 or reference value2, 254 or 3 times the reference2, at the end of the mg/kg whichever is higher whichever is higher wet season, and Arsenic mg/kg 704 or 3 times the reference2, once at the end of mg/kg 203 or reference value2, whichever is higher the dry season) Cadmium mg/kg whichever is higher 104 or 3 times the reference2, Cobalt mg/kg whichever is higher Copper 1.53 or reference value2, 3 times the reference2 value whichever is higher 2704 or 3 times the reference2, Lead whichever is higher Molybdenum Reference value2 2204 or 3 times the reference2, whichever is higher 653 or reference value2, whichever is higher 3 times the reference2 value 503 or reference value2, whichever is higher mg/kg Reference value2 Selenium mg/kg Reference value2 3 times the reference2 value Zinc mg/kg 2003 or reference value2, 4104 or 3 times the reference2, whichever is higher whichever is higher Particle size For interpretation purposes distribution 1 All samples must be sieved to the sand fraction (63 - 2000-m) prior to analysis. 2 Reference sites are defined in Table G6 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points) 3 ANZECC/ARMCANZ (2000) Interim Sediment Quality Guidelines (ISQG) - low values based on total concentrations in sediments 4 ANZECC/ARMCANZ (2000) ISQG - high values based on total concentrations in sediments Receiving Environment Monitoring Program (REMP)
- G19
A Receiving Environment Monitoring Program (REMP) must be developed and implemented by 31 June 2017.
- G20
The REMP will monitor, identify and describe any adverse impacts to surface water environmental values, quality and flows due to the authorised mining activity. This must include monitoring the effects of the mine on the receiving environment periodically (under natural flow conditions) and while mine affected water is being discharged from the site.
- G21
Note: For the purposes of the REMP, the receiving environment is the waters and connected waterways of Welcome Creek, One Mile Creek, Lily Creek and connected waterways within 2 kilometres downstream of the release. A REMP Design Document that addresses the requirements of the REMP must be prepared and made available to the administering authority upon request. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- G22
A report outlining the findings of the REMP, including all monitoring results and interpretations must be
- G23
prepared annually and made available on request to the administering authority. This must include an assessment of background reference water quality, the condition of downstream water quality compared against water quality objectives, and the suitability of current discharge limits to protect downstream environmental values. Until the REMP as required by condition G19 is developed and implemented, the current REMP prevails. Water Management Plan
- G24
A Water Management Plan must be developed by an appropriately qualified person and implemented. Erosion and Sediment Control
- G25
Prior to commencement of mining or processing, an Erosion and Sediment Control Plan must be developed by an appropriately qualified person and implemented for all stages of the mining activity on the licensed place to prevent or minimise erosion and the release of sediment to receiving waters and the contamination of storm water.
- G26
Until the Erosion and Sediment Control Plan as required by condition G25 is developed and implemented, the current Erosion and Sediment Control Plan prevails. Groundwater Monitoring Bore Construction, Maintenance and Decommissioning
- G27
Groundwater monitoring bores must be constructed, maintained and decommissioned in accordance with methods prescribed in the latest edition of the Agriculture and Resource Management Council of Australia and New Zealand manual titled Minimum Construction Requirements for Water Bores in Australia.
- G28
Oil-based drilling fluids, oil-based additives, synthetic based drilling fluids or synthetic based additives must not be used in the construction of groundwater monitoring bores.
- G29
Remedial measures must be taken immediately if the holder of this environmental authority becomes aware that either monitoring bore construction, maintenance or decommissioning have resulted in a change in groundwater quality, groundwater levels or have caused the interconnection of aquifers.
- G30
If the quality characteristics as measured in the compliance bores listed in Table G8 (Groundwater monitoring locations and frequency) exceed any of the trigger levels specified in Table G9 (Groundwater trigger levels and Contaminant Limits), the holder of this environmental authority must compare the results from the compliance bores to the data from the reference bores and: (a) if the level of contaminants as measured in the compliance bore does not exceed the reference bore results, then no action is to be taken; (b) if the level of contaminants at the compliance bore is greater than the reference bore results, complete an investigation in accordance with the ANZECC & ARMCANZ 2000, into the potential for environmental harm and provide a written report to the administering authority within three (3) months, outlining: i. details of the investigations carried out; ii. details of environmental impacts observed, and _____________________________________________________________________________________________________________ Environmental authority EPML00562913 iii. actions taken to prevent environmental harm. Note: Where an exceedance of a release limit has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal-to or lesser extent for that quality characteristic. Table G8 (Groundwater monitoring locations and frequency) Easting Northing Monitoring point (GDA 94 (GDA 94 Surface Monitoring frequency MGA - Zone MGA - Zone RL (m) 3 55) 55) Reference Bores WB14: 221 536 8 107 969 Quarterly - water quality 324.6 Located north of Mungana, off the mine lease. Potable water source. Monthly - Levels TBA4 TBA3 TBA3 Quarterly - water quality TBA3 Monthly - Levels Compliance Bores OB53: 222915 8106174 328.3 Monthly - Levels NP Monitoring bore near National Park Boundary TD17r 224754 8103619 Quarterly - water quality Monthly - levels OC6: 222569 8105289 Quarterly - water quality Opera Creek 313.4 Monthly - levels WB6: 223924 8105764 Quarterly - water quality 346.3 Pit inflows. Located between Red Dome Pit and the National Park Monthly - levels boundary. New Bore: TBA3 TBA3 Quarterly - water quality TBA3 NP monitoring bore located between OB53 and the Mungana Monthly - levels Pit Monitoring Bores TD4: 225624 8103769 Quarterly - water quality 331.4 Red Dome TSF eastern saddle dam. Located north-west of the Monthly - levels TSF, outside of the fence. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 TD8: 225732 8103676 Quarterly - water quality 330.3 Red Dome TSF eastern saddle dam. Located downslope of TD4. Monthly - levels HL1: 224254 8104092 Quarterly - water quality 354.3 Red Dome heap leach area. Located at the beginning of the Monthly - levels heap leach launders. SP1: 223431 8104506 Quarterly - water quality 335.1 Red Dome process ponds. Located downslope of the storm pond. Monthly - levels 924: 221520 8107246 Quarterly - water quality Mungana decline area. 345.6 Monthly - levels 925: 221794 8107088 Quarterly - water quality 331.9 Mungana decline area. Located adjacent to access road. Monthly - levels 926: 221654 8107156 359.2 Monthly - levels. North of Mungana decline. 928: 221610 8107398 Quarterly - water quality North of Mungana Decline area. 340.5 Monthly - levels 929: 221312 8107408 349.6 Monthly - levels. Mungana decline area. WB999: 221791 8107140 337.8 Monthly - levels. Mungana decline area. 1 Reference sites must: (a) be from the same bio-geographic and climatic region; (b) have similar geology, soil types, topography and flow regime; and (c) not be so close to the test sites that any disturbance at the test site also results in a change at the reference site. 2 RL measurement to be taken from top of bore casing to the nearest 5cm. 3 Detail to be provided to the administering authority prior to commencement of mining or processing.
- G31
Groundwater from Compliance Bores identified in Table G8 (Groundwater monitoring locations and frequency), must not exceed any of the contaminant limits defined in Table G9 (Groundwater trigger levels and Contaminant Limits). Table G9 (Groundwater Trigger Levels and Contaminant Limits) Quality Contaminant trigger level7 Contaminant limit characteristic1 Electrical conductivity 4358 or 80th percentile5 of reference3, 10009 or 95th percentile5 of (S/cm) whichever is higher. reference3, whichever is higher. TD17r: 149312 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Quality Contaminant trigger level7 Contaminant limit characteristic1 pH (pH units) Minimum: 5 (minimum) 6.02 or 20th percentile5 of reference3, 99 (maximum) whichever is the lower Maximum: 7.52 or 80th percentile5 of reference3, whichever is the higher. OC6: 8.412 TD17r: 7.9712 Water hardness Interpretation purposes only (CaCO3) (mg/L) Sulphate (SO42-) 80th percentile5 of reference3 50010 or 95th percentile5 of (mg/L) reference3, whichever is higher. Nitrate (as N) (g/L) 80th percentile5 of reference3 or 302, 1100011 or 95th percentile5 whichever is higher of reference3, whichever is Ammonia (as N) (g/L) 80th percentile5 of reference3 or 62, whichever higher. is higher TD17r: 247009 Free Cyanide (g/L) 80th percentile5 of reference3 or 72, whichever WAD Cyanide (g/L) is higher 50014 or 95th percentile5 of 80th percentile5 of reference3 reference3, whichever is Fluoride (g/L) Antimony (g/L) 80th percentile5 of reference3 higher. Arsenic (g/L) 80th percentile5 of reference3 or 912, 2215 or 95th percentile5 of Cadmium (g/L) whichever is higher reference3 80th percentile5 of reference3 or 132,13, 50015 or 95th percentile5 of whichever is higher reference3 80th percentile5 of reference3 or 0.22, 150010 or 95th percentile5 whichever is higher of reference3, whichever is higher. 3010 or 95th percentile5 of reference3, whichever is higher. 7010 or 95th percentile5 of reference3, whichever is higher. 106 or 95th percentile5 of reference3, whichever is higher. OC6, WB6: 214 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Quality Contaminant trigger level7 Contaminant limit characteristic1 Cobalt (g/L) 80th percentile5 of reference3 or 1.412, 10006 or 95th percentile5 of whichever is higher reference3, whichever is higher. Copper (g/L) 80th percentile5 of reference3 or 1.42, 10006 or 95th percentile5 of whichever is higher reference3, whichever is higher. TD17r: 10811 Lead (g/L) 80th percentile5 of reference3 or 3.42, 1006 or 95th percentile5 of whichever is higher reference3, whichever is higher. Molybdenum (g/L) 80th percentile5 of reference3 or 3412, 5014 or 95th percentile5 of whichever is higher reference3, whichever is higher. Selenium (g/L) 80th percentile5 of reference3 or 112, 206 or 95th percentile5 of whichever is higher reference3, whichever is higher. Zinc (g/L) 80th percentile5 of reference3 or 82, whichever 200006 or 95th percentile5 is higher of reference3, whichever is higher. 1 All metals and metalloids must be measured as dissolved (filtered). 2 Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland river ecosystems Tables 3.3.4 and Table 3.4.1 (high reliability trigger values) and moderate or low reliability trigger values (Section 8.3) if no value available in Table 3.4.1. 3 Reference sites as specified in Table G8 (Groundwater monitoring locations and frequency). 4 For aquatic ecosystem protection, based on QWQG 2009, Table G.4, Gulf zone. 5 80th and 95th percentiles are calculated using ANZECC 2000 methodology. 6 For protection of livestock drinking water, based on ANZECC 2000 7 Contaminant trigger values may be adjusted for water hardness (30mg/L calcium carbonate) in accordance with Table 3.4.3 of ANZECC. The hardness modified trigger values (HMTV) will be compared with the contaminant trigger values specified in Table G9 and if the monitoring result exceeds the HMTV it will then constitute an exceedance of the trigger values specified in Table G9. An investigation will then be required under condition G30 of this environmental authority. 8 Based on DERM information resulting from the review of water quality in the Fitzroy Basin. 9 Maximum value recorded in bore TD17r. 10 Contaminant Limit based on NHMRC (2006) Recreational Water Guidelines (10 x ADWG (assumed use swimming)). 11 80th percentile of historical (pre impact) data for this bore. This figure may be updated if monitoring indicates that no impacts are occurring (i.e. the pre impact data set increases) or if additional historical data is identified. 12 Interim (low reliability) value from ANZECC (2000) Section 8.3.7.1. 13 Speciated arsenic concentrations can be included for analysis from the outset, or alternatively, an arsenic (total species) sample can be determined with analysis for As (III) and As (V) only required if 13 g/L is exceeded - note that the sample bottle requirements for As (total species) and As (speciated) may differ. 14 Contaminant limit based on drinking water quality guidelines in ADWG (2011). 15 Based on Implementation Guidance for the International Cyanide Management Code, International Cyanide Management Institute, Standard Practice 4.5. Mungana TSF groundwater monitoring
- G32
Groundwater quality and standing water level must be monitored: _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (a) at the locations specified in Table G10 - Groundwater monitoring locations and frequency; and (b) at the frequencies specified in Table G10 - Groundwater monitoring locations and frequency; and (c) for the quality characteristics identified in Table G11 - Groundwater contaminant limits for the aquifer in which the bore is located.
- G33
Groundwater in any compliance bore specified in Table G10 - Groundwater monitoring locations and frequency must not exceed the corresponding limit A specified in Table G11 - Groundwater contaminant limits on any five (5) consecutive sampling occasions.
- G34
Groundwater in any compliance bore specified in Table G10 - Groundwater monitoring locations and frequency must not exceed the corresponding limit B specified in Table G11 - Groundwater contaminant limits on any three (3) consecutive sampling occasions. Note: Consecutive sampling occasions means any number of sampling results obtained sequentially regardless of frequency and includes resampling events as required by Condition G35. Table G10 - Groundwater monitoring locations and frequency Location Bore Details Monitoring Frequency (GDA94, Zone 55k) Monitoring Point Total Depth to Screened Depth interval RL Latitude Longitude Surface Standing Groundwater (m) RL (m)[1] (m) Water Level Quality Dargalong Metamorphics Compliance bores GWMTD1: 221456 8104490 32.0 297.2 13.0-32.0 Monthly Quarterly Mungana TSF. Monitoring bore approximately 50m down gradient of the Mungana TSF wall. GWMTD2: 221253 8104445 34.0 295.2 14.4-32.5 Monthly Quarterly Mungana TSF. Monitoring bore approximately 250m down gradient of the Mungana TSF wall. 1 RL must be measured to the nearest 5cm. Table G11 - Groundwater contaminant limits Quality Characteristic Unit Limits Limit Type1 A B Interpretation purposes only Interpretation purposes only GW MTD01 Water hardness (mg/L) NA NA (CaCO3) Major anions and (mg/L) NA NA cations _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Quality Characteristic Unit Limits Limit Type1 pH pH Units A B Range (field) Limit A: 20th percentile to 80th percentile 6.92 - 7.32 6.86 - 7.70 Limit B: 5th percentile to 95th percentile Electrical Conductivity (-S/cm) 1,335 1,418 Maximum Limit A: 80th percentile Sulphate (mg/L) 99 120 Limit B: 95th percentile Fluoride (-g/L) 1,300 1,400 Maximum NA Limit A: 80th percentile Nitrate (as N) (-g/L) 7,200 NA Limit B: 95th percentile Ammonia (as N) (-g/L) 900 NA (-g/L) NA Maximum Cyanide Free (-g/L) 7 NA Limit A: 80th percentile Cyanide WAD 500 NA Limit B: 95th percentile (-g/L) NA Antimony (-g/L) 9 NA Maximum Arsenic (-g/L) 13 NA Limit A: Guideline2 Cadmium (-g/L) NA (-g/L) 0.2 NA Maximum Cobalt (-g/L) 1.4 NA Limit A: Guideline2 Copper (-g/L) 1.4 (-g/L) 3.4 NA Maximum Lead (-g/L) 34 GW MTD02 Limit A: Guideline2 Molybdenum 5 NA (mg/L) 31 NA Maximum Selenium (mg/L) Limit A: Guideline3 Zinc NA Maximum (dissolved) NA Limit A: Guideline2 Water hardness Maximum (dissolved) (CaCO3) pH Units 7.02 - 7.52 6.97 - 7.83 Limit A: Guideline2, 4 Maximum (dissolved) Major anions and Limit A: Guideline2 cations Maximum (dissolved) pH Limit A: Guideline2 Maximum (dissolved) Electrical Conductivity (-S/cm) 1,400 1,504 Limit A: Guideline2 Maximum (dissolved) Sulphate (mg/L) 132 206 Limit A: Guideline2 (-g/L) Maximum (dissolved) Fluoride 2,400 2,600 Limit A: Guideline2 Nitrate (as N) (-g/L) 7,200 NA Maximum (dissolved) Ammonia (as N) (-g/L) 900 NA Limit A: Guideline2 Maximum (dissolved) Limit A: Guideline2 Interpretation purposes only Interpretation purposes only Range (field) Limit A: 20th percentile to 80th percentile Limit B: 5th percentile to 95th percentile Maximum Limit A: 80th percentile Limit B: 95th percentile Maximum Limit A: 80th percentile Limit B: 95th percentile Maximum Limit A: 80th percentile Limit B: 95th percentile Maximum Limit A: Guideline2 Maximum _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Quality Characteristic Unit Limits Limit Type1 Cyanide Free (-g/L) A B Limit A: Guideline2 Cyanide WAD (-g/L) (-g/L) 7 NA Maximum Antimony (-g/L) Limit A: Guideline2 Arsenic (-g/L) 500 NA Cadmium (-g/L) Maximum Cobalt (-g/L) 9 NA Limit A: Guideline3 Copper (-g/L) 13 NA Maximum (dissolved) Lead Limit A: Guideline2 0.2 NA Maximum (dissolved) 1.4 NA Limit A: Guideline2,4 1.4 NA Maximum (dissolved) Limit A: Guideline2 3.4 NA Maximum (dissolved) Molybdenum (-g/L) 11 12 Limit A: Guideline2 Selenium (-g/L) 5 NA Maximum (dissolved) Limit A: Guideline2 Zinc (-g/L) 31 NA Maximum (dissolved) Limit A: Guideline2 Maximum (dissolved) Limit A: 80th percentile Limit B: 95th percentile Maximum (dissolved) Limit A: Guideline2 Maximum (dissolved) Limit A: Guideline2 1 Limits are derived from control data. 2 Extracted from Table 3.4.1 of the Australian and New Zealand guidelines for fresh and marine water quality (ANZECC & ARMCANZ 2000), trigger values for toxicants for typical slightly-to-moderately disturbed freshwater environments. The 80% species protection value is applied for zinc, as the site specific data is frequently in excess of the 95% species protection value. Molybdenum, cobalt and antimony are freshwater low reliability trigger values extracted from section 8.3.7 Detailed descriptions of chemicals. Nitrate (as N) toxicity value for the protection of 95% freshwater species is based on the revised calculation by Chris Hickey (National Institute of Water & Atmospheric Research Ltd, memorandum dated 30 September 2002). 3 Based on Implementation Guideline for the International Cyanide Management Code, International Cyanide Management Institute, Standard Practice 4.5. 4 Speciated arsenic concentrations can be included for analysis from the outset or alternatively, an arsenic (total species) sample can be determined with analysis for As(III) and As(V) only if required if 13 -g/L is exceeded - note that the sample bottle requirements for As (total species and As (speciated) may differ.
- G35
If groundwater measured at any compliance bore specified in Table G10 - Groundwater monitoring locations and frequency exceeds the corresponding limit B specified in Table G11 - Groundwater contaminant limits on one (1) sampling occasion the environmental authority holder must resample the groundwater within the compliance bore for all exceeding parameters within 10 business days of receipt of results. Annual Groundwater Monitoring Report
- G36
The holder of this environmental authority must complete an annual groundwater monitoring report by 1 July each year and submit this report to the administering authority upon request. The report must be prepared by an appropriately qualified person and must address the following requirements as a minimum: (a) analyses of groundwater chemistry and hydrogeological data for all groundwater monitoring bores required in condition G30 and G32; (b) identify exceedance of any contaminant trigger levels or limits listed in Table G9 (Groundwater Trigger Levels and Contaminant Limits) and in Table G11 (Groundwater contaminant limits); _____________________________________________________________________________________________________________ Environmental authority EPML00562913 (c) discuss effectiveness of the current groundwater monitoring regime and any improvements that could be made to ensure early detection of impacts to groundwater; (d) detail proposed actions and timeframes to undertake further investigation of potential environmental impacts for any exceedance identified; (e) detail proposed mitigation measures for any detected impact to groundwater resulting from the mining activity; (f) changes in groundwater levels plotted as a function of time to identify seasonal patterns and possible draw-down effects; (g) groundwater elevation contours and flow direction; and (h) interpretation and discussion of exceedance of any contaminant trigger levels or limits listed in Table G9 (Groundwater Trigger Levels and Contaminant Limits) and in Table G11 (Groundwater contaminant limits) and the implications for compliance with this environmental authority.
- G37
The method of sampling of groundwater must comply with that set out in the latest edition of the Administering Authority's Water Quality Sampling Manual. Raw Water Dam
- G38
The water quality in the raw water dam must be managed to ensure that the water quality in the dam is maintained or improved. Discharges from the licensed activity into the raw water dam are only permitted if the water quality of the discharged is equal to or better than the water quality in the raw water dam. Onsite Water Storages
- G39
Waters onsite must be monitored at the locations defined in Table G12 (Onsite Water locations and water storage monitoring locations) for parameters in Table G13 (Onsite Water limits) and at a frequency of: For the routine monitoring of onsite water locations: Quarterly Red Dome Pit annually Table G12 (Onsite Water locations and water storage monitoring locations) Monitoring Point Easting Northing (GDA 94 MGA - (GDA 94 MGA - E6A: Opera Creek. 100 metres downstream of Zone 55) Zone 55) the Red Dome Sediment Dam 223383 8104488 OCS 6: 221622 8105682 Raw Water Dam at the spillway 223477 8104472 Red Dome Sediment Dam: _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Sediment Dam (located downstream of 222020 8106145 the heap leach pads, pregnant pond and 221930 8104960 221749 8104781 barren pond). 221569 8106449 221531 8106239 Mine Water Dam: 223840 8105462 Dam that receives water from Mungana Decline. Mungana TSF: Tailings Storage. Mungana TSF Seepage Sump: Downstream of Mungana TSF West wall. Mungana Process Water pond: Plant Process water. Mungana Plant Site Sediment Dam: Downstream of the Mungana process and concentrate storage area and the Process Water Pond Red Dome Pit
- G40
In the event that waters defined in Table G12 (Onsite Water locations and water storage monitoring locations) exceed the contaminant limits defined in Table G13 (Onsite Water Limits), the holder of this environmental authority must implement measures to prevent access to waters by all livestock and minimise access by native fauna. Table G13 (Onsite water limits) Parameter Unit Test Value Contaminant Limit pH pH unit Range Greater than 45, less than 95 EC -S/cm Maximum 59701 Sulphate mg/L Maximum 10001 Fluoride -g/L Maximum 20001 Nitrate -g/L as N Maximum 900001 Ammonia -g/L as N Maximum 5003 WAD Cyanide -g/L Maximum Mungana TSF: refer to conditions D37 - D38 Antimony2 -g/L Maximum All other dams: 506 304 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Parameter Unit Test Value Contaminant Limit Arsenic2 -g/L Maximum 5001 Cadmium2 -g/L Maximum 101 Cobalt2 -g/L Maximum 10001 Copper2 -g/L Maximum 10001 Lead2 -g/L Maximum 1001 Molybdenum2 -g/L Maximum 1501 Zinc2 -g/L Maximum 200001 Selenium2 -g/L Maximum 201 1 Contaminant limit based on the stock water quality guidelines in ANZECC (2000). 2 Concentrations are for total metals concentrations only, not soluble metals. 3 Due to unavailability of stock water quality limit a contaminant limit based on drinking water quality guidelines in ADWG (2004) is used. 4 Due to unavailability of stock water quality limit a contaminant limit based on NHMRC (2006) Recreational Water Guidelines (10 x ADWG (assumed use swimming)) is used. 5 Page 4.2-15 of ANZECC (2000) "Soil and animal health will not generally be affected by water with pH in the range of 4-9". 6 Based on Implementation Guidance for the International Cyanide Management Code, International Cyanide Management Institute, Standard Practice 4.5. Mungana Caves National Park Aquifers - Spring Tower Complex
- G41
During construction of the Mungana Open Pit, aquifers associated with the Spring Tower Complex are not permitted to be intersected. In the event of the intersection of an aquifer reasonably expected to be part of the Spring Tower Complex, the administering authority must be notified in accordance with condition A13 of this environmental authority. Saline, Acid and Metalliferous Drainage
- G42
The holder of this environmental authority must ensure proper and effective measures are taken to avoid or otherwise minimise the generation and/or release of saline, acid and/or metalliferous mine drainage as a result of the mining activity.
- G43
By 1 September 2018, the environmental authority holder must submit an amendment application under section 224 of the Environmental Protection Act 1994 to the administering authority proposing contaminant limits in accordance with Table G11 (Groundwater contaminant limits) for all groundwater water quality monitoring bores specified in Table G8 (Groundwater monitoring locations and frequency). Applicability of conditions
- G44
Conditions G1 - G43 are only applicable to Red Dome/Mungana. King Vol
- G45
Contaminants that will, or have the potential to cause environmental harm, must not be released directly or indirectly to any receiving waters except as permitted under the conditions of this environmental authority. _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- G46
The environmental authority holder must ensure that the mining activities are conducted in a manner that protects all environmental values of receiving waters. Water Quality Monitoring Metadata
- G47
The following information must be recorded in relation to all water monitoring required under the conditions of this environmental authority and submitted to the administering authority in the specified format when requested: (a) the date and time when the sample was taken; (b) the monitoring point where the sample was taken; (c) the measured or estimated daily quantity of the contaminated water released from all release points; (d) the release flow rate at the time of sampling for each release point; (e) the results of all monitoring and details of any exceedances of the conditions of this environmental authority; and (f) all water quality monitoring data. Stream Flow Monitoring
- G48
The holder must ensure stream flow gauging stations are installed, operated and maintained to determine and record stream flows at the locations and flow recording frequency specified in Table G14 (Stream Flow Monitoring). Table G14 (Stream Flow Monitoring) Receiving Release points Gauging station Easting(GDA Northing (GDA Flow recording water description 94 MGA - 94 MGA - Frequency1 Zone 55) Zone 55) description Bowler Creek King Vol Clean Water Level staff 208212 8125827 Dam Bowler Creek King Vol Mine Water Level staff 205521 8125980 Minimum of daily tributary Dam during the (western release of boundary) contaminants Archies Creek (adjacent to King Vol Sediment Level staff 207175 8126504 Burke Dam Development Road) 1 Flow recording frequency must be sufficient to determine compliance with condition G50. Contaminated Water Release Events
- G49
The release of contaminants to waters must only occur from the release points specified in Table G15 (Contaminant Release Points).
- G50
The release of contaminants to waters must not exceed any quality characteristic release limit specified in Table G16 (Release Limits). _____________________________________________________________________________________________________________ Environmental authority EPML00562913
- G51
The environmental authority holder must ensure that the release of contaminants to waters is monitored in accordance with the requirements specified in Table G16 (Release Limits).
- G52
During contaminant release to waters, the environmental authority holder must ensure that: a) For a release at a dilution factor of <1:20, there is natural flow in the relevant receiving waters immediately upstream of the release point for the duration of the release event; or b) For a release at a dilution factor of 1:20-1:50, the flow rate in the relevant receiving waters immediately upstream of the release point is at least twenty (20) times the release rate; or c) For a dilution factor of >1:50, the flow rate in the relevant receiving waters immediately upstream of the release point is at least fifty (50) times the release rate. Table G15 (Contaminant Release Points) Release points Easting Northing Contaminant Receiving waters (GDA 94 MGA - (GDA 94 MGA - source description Zone 55) Zone 55) Mine dewatering via Bowler Creek 8125230 production bores tributary (western King Vol Clean Water 206239 Dam Spillway 8126026 Mine dewatering via boundary) the decline, King Vol Mine Water 205757 8125721 Bowler Creek Dam Spillway production bores tributary (western 8125200 and Sediment Dam King Vol Sediment 207403 boundary) Dam Surface infrastructure ROM Bowler Creek Bowler Creek Pipeline 208090 pad and waste rock tributary (adjacent to Burke Development dump and mine dewatering via Road) decline Bowler Creek Clean Water Dam Table G16 (Release Limits) _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Release limits 2, 10, 11 Monitoring Quality Dilution factor Dilution factor of Dilution factor of Characteristic1 of <1:20 >1:50 1:20 - 1:50 Electrical Conductivity 1,0003 Event based sampling: (S/cm) pH (pH units) 6.04 (minimum) One sample must be taken 8.58 (maximum) within twelve (12) hours of a Turbidity (NTU) release event or flow event Water Hardness 159 commencing. A second (CaCO3) (mg/L) sample must be taken For interpretation purposes between twelve (12) and twenty four (24) hours after the release event or flow event commences. Sulphate (SO42-) 2508 Where a release or flow (mg/L) 11.58, 12 event has a duration of 4118, 12 twenty four (24) hours or Nitrate4 (as N) greater, samples must be (mg/L) taken daily for one (1) week, and weekly thereafter until Ammonia (as N) the release or flow event (g/L) ceases. Fluoride(g/L) 1,50014 Antimony (g/L) 95th percentile5 Maximum of 10 Maximum of of reference6 times the 95th twenty five (25) (dissolved) percentile5 of times the 95th reference6 percentile5 of Arsenic8 (g/L) 5007 (total); (dissolved) reference6 and, 95th (dissolved) percentile5 of 5007 (total); and, 5007 (total); and, reference6 maximum of ten maximum of (dissolved) (10) times the 95th twenty five (25) percentile5 of times the 95th Cadmium (g/L) 28 (total); and, reference6 percentile5 of 95th percentile5 (dissolved) reference6 of reference6 (dissolved) (dissolved) 28 (total); and, 28 (total); and, maximum of ten maximum of (10) times the 95th twenty five (25) percentile5 of times the 95th reference6 percentile5 of (dissolved) reference6 (dissolved) _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Cobalt (g/L) 1,0007 (total); 1,0007 (total); 1,0007 (total); and, and, 95th and, maximum of maximum of percentile5 of ten (10) times the twenty five (25) reference6 95th percentile5 of times the 95th (dissolved) reference6 percentile5 of (dissolved) reference6 (dissolved) Copper (g/L) 1,0007 (total); 1,0007 (total); 1,0007 (total); and, and, 95th and, maximum of maximum of percentile5 of ten (10) times the twenty five (25) reference6 95th percentile5 of times the 95th (dissolved) reference6 percentile5 of (dissolved) reference6 (dissolved) Lead (g/L) 108 (total); and, 108 (total); and, 108 (total); and, 95th percentile5 maximum of ten maximum of of reference6 (10) times the 95th twenty five (25) (dissolved) percentile5 of times the 95th reference6 percentile5 of (dissolved) reference6 (dissolved) Molybdenum 508 (total); and, 508 (total); and, 508 (total); and, (g/L) 95th percentile5 maximum of ten maximum of of reference6 (10) times the 95th twenty five (25) (dissolved) percentile5 of times the 95th reference6 percentile5 of (dissolved) reference6 (dissolved) Selenium (g/L) 108 (total); and, 108 (total); and, 108 (total); and, 95th percentile5 maximum of ten maximum of of reference6 (10) times the 95th twenty five (25) (dissolved) percentile5 of times the 95th reference6 percentile5 of (dissolved) reference6 (dissolved) Zinc (g/L) 3,0008 (total); 3,0008 (total); and, 3,0008 (total); and, and, 95th maximum of ten maximum of percentile5 of (10) times the 95th twenty five (25) reference6 percentile5 of times the 95th (dissolved) reference6 percentile5 of (dissolved) reference6 (dissolved) Oils and greases No visible film 1. For water quality, all metals and metalloids must be measured as both `total' (from analysis of an unfiltered sample) and `dissolved' (from analysis of a field filtered sample). The relevant method is specified in brackets for each contaminant where applicable. 2. The release limits are based on default trigger limits or the 95th percentile of reference system, whichever is the higher. Where appropriate the default trigger values may be hardness adjusted in accordance with ANZECC/ARMCANZ (2000) section 7.4.4. 3. "Response of stream macroinvertebrates to changes in salinity and the development of a salinity index", Horrigan et al (2005), Marine and Freshwater Research. 4. Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland river ecosystems Tables 3.3.4 and Table 3.4.1 (high reliability trigger values) and moderate or low reliability trigger values (Section 8.3) if no value available in Table 3.4.1. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 5. 95th percentiles calculated using ANZECC/ARMCANZ (2000) methodology (section 7.4.4.1). 6. Reference sites defined in Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). 7. Default trigger values - from ANZECC/ARMCANZ (2000) section 4.3.3.4 trigger values for livestock drinking water. 9. Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland and lowland rivers Table 3.3.5. 10. Where the 95th percentile of a Release Limit is exceeded at a Downstream Compliance Monitoring Point and the Reference Monitoring Point also exceeds this concentration during the release/flow event, the value of the Reference Monitoring Point applies as the water quality Release Limit for the duration of the event. 11. Site-specific Release Limits for water quality (95th percentile of reference site concentration) must be calculated in accordance with QWQG (2009) and ANZECC (2000) methodology if sufficient monitoring data is available. The environmental authority holder must maintain a database documenting all relevant water quality monitoring data and calculation of 95th percentiles adopted as water quality Release Limits. 12. Values converted to Nitrate (as N) and Ammonia (as N).
- G53
The rate and daily quantity of contaminated water released from each release point must be measured
- G54
and recorded. The release of contaminants to waters must be undertaken so as not to cause erosion of the bed and banks of the receiving waters, or cause a material build-up of sediment in such waters. Receiving Waters Monitoring
- G55
The quality of receiving waters must be monitored at the locations specified in Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points) as depicted in Schedule J Figure1b (King Vol - Monitoring Points) and in accordance with the requirements specified in Table G18 (Receiving waters trigger levels and contaminant limits).
- G56
Quality characteristics measured in receiving waters must not exceed the contaminant limit specified in Table G18 (Receiving waters trigger levels and contaminant limits).
- G57
If the exceedance of any trigger level listed in Table G18 (Receiving waters trigger levels and contaminant limits) is identified in receiving waters, the holder of this environmental authority must compare the downstream results to the reference site results and: (a) if the downstream result is less than the background monitoring site data, then no action is to be taken; (b) if the result is greater than the background monitoring site data, complete an investigation into the potential for environmental harm and provide a written report to the administering authority within 3 months, outlining: i. details of the investigations carried out; ii. details of the environmental impacts observed; and iii. actions taken to prevent environmental harm. Note: Where an exceedance of a trigger value has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal- to or lesser extent for that quality characteristic. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points) Monitoring Points Receiving Waters Location Easting (GDA 94 MGA Northing (GDA 94 Description - Zone 55) MGA - Zone 55) Reference1 Monitoring Points KV03 Archies Creek 207183 8126531 M04 Ashton Creek 209761 8124664 Downstream Compliance Monitoring Points KV04 Bowler Creek 206149 8124874 KV05 Bowler Creek 207858 8123226 M01 Archies Creek 208038 8125227 MO5 Bowler Creek 208269 8124950 1 Reference sites must: (a) be from the same bio-geographic and climatic region; (b) have similar geology, soil types and topography; (c) contain a range of habitats similar to those at the test sites; (d) have a similar flow regime; and (e) not be so close to the test sites that any disturbance at the test site also results in a change at the reference site. Table G18 (Receiving waters trigger levels and contaminant limits) Quality Characteristic Water Quality2, 15 Monitoring Frequency Trigger Levels14 Contaminant Limit14 Routine based sampling: Electrical Conductivity 50013 or 80th 1,0003 Monthly (S/cm) percentile6 of reference7, 6.05 (minimum) Event based sampling of pH (pH units) whichever is higher 8.512 (maximum) discharge: 6.05 (minimum) or One sample must be taken 20th percentile6 of within twelve (12) hours of a reference7, release event or flow event whichever is lower commencing. A second sample must be taken 7.55 (maximum) or between twelve (12) and 80th percentile6 of twenty four (24) hours after the reference7, release event or flow event whichever is higher commences. Turbidity (NTU) 1510 or 80th 95th percentile6 of percentile6 of reference7 reference7, whichever is higher _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Water Hardness For interpretive purposes only (CaCO3) (mg/L) Major Cations & Anions Where a release or flow event has a duration of twenty four Sulphate (SO42-) (mg/L) 80th percentile6 of 25012 (24) hours or greater, samples reference7 must be taken daily for one (1) week, and weekly thereafter 7.216 or 80th 11.54,12 until the release or flow event percentile6 of ceases. Nitrate (as N) (mg/L) reference7, whichever is higher Ammonia (as N) (g/L) 80th percentile6 of 4114,12 reference7 Fluoride(g/L) 80th percentile6 of 1,50012 Metals & Metalloids1 reference7 Antimony (g/L) Arsenic8 (g/L) 99 or 80th percentile6 95th percentile6 of Cadmium (g/L) of reference7, reference7 (dissolved) Cobalt (g/L) whichever is higher Copper (g/L) 50011 (total); and, 95th Lead (g/L) 135 or 80th percentile6 of reference7 Molybdenum (g/L) percentile6 of (dissolved) reference7, whichever is higher 212 (total); and, 95th percentile6 of reference7 0.25 or 80th (dissolved) percentile6 of reference7, 1,00011 (total); and, 95th whichever is higher percentile6 of reference7 (dissolved) 1.49 or 80th percentile6 of 1,00011 (total); and, 95th reference7, percentile6 of reference7 whichever is higher (dissolved) 1.45 or 80th 1012 (total); and, 95th percentile6 of percentile6 of reference7 reference7, (dissolved) whichever is higher 5012 (total); and, 95th 3.45 or 80th percentile6 of reference7 percentile6 of (dissolved) reference7, whichever is higher 349 or 80th percentile6 of reference7, whichever is higher _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Selenium (g/L) 55 or 80th percentile6 1012 (total); and, 95th of reference7, percentile6 of reference7 whichever is higher (dissolved) Zinc (g/L) 85 or 80th percentile6 3,00012 (total); and, 95th of reference7, percentile6 of reference7 whichever is higher (dissolved) Organics Oils and greases No visible film 1. For water quality, all metals and metalloids must be measured as both `total' (from analysis of an unfiltered sample) and `dissolved' (from analysis of a field filtered sample). All trigger levels are based on dissolved metal concentrations; for water quality objectives, the relevant method is specified in brackets for each contaminant where applicable. 2. Water quality levels and limits are based on default trigger limits or the 80th and 95th percentile of reference system, whichever is the higher. Where appropriate the default trigger values may be hardness adjusted in accordance with ANZECC/ARMCANZ (2000) section 7.4.4. 3. "Response of stream macroinvertebrates to changes in salinity and the development of a salinity index", Horrigan et al (2005), Marine and Freshwater Research. 4. Values converted to Nitrate (as N) and Ammonia (as N). 5. Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland river ecosystems Tables 3.3.4 and Table 3.4.1 (high reliability trigger values) and moderate or low reliability trigger values (Section 8.3) if no value available in Table 3.4.1. 6. 80th and 95th percentiles calculated using ANZECC (2000) methodology (section 7.4.4.1). 7. Reference sites defined in Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). 8. Speciated arsenic concentrations for As (III) and As (V) only required if 13 g/L is exceeded - note that the sample bottle requirements for As (total species) and As (speciated) may differ. 9. Interim (low reliability) value from ANZECC (2000) Section 8.3.7.1. 10. Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland and lowland rivers Table 3.3.5. 11. Default trigger values - from ANZECC/ARMCANZ (2000) section 4.3.3.4 trigger values for livestock drinking water. 13. For aquatic ecosystem protection, based on QWQG 2009, Table G.4, Gulf zone. 14. Where the 80th/95th percentile of a water quality Trigger Level/Contaminant Limit is exceeded at a Downstream Compliance Monitoring Point and the Reference Monitoring Point also exceeds this concentration during the release/flow event, the value of the Reference Monitoring Point applies as the water quality Trigger Level/Contaminant Limit for the duration of the event. 15. Site-specific Trigger Levels and Contaminant Limits for water quality (80th and 95th percentile of reference site concentration) must be calculated in accordance with QWQG (2009) and ANZECC (2000) methodology if sufficient monitoring data is available. The environmental authority holder must maintain a database documenting all relevant water quality monitoring data and calculation of 80th/95th percentiles adopted as water quality Trigger Levels and Contaminant Limits. 16. As per the updated nitrate toxicity value in Hickey (2002) Nitrate Guideline Values in ANZECC 2000, Memorandum from the National Institute of Water and Atmospheric Research (NIWA) NZ, 30 September 2002. Stream Sediment
- G58
Sediment quality of receiving waters must be monitored at the locations defined in Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring points) as depicted in Schedule J - Figure 1b (Monitoring Points) and for the parameters defined in Table G19 (Stream Sediment Trigger and Contaminant Levels).
- G59
If the quality characteristics of sediments exceed any of the trigger levels specified in Table G19 (Stream Sediment Trigger Levels and Contaminant Limits), the holder of this environmental authority must compare the downstream site to the data from reference monitoring sites and: (a) if the level of contaminants at the downstream site does not exceed the reference monitoring site data, then no action is to be taken; or (b) if the level of contaminants at the downstream site is greater than the reference monitoring site data, complete an investigation in accordance with the ANZECC and ARMCANZ 2000 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 methodology, into the potential for environmental harm and provide a written report to the administering authority within three (3) months, outlining: (i) details of the investigations carried out; (ii) details of the environmental impacts observed; and (iii) actions taken to prevent environmental harm. Note: Where an exceedance of a trigger value has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal- to or lesser extent for that quality characteristic.
- G60
All stream sediment sampling must be undertaken in accordance with the most recent version of Australian Standard AS 5667.12 Guidance on Sampling of Bottom Sediments.
- G61
The sediment quality contaminant limit specified in Table G19 (Stream Sediment Trigger Levels and Contaminant Limits) must not be exceeded in receiving waters. Table G19 (Stream Sediment Trigger Levels and Contaminant Limits) Parameter Unit Trigger Level1,5 Contaminant Limit1,5 Monitoring frequency Fluoride mg/kg 2 times the reference2 3 times the reference2 value Antimony value Twice a year (Once Arsenic during the wet Cadmium mg/kg 23 or 2 times the reference2 254 or 3 times the reference2, mg/kg value, whichever is higher whichever is higher season, and once Cobalt mg/kg during the dry Copper mg/kg 203 or 2 times the 704 or 3 times the reference2, season) mg/kg reference2 value, whichever whichever is higher Lead mg/kg is higher Molybdenum 104 or 3 times the reference2, 1.53 or 2 times the whichever is higher reference2 value, whichever is higher 3 times the reference2 value 2 times the reference2 2704 or 3 times the reference2, value whichever is higher 653 or 2 times the 2204 or 3 times the reference2, reference2 value, whichever whichever is higher is higher 503 or 2 times the reference2 value, whichever is higher mg/kg 2 times the reference2 3 times the reference2 value value Selenium mg/kg 2 times the reference2 3 times the reference2 value value _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Parameter Unit Trigger Level1,5 Contaminant Limit1,5 Monitoring frequency Zinc mg/kg 2003 or 2 times the 4104 or 3 times the reference2, reference2 value, whichever whichever is higher is higher Particle size For interpretation purposes distribution 1. Sediment sampling, analysis and interpretation of results must be conducted in a manner consistent with the `Revision of the ANZECC/ARMCANZ Sediment Quality Guidelines, CSIRO (May 2013)' and `AS 5667.12:1999 (R2016) - Guidance on Sampling of Bottom Sediments'. 2. Reference sites are defined in Table G17 (Receiving Water Reference Monitoring Points and Downstream Compliance Monitoring Points). 3. Interim Sediment Quality Guidelines (SQG) - low values in Table 2 and the decision tree framework in Figure 1 of CSIRO (May 2013). 4. SQG - high values in Table 2 and the decision tree framework in Figure 1 of CSIRO (May 2013). 5. For sediment quality, compliance site monitoring results are to be compared: a) Directly to the guideline values from the Revision of the ANZECC/ARMCANZ Sediment Quality Guidelines, CSIRO (May 2013), if insufficient reference site monitoring data is available; or b) The relevant reference site monitoring data, which must be normalised to account for any difference in particle size distribution (i.e. conduct a fractionated sediment analysis based on comparing the metals concentrations of the <63-m sediment fraction with the >63-m to <2mm sediment fraction). Receiving Environment Monitoring Program (REMP)
- G62
By 31 June 2017, the environmental authority holder must develop and implement a Receiving Environment Monitoring Program (REMP) to monitor, identify and describe any adverse impacts to environmental values of receiving waters due to the authorised mining activity. This must include monitoring the effects of the mine on the receiving environment periodically and while contaminates are being discharged from the site. For the purposes of the REMP, the receiving environment is the waters of Bowler Creek, Archie Creek, Ashton Creek and connected or surrounding waterways within 2km downstream of the release. The REMP should encompass any sensitive receiving waters or environmental values downstream of the authorised mining activity that will potentially be directly affected by an authorised release of mine affected water.
- G63
A REMP Design Document that addresses the requirements of the REMP must be prepared and made available to the administering authority upon request.
- G64
A report outlining the findings of the REMP, including all monitoring results and interpretations must be prepared annually and made available on request to the administering authority. This must include an assessment of background reference water quality, the condition of downstream water quality compared against water quality objectives, and the suitability of current discharge limits to protect downstream environmental values. Water Management Plan
- G65
A Water Management Plan must be developed by an appropriately qualified person and implemented. Erosion and Sediment Control
- G66
An Erosion and Sediment Control Plan must be developed by an appropriately qualified person and implemented for all stages of the mining activities on the site to prevent or minimise erosion and the release of sediment to receiving waters and the contamination of storm water. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Groundwater
- G67
The extraction of groundwater must not cause environmental harm to any groundwater dependant ecosystem or other environmental value outside the predicted groundwater drawdown as depicted in Figure 7 (King Vol Predicted Groundwater Drawdown and Groundwater Bore Network). Monitoring Bore Construction, Maintenance and Decommissioning
- G68
The construction, maintenance and management of groundwater monitoring bores must be undertaken in a manner that prevents or minimises impacts to the environment and ensures the integrity of the bores to obtain representative samples of the targeted aquifer. Groundwater Management Program
- G69
A Groundwater Management Program must be developed and certified by an appropriately qualified person and implemented by the environmental authority holder prior to extraction of groundwater for mine dewatering.
- G70
The Groundwater Management Program required by condition G69 must include adequate monitoring of all receiving waters to determine compliance with all conditions of this environmental authority by an appropriately qualified person and achieve the following objectives: a) be capable of detecting any impacts to groundwater levels and groundwater quality due to the mining activity; b) determine compliance with condition G67; c) ensure all potential groundwater impacts due to the mining activity are identified, mitigated and monitored; and d) Identify any deviation from the predicted groundwater drawdown impacts as depicted in Figure 7 (King Vol Predicted Groundwater Drawdown and Groundwater Bore Network).
- G71
The Groundwater Management Program required by condition G69 must be reviewed by 1 July each year by an appropriately qualified person. The annual review must include: a) an assessment against the objectives in condition G70; b) recommended actions including timeframes for implementation, to ensure that any groundwater impacts not authorised under this environmental authority are prevented; c) interpretation and discussion of exceedance of any contaminant trigger levels or contamination limits listed in Table G21 (Groundwater Trigger Levels and Contaminant Limits).
- G72
In relation to the annual review required by condition G71, the environmental authority holder must: a) upon receipt of the annual review, implement any recommendations from the review within the recommended timeframes; and b) upon request, provide the administering authority a copy of the annual review and written notification of actions being taken to address any recommendations from the annual review, including any changes necessary to the Groundwater Management Program.
- G73
Groundwater quality and levels must be monitored at the locations and frequencies specified in Table G20 (Groundwater monitoring locations and frequency) as depicted in Schedule J - Figure 4b (King Vol _____________________________________________________________________________________________________________ Environmental authority EPML00562913 - Groundwater Monitoring Bore Network) for all quality characteristics specified in Table G21 (Groundwater Trigger Levels and Contaminant Limits). Table G20 (Groundwater monitoring locations and frequency) Monitoring point Easting Northing Surface Screened Monitoring frequency (GDA 94 (GDA 94 AHD interval (m MGA - MGA - (m) Quarterly - water quality Zone 55) Zone 55) AHD) Monthly - Levels2 Reference Bores1 Quarterly - water quality Monthly - Levels2 KVMB004B 206445 8126152 251.59 203.59- 191.59 Quarterly - water quality Monthly - Levels2 Compliance Bores 207352 8124823 246.47 Not KVMB002A Quarterly - water quality screened Monthly - Levels2 KVMB002B 207347 8124872 247.32 187.32- Quarterly - water quality 169.32 Monthly - Levels2 KVMB003 208138 8123766 243.48 177.48- Quarterly - water quality 159.48 Monthly - Levels2 KVMB007r 207334 8125553 250.25 202.25- Quarterly - water quality 190.25 Monthly - Levels2 KVMB008 206463 8125058 253.90 205.90- Quarterly - water quality 193.90 Monthly - Levels2 Monitoring Bores 206816 8125556 254.29 200.29- Quarterly - water quality KVMB001A 170.29 Monthly - Levels2 KVMB001B 206930 8125465 256.96 190.96- Quarterly - water quality 166.96 Monthly - Levels2 KVMB006B 206803 8125744 258.82 222.82- Quarterly - water quality 210.82 Monthly - Levels2 KVMB009 TBA3 TBA3 TBA3 TBA3 North-west extent of drawdown TBA3 TBA3 TBA3 TBA3 KVMB010 North extent of drawdown (Eastern Limestone) _____________________________________________________________________________________________________________ Environmental authority EPML00562913 KVMB011 TBA3 TBA3 TBA3 TBA3 Quarterly - water quality South extent of drawdown Monthly - Levels2 (Eastern Limestone) KVMB012 TBA3 TBA3 TBA3 TBA3 Quarterly - water quality East extent of drawdown Monthly - Levels2 1 Reference sites must: a. be from the same bio-geographic and climatic region; b. have similar geology, soil types, topography and flow regime; and c. not be so close to the test sites that any disturbance at the test site also results in a change at the reference site. 2 All measurements for groundwater levels are to be taken from the top of the bore casing to the nearest 5cm and adjusted for the bore casing height. 3 Detail to be provided to the administering authority prior to the dewatering of groundwater below 200 meters BGL.
- G74
Groundwater from Compliance Bores identified in Table G20 (Groundwater monitoring locations and frequency), must not exceed any of the contaminant limits defined in Table G21 (Groundwater Trigger Levels and Contaminant Limits). Table G21 (Groundwater Trigger Levels and Contaminant Limits) Quality Contaminant trigger level13, 14 Contaminant limit13, 14 characteristic Electrical conductivity 5004 or 80th percentile5 of reference3, 1,0008 6.02 (minimum) (S/cm) whichever is higher 8.511 (maximum) pH (pH units) 6.02 (minimum) or 20th percentile5 of reference3, whichever is lower 7.52 (maximum) or 80th percentile5 of reference3, whichever is higher Water hardness Interpretation purposes only7 (CaCO3) (mg/L) Major cations and Interpretation purposes only anions 80th percentile5 of reference3 Sulphate (SO42-) (mg/L) 25011 Nitrate (as N) (mg/L) 7.218 or 80th percentile5 of reference3, 11.511, 12 whichever is higher 41111, 12 1,50011 Ammonia (as N) 80th percentile5 of reference3 (g/L) Fluoride (g/L) 80th percentile5 of reference3 Metals and Metalloids1 _____________________________________________________________________________________________________________ Environmental authority EPML00562913 Quality Contaminant trigger level13, 14 Contaminant limit13, 14 characteristic Antimony (g/L) 99 (dissolved) or 80th percentile5 of 95th percentile5 of reference3 reference3, whichever is higher (dissolved) Arsenic (g/L)10 132 (dissolved) or 80th percentile5 of 5006 (total); and, 95th percentile5 of reference3, whichever is higher reference3 (dissolved) Cadmium (g/L) 0.22 (dissolved) or 80th percentile5 of 211 (total); and, 95th percentile5 of reference3, whichever is higher reference3(dissolved), Cobalt (g/L) 1.49 (dissolved) or 80th percentile5 of 1,0006 (total); and, 95th percentile5 reference3, whichever is higher of reference3 (dissolved), Copper (g/L) 1.42 (dissolved) or 80th percentile5 of 1,0006 (total); and, 95th percentile5 reference3, whichever is higher of reference3 (dissolved), Lead (g/L) 3.42 (dissolved) or 80th percentile5 of 1011 (total); and, 95th percentile5 of reference3, whichever is higher reference3 (dissolved), Molybdenum (g/L) 349 (dissolved) or 80th percentile5 of 5011 (total); and, 95th percentile5 of reference3, whichever is higher reference3 (dissolved), Selenium (g/L) 52 (dissolved) or 80th percentile5 of 1011 (total); and, 95th percentile5 of reference3, whichever is higher reference3 (dissolved), Zinc (g/L) 82 (dissolved) or 80th percentile5 of 3,00011 (total); and, 95th reference3, whichever is higher percentile5 of reference3 (dissolved), 1 For water quality, all metals and metalloids must be measured as both `total' (from analysis of an unfiltered sample) and `dissolved' (from analysis of a field filtered sample). All trigger levels are based on dissolved metal concentrations; for water quality objectives, the relevant method is specified in brackets for each contaminant where applicable. 2 Default trigger values - from ANZECC/ARMCANZ (2000) trigger values for aquatic ecosystems indicative of slightly-to-moderately disturbed tropical Australian upland river ecosystems Tables 3.3.4 and Table 3.4.1 (high reliability trigger values) and moderate or low reliability trigger values (Section 8.3) if no value available in Table 3.4.1. 3 Reference sites as specified in Table G20 (Groundwater monitoring locations and frequency). 4 For aquatic ecosystem protection, based on QWQG 2009, Table G.4, Gulf zone. 5 80th and 95th percentiles are calculated using ANZECC 2000 methodology. 6 For protection of livestock drinking water, based on ANZECC 2000 section 4.3.3.4 trigger values for livestock drinking water. 7 Contaminant trigger values may be adjusted for water hardness (30mg/L calcium carbonate) in accordance with Table 3.4.3 of ANZECC. The hardness modified trigger values (HMTV) will be compared with the contaminant trigger values specified in Table G21 and if the monitoring result exceeds the HMTV it will then constitute an exceedance of the trigger values specified in Table G21. An investigation will then be required under condition G75 of this environmental authority. 8 Based on toxicity studies "Response of stream macroinvertebrates to changes in salinity and the development of a salinity index", Horrigan et al (2005), Marine and Freshwater Research. 9 Interim (low reliability) value from ANZECC (2000) Section 8.3.7.1. 10 Speciated arsenic concentrations can be included for analysis from the outset, or alternatively, an arsenic (total species) sample can be determined with analysis for As (III) and As (V) only required if 13 g/L is exceeded - note that the sample bottle requirements for As (total species) and As (speciated) may differ. - Table 10.4 - Guideline values for physical and chemical characteristics. 12 Values converted to Nitrate (as N) and Ammonia (as N). 13 Where the 80th/95th percentile of a water quality Trigger Level/Contaminant Limit is exceeded at a Compliance Bore and the Reference Bore(s) also exceeds this concentration during the sampling event, the value of the Reference Bore applies as the water quality Trigger Level/Contaminant Limit for the duration of the event. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 14 Site-specific Trigger Levels and Contaminant Limits for water quality (80th and 95th percentile of reference site concentration) must be calculated in accordance with QWQG (2009) and ANZECC (2000) methodology if sufficient monitoring data is available. The environmental authority holder must maintain a database documenting all relevant water quality monitoring data and calculation of 80th/95th percentiles adopted as water quality Trigger Levels and Contaminant Limits. 15 As per the updated nitrate toxicity value in Hickey (2002) Nitrate Guideline Values in ANZECC 2000, Memorandum from the National Institute of Water and Atmospheric Research (NIWA) NZ, 30 September 2002. Exceedance investigation
- G75
If the quality characteristics as measured in the compliance bores listed in Table G20 (Groundwater monitoring locations and frequency) exceed any of the trigger levels specified in Table G21 (Groundwater Trigger levels and Contaminant Limits), the holder of this environmental authority must compare the results from the compliance bores to the data from the reference bores and: (a) if the level of contaminants as measured in the compliance bore does not exceed the reference bore results, then no action is to be taken; (b) if the level of contaminants at the compliance bore is greater than the reference bore results, complete an investigation in accordance with the ANZECC & ARMCANZ 2000, into the potential for environmental harm and provide a written report to the administering authority within three (3) months, outlining: i. details of the investigations carried out; ii. details of environmental impacts observed, and iii. actions taken to prevent environmental harm. Note: Where an exceedance of a trigger level has occurred and is being investigated, in accordance with part (b) of this condition, no further reporting is required for subsequent trigger events of an equal- to or lesser extent for that quality characteristic.
- G76
If groundwater drawdown is determined to be greater than the predicted groundwater drawdown depicted in Figure 7 (King Vol Predicted Groundwater Drawdown and Groundwater Bore Network), the environmental authority holder must: a) notify the administering authority within 24 hours; and b) conduct an investigation to establish whether any environmental harm has been caused to any groundwater dependent ecosystems or other environmental value in accordance with the ANZECC & ARMCANZ 2000 methodology and provide a written report to the administering authority within three (3) months, outlining: i. details of the investigations carried out; ii. details of environmental impacts observed, and iii. actions taken to prevent environmental harm.
- G77
Prior to the dewatering of groundwater below 200 meters BGL, a Subterranean Fauna Monitoring and Management Program must be developed by an appropriately qualified person and implemented by the environmental authority holder in accordance with the Guideline for the Environmental Assessment of Subterranean Aquatic Fauna.
- G78
The Subterranean Fauna Monitoring and Management Program required by condition G77 must include adequate monitoring of stygofauna in all groundwater potentially impacted by the mining activities and must achieve the following objectives: a) Identify and describe subterranean fauna species present; b) Assess and describe predicted impacts to subterranean fauna identified; c) Recommend impact mitigation and minimisation measures for the fauna identified; d) Monitor and record the effects of the mining activity on the subterranean fauna species; and _____________________________________________________________________________________________________________ Environmental authority EPML00562913 e) Recommend actions, including timeframes for implementation, to ensure that any impacts to subterranean fauna not authorised under this environmental authority, are prevented. Water Reuse
- G79
Contaminants may be piped or trucked or transferred by some other means that does not contravene the conditions of this environmental authority and deposited into artificial water storage structures, such as farm dams or tanks, or used directly at properties owned by the environmental authority holder or a third party (with the consent of the third party). Applicability of conditions
- G80
Conditions G45 - G79 are only applicable to King Vol. END OF CONDITIONS FOR SCHEDULE G _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE H - SEWAGE TREATMENT Sewage Treatment
- H1
All effluent released from the sewage treatment plants must be monitored at the frequency and for the parameters specified in Table H1 (Sewage effluent quality targets for dust suppression and irrigation). Table H1 (Sewage effluent quality targets for dust suppression and irrigation) Parameter limit Units Limit type Monitoring frequency Total suspended solids 30 mg/l 4 out of 5 consecutive Six monthly 50 samples. Six monthly Biological oxygen demand 20 mg/l Maximum 30 4 out of 5 consecutive samples. Maximum pH between 6.5 pH unit Range Monthly 8.5 Median1 Quarterly Maximum Monthly Faecal coliforms 1,000 CFU/100 4,000 Range Free residual chlorine level 0.2 mg/L 0.7 1 Median of at least 5 but no more than 10 consecutive samples
- H2
Sewage effluent must not exceed sewage effluent release limits defined in Table H1 (Sewage effluent quality targets for dust suppression and irrigation).
- H3
Sewage effluent used for dust suppression or irrigation must not cause spray drift or over spray to any odour sensitive place.
- H4
Sewage effluent from sewage treatment facilities must be reused or evaporated and must not be directly or indirectly released to any receiving waters. END OF CONDITIONS FOR SCHEDULE H _____________________________________________________________________________________________________________ Environmental authority EPML00562913 SCHEDULE I - DEFINITIONS Words and phrases used throughout this Environmental Authority are defined below except where identified in the Environmental Protection Act 1994 or subordinate legislation. Where a word or term is not defined, the ordinary English meaning applies, and regard should be given to the Macquarie Dictionary. "acceptance criteria" means the measures by which actions implemented are deemed to be complete. The acceptance criteria indicate the success of the decommissioning and rehabilitation outcomes or remediation of areas which have been significantly disturbed by the environmentally relevant activities. Acceptance criteria may include information regarding: a) stability of final land forms in terms of settlement, erosion, weathering, pondage and drainage; b) control of geochemical and contaminant transport processes; c) quality of runoff waters and potential impact on receiving environment; d) vegetation establishment, survival and succession; e) vegetation productivity, sustained growth and structure development; f) fauna colonisation and habitat development; g) ecosystem processes such as soil development and nutrient cycling, and the recolonisation of specific fauna groups such as collembola, mites and termites which are involved in these processes; h) microbiological studies including recolonisation by mycorrhizal fungi, microbial biomass and respiration; i) effects of various establishment treatments such as deep ripping, topsoil handling, seeding and fertiliser application on vegetation growth and development; j) resilience of vegetation to disease, insect attack, drought and fire; k) vegetation water use and effects on ground water levels and catchment yields. "acid mine drainage (AMD)" means any contaminated release emanating from a mining operation formed through a series of chemical and biological reaction, when geological strata is disturbed and exposed to oxygen and moisture as a result of mining operations. "acid rock drainage" means any contaminated release emanating from a mining activity formed through a series of chemical and biological reactions, when geological strata is disturbed and exposed to oxygen and moisture as a result of the mining activity. "AEP" means the Annual Exceedance Probability, which is the probability that at least one event in excess of a particular magnitude will occur in any given year. "affected person" means someone whose drinking water can potentially be impacted as a result of discharges from a dam or their life or property can be put at risk due to dwellings or workplaces being in the path of a dam break flood. "airblast overpressure" means energy transmitted from the blast site within the atmosphere in the form of pressure waves. The maximum excess pressure in this wave, above ambient pressure is the peak airblast overpressure measured in decibels linear (dBL). "ambient (or total) noise" at a place, means the level of noise at the place from all sources (near and far), measured as the Leq for an appropriate time interval. _____________________________________________________________________________________________________________ Environmental authority EPML00562913 "annual inspection report" means an assessment prepared by a suitably qualified and experienced person containing details of the assessment against the most recent consequence assessment report and design plan (or system design plan); (a) against recommendations contained in previous annual inspections reports; (b) against recognised dam safety deficiency indicators; (c) for changes in circumstances potentially leading to a change in consequence category; (d) for conformance with the conditions of this authority; (e) for conformance with the `as constructed' drawings; (f) for the adequacy of the available storage in each regulated dam, based on an actual observation or observations taken after 31 May each year but prior to 1 November of that year, of accumulated sediment, state of the containment barrier and the level of liquids in the dam (or network of linked containment systems); (g) for evidence of conformance with the current operational plan. "annual exceedance probability" or "AEP" the probability that at least one event in excess of a particular magnitude will occur in any given year. "appropriately qualified person" means a person who has professional qualifications, training, skills or experience relevant to the nominated subject matter and can give authoritative assessment, advice and analysis on performance relative to the subject matter using the relevant protocols, standards, methods or literature. "assessed" or "assessment" by a suitably qualified and experienced person in relation to a consequence assessment of a dam, means that a statutory declaration has been made by that person and, when taken together with any attached or appended documents referenced in that declaration, all of the following aspects are addressed and are sufficient to allow an independent audit of the assessment: (a) exactly what has been assessed and the precise nature of that determination; (b) the relevant legislative, regulatory and technical criteria on which the assessment has been based; (c) the relevant data and facts on which the assessment has been based, the source of that material, and the efforts made