Data as at 14 September 2026 · from the Queensland EP Act public register
EPML00712113 · MT RAWDON OPERATIONS PTY LTD
Minerals environmental authority EPML00712113 (MT RAWDON OPERATIONS PTY LTD), Granted. 144 conditions indexed. Holds PRC plan P-PRCP-100821897.
- Status
- Granted
- Holders
- MT RAWDON OPERATIONS PTY LTD
- Tenures
- ML100059; ML1192; ML1203; ML1204; ML1206; ML1210; ML1231; ML1259; ML50119
- PRC plan
- P-PRCP-100821897 · effective 2025-09-01
- How it was read
- Numbered conditions
- Register
- Register record · Instrument PDF
Conditions
144 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
Contaminants with the potential to cause environmental harm must not be released directly or indirectly to the receiving environment, except as permitted under the conditions of this environmental authority.
- A3
The environmental authority holder must ensure that the activity is carried out in accordance with Table A1. Table A1 - Authorised disturbance (`Table A1') Mine domain1 Mine feature name Sub-domain Maximum Location (GDA94) Area (ha) disturbance Central Peg Coordinates area (ha) Clay Borrow 375917.3566 7205686.401 Cleared/ Topsoil 375097.6334 7205778.725 Stripped 33.92 Combined Borrow Borrow Pit Pit and Topsoil 38.74 Stockpile Area 374787.03 7206261.04 NAF Rock Borrow 4.82 374946.7038 7203876.49 Core Yard 0.85 376331.25 7205422.59 Environment 1.265 375938.9904 7203935.688 Experiment Hardstand Explosive Magazine 0.709 374381.736 7204749.723 Future Infrastructure 1.978 375301.74 7204899.99 Area Helipad 0.769 375857.7162 7205906.014 Infrastructure Mining Operations 54.98 (mobile 1.579 375431.4463 7205293.051 maintenance) MRT Training Area 0.885 376440.5676 7205541.877 Orica 0.439 376222.53 7206161.83 Pipelines (disturbance within 0.0 377709.96 7206453.42 other areas) Powerlines 12.83 376669.59 7205060.97 Permit Environmental authority EPML00712113 - Mt Rawdon Mine domain1 Mine feature name Sub-domain Maximum Location (GDA94) Area (ha) disturbance Central Peg Coordinates area (ha)
- WD1
3.03 376034.6416 7205481.253
- WD2
5.72 376389.4565 7205250.938
- WD4
0.00 376555.9628 7204223.605 West Dam 374749.0942 7203761.15 Effluent irrigation 1.5 area (disturbance 374946 7204814 within processing area) 376745.50 7205142.66 Bioremediation Wetland West WRD WWRD Footprint 39.346 39.35 374614.14 7204193.13 1 Mine domains depicted is Schedule J, Map 1 - Location of authorised disturbance and Map 2A - Infrastructure locations
- A4
The holder of this environmental authority must: a) install all 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 and efficient condition; c) operate such measures, plant, and equipment in a proper and efficient manner; and d) ensure all instruments and devices used for the measurement or monitoring of any parameter under any condition of this environmental authority are properly calibrated. Permit Environmental authority EPML00712113 - Mt Rawdon Monitoring
- A5
Except where specified in another condition of this environmental authority, all monitoring data, records and reports required by this environmental authority or related to environmental management of the activities must be: a) carried out by an appropriately qualified person, periodically reviewed and updated as required to reflect operational or environmental changes; b) kept for a period of not less than five (5) years; c) provided to the administering authority in the specified format within 10 business days of a request; and d) undertaken in accordance with the most recent version of any applicable standard or guideline for the activity
- A6
The following information must be recorded in relation to all monitoring required under a condition of this environmental authority: a) the date and time when the sample was taken; b) the location where the sample was taken; and c) any other pertinent details of relevance to interpreting the sampling results (i.e. stream flow, wind conditions or any unusual observations such as odour or colouration).
- A7
The environmental authority holder must implement all reasonable measures necessary to conduct monitoring required under a condition of this environmental authority. Note: `Reasonable measures' could include establishing and maintaining safe all-weather access to a monitoring location by upgrading roads/tracks, use of suitable automated sampling devices, developing alternative routes or utilising alternative transport. Financial assurance
- A8
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
- A9
The holder of this environmental authority must develop and implement a risk management system for mining activities which mirrors the content requirement of the Standard for Risk Management (ISO31000:2009), or the latest edition of an Australian standard for risk management, to the extent relevant to environmental management, by 23 June 2017. Notification of emergencies, incidents, and exceptions
- A10
The environmental authority holder must notify the administering authority within 24 hours of becoming aware of any emergency, incident, sample result or event which does or may contravene a condition of this environmental authority. Permit Environmental authority EPML00712113 - Mt Rawdon
- A11
Within 10 business days following the initial notification of an emergency, event or incident, or receipt of monitoring results, whichever is the latter, further written advice must be provided to the administering authority, including the following: a) results and interpretation of any samples taken and analysed; 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. Complaints
- A12
The holder of this environmental authority must record all environmental complaints received about the mining activities including: 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
- A13
When requested by the administering authority, the environmental authority holder must undertake specified monitoring within the timeframe nominated by the administering authority, to investigate any complaint related to the activity. Third-party reporting
- A14
The holder of this environmental authority must: a) by 8 January 2018, 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 (3) 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
- A15
All explosives, flammable or corrosive substances, hazardous chemicals, toxic substances, gases and dangerous goods must be stored and handled in accordance with: a) the current Australian Standard where applicable; or b) where no relevant Australian Standard exists, store such materials within an on-site containment system sufficient to prevent release to the receiving environment.
- A16
Minimise the potential for contamination of land by hazardous contaminants. END OF SCHEDULE A Permit Environmental authority EPML00712113 - Mt Rawdon Schedule B - Air
- C1
All waste generated as part of the mining activities must be disposed of in a lawful manner at an off-site facility, with the exception of: a) waste rock and tailings, which must be characterised, handled and disposed of in accordance with condition C4 of this environmental authority; b) timber pallets; c) general waste disposed of into the waste disposal trench facility as per condition C2; d) waste rock determined not to be potentially acid forming may be disposed into the West Waste Rock Dump; and e) tyres, subject to condition C3. Note: The only waste authorised to be burnt on site is explosive boxes, so long as the burning does not cause environmental harm.
- C2
General waste must only be disposed of into the waste disposal trench facility of ML1259 and identified in Schedule J Map 2A - Site Infrastructure.
- C3
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 mining activities may be disposed of on site in the North Waste Rock Dump and the West Waste Rock Dump.
- C4
All waste rock and tailings must be: a) geochemically characterised and disposed of in a manner that minimises the potential generation and/or release of contaminants to the receiving environment; b) where the geochemical characteristics of waste rock is uncertain, this material must be treated as potentially acid forming, saline mine drainage or neutral mine drainage forming until demonstrated otherwise; and c) details pertaining to meeting the requirements of this condition must be recorded and retained until this environmental authority is surrendered Sewage Treatment
- C5
Condition C6 take effect from 23 June 2018.
- C6
The only contaminant permitted to be released to land is treated sewage effluent in compliance with the release limits stated in Table C1. Permit Environmental authority EPML00712113 - Mt Rawdon Table C1 - Treated sewage contaminant release limits (`Table C1') Contaminant Unit Release limit Limit type Frequency Maximum Monthly 5 day Biochemical mg/L 20 Maximum Monthly oxygen demand (BOD)1 Maximum Monthly Maximum Monthly Total suspended solids mg/L 30 Maximum Monthly Monthly Nitrogen mg/L 30 Range Phosphorus mg/L 15 E-coli Organisms/100ml 1000 pH pH units 6.0 - 9.0
- C7
Treated sewage effluent may only be released to land from the following locations: a) within the nominated irrigation area identified in Table A1; b) other land for the purpose of dust suppression and/or firefighting
- C8
The application of treated effluent to land must be carried out in a manner such that: a) vegetation is not damaged b) there is no surface ponding of effluent c) there is no run-off or over spray of effluent
- C9
All sewage effluent released to land must be monitored at the frequency and for the contaminants specified in Table C1.
- C10
The daily volume of effluent releases must be measured and documented.
- C11
When circumstances prevent the irrigation or beneficial reuse of treated sewage effluent such as during or following rain events, measures must be taken to store or lawfully dispose of effluent.
- C12
Treated sewage effluent must only be supplied to another person or organisation that has a written plan detailing how the user of the treated sewage effluent will comply with their general environmental duty whilst using the treated sewage effluent. END OF SCHEDULE C Permit Environmental authority EPML00712113 - Mt Rawdon Schedule D - Noise Noise limits
- D1
The holder of this environmental authority must ensure that noise generated by the mining activities does not cause the criteria in Table D1 to be exceeded at a sensitive place or commercial place. Table D1 - Noise limits (`Table D1') Sensitive Place Noise level Monday to Saturday Sundays and Public Holidays DB(A) 7am to 6pm 6pm to 10pm 10pm to 7am 9am to 6pm 6pm to 10pm 10pm to measured as: 9am L CV = 50 CV = 45 CV = 40 CV = 45 CV = 40 CV = 35 Aeq, adj, 15 mins AV = 5 AV = 5 AV = 0 AV = 5 AV = 5 AV = 0 L CV = 55 CV = 50 CV = 45 CV = 50 CV = 45 CV = 40 A1, adj, 15 mins AV = 10 AV = 10 AV = 5 AV = 10 AV = 10 AV = 5 Commercial Place Noise level Monday to Saturday Sundays and Public Holidays DB(A) 7am to 6pm 6pm to 10pm 10pm to 7am 9am to 6pm 6pm to 10pm 10pm to measured as: 9am L CV = 55 CV = 50 CV = 45 CV = 50 CV = 45 CV = 40 Aeq, adj, 15 mins AV = 10 AV = 10 AV = 5 AV = 10 AV = 10 AV = 5 Table D1 - Noise limits notes: 1. CV = Critical Value 2. AV = Adjustment Value 3. To calculate noise limits in Table D1: If bg (CV - AV): Noise limit = bg + AV If (CV - AV) < bg CV: Noise limit = CV If bg > CV: Noise limit = bg + 0 4. In the event that measured bg (L A90, adj, 15 mins ) is less than 30 dB(A), then 30 dB(A) can be substituted for the measured background level 5. bg = background noise level (L A90, adj, 15 mins ) measured over 3-5 days at the nearest sensitive receptor 6. If the project is unable to meet the noise limits as calculated above alternative limits may be calculated using the processes outlined in the "Planning for Noise Control" guideline. Permit
- D2
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 D2 to be exceeded at a sensitive place or commercial place. Table D2 - Blasting noise limits (`Table D2') Blasting noise Sensitive or commercial blasting noise limits place limits limits Monday to Friday 7am to Monday to Friday 6pm Monday to Friday 6pm 6pm to 7am to 7am Saturday, Sunday and Public Saturday, Sunday and Saturday, Sunday and Holidays 9am - 6pm Public Holidays 6pm - Public Holidays 6pm - Open Cut Pits and 9am 9am Underground Workings Open Cut Pits Underground Workings Airblast 115 dB (Linear) Peak for 9 out 115 dB (Linear) Peak overpressure of 10 consecutive blasts for 9 out of 10 initiated and not greater than No blasting consecutive blasts 120 dB (Linear) Peak at any initiated and not greater time than 120 dB (Linear) Peak at any time Ground vibration 5mm/second peak particle 5mm/second peak peak particle velocity for 9 out of 10 particle velocity for 9 velocity out of 10 consecutive consecutive blasts and not blasts and not greater greater than 10 mm/second No blasting than 10 mm/second peak particle velocity at any peak particle velocity at time any time Monitoring and reporting
- D3
Noise monitoring and recording must include the following descriptor characteristics and matters: a) L (where N equals the statistical levels of 1, 10 and 90 and T = 15 mins) AN,T 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 one third octave band measurements in dB(LIN) for centre frequencies in the 10 - 200 Hz range. Note: Noise and blast monitoring as required by the administering authority in accordance with Schedule A - condition A13. END OF SCHEDULE D Permit Environmental authority EPML00712113 - Mt Rawdon Schedule E - Water
- E1
All determinations of the quality of contaminants released must be made in accordance with methods prescribed in the latest edition of the Environmental Protection Agency Water Quality Sampling Manual, and carried out on samples that are representative.
- E2
Contaminants must not be released to any waters unless otherwise permitted by a condition of this environmental authority. For the purpose of this condition only, "waters" does not include stormwater channels from: a) the waste rock dump area to the waste rock dump containment dams WD1, WD2, WD3, WD4; West Dam, South Dam; and b) the Tailings Storage Facility to Sediment Dam 3 (and includes Sediment Dam 1); and c) the Process Water Dam to South Dam.
- E3
The holder of this authority must implement a Storm Water Management Plan that must include, but may not be limited to, measures to: a) prevent incident stormwater and stormwater run-off from contacting wastes or contaminants; and b) divert upstream run-off away from disturbed areas, or areas containing wastes or contaminants; and c) capture and manage run-off from disturbed areas (including waste rock dump areas); and d) manage pit water (including that resulting from inflow of groundwater).
- E4
Stormwater impacted by the mining activities may only be discharged from the Containment locations listed in Table E1 and must comply with the contaminant limits defined in Table E2.
- E5
Stormwater released from the Containment locations listed in Table E1 must be monitored at the locations and frequencies defined in Table E1 for the parameters shown in Table E2.
- E6
All reasonable and practicable erosion protection measures and sediment control measures must be implemented and maintained to minimise erosion and the release of sediment.
- E7
Erosion control and sediment control structures must be maintained at all times and repaired or replaced as required after each rainfall event.
- E8
In the event that a release from any dam spillway is necessary the release must be controlled or managed in such a manner that prevents erosion of any watercourse or areas affected or potentially affected by the release.
- E9
Receiving waters potentially impacted by the release of stormwater impacted by mining activities, seepage from site dams or potentially impacted ground water must be monitored at the locations and frequencies defined in Table E3, for the water quality parameters listed in Table E4. Permit Environmental authority EPML00712113 - Mt Rawdon Table E1 - Containment Dams monitoring locations and frequency (`Table E1') Impacted stormwater release location Monitoring Frequency Spillway of Waste Rock Dump containment dam WD1 In the event of a release from the dam spillway Spillway of Waste Rock Dump containment dam WD2 In the event of a release from the dam spillway Spillway of Waste Rock Dump containment dam WD3 In the event of a release from the dam spillway Spillway of Waste Rock Dump containment dam WD4 In the event of a release from the dam spillway Spillway of Sediment Dam 3 located in headwaters of In the event of a release from the dam spillway Rawdon Creek Spillway of West Waste Rock Dump containment Dam - In the event of a release from the dam spillway West Dam Table E2 - Containment Dams contaminant release limits (`Table E2') Water quality Units Release Limit for WD1, WD2, Release Limits for West Dam parameter WD3, WD4, and Spillway of Sediment Dam 3. Total Suspended mg/L Must not exceed 1200 mg/L or Within 10% greater than Solids 10% greater than a background background value of the value1 of the receiving waters receiving water. whichever is the greater. pH pH units 6.0 - 9.0 (range) 6.0 - 9.0 (range) Total Dissolved Solids mg/L <1000 <900 Sulfate mg/L <100 <100 Copper mg/L <0.04 <0.0025 Zinc mg/L <0.15 <0.031 Arsenic mg/L <0.05 <0.01 Cadmium mg/L <0.005 <0.0008 WAD Cyanide mg/L <0.007 <0.007 Note 1: A "background value" for a quality characteristic is the value of the quality characteristic measured on the same day at a background sampling and in-situ monitoring point in the receiving waters not affected by the release situated further than 20 metres up- current from the release point into Twelve Mile Creek and Swindon Creek.
- E10
In the event that monitoring results, as interpreted by a suitably qualified person, indicate an impact in terms of contaminant levels in downstream monitoring sites compared to levels found in upstream monitoring sites, then the environmental authority holder must complete an investigation into the source, cause or extent of environmental harm being caused, or the extent of environmental harm likely to be caused, and provide this to the administering authority within one (1) month of receiving the analysis results. For the purposes of this condition, a suitably qualified person is someone possessing appropriate qualifications and experience in the field of surface water monitoring program design monitoring and data analysis and who can competently make recommendations about these matters. In assessing the monitoring results the suitably qualified person must give consideration to relevant methodology and water quality criteria specified by the Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand in Australian Guidelines for Water Quality Monitoring and Reporting, 2000 and Australian and New Zealand Guidelines for Fresh and Marine Water Quality, 2000 or more recent editions of the documents. Table E3 - Receiving waters monitoring locations and frequency (`Table E3') Monitoring Classification Easting (AMG) Northing (AMG) Monitoring frequency point Perry River Downstream 378842 7208200 Monthly1, in the event of flow Downstream in the receiving waters Swindon Creek Downstream 375038 7207001 Monthly1, in the event of flow Downstream in the receiving waters Rawdon Creek Downstream 375890 7206438 Monthly1, in the event of flow Downstream in the receiving waters Twelve Mile Downstream 377113 7206554 Monthly1, in the event of flow Creek in the receiving waters Downstream Mingham Creek 375320 7202870 Monthly1, in the event of flow Downstream in the receiving waters Downstream Swindon Creek Upstream 373410 7205443 Monthly1, in the event of flow Upstream in the receiving waters Twelve Mile Upstream 377298 7204777 Monthly1, in the event of flow Creek Upstream in the receiving waters Perry River Upstream 374746 7207281 Monthly1, in the event of flow Upstream in the receiving waters Mingham Creek Upstream 374586 7203135 Monthly1, in the event of flow Upstream in the receiving waters 1. Where possible monitoring should coincide with groundwater monitoring Permit Environmental authority EPML00712113 - Mt Rawdon
- E11
The Tailings Storage Facility must be monitored for the water quality parameters indicated and at the frequency specified in Table E5.
- E12
In the event that monitoring conducted in accordance with condition E11 indicates the water quality within the Tailings Storage Facility does not comply with the contaminant limits defined in Table E5, implement all reasonable and practicable measures to prevent access by all livestock and minimise access by native fauna to the dam. Table E5 - Water quality limits for Tailings Storage Facility (`Table E5') Water Quality Parameter Units Contaminant limit Monitoring frequency WAD Cyanide mg/L 50 Quarterly Arsenic mg/L 0.5 Quarterly Sulfate mg/L 1000 Quarterly Copper mg/L 0.5 Quarterly Zinc mg/L 20 Quarterly Lead mg/L 0.1 Quarterly
- E13
The design storage allowance on 1st November of each year for all regulated dams constructed or operated within the operational land must comply with Table E6. Permit Environmental authority EPML00712113 - Mt Rawdon Table E6 - Storage design1 for regulated dams (`Table E6') Dam Design Storage Allowance2 Spillway Critical Mandatory4 Critical Wet Period Design Storm3 Reporting Level Tailings Storage 1: 200 Year AEP 4-month wet season plus 1: 100 Year Facility process inputs for the 4-month wet season 1: 10000 Year AEP AEP Sediment Dam 3 1:20 Year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP
- WD1
1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP
- WD2
1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP
- WD3
1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP
- WD4
1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP Process Water 1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year Pond AEP South Dam 1:20 year AEP 4-month wet season 1:100 Year AEP 1:10 Year AEP West Dam 1:20 year AEP 4-month wet season 1:1000 Year AEP 1:10 Year AEP NOTE: AEP means Annual Exceedance Probability - being the probability that at least one event as specified will occur in a particular year. 1 Calculations are to be carried out in accordance with the guideline titled Site Water Management within the Technical Guidelines for Environmental Management of Exploration and Mining in Queensland (DME 1995). 2 The design storage allowance on 1st November of each year for any regulated dam constructed within the operational land must be sufficient to contain the run-off from the critical wet period - plus the volume of any other inputs to the storage facility during that critical wet period, as part of operations. Such inputs could be tailings, contaminated site waters, process waters, and any other materials. 3 The critical storm has a duration that produces the peak discharge for the catchment. 4 The level below spillway crest that can accommodate runoff from a 72-hour storm at the specified AEP, or the wave allowance at the specified AEP - whichever level is lower.
- E14
The spillway for any regulated dam, constructed or operated within the operational land must be designed and maintained to withstand the peak flow from the spillway capacity critical design storm defined in Table E6.
- E15
In the event that a release from a Regulated Dam spillway or the Tailings Storage Facility spillway is required, environmental harm from the discharge must be avoided. This may include controlling the release to prevent erosion of sediment deposition in downstream watercourses, and ensuring that plant and infrastructure, chemical and fuel storages are not located in the flow path of any potential discharge. Permit Environmental authority EPML00712113 - Mt Rawdon
- E16
The holder of the environmental authority must mark the mandatory reporting level defined in Table E6 on the spillway of all regulated dams within the operational land. NOTE: The mandatory reporting level may also be marked and measured within the decant pond of the regulated dam. However, the mandatory reporting level within the decant pond must be compared to the mandatory reporting level on the spillway on a regular basis to ensure accuracy.
- E17
The holder of the environmental authority must notify the administering authority when the pondage level of any regulated dam, reaches the mandatory reporting level defined in Table E6. Receiving Environment Monitoring Program (REMP)
- E18
A Receiving Environment Monitoring Program (REMP) must be implemented to meet the requirements of conditions E18 to E20. For the purposes of the REMP, the receiving environment refers to the waters of the Perry River, Burnett River, Swindon Creek, Rawdon Creek, Twelve Mile Creek and Mingham Creek and connected or surrounding waterways downstream of the mining activity.
- E19
The REMP must at a minimum: a) address and comply with the latest version of the administering authority's guideline b) encompassing the waters of Perry River, Burnett River, Swindon Creek, Rawdon Creek, Twelve Mile Creek and Mingham Creek and connected or surrounding waterways within 20km downstream of the mining activities, and where possible in tributaries on-site; and c) identify, describe and monitor any adverse impacts to surface water environmental values, quality, and flows; and d) assess the long-term condition or state of surface waters, sediment, fine sediments, DIN (Dissolved Inorganic Nitrogen) and aquatic ecosystem health; and e) include the locations listed in Table E3 monitoring locations; and f) identify and describe all environmental values of the receiving environment; and g) assess the receiving environment monitoring results against the relevant water quality guidelines for all indicators to protect all environmental values for the water as declared under an environmental protection policy or regulation; and h) include an assessment of the potential impacts of the activity and propose appropriate mitigation measures; and i) assess the status of and any change to aquatic ecosystem health including aquatic flora and fauna within and immediately surrounding the project area; and j) assess the status of and any change to riparian vegetation health within and immediately surrounding the project area; and k) apply procedures and/or guidelines from ANZG 2018 and other relevant standards and guideline documents; and l) describe sampling and analysis methods and quality assurance and control; and m) incorporate stream flow and hydrological information in the interpretations of water quality and biological data. Permit Environmental authority EPML00712113 - Mt Rawdon
- E20
A REMP Report must be prepared for any of the following and submitted to the administering authority on request: a) annually by 1August each year; and b) within one (1) month following a continuous two (2) week cessation period of any release pursuant to condition E39 or where a trigger under condition E50 has been identified or a period otherwise agreed to by the administering authority.
- E21
The REMP Report required by condition E20 must: a) be prepared by an appropriately qualified person; and b) outline the findings of the REMP, including but not limited to: i. an assessment of current and long-term upstream water quality; and ii. an assessment of the current and long-term condition or state of surface waters, sediment and aquatic ecosystem health; and iii. recommendations for further investigation or actions; and iv. recommendations for changes or improvements to the monitoring program; and v. potential changes to management of the authorised activity to minimise impacts; and vi. all monitoring results; and vii. a description of all conclusions formed. Groundwater
- E22
Contaminants are not authorised to be released directly or indirectly to any groundwater.
- E23
Groundwater must be monitored at the locations and frequencies specified in Table E7.
- E24
Groundwater in all bores specified in Table E7 must be monitored for the contaminants identified in Table E8.
- E25
Groundwater measured at any compliance bore specified in Table E7 must not exceed Limit A for any contaminant specified in Table E8 or Table E9 on any five (5) consecutive sampling occasions.
- E26
Groundwater measured at any compliance bore specified in Table E7 must not exceed Limit B for any contaminant specified in Table E8 or Table E9 on any three (3) consecutive sampling occasions. Permit Environmental authority EPML00712113 - Mt Rawdon Table E7 - Groundwater monitoring locations and frequency (`Table E7') Location (MGA94 - Zone 56) Monitoring Frequency Monitoring Point 1 Aquifer Surface RL 2 Depth RL 2 Screened Standing Ground-water (m) (m) interval RL 2 (m) Water Level Quality Easting Northing RL 2 (m) Operational Management Bores5 Tailings Storage Facility MRMB29 375255 7206291 TBA 121.14 22 Records not available MRMB45 375060 7204704 Fractured Rock 152.60 39 33-39 Monthly Quarterly MRMB46 375348 7205133 26-35 Fractured Rock 151.34 39 MRMB69 374430 7204749 Fractured Rock 135.50 36 29.5-36 Twelve Mile Creek MRMB26 376281 7205684 Records not 114.34 12 Records not Monthly Quarterly available available Waste Rock Dump MRMB60 376577 7204529 Fractured Rock 131.00 36 27-35 MRMB27 376504 7205417 Regolith 111.62 46 Records not Monthly Quarterly available MRMB25 376169 7205682 Regolith/ 115.82 48 Records not available Fractured Rock Permit Environmental authority EPML00712113 - Mt Rawdon Location (MGA94 - Zone 56) Monitoring Frequency Monitoring Point 1 Aquifer Surface RL 2 Depth RL 2 Screened Standing Ground-water (m) (m) interval RL 2 (m) Water Level Quality Easting Northing RL 2 (m) Interpretation Bore6
- E27
If groundwater measured at any compliance bore specified in Table E7 exceeds any corresponding contaminant Limit B specified in Table E8 or Table E9 on one (1) sampling occasion the environmental authority holder must: a) Resample the groundwater within the compliance bore for all exceeding contaminants within 10 business days.
- E28
Groundwater quality at operational bores specified in Table E7 must be maintained or improved. Permit Environmental authority EPML00712113 - Mt Rawdon
- E29
A bore log must be completed for each groundwater monitoring bore constructed after 1 August 2008 which includes: a) bore identification reference and geographic coordinate location; and b) specific construction information including but not limited to depth of bore, depth and length of casing, depth and length of screening and bore sealing details; and c) standing groundwater level; and d) lithological data, stratigraphic interpretation by an appropriately qualified person to identify important features associated with groundwater monitoring; and e) target formation of the bore. Note: All existing bores must have a bore drill log that meets a); and where available include information required under b), c), d) and e) of condition E29.
- E30
The construction, maintenance and decommissioning of groundwater monitoring bores must be undertaken in a manner that: a) prevents contaminants entering the groundwater; and b) ensures the integrity of the bores to obtain representative groundwater samples from the target aquifer; and c) maintains the hydrogeological environment within the aquifer. *Note: Decommissioning of groundwater monitoring bores must meet a) and c) of condition E30.
- E31
Monitoring and sampling must be carried out in accordance with the requirements of the latest version of the following documents unless otherwise approved by the administering authority: a) for waters and aquatic environments, the Queensland Government's Monitoring and Sampling Manual 2009 - Environmental Protection (Water) Policy 2009 b) for groundwater, Groundwater Sampling and Analysis - A Field Guide (2009:27 GeoCat#6890.1); c) for subterranean aquatic fauna, the Guideline for the Environmental Assessment of Subterranean Aquatic Fauna.
- E32
A Seepage Management Plan must be developed and implemented by 24 September 2018.
- E33
The Seepage Management Plan required under condition E32 must be developed by a suitably qualified person.
- E34
The Seepage Management Plan required under condition E32 must at a minimum include control measures to: a) prevent the release of seepage to groundwater in the receiving environment; and b) prevent seepage migration into surface waters.
- E35
By 22 March 2018, a Groundwater Monitoring and Management Program must be developed by an appropriately qualified person.
- E36
By 22 June 2018, the Groundwater Monitoring and Management Program required under condition E35 must be implemented. Permit Environmental authority EPML00712113 - Mt Rawdon
- E37
The Groundwater Monitoring and Management Program required by condition E35 must: a) identify potential sources, causes and extent of contaminant seepage and disturbance to groundwater from the activity; and b) ensure that all potential groundwater impacts due to the activity are identified, mitigated, and monitored in accordance with the conditions of the environmental authority; and c) ensure that adequate groundwater monitoring and data analysis is undertaken to achieve the following objectives: i. detect any impacts to groundwater levels due to the activity; and ii. detect any impacts to groundwater quality due to the activity; and iii. detect any impacts caused by contaminant seepage on surface water quality; and iv. detect and analyse short- and long-term trends in groundwater quality at operational bores at an annual frequency; and v. determine compliance with conditions E22, E23, E24, E25, E26 and E28; and d) include a review process to identify improvements to the program; and e) include an appropriate quality assurance and quality control program; and f) assess the success of the seepage management system required under conditions E32 and E34 and determine if any additional mitigation measures are required for the adequate management of seepage; and g) include a groundwater model which includes an assessment of current seepage rates and predicted post-mining seepage rates; and h) have consideration for any comments provided by the administering authority.
- E38
The Groundwater Monitoring and Management Program must be reviewed by 24 June 2019, then every 2 years by an appropriately qualified person. The review must include: a) an assessment that the Groundwater Monitoring and Management Program continues to meet the requirements stated in condition E37; and b) a review of all the historical groundwater data against the limits specified in Table E8 and Table E9; and c) a review of the ionic balance of all on site water storages including tailings storage and comparison against historical groundwater data; and d) a review of the conceptual groundwater model and details of any adjustment made. High flow releases
- E39
Water may be released via WD1 into the Perry River Dam, upstream of the weir, where the flows measured at the Perry River Weir are equal to or greater than 1m3/sec as measured through an operational flow gauging station.
- E40
Water released pursuant to condition E39 must be: a) released in a controlled manner to prevent erosion of the bed or banks of the Perry River; and b) released in a controlled manner to ensure sufficient mixing and dispersion in the Perry River.
- E41
The following information must be recorded daily for the duration of releases pursuant to condition E39 and provided to the administering authority upon request: a) the water level in WD1, WD2, WD3 and WD4; and b) contaminant monitoring results required by condition E48; and c) the volume of the release to the Perry River; and d) the background flow rate in the Perry River. Permit Environmental authority EPML00712113 - Mt Rawdon
- E42
Water released pursuant to condition E39 must be monitored for and comply with the contaminant limits and monitoring frequency specified in Table E10. Table E10 - High flow contaminant release limits (`Table E10') Contaminant Contaminant Limits Monitoring frequency parameters Flow Interpretation purposes only Continuous Electrical Conductivity 4000 uS/cm (maximum) Continuous (EC) pH (pH units) 6.0-9.0 Daily (within 2 hours of the release Interpretation purposes only starting) and every 24hrs thereafter Total Suspended Solids Interpretation purposes only Total Dissolved Solids during the release. (TDS) Sulfate Interpretation purposes only Copper1 Interpretation purposes only Zinc1 Interpretation purposes only Arsenic1 Interpretation purposes only Cadmium1 Interpretation purposes only WAD Cyanide Interpretation purposes only Dissolved Inorganic Interpretation purposes only Nitrogen (DIN) Ammonia Interpretation purposes only Total nitrogen (Nitrite and Interpretation purposes only Nitrate) 1. Total and dissolved metals must be monitored
- E43
Monitoring for the contaminants listed in Table E12 must be conducted when water is being released pursuant to condition E39 at the monitoring locations and frequencies specified in Table E11. Permit Environmental authority EPML00712113 - Mt Rawdon Table E11 - Monitoring locations and frequencies (`Table E11') Monitoring location Coordinates Monitoring frequency
- WD1
376002; For Electrical Conductivity and Upstream Perry River 7205529 pH (pH units) live monitoring for Perry River (within 1 km of 374746; 7207281 the weir) and for all other locations and parameters daily Downstream Perry River (as 378842; (within 2 hours of the release close as reasonably practical 7208200 starting) and every to the weir) Within 1km of the weir 24hrs thereafter during the Downstream Perry River release. Daily for 14 days (within 1 km of the weir) following the cessation of the release.
- E44
Water released pursuant to condition E39 must immediately cease after becoming aware of any release not in accordance with, or reasonably expected to not be in accordance with, the conditions of this environmental authority.
- E45
Stock access to the area immediately downstream of the discharge point, specified in condition E39, must be restricted until water quality objectives (total) as specified in Table E12 are complied with.
- E46
While water is released pursuant to condition E39, visual monitoring must occur twice every day to verify that discharges in the Perry River comply with the requirements of this environmental authority and records of this visual monitoring must be recorded and maintained onsite.
- E47
Water released pursuant to condition E39 must cease when flows in the Perry River falls below 1m3/s at the Perry River Weir.
- E48
The quality of receiving waters must be monitored at the locations and frequency in Table E11, for the contaminants specified in Table E12. Permit Environmental authority EPML00712113 - Mt Rawdon Table E12 - Receiving waters quality objectives (`Table E12') Water quality (mg/L unless specified otherwise) Contaminant1 Water quality objectives (totals) Water quality objectives for Perry River (dissolved) for Perry River pH (pH units)9 6.5 (minimum) or 5th percentile2 of reference sites3, whichever is higher 8.5 (maximum) or 95th percentile2 of reference sites3, whichever is lower Electrical Conductivity 1,0006 S/cm or 95th percentile2 of reference sites3, whichever is higher Total dissolved solids 60015 or 95th percentile2 of Refer to water quality objectives Sulfate (SO42-) reference sites3, whichever is (totals) Arsenic Cadmium higher Refer to water quality objectives Copper 2506 or 95th percentile2 of (totals) Zinc reference sites3, whichever is 0.0135 or 95th percentile2 of higher reference sites3 whichever is 0.054 higher 0.0054 0.00025 or 95th percentile2 of reference sites3 whichever is 0.044 higher 0.154 0.00145 or 95th percentile2 of reference sites3, whichever is higher 0.0085 or 95th percentile2 of reference sites3 whichever is higher Cyanide8 Not applicable 0.0075 Dissolved Inorganic Nitrogen No net increase from background. (DIN) Ammonia No net increase from background. Total nitrogen (Nitrite and No net increase from background. Nitrate) 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).
- E49
The contaminant concentrations measured at Table E11 "Downstream Perry River (within 1 km of the weir)" in receiving waters must not be outside the pH range or exceed the Electrical Conductivity or any total water quality objective specified in Table E12.
- E50
Should any contaminant measured at Table E11 "Downstream Perry River (within 1 km of the weir)" in receiving waters be outside the pH range or exceed the Electrical Conductivity or dissolved water quality objective specified in Table E12, the environmental authority holder must immediately cease releasing and notify the administering authority under condition E51 and additionally provide the following information in writing: a) release cessation date/time; and b) natural flow volume in receiving water; and c) volume of water released; and d) details regarding the compliance of the release with the conditions of this environmental authority (i.e., contamination limits, natural flow, discharge volume); and e) all in-situ water quality monitoring results; and f) any other matters pertinent to the water release event.
- E51
At the commencement and cessation of releasing water pursuant to condition E39, the holder of the environmental authority must notify the administering authority by written notification (via email to the pollution hotline at: pollutionhotline@detsi.qld.gov.au) within twenty-four (24) hours and must at minimum, include: a) the stream flow measured at the Perry River Weir; and b) live monitoring of Electrical Conductivity (EC) and pH (pH units) at the Downstream Perry River (within 1 km of the weir).
- E52
The holder of the environmental authority must notify the administering authority by phone call within six (6) hours, followed by written notification (via email to the pollution hotline at: pollutionhotline@detsi.qld.gov.au) within twenty-four (24) hours, after becoming aware of any release not in accordance, or reasonably expected to not be in accordance with, the conditions E39 to E51. Bioremediation wetland
- E53
The bioremediation wetland must: a) be constructed in the area identified in Schedule K Map 5 Bioremediation wetland; and b) be lined with a HDPE or clay liner that achieves the equivalent permeability of a HPDE liner: (i) sufficient to prevent the release of contaminants to land and waters from the structure; and (ii) thick enough to prevent punctures, tears, or damage from equipment used during maintenance activities. END OF SCHEDULE E Permit Environmental authority EPML00712113 - Mt Rawdon Schedule F - Biodiversity Biodiversity offsets
- F1
Significant residual impacts to prescribed environmental matters, are not authorised under this environmental authority or the Environmental Offsets Act 2014.
- F2
The offset area identified in the document Biodiversity Offsets Strategy - Mt Rawdon Operations (NRC, May 2013) must be managed in accordance with the approved Offset Area Management Plan (MRO ENV PRO 0243 Offset Area Management Plan, February 2016), so that: a) the proposed management continues to benefit the offset area; and b) where the intended management strategies are required to change, the Offset Area Management Plan is updated to reflect the required management changes and submitted for endorsement to the administering authority.
- F3
Reporting of the offset area's progress to the administering authority must occur in accordance with the reporting framework outlined in the Biodiversity Offsets Strategy - Mt Rawdon Operations (NRC, May 2013) and must ensure that it: a) reports progress of offsetting requirements. b) demonstrates whether or not the offsetting requirements are being met. c) identifies any changes to offset delivery during the reporting period; and d) is available for auditing by a third party to identify where investigation and/or compliance action is required by the department.
- F4
Impacts on State Significant Biodiversity Values, in accordance with the Biodiversity Offsets Strategy - Mt Rawdon Operations (NRC, May 2013) must not occur before the following is provided to the administering authority: a) the bank guarantee details (financial institution, account number and account name) for the holding of offset area management funds; and b) evidence that adequate management costs are held by the nominated bank guarantee, within 4 months of the environmental authority being issued. Livestock or native fauna mortalities
- F5
Livestock or native fauna mortalities in or around areas containing cyanide must be reported to the administering authority within 24 hours of observation. The report must state the probable cause of death and include actions that will be taken to prevent the likelihood of livestock or native fauna deaths in future. WAD cyanide levels at the nearest monitoring point to the deceased animal must be reported to the administering authority. Note: The intent of condition F5 is for the reporting of native fauna deaths only as a result of cyanide exposure. END OF SCHEDULE F Permit Environmental authority EPML00712113 - Mt Rawdon Schedule H - Regulated Structures
- H1
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 a) prior to the construction of the structure, if it is not an existing structure; or b) if it is an existing structure, by 23 June 2017; or c) prior to any change in its purpose or the nature of its stored contents.
- H2
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.
- H3
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 Design and construction of a regulated structure
- H4
Conditions H5 to H9 inclusive do not apply to existing structures.
- H5
All regulated structures must be designed by, and constructed under the supervision of, a suitably qualified and experienced person in accordance with the requirements of the Manual for assessing
- H6
Construction of a regulated structure is prohibited unless the environmental authority holder has submitted to the administering authority and 28 days have elapsed, the following: a) a consequence category assessment report, as required by condition H2, and b) the suitably qualified and experienced person certified design and design plan; and c) the associated suitably qualified and experienced person certified operating procedures.
- H7
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 Structures register.
- H8
Regulated structures must: a) be designed and constructed in accordance with and conform to the requirements of the Manual for b) be designed and constructed with due consideration given to ensuring that the design integrity would not be compromised on account of: i) floodwaters from entering the regulated structure from any watercourse or drainage line; and ii) wall failure due to erosion by floodwaters arising from any watercourse or drainage line. Permit Environmental authority EPML00712113 - Mt Rawdon
- H9
Certification by the suitably qualified and experienced person who supervises the construction must be submitted to the administering authority within 10 days of 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. b) construction of the regulated structure is in accordance with the design plan. Operation of a regulated structure
- H10
Operation of a regulated structure, except for an existing structure, must not commence unless the environmental authority holder has submitted to the administering authority: a) One paper copy and one electronic copy of the design plan and certification of the `design plan' in accordance with condition H7, and b) A set of `as constructed' drawings and specifications, and c) Certification of those `as constructed drawings and specifications' in accordance with condition H9, and 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) A statement that confirms: i. The requirements of this authority relating to the construction of the regulated structure have been met; ii. The details required under this authority, have been entered into a Register of Regulated Structures; and iii. There is a current operational plan for the regulated structures.
- H11
For existing structures that are regulated structures: a) where the existing structure that is a regulated structure is managed as part of an integrated containment system for the purpose of sharing the DSA volume across the system, the environmental authority holder must submit to the administering authority within three (3) 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.
- H12
Each regulated structure must be maintained and operated, for the duration of its operational life until decommissioned and rehabilitated, in a manner that is consistent with the current operational plan and, if applicable, the current design plan and associated certified `as constructed' drawings. Mandatory reporting level
- H13
Conditions H14 to H17 inclusive only apply to Regulated Structures which have not been certified as low consequence category for `failure to contain - overtopping'. Permit Environmental authority EPML00712113 - Mt Rawdon
- H14
The Mandatory Reporting Level (the MRL) specified in Table H1 must be marked on a regulated structure in such a way that during routine inspections of that structure, it is clearly observable. Note: The mandatory reporting level may also be marked and measured within the decant pond of the regulated dam. However, the mandatory reporting level within the decant pond must be compared to the mandatory reporting level on the spillway on a regular basis to ensure accuracy.
- H15
The environmental authority holder 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 structure reaches the MRL.
- H16
The environmental authority holder must, immediately on becoming aware that the MRL has been reached, act to prevent the occurrence of any unauthorised discharge from the regulated structure.
- H17
The environmental authority holder must record any changes to the MRL in Table H1 and in the Register of Regulated Structures. Design storage allowance
- H18
The environmental authority holder must assess the performance of each regulated structure or linked containment system over the preceding November to May period based on actual observations of the available storage in each regulated structure or linked containment system taken prior to 1 July of each year.
- H19
By 1 November of each year, storage capacity must be available in each regulated structure (or network of linked containment systems with a shared DSA volume), to meet the Design Storage Allowance (DSA) volume for the structure (or network of linked containment systems), as specified in Table H1.
- H20
The environmental authority holder must, as soon as possible and within forty-eight (48) hours of becoming aware that the regulated structure (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.
- H21
The environmental authority holder must, immediately on becoming aware that a regulated structure (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 structure or linked containment systems. Annual inspection report
- H22
Each regulated structure must be inspected each calendar year by a suitably qualified and experienced person.
- H23
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, if applicable, to ensure the integrity of the regulated structure.
- H24
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 Permit Environmental authority EPML00712113 - Mt Rawdon
- H25
The environmental authority 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 details of any actions being taken in response to those recommendations. Transfer arrangements
- H26
The environmental authority 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. Transitional Arrangements
- H28
All existing structures that have not been assessed in accordance with the Manual for assessing and certified in accordance with the Manual for assessing consequence categories and hydraulic Hydraulic performance of regulated structures
- H29
Each regulated structure authorised by this environmental authority as specified in Table A1 Authorised Disturbance, must meet the hydraulic performance criteria listed in Table H1 for that structure.
- H30
The hydraulic performance criteria specified in Table H1 are the minimum mandatory performance requirements; regulated structures must be managed in a manner that ensures compliance with all conditions of this environmental authority. Permit Environmental authority EPML00712113 - Mt Rawdon Table H1 - Hydraulic performance criteria (`Table H1') Name of Spillway Critical Design Design Storage Allowance2 (DSA) Mandatory Reporting Regulated Storm Capacity Level4 (MRL) Structure Consequence Category Purpose of structure Design mAHD Design Criteria mAHD Design mAHD Criteria Criteria Tailings Storage High 1:10000 year 174.0 1: 200 Year AEP 4 month wet season 172.0 1: 100 year 173.5 Tailings Storage and PAF waste Facility6 AEP plus process inputs for the 4 month AEP storage wet season Sediment Dam 3 Significant 1:1000 year 118.5 1:20 Year AEP 4 month wet season 116.6 1:10 Year 116.6 TSF Seepage Collection AEP 126.0m AEP
- WD1
Significant 119.2m 1:20 year AEP 4 month wet season 123.5 124.5 North WRD Runoff Containment 1:1000 year 125.0m 1:10 Year
- WD2
Significant AEP 133.5m 1:20 year AEP 4 month wet season 118.3 AEP 118.8 North WRD Runoff Containment 154.7m
- WD3
Significant 1:1000 year 1:20 year AEP 4 month wet season 124.2 1:10 Year 124.7 North WRD Runoff Containment AEP AEP
- WD4
Significant 1:20 year AEP 4 month wet season 132.3 133.0 North WRD Runoff Containment Significant 1:1000 year 1:10 Year Process Water AEP 1:20 year AEP 4 month wet season N/A AEP N/A Process Water Buffer Storage Pond 1:1000 year 1:10 Year AEP AEP 1:1000 year 1:10 Year AEP AEP South Dam Significant 1:100 year AEP 146.5m 1:20 year AEP 4 month wet season 145.7 1:10 Year 145.9 Process Plant Runoff, Containment AEP 121.5 of Pit Dewatering, and TSF Seepage West Dam Significant 1:1000 year 122.5m 1:20 year AEP 4 month wet season 120.3 AEP 1:10 Year West WRD Runoff Containment, AEP Containment of Pit Dewatering Permit Environmental authority EPML00712113 - Mt Rawdon NOTE: AEP means Annual Exceedance Probability - being the probability that at least one event as specified will occur in a particular year. 1 Calculations are to be carried out in accordance with the guideline titled Site Water Management within the Technical Guidelines for Environmental Management of Exploration and Mining in Queensland (DME 1995). 2 The design storage allowance on 1st November of each year for any regulated dam constructed within the operational land must be sufficient to contain the run-off from the critical wet period - plus the volume of any other inputs to the storage facility during that critical wet period, as part of operations. Such inputs could be tailings, contaminated site waters, process waters, and any other materials. 3 The critical storm has a duration that produces the peak discharge for the catchment. 4 The level below spillway crest that can accommodate runoff from a 72 hour storm at the specified AEP, or the wave allowance at the specified AEP - whichever level is lower 5 TSF is approved for Stage 5 Life of Mine lifts, Stages 5A to 5F, with a final lift approval to RL193.0m END OF SCHEDULE H Permit Environmental authority EPML00712113 - Mt Rawdon Schedule I - Water reuse
- I1
Mine affected water may be: (a) released via WD1 for the purpose of supplying irrigation to the designated irrigation areas identified as A, B and C in Schedule K Map 4 Designated irrigation areas; or (b) otherwise provided to a third party, where there is written consent of the third party that meets the requirements of condition I3.
- I2
Mine affected water may be piped or trucked or transferred by some other means that does not contravene the conditions of this environmental authority and used directly at properties owned by the environmental authority holder or a third party for the purpose of supplying irrigation water, or another use, subject to conditions I1 to I13.
- I3
Where the responsibility for mine affected water is given or transferred to another person, the responsibility for the mine affected water must only be given or transferred in accordance with a written agreement (the third party agreement) that: a) clearly articulates each parties responsibilities and obligations to ensure compliance with all conditions of Schedule I; and b) includes a commitment from the person utilising the mine affected water to use it in such a way as to prevent environmental harm or public health incidents and specifically make the persons aware of the General Environmental Duty (GED) under s. 319 of the Environmental Protection Act 1994, environmental sustainability of the water disposal, protection of environmental values of waters and ensure it is fit for purpose in accordance with any other relevant legislation; and c) must be signed by both parties to the agreement.
- I4
The giving, transferring and application of mine affected water must cease immediately upon notification or otherwise becoming aware that: a) the use of mine affected water is causing or threatens to cause environmental harm, b) is posing a human health risk, c) is not compliant with the conditions of this environmental authority.
- I5
Mine affected water released pursuant to condition I1(a), must be monitored for and comply with the contaminant limits and monitoring frequency specified in Table I1. Permit Environmental authority EPML00712113 - Mt Rawdon Schedule I - Mine Affected Water Release Limits (`Table I1') Release location Contaminant Contaminant Limits Frequency parameters Weekly in-situ.
- WD1
Electrical Conductivity Maximum 5000 -S/cm Monthly. (Location: 376002; (EC) pH 6 to 8.5 7205529) Sodium Adsorption Ratio (SAR) Maximum 15 Total nitrogen Total phosphorus Maximum 25 mg/L1 Aluminium Maximum 5 mg/L1 Arsenic Maximum 20 mg/L1 Maximum 2.0 mg/L1 Boron Refer to Table 9.2.18 of Cadmium ANZECC1 Copper Maximum 0.05 mg/L1 Fluoride Maximum 5.0 mg/L1 Iron Maximum 2.0 mg/L1 Lead Maximum 10.0 mg/L1 Manganese Maximum 5.0 mg/L1 Molybdenum Maximum 10.0 mg/L1 Zinc Maximum 0.05 mg/L1 Maximum 5.0 mg/L1 1. Australian and New Zealand Guidelines for Fresh and Marine Water Quality (Volume 3), Primary Industries -- Rationale and Background Information (Chapter 9), Irrigation and general water uses, stock drinking water, aquaculture and human consumers of aquatic foods, October 2000. Permit Environmental authority EPML00712113 - Mt Rawdon
- I6
Mine affected water released pursuant to I1(a), must: a) not occur if the soil is saturated; and b) use soil moisture meters for irrigation scheduling; and c) be carried out based on the estimated irrigation demand (crop water requirement or based on soil moisture deficit plus leaching requirement) or based on soil moisture deficit in the irrigation areas; and d) not exceed 50mm hydraulic loading (500kL/ha) per irrigation event; and e) not occur if the groundwater level rises to 1 meter from the soil surface; and f) not be undertaken within 10m of any natural creek.
- I7
Mine affected water released pursuant to I1(a), must be carried out in a manner such that: (a) water is evenly distributed using appropriate irrigation equipment/hardware; and (b) vegetation is not damaged; and (c) designated irrigation areas are maintained with an appropriate crop in a viable state for transpiration; and (d) soil erosion and soil structural damage is avoided; and (e) there is no surface ponding or runoff of irrigated mine affected water; and (f) add calculated leaching fraction to irrigation to leach down salts from the rootzone; and (g) deep percolation to groundwater and subsurface flows of contaminants to surface waters are minimised; and (h) Soil salinity (ECse) does not exceed crop's tolerance limit; and (i) Soil sodicity (ESP) does not significantly increase from the background; and (j) irrigation application does not exceed the irrigation demand; and (k) irrigation application rate does not exceed basic infiltration rate of the soil; and (l) the capacity of the land to assimilate nitrogen, phosphorous, salts, and moisture is not exceeded; and (m) the quality of ground water or surface water is not adversely affected; and (n) sodicity in the soil is controlled via appropriate soil amelioration (e.g. gypsum); and (o) the build-up of nutrient and heavy metals in the soil and subsoil from irrigated effluent and other sources is controlled.
- I8
The daily volume of mine affected water released to land must be measured and records kept of the volumes of mine affected water released. Permit Environmental authority EPML00712113 - Mt Rawdon Irrigation Management and Monitoring Program
- I9
The holder of this environmental authority must develop, implement and maintain an irrigation management and monitoring program (IMMP) to meet the requirements of conditions I9 to I12 and to evaluate the impacts of the release of contaminants to the receiving environment, including but not limited to: (a) surface water; and (b) groundwater (including but not limited to sub-surface groundwater); and (c) soils and sub soils; and (d) vegetation and nutrient export. For the purposes of the IMMP, the receiving environment refers to the designated irrigation areas identified as A, B and C in Schedule K Map 4, waters of twelve Mile Creek and connected or surrounding waterways downstream of the mining activity.
- I10
An IMMP required by condition I9 must be developed in the form specified by the administering authority and at minimum: a) address and comply with the latest version of the administering authority's guideline Disposal of effluent using irrigation Technical guideline and b) identify and describe all environmental values of the receiving environment; and c) identify, describe and monitor any adverse impacts to groundwater and surface water environmental values, quality, and flows; and d) identify, describe and monitor any adverse impacts to land, soils or sub soil environmental values and quality; and e) assess any short term or long-term condition or state of surface waters, groundwater, land, soils, sub soils, vegetation and nutrient health; and f) assess the receiving environment monitoring results against the relevant water quality guidelines for all indicators to protect all environmental values for the water as declared under an environmental protection policy or regulation; and g) assess the receiving environment monitoring results against the relevant background conditions for all indicators to protect all environmental values for the land as declared under an environmental protection policy or regulation; and h) include an assessment of the potential impacts of the activity and propose appropriate mitigation measures; and i) assess the status of and any change to environmental values health within and immediately surrounding the designated irrigation areas; and j) assess the status of and any change to riparian vegetation health within and immediately surrounding the designated irrigation areas; and k) describe sampling and analysis methods and quality assurance and control in accordance with DES (2018) Monitoring and Sampling Manual.
- I11
An IMMP Report must be prepared annually by 1 August each year and submitted to the administering authority on request. Permit Environmental authority EPML00712113 - Mt Rawdon
- I12
The IMMP Report required by condition I11 must: c) be prepared by an appropriately qualified person; and d) outline the findings of the IMMP, including but not limited to: i. an assessment of the current and long-term condition or state of environmental values of the receiving environment including soil; and ii. maintain soil sustainability and non-pollutive conditions; and iii. recommendations for further investigation or actions; and iv. recommendations for changes or improvements to the monitoring program; and v. potential changes to management of the authorised activity to minimise impacts; and vi. all monitoring results; and vii. a description of all conclusions formed; and viii. recommendations for rehabilitation if necessary; and ix. recommendations outlining if supplying irrigation to the designated irrigation areas can sustainably continue. x.
- I13
Water reuse permitted under condition I1 must not exceed a two-year period, from the commencement date of the first irrigation event. End of Schedule I Permit Environmental authority EPML00712113 - Mt Rawdon Schedule J - Definitions Key terms and/or phrases used in this document are defined in this section and bolded throughout this document. Applicants should note that where a term is not defined, the definition in the Environmental Protection Act 1994, its regulations or environmental protection policies must be used. If a word remains undefined it has its ordinary meaning. Word / Phrase Definition Acid rock drainage Means any contaminated discharge emanating from a mining activity formed through a series of chemical and/or biological reactions. Administering Is the agency that administers the environmental authority provisions under the authority Environmental Protection Act 1994. 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 (dB). Annual exceedance The probability that at least one event in excess of a particular magnitude will occur probability or AEP in any given year. Annual inspection means an assessment prepared by a suitably qualified and experienced person report 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. Appropriately qualified Means a person who has professional qualifications, training, skills or experience person relevant to the nominated subject matter and can give authoritative assessment, advice and analysis on performance relating to the subject matter using the relevant protocols, standards, methods or literature. Assessed or By a suitably qualified and experienced person in relation to a consequence assessment 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