metro mining appendix h2 - metro mining community and ... · table 20-9 schedule f – table 3...

29
Environmental Impact Statement Metro Mining Chapter 20 - Draft EA Conditions

Upload: others

Post on 19-Jul-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Metro MiningBauxite Hills Project

Environmental Impact Statement

Metro MiningChapter 20 - Draft EA Conditions

Environmental Impact Statement

Metro MiningAppendix H2 - Metro Mining Community andSocial Responsibility Policy

Page 2: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule
Page 3: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

i

Table of Contents

20 Draft EA Conditions .......................................................................................................................... 20-1

20.1 Project Overview ................................................................................................................................. 20-1 20.2 Proposed Conditions ......................................................................................................................... 20-2

20.2.1 Environmental Authority Holders ........................................................................................ 20-2 20.2.2 Mining Leases ................................................................................................................................. 20-2 20.2.3 Environmentally Relevant Activity and Location Details ........................................... 20-3 20.2.4 Schedule A – General Conditions ........................................................................................... 20-3 20.2.5 Schedule B – Air ............................................................................................................................ 20-6 20.2.6 Schedule C - Waste Management........................................................................................... 20-7 20.2.7 Schedule D – Noise and Vibration ......................................................................................... 20-9 20.2.8 Schedule E - Groundwater ...................................................................................................... 20-10 20.2.9 Schedule F – Water .................................................................................................................... 20-13 20.2.10 Schedule G – Sewage Treatment ....................................................................................... 20-20 20.2.11 Schedule H – Land and Rehabilitation ............................................................................ 20-21

List of Figures

Figure 20-1 Project infrastructure layout .................................................................................................... 20-24 Figure 20-2 Groundwater monitoring bore locations .................................................................................. 20-25 Figure 20-3 Surface water monitoring locations.......................................................................................... 20-26

List of Tables

Table 20-1 Proposed Environmental Authority holder details ...................................................................... 20-2 Table 20-2 Mining leases subject to the Environmental Authority ............................................................... 20-2 Table 20-3 Environmentally Relevant Activities subject to the Environmental Authority............................. 20-3 Table 20-4 Schedule B – Table 1 Air criteria (Dust and particulate matter criteria) ...................................... 20-6 Table 20-5 Schedule E – Table 1 Groundwater quality and level monitoring locations and frequency ...... 20-10 Table 20-6 Schedule E – Table 2 Groundwater quality triggers and limits .................................................. 20-12 Table 20-7 Schedule F – Table 1 Receiving waters and environmental monitoring locations and frequency –

Freshwater and wetlands ............................................................................................................................ 20-13 Table 20-8 Schedule F – Table 2 Receiving waters and environmental monitoring locations and frequency –

Marine and estuarine waters ....................................................................................................................... 20-14 Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .......................... 20-14 Table 20-10 Schedule F – Table 4 Contaminant trigger levels – Marine and estuarine waters ................... 20-15 Table 20-11 Schedule G – Table 1 Contaminant releases to land ................................................................ 20-20 Table 20-12 Schedule H – Table 1 Rehabilitation Requirements ................................................................. 20-21

Page 4: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

20-1

20 Draft EA Conditions

This chapter sets out the substantive obligations which Metro Mining envisages may be contained

within the Project’s draft Environmental Authority (EA). The presentation of the following EA

conditions is intended to assist with the process of developing appropriate EA conditions for the

Project in consultation with the Department of Environment and Heritage Protection (EHP). This

chapter does not attempt to replace or replicate the Notice of Decision stage of the EA application

process under Chapter 5, Division 3, subdivision 2 of the Environmental Protection Act 1994 (EP Act).

EHP determines an application for a mining project EA in accordance with the requirements of the

Environmental Protection Act 1994 (EP Act) with consideration to its Regulatory Strategy and model

mining conditions (EM944) respectively.

The Regulatory Strategy provides for EHP’s operational delivery. This established the onus of

environmental management and compliance on mining EA permit holders, with EHP focussing

largely on compliance monitoring backed up by appropriate enforcement or stopping activities

where compliance is not met.

The Model Mining Conditions and Model Conditions for Structures provide a basis for proposing

environmental protection commitments in EA application documents. The Model Mining Conditions

guideline acknowledges that assessment and conditioning must be based on the specific

circumstances for each project. The guideline allows for modification of the Model Mining

Conditions to tailor for site-specific conditions and project circumstances.

The proposed conditions presented within this chapter have been derived to address the

anticipated impacts of the Project and are developed to be measurable and auditable. Where

alterations or alternative conditioning, from the Model Mining Conditions has been proposed to

account for Project specific circumstances, an explanatory box has been provided beneath the

condition. The box explains the change and provides reasoning for the alteration. For ease of

application and review the proposed EA conditions have been structured as per the EM994 and

EM634 guidelines.

20.1 Project Overview

Aldoga Minerals Pty Ltd (Aldoga), a 100% owned subsidiary of Metro Mining Limited (Metro

Mining), proposes to develop the Project located on a greenfield site on the western coastline of

Cape York, Queensland, approximately 35 kilometres (km) northeast of Mapoon. The Project will

include an open cut operation, haul roads, Barge Loading Facility (BLF), Roll on/Roll off (RoRo)

facility, transhipping and will produce and transport up to 5 million tonnes per annum (Mtpa) of ore

over approximately 12 years. The mine will not be operational during the wet season.

The Project is characterised by several shallow open cut pits that will be connected via internal haul

roads. The internal haul roads will be connected to a main north-south haul road that will link with

the Mine Infrastructure Area (MIA), BLF and RoRo facility located to the north of the pits on the

Skardon River. Bauxite will be screened in-pit and then hauled to the product stockpile using road

train trucks.

Bauxite from the Project is suitable as a Direct Shipping Ore (DSO) product (i.e. ore is extracted and

loaded directly to ships with no washing or tailings dams required). Bauxite will be transported by

barge via the Skardon River to the transhipment site, approximately 12 km offshore, and loaded into

Page 5: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-2

ocean going vessels (OGVs) and shipped to customers. No dredging or bed-levelling for transhipping

is proposed as part of this Project.

OGVs of between 50,000 to 120,000 tonne (t) each will be loaded at the transhipment anchorage

site. Vessels will be loaded and bauxite will be transported to OGVs 24 hours per day with barges

having an initial capacity of approximately 3,000 t to meet early production volumes, increasing up

to 7,000 t as the Project reaches a maximum production volume of 5 Mtpa.

The construction of the mine is due to commence in April 2017 and is expected to take seven months

to complete. The first shipment of bauxite is planned for October 2017. The Project will be 100%

fly-in fly-out (FIFO) due to its remote location. The Project will operate over two 12 hour shifts per

day for approximately eight months of the year and is expected to employ up to 254 employees

during peak operations. In addition to the workforce, it is expected that the Project will result in the

employment of additional workers through local and regional businesses servicing the

accommodation camp and the construction and operation of the mine.

20.2 Proposed Conditions

20.2.1 Environmental Authority Holders

The details of the proposed Environmental Authority are shown in Table 20-1.

Table 20-1 Proposed Environmental Authority holder details

Permit Holder Name Registered Address

Principal Holder Aldoga Minerals Pty Ltd

ACN 102 192 585 Level 8, 300 Adelaide St

Brisbane QLD 4000

20.2.2 Mining Leases

The mining leases that will be subject to this Environmental Authority are described at Table 20-2.

Table 20-2 Mining leases subject to the Environmental Authority

Mining Lease Activities

MLA 20676 BH 1 extraction area and internal access roads

MLA 20688 BH 6 East extraction area, workers camp and internal access roads

MLA 20689 BH 6 West extraction area and internal access roads

MLA 100051 Mine infrastructure area and barge loading facilities1

MLA 100047 Port haul road

MLA 100048 BH1 haul road

1 The marine environment is covered for the barge loading facilities within the Project MLA boundaries only.

Page 6: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-3

20.2.3 Environmentally Relevant Activity and Location Details

Environmentally Relevant Activities subject to this Environmental Authority are described at Table

20-3.

Table 20-3 Environmentally Relevant Activities subject to the Environmental Authority

Environmentally relevant activities Location

ERA 8 (1) (c) Chemical storage – Storing 500 m3 or more of chemicals of class C1 or C2 combustible liquids under AS 1940 or dangerous goods class, with an AES of 85.

MLA 100051

ERA 33 (1) – Crushing, milling, grinding or screening more than 5,000 t in a year. MLA 20676 MLA 20688 MLA 20689

ERA 63 (1) (a) Sewerage Treatment – Operation of a sewerage treatment works with a total daily peak capacity of at least 21 equivalent persons; or operating a sewage pumping station with total design capacity of more than 40 KL in an hour, with AES of 27 (100 to 1500 equivalent persons with treated effluent discharged through an irrigation scheme).

MLA 20688

The following are proposed conditions for the Project Environmental Authority.

These proposed conditions will be further developed and finalised in consultation with DEHP during

the evaluation and consideration of the information provided through this environmental impact

assessment process.

20.2.4 Schedule A – General Conditions

General

(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 layout described in Figure 20-1.

(A3) All reasonable and practicable measures must be taken to prevent or minimise environmental

harm caused by the activities.

Monitoring

(A4) All records must be kept for a period of at least five years and provided to the administering

authority upon request.

(A5) All analyses required under this environmental authority must be carried out by a laboratory

that has National Association of Testing Authorities (NATA) certification, or an equivalent

certification, for such analyses, except as otherwise authorised by the administering authority.

Financial assurance

(A6) Provide a financial assurance in the amount and form required by the administering authority

prior to the commencement of activities proposed under the environmental authority.

NOTE: The calculation of financial assurance must be in accordance with the Queensland Government’s latest

financial assurance calculation guidelines.

Page 7: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-4

(A7) The financial assurance is to remain in force until the administering authority is satisfied that

no claim on the assurance is likely.

Risk management

(A8) 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.

Notification of emergencies, incidents and exceptions

(A9) The holder of this environmental authority must notify the administering authority by written

notification within 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.

(A10) Within 10 business days following the initial notification of an emergency 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

(A11) The holder of this environmental authority must record all environmental complaints

received about the mining activities including:

a. Name, address and contact number for 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.

(A12) 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.

Page 8: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-5

Third-party reporting

(A13) The holder of this environmental authority must:

a. Within one year of the commencement of this environmental authority, 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.

(A14) The holder of this environmental authority must promptly respond to any findings arising

from the audit and implement measures or take necessary action to ensure compliance with the

conditions of this environmental authority.

Transition to New Standards

(A15) Where a condition requires compliance with a standard published externally to this

environmental authority and the standard is amended or changed subsequent to issue, the holder

of this environmental authority must, unless otherwise agreed with the administering authority:

a. Comply with the amended or changed standard within two years, unless a different period

is specified in the amended standard or relevant legislation; and

b. Until compliance with the amended or changed standard can be achieved, continue to

remain in compliance with the standard that was current immediately prior to the relevant

amendment or change.

Maintenance of measures, plant and equipment

(A16) The holder must:

a. Install measures, plant and equipment necessary to ensure compliance with the conditions

of this environmental authority, and

b. Maintain such measures, plant and equipment in proper condition, and

c. Operate such measures, plant and equipment in a proper manner.

(A17) No change, replacement or alteration of any plant or equipment is permitted without

administering authority approval, if the change, replacement or alteration increases or is likely to

increase the risk of environmental harm caused by mining activities.

(A18) Any plant and equipment must be designed, operated and maintained in accordance with the

relevant Australian Standard.

Storage and handling of chemicals, waste oils, flammable and combustible liquids

(A19) Spillage of all chemicals, waste oils and flammable liquids must be contained within an on-

site containment system and controlled in a manner that prevents environmental harm (other than

trivial harm) and maintained in accordance with AS 1940-2004 - The storage and handling of

flammable and combustible liquids.

Page 9: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-6

(A20) All piping and infrastructure associated with the loading and unloading of petroleum

products must be designed, constructed and maintained in accordance with AS 1940-2004 - The

storage and handling of flammable and combustible liquids.

20.2.5 Schedule B – Air

Dust nuisance

(B1) Subject to Conditions (B2) and (B3) the release of dust or particulate matter or both resulting

from the mining activity must not cause an environmental nuisance, at any sensitive place.

(B2) When requested by the administering authority, dust and particulate 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

place, and the results must be notified within 14 days to the administering authority following

completion of the monitoring.

(B3) If the environmental authority holder can provide evidence through monitoring that the limits

identified in Table 20-4 are not being exceeded then the holder is not in breach of Condition (B1).

Table 20-4 Schedule B – Table 1 Air criteria (Dust and particulate matter criteria)

Pollutant Averaging Period Air Quality Objective

(µg/m3)

Number of days of

exceedance allowed per

year

TSP Annual 90 N/A

PM10 24-hour 50 5

PM2.5 24-hour 25 N/A

1-year 8 N/A

Dust deposition Maximum monthly

average

120mg/m2/day N/A

(B4) If monitoring indicates exceedance of the relevant limits in Condition (B3), then the

environmental authority holder must:

a. Address the complaint including the use of appropriate dispute resolution if required; or

b. Immediately implement dust abatement measures so that emissions of dust from the

activity do not result in further environmental nuisance.

Odour nuisance

(B5) Subject to condition (B6), the release of noxious or offensive odour(s) or any other noxious or

offensive airborne contaminant(s) resulting from the mining activity must not cause an

environmental nuisance at any sensitive place.

(B6) When requested by the administering authority, odour 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 place, and the results must be

notified within 14 days to the administering authority following completion of the monitoring.

(B7) If monitoring indicates Condition (B5) is not being met then the environmental authority

holder must:

Page 10: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-7

a. Address the complaint including the use of appropriate dispute resolution if required; or

b. Immediately implement odour abatement measures so that emissions of odour from the

activity do not result in further environmental nuisance.

Light

(B8) In the event of a complaint about light emissions from any mining activity that, after

investigation is in the opinion of an authorised person causing a nuisance at a sensitive place, the

administering authority may request the holder of this environmental authority to take appropriate

action to mitigate the nuisance and the holder must take appropriate action (e.g. by screening or

directing the light away from the sensitive place) within a time set by the administering authority.

20.2.6 Schedule C - Waste Management

(C1) The holder of the environmental authority will implement a waste management program prior

to mining which will include:

a. A description of the mining activities that may generate waste;

b. Identification and implementation of waste management control strategies including:

i. The types and amounts if wastes generated by the mining activities

ii. Segregation of the wastes

iii. Storage of the wastes

iv. Transport of the wastes

v. Monitoring and reporting matters concerning the waste.

c. Identification and management of the hazardous characteristics of the wastes generated

including disposal procedures for hazardous wastes;

d. Implementation of a program for reusing, recycling or disposing of all wastes;

e. Identification of 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 (that is

avoidance, reuse, recycling energy recovery, and disposal);

f. Implementation of procedures for identifying and maximising opportunities to reduce

waste generation, promote efficiency in the use of resources and improve the waste

management practices employed;

g. Implementation of procedures for dealing with accidents spills and other incidents;

h. Identification of any accredited management system employed or planned to be employed,

to deal with waste;

i. Description of how often the performance of the waste management program will be

assessed;

Page 11: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-8

j. Description of the indicators or other criteria on which the performance of the waste

management program will be assessed; and

k. Identification of staff training and induction processes for the waste management program.

(C2) Records of the volumes and type of waste delivered offsite must be kept and maintained and

made available for inspection upon request by the administering authority.

Waste disposal

(C3) Wastes must not be deposited into water.

(C4) General waste must only be disposed of offsite to existing licenced waste disposal facility/s.

Regulated waste loading and unloading

(C5) All loading and unloading of liquid regulated wastes must only take place in bunded areas

capable of containing and allowing the recovery of any spillage.

(C6) The holder of this environmental authority must ensure that sufficient equipment is available

for the containment and recovery of spillages of liquid regulated waste.

Mixing of regulated wastes

(C7) The holder of this environmental authority must not cause or permit the mixing of

incompatible regulated wastes.

Movement of regulated wastes

(C8) All regulated waste must be removed from the site such that:

a. The removal and transport of such wastes, where it constitutes an environmentally relevant

activity under the Environmental Protection Regulation 2008, is carried out by a person

licensed for carrying out this activity to a facility that is lawfully able to accept the waste

under the Environmental Protection Act 1994; and

b. Records are kept of the following:

i. the date, quantity and type of waste removed

ii. name of the regulated waste transporter(s) 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 condition.

(C9) All vehicles (including load areas), containers and secondary containers used to transport

regulated waste must be:

a. Maintained in a proper and efficient condition at all times to prevent spillage or leakage of

waste;

b. Kept clean at all times whilst regulated waste is not being transported; and

c. Mounted securely, sealed and maintained in a condition that will prevent spillage or leakage

of the waste.

Page 12: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-9

(C10) Each container of regulated waste stored awaiting movement off site must be clearly marked

to identify the contents.

Burning of waste

(C11) Unless otherwise permitted by the conditions of this environmental authority or with prior

approval from the administering authority and in accordance with a relevant standard operating

procedure, waste must not be burnt.

(C12) The holder of this environmental authority may burn vegetation cleared in the course of

carrying out mining activities provided the activity does not cause environmental harm at any

sensitive place or commercial place.

Storage of tyres

(C13) Tyres stored awaiting disposal or transport for take back and recycling or waste to energy

options should be stockpiled in volumes less than 3m in height and 200m2 in area and at least 10m

from any other tyre storage area.

(C14) All reasonable and practicable fire prevention measures must be implemented, including

removal of grass and other materials within a 10m radius of the scrap tyre storage area.

Waste oil storage

(C15) Waste oil may be temporarily stored for a period no longer than six months in drums or other

containers provided that the drums or containers are:

a. Stored in a covered area designated for this purpose;

b. Bunded to contain spillages and leakages; and

c. Securely sealed when full to prevent spillage.

Disposal of clinical waste

(C16) Clinical waste must be stored in a designated area on site until there are sufficient to be

collected by a licensed waste contractor for disposal or recycling off-site.

20.2.7 Schedule D – Noise and Vibration

Noise limits

(D1) Noise from mining activities must not cause a nuisance to any sensitive receptor as defined in

the EPP (Noise).

(D2) When requested by the administering authority, noise monitoring must be undertaken within

a reasonable and practicable timeframe nominated by the administering authority to investigate

any complaint related to noise (which is neither frivolous nor vexatious nor based on mistaken

belief in the opinion of the authorised officer) at any sensitive or commercial place, and the results

must be notified within 14 days to the administering authority following receipt of final monitoring

report.

Page 13: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-10

Piling

(D3) A piling program will incorporate the following mitigation measures (as required) to reduce

the potential for adverse impacts on marine fauna (dolphins, turtles, dugong) from piling noise:

a. Piling noise attenuation by appropriate engineering measures will be used where

practicable;

b. Correct specifications of piles and the pile driver for the proposed construction works will

be used to avoid excessive energy requirements to achieve pile penetration;

c. A 500 m safety exclusion zone will be established around piling works;

d. Piling will be overseen by a suitably qualified operator and piling will cease in the event that

marine mammals or turtles are seen to enter the 500 m safety exclusion zone, and will not

recommence until the fauna move out of the exclusion zone;

e. All impact and vibratory piling works will adopt a soft start approach;

f. If soft start approaches are not practically feasible for operational reasons, then an acoustic

deterrence device will be used to allow marine fauna to leave the area prior to

commencement of full piling; and

g. Marine-based pile driving activities will take place during daylight hours.

20.2.8 Schedule E - Groundwater

(E1) The holder of this environmental authority must not release contaminants to groundwater that

causes material or serious environmental harm.

NOTE: Condition E1 has been amended to relate to environmental harm. In accordance with the Model Mining

Conditions, groundwater release points, frequency and quality have been excluded from the proposed draft

conditions. The Project does not propose any releases to groundwater.

(E2) All determinations of groundwater quality and biological monitoring must be performed by an

appropriately qualified person.

(E3) Groundwater quality and levels must be monitored at the locations and frequencies defined in

Table 20-5 and shown in Figure 20-2 for the parameters outlined in Table 20-6.

Note: Preliminary WQOs are provided in Table 20-6 and are based AWQG – 99% trigger values, AWQG – aquaculture

and model mining conditions and site data where no published trigger values are available. Additional and ongoing

sampling will be undertaken to derive site specific local WQOs for the 20th, 50th and 80th percentiles.

Table 20-5 Schedule E – Table 1 Groundwater quality and level monitoring locations and frequency

Monitoring Point

Location Monitoring Frequency

Monitoring Latitude Longitude Details

Reference Bores

BGWMB-1 -11.771154 142.042481 To the north between MLA 20689 and the Skardon River

Quarterly for complete suite of analytes.

Water levels recorded with continuous logger; Sampling and laboratory testing.

BGWMB-2 -11.821254 142.104751 To the south of MLA 20676 and Irish Creek

Water levels recorded with continuous logger; Sampling and laboratory testing.

Page 14: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-11

Monitoring Point

Location Monitoring Frequency

Monitoring Latitude Longitude Details

Compliance Bores

GWMB-1 -11.793650 142.124944 In the eastern section of MLA 20676

Continuous depth and basic quality parameters. Quarterly for complete suite of analytes.

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-2 -11.804795 142.105284 On the southern boundary and outside the mining area in MLA 20676

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-3 -11.803254 142.087509 In the western section of MLA 20676

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-4 -11.824381 142.057523 Within the northern section of MLA 20688

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-5 -11.843492 142.034033 Within the southern section MLA 20689 and outside the mining area

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-6 -11.797117 142.045836 Within the northern section of MLA 20689 near Big Footprint Swamp

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-7 -11.791712 142.120745 In the eastern section of MLA 20676

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-8 -11.806205 142.106236 On the southern boundary and outside the mining area in MLA 20676 near Irish Creek

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWBM-9 -11.807062 142.080959 On the western boundary and outside the mining area in MLA 20676

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-10 -11.833397 142.060150 On the eastern boundary and the mining area in MLA 20688 adjacent to a tributary of Irish Creek

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB-11 -11.798761 142.043050 On the western boundary and outside the mining area in the northern section of MLA 20689 near Big Footprint Swamp

Water levels recorded with continuous logger; Sampling and laboratory testing.

Page 15: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-12

Monitoring Point

Location Monitoring Frequency

Monitoring Latitude Longitude Details

GWMB - 12 -11.79298 142.08584 Outside the mining area, near the southern boundary of Big Footprint Swamp

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB - 13 -11.80963 142.04404 Outside the mining area, near the western boundary of Big Footprint Swamp

Water levels recorded with continuous logger; Sampling and laboratory testing.

GWMB - 14 -11.80560 142.03133 Outside the mining area on the northern boundary of MLA 20676

Water levels recorded with continuous logger; Sampling and laboratory testing.

Table 20-6 Schedule E – Table 2 Groundwater quality triggers and limits

Parameter Unit Preliminary WQO Source

Electrical conductivity (EC) µS/cm 125 – 606 Site data (20th and 80th percentiles

based on n = 31)

Turbidity NTU 40 – 191 Site data (20th and 80th percentiles

based on n = 9)

pH pH 4.42 – 5.66 Site data (20th and 80th percentiles

based on n = 31)

TSS (total suspended solids) mg/L 30 Model Mining Conditions

Dissolved oxygen % saturation 1.8 – 45.3 Site data (20th and 80th percentiles

based on n = 14)

Chemical oxygen demand mg/L 40 AWQO – aquaculture

Biochemical oxygen demand µg/L 15 AWQO – aquaculture

Total phosphorus mg/L 0.7 – 0.97 Site data (20th and 80th percentiles

based on n = 34)

Total nitrogen mg/L 0.2 – 1.9 Site data (20th and 80th percentiles

based on n = 34)

NH3+ (ammonia) µg/L 900 Model Mining Conditions

Nitrate Nitrogen (N02) µg/L 100 AWQO – aquaculture

Aluminium (dissolved / total) µg/L 27 AWQO – 99%

Arsenic III (dissolved / total) µg/L 1 AWQO – 99%

Boron (dissolved / total) µg/L 90 AWQO – 99%

Cadmium (dissolved / total) µg/L 0.06 AWQO – 99%

Chromium (VI) (dissolved / total) µg/L 0.01 AWQO – 99%

Cobalt (total and dissolved) µg/L 90 Model Mining Conditions

Copper (dissolved / total) µg/L 1 AWQO – 99%

Iron (dissolved / total) µg/L 300 Model Mining Conditions

Lead (dissolved / total) µg/L 1 AWQO – 99%

Manganese (dissolved / total) µg/L 1200 AWQO – 99%

Mercury (dissolved total) µg/L 0.06 AWQO – 99%

Molybdenum (total and dissolved) µg/L 34 Model Mining Conditions

Nickel (dissolved / total) µg/L 8 AWQO – 99%

Selenium (dissolved) µg/L 5 AWQO – 99%

Vanadium (dissolved) µg/L 10 Model Mining Conditions

Zinc (dissolved / total) µg/L 2.4 AWQO – 99%

Petroleum hydrocarbons (C6-C9) µg/L 20 Model Mining Conditions

Petroleum hydrocarbons (C10-C36) µg/L 100 Model Mining Conditions

Page 16: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-13

Exceedance Investigation

(E4) If quality characteristics of groundwater from compliance bores identified in Table 20-5 exceed

any of the trigger levels stated, the holder of this environmental authority must complete an

investigation in accordance with the ANZECC and ARMCANZ 2000.

Bore construction and maintenance and decommissioning.

(E5) The construction, maintenance and management of groundwater bores (including

groundwater monitoring bores) must be undertaken in a manner that prevents or minimizes

impacts to the environment and ensures the integrity of the bores to obtain accurate monitoring.

20.2.9 Schedule F – Water

Contaminant Release

(F1) Contaminants that will, or have the potential to cause environmental harm must not be

released directly or indirectly to any waters as a result of the authorised mining activities, except as

permitted under the conditions of this environmental authority.

Receiving waters and water quality parameters

(F2) Receiving waters affected by the release of water from storm water contaminated by the

mining activities (bauxite mining) must be monitored at the locations and frequencies defined in

Table 20-7 and Table 20-8 and shown at Figure 20-3 and comply with the interim contaminant

trigger limits defined in Table 20-9 and Table 20-10 for marine / estuarine waters, respectively.

Note that the interim trigger values will be progressively updated prior to construction and

operation as additional water quality data are collected during monitoring events.

Metro mining does not propose to release waters to freshwater or wetland receiving waters. As such

no release point monitoring locations are nominated. A release point is proposed at the MIA that

will release waters to estuarine receiving water. A release point monitoring location is nominated

in Table 20-8.

Note: Preliminary WQOs are provided in Table 20-6 and are based AWQG – 99% trigger values, AWQG – aquaculture

and model mining conditions and site data where no published trigger values are available. Additional and ongoing

sampling will be undertaken to derive site specific local WQOs for the 20th, 50th and 80th percentiles.

Table 20-7 Schedule F – Table 1 Receiving waters and environmental monitoring locations and frequency – Freshwater and wetlands

Monitoring point Latitude (decimal, degree GDA94)

Longitude (decimal, degree, GDA94)

Site Function Frequency

Release Point

None proposed

Environmental monitoring point

SW - 01 -11.810192 142.131737 Freshwater monitoring point Monthly when water is available

SW - 03 -11.798954 142.038991 Freshwater monitoring point Monthly when water is available

Page 17: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-14

Table 20-8 Schedule F – Table 2 Receiving waters and environmental monitoring locations and frequency – Marine and estuarine waters

Release point Latitude (decimal, degree GDA94)

Longitude (decimal, degree, GDA94)

Site Function Frequency

Release Point

Rp-1 -11.775211 142.077261 MIA sediment dam release point Daily for first flush of initial release, then monthly

Environmental monitoring point

SW - 02 -11.757291 142.072373 Estuarine monitoring point Monthly when water is available

SW - 04 -11.813973 142.101189 Estuarine monitoring point Monthly when water is available

SW - 05 -11.821919 142.068648 Estuarine monitoring point Monthly when water is available

W-1 -11.789000 142.072500 Marine monitoring point Monthly

W-2 -11.777100 142.077800 Marine monitoring point Daily for first flush of initial release, then monthly

W-3 -11.762200 142.076500 Marine monitoring point Monthly

W-4 -11.742900 142.048800 Marine monitoring point Monthly

W-5 -11.757100 142.011800 Marine monitoring point Monthly

W-6 -11.806448 142.066884 Marine monitoring point Monthly

W-7 -11.772062 142.079092 Marine monitoring point Daily for first flush of initial release, then monthly

Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands

Quality Characteristics

Units Preliminary freshwater WQO

Basis for Nomination Preliminary wetland WQO

Basis for Nomination

pH pH Units 20th, 50th and 80th percentiles

Site specific local WQOs 5.5 – 8.0 AWQG - tropical wetlands2

Electrical Conductivity

µS/cm 20th, 50th and 80th percentiles

Site specific local WQOs 90 – 900 AWQG - tropical wetlands

Turbidity NTU 20th, 50th and 80th percentiles

Site specific local WQOs 2 – 200

AWQG – tropical wetlands

DO – dissolved oxygen

% saturation

85 – 120 AWQG – tropical rivers 90 – 120 AWQG - tropical wetlands

Total phosphorus

mg/L 0.01 – 0.05 AWQO Tropical rivers and wetlands

0.01 – 0.02 AWQO Estuarine and marine

Total nitrogen mg/L 0.2 – 1.2 AWQO Tropical rivers and wetlands

0.1 – 0.25 AWQO Estuarine and marine

Aluminium µg/L 27 AWQG – 99% 27 AWQG – 99%

Arsenic (III) µg/L 1 AWQG – 99% 1 AWQG – 99%

Arsenic (v) µg/L 0.8 AWQG – 99% 0.8 AWQG – 99%

Cadmium µg/L 0.06 AWQG – 99% 0.06 AWQG – 99%

Chromium (VI) µg/L 0.01 AWQG – 99% 0.01 AWQG – 99%

Copper µg/L 1 AWQG – 99% 1 AWQG – 99%

2 Recognising low pH of sampling data

Page 18: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-15

Quality Characteristics

Units Preliminary freshwater WQO

Basis for Nomination Preliminary wetland WQO

Basis for Nomination

Iron µg/L 300 Model Mining Conditions

300 Model Mining Conditions

Lead µg/L 1 AWQG – 99% 1 AWQG – 99%

Manganese µg/L 1200 AWQG – 99% 1200 AWQG – 99%

Mercury µg/L 0.06 AWQG – 99% 0.06 AWQG – 99%

Nickel µg/L 8 AWQG – 99% 8 AWQG – 99%

Vanadium µg/L 10 Model Mining Conditions

10 Model Mining Conditions

Zinc µg/L 2.4 AWQG – 99% 2.4 AWQG – 99%

Boron µg/L 90 AWQG – 99% 90 AWQG – 99%

Cobalt µg/L 90 AWQG – 99% 90 AWQG – 99%

Selenium µg/L 5 AWQG – 99% 5 AWQG – 99%

Molybdenum µg/L 34 AWQG – 99% 34 AWQG – 99%

NH3+ (ammonia)

µg/L 900 Model Mining Conditions

900 Model Mining Conditions

Petroleum hydrocarbons (C6-C9)

µg/L 20 Model Mining Conditions

20 Model Mining Conditions

Petroleum hydrocarbons (C10-C36)

µg/L 100 Model Mining Conditions

100 Model Mining Conditions

NOTE: Trigger levels for metal/metalloids apply if dissolved results exceed trigger.

Table 20-10 Schedule F – Table 4 Contaminant trigger levels – Marine and estuarine waters

Parameter Unit Preliminary

WQO

Basis Comment

Physicochemical

Dissolved oxygen % 90 –120 AWQG – tropical

estuaries

Ambient condition range widely from

these standard concentrations,

particularly within the upper estuary.

Development of site specific criteria is

recommended as part of long-term

marine monitoring. Spatial

consideration in criteria is required.

pH 6 – 8.5 AWQG – tropical

estuaries

Applicable

Electrical

Conductivity

µs/cm n/a n/a No WQO proposed due to natural

variability and no potential Project

impacts involving releases of saline

water. The presence of a salinity

maximum has been identified within the

upper estuary. This alters between

seasons so that seasonal criteria may

also be required. Spatial consideration

in criteria is required.

Turbidity NTU 1 – 200 AWQG 1 – 20 NTU

fortropical estuaries

and 2 – 200 NTU for

tropical wetlands.

Ambient conditions are seasonally

elevated above these criteria in several

of the samples, particularly from the in

situ logger data. Development of site

specific criteria will be undertaken as

Page 19: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-16

Parameter Unit Preliminary

WQO

Basis Comment

part of marine monitoring prior to

construction and operations. Spatial

consideration in criteria is required.

Nutrients

NH3+ ammonia µg/L 900 AWQG – tropical

estuaries

The standard ANZECC criteria are

substantially lower than the conditions

screened from the Skardon River at

present. Further development of site

specific criteria will be undertaken as

part of long-term marine monitoring

prior to construction.

Nitrate mg/L 30 AWQG – tropical

estuaries

Total nitrogen µg/L 250 AWQG – tropical

estuaries

Total phosphorus µg/L 20 AWQG – tropical

estuaries

Metals

Aluminium µg/L 27 AWQG – marine

99% trigger

Arsenic µg/L 0.8 AWQG – marine

99% trigger

Cadmium µg/L 0.06 AWQG – marine

99% trigger

Chromium µg/L 0.1 AWQG – marine

99% trigger

Copper µg/L 1.0 AWQG – marine

99% trigger

Iron µg/L 300 AWQG – marine

99% trigger

Lead µg/L 1.0 AWQG – marine

99% trigger

Manganese µg/L 1,200 AWQG – marine

99% trigger

Mercury µg/L 0.06 AWQG – marine

99% trigger

Vanadium µg/L 10 Model Mining

Conditions

Zinc µg/L 2.4 AWQG – marine

99% trigger

Biological

Chlorophyll-a mg/m3 2 AWQG – tropical

estuaries

The standard ANZECC criteria are largely

applicable for use in monitoring.

However, programs will also develop an

improved understanding of ambient

conditions to develop site specific

criteria.

Hydrocarbons

C6-C9 µg/L 20 Model Mining

Conditions

The presence of hydrocarbons within

the waters of the study area is not

expected. Sampling as part of

operational monitoring will be

undertaken.

C10-C36 µg/L 100 Model Mining

Conditions

(F3) Where an exceedance has occurred, Metro Mining will complete an investigation into the

potential for environmental harm and provide a report to the administering authority in the next

annual return outlining:

Page 20: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-17

Details of the investigations carried out; and

Actions taken to prevent environmental harm.

The following information will be recorded for all water monitoring:

The date on which the sample was taken;

The time at which the sample was taken;

The monitoring point at which the sample was taken; and

The results of all monitoring and details of any exceedances of the conditions of the EA.

(F4) The environmental authority holder must, within 28 days of a release that is not compliant

with the conditions of this environmental authority, provide a report to the administering authority

detailing:

The reason for the release;

The location of the release;

The duration of the release and which (if any) part of this period was non-compliant;

All water quality monitoring results (including all laboratory analyses);

Identification of any environmental harm as a result of the non-compliance; and

Any other matters pertinent to the water release event.

Receiving Environment Monitoring Program (REMP)

(F5) The environmental authority holder must develop and implement a Receiving Environment

Monitoring Program (REMP) to 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. For the purposes of the REMP, the receiving environment is the

waters of the Skardon River, Irish Creek and wetlands within and surrounding the Project area

downstream or down gradient of the authorised mining activity.

(F6) A REMP Design Document that addresses the requirements of the REMP must be prepared and

made available to the administrating authority upon request.

(F7) 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 administrating

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 reuse

(F8) 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 deposited into artificial water

storage structures, such as tanks, or used directly at properties owned by a third party (with the

consent of the third party).

Page 21: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-18

Annual Water Monitoring Reporting

(F9) 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:

a. The date on which the sample was taken;

b. The time at which the sample was taken;

c. The monitoring point at which the sample was taken;

d. The measured or estimated daily quantity of mine affected water released from all release

points;

e. The release flow rate at the time of sampling for each release point;

f. The results of all monitoring and details of any exceedances of the conditions of this

environmental authority; and

g. Water quality monitoring data must be provided to the administering authority in the

specified electronic format upon request.

Temporary Interference with waterways

(F10) Destroying native vegetation, excavating, or placing fill in a watercourse, lake or spring

necessary for and associated with mining operations must be undertaken in accordance with

Department of Natural Resources and Mines (or its successor) Guideline – Activities in a

Watercourse, Lake or Spring associated with Mining Activities.

Water Management Plan

(F11) A Water Management Plan must be developed by an appropriately qualified person and

implemented prior to construction commencing.

(F12) The Water Management Plan shall provide for the proper and effective management of the

actual and potential environmental impacts resulting from the mining activity and to ensure

compliance with the conditions of this environmental authority.

(F13) The Water Management Plan must be developed in accordance with the latest version of the

administering authorities Guideline for Preparing a Water Management Plan and must include at

least the following components:

Contaminant source study;

Site water balance and model;

Water management system;

Emergency and contingency planning; and

Monitoring and review.

(F14) Each year the holder of this environmental authority must undertake a review of the Water

Management Plan to ensure that proper and effective measures, practices or procedures are in place

Page 22: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-19

so that the mine is operated in accordance with the conditions of this environmental authority and

that environmental harm is prevented or minimised.

(F15) A copy of the Water Management Plan and/or a copy of the final review document of the

Water Management Plan must be provided to the administering authority on request.

Stormwater and Water sediment controls

(F16) Contaminated stormwater runoff from any waste handling, storage or disposal area or any

vehicle maintenance or washdown area must not be released directly or indirectly to any waters

except as permitted under the conditions of this environmental authority.

(F17) The Erosion and Sediment Control Plan must be periodically updated by an appropriately

qualified person with any amendments implemented for all stages of the mining activities on the

site to minimize erosion and the release of sediment to receiving waters and contamination of

stormwater.

(F18) Stormwater, other than mine affected water, is permitted to be released to waters from:

a. Erosion and sediment control structures that are installed and operated in accordance with

the Erosion and Sediment Control Plan required by condition F11; and

b. Water management infrastructure that is installed and operated, in accordance with a

Water Management Plan that complies with condition F10, for the purpose of ensuring

water does not become mine affected water.

(F19) The Erosion and Sediment Control Plan must provide for at least the following stormwater

management functions and be made available to the administering authority upon request:

Prevent or minimise the contamination of stormwater;

Diverting uncontaminated stormwater run-off around areas disturbed by Port infrastructure

area activities or where contaminants or wastes are stored or handled;

Contaminated stormwater runoff and incident rainfall from mining activities is collected within

mine pits and reused or released to groundwater or evaporation;

Roofing where practicable or minimising the size of areas where contaminants or wastes are

stored or handled;

Using alternate materials and or processes (such as dry absorbents) to clean up spills that will

minimise the generation of contaminated waters;

Erosion and sediment control structures are placed to minimise erosion of disturbed areas and

prevent the contamination of any waters;

Procedures to ensure that erosion and sediment control structures are maintained and

adequate storage is available in sediment ponds in accordance with design criteria; and

Training of staff that will be responsible for maintenance and operations of erosion and

sediment control structures.

The plan must also make provision to ensure that:

Vegetation clearing and topsoil stripping will occur following the wet season;

Page 23: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-20

Backfilled pits will be revegetated as soon practicable;

Backfilled pits are fully internally draining;

Disturbed areas around construction sites must be rehabilitated promptly if not in an area

subject to mining or infrastructure;

Sediment traps must be included as part of the drainage designs at points where haul roads

cross watercourses; and

Relevant aspects of the engineering Guidelines for Queensland for Soil Erosion and Sediment

Control will be followed.

(F20) Any spillage of wastes, contaminants or other materials must be cleaned up as quickly as

practicable to minimise the release of wastes, contaminants or materials to any stormwater

drainage system or receiving waters.

20.2.10 Schedule G – Sewage Treatment

(G1) Treated sewage effluent is permitted to be released to land as long as the treated effluent is in

compliance with the release limits stated in Table 20-11.

Table 20-11 Schedule G – Table 1 Contaminant releases to land

Contaminant Unit Release limit Limit type Frequency

5 day Biochemical oxygen

demand (BOD) 1

mg/L 20 Maximum Monthly

Total suspended solids mg/L 30 Maximum Monthly

Nitrogen mg/L 30 Maximum Monthly

Phosphorus mg/L 15 Maximum Monthly

E-coli Organisms/100ml 1,000 Maximum Monthly

pH pH units 6.0 – 9.0 Range Monthly

(G2) Treated sewage effluent may only be released to land within the mining lease at a designated

area adjacent to the sewage treatment plant.

(G3) 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; and

c. There is no run-off of effluent.

(G4) If areas irrigated with effluent are accessible to employees or the general public, prominent

signage must be provided advising that effluent is present and care should be taken to avoid

consuming or otherwise coming into unprotected contact with the effluent.

(G6) The daily volume of effluent release to land must be measured and records kept of the volumes

of effluent released.

(G7) A minimum area of land, excluding any necessary buffer zones, must be utilised for the

irrigation and/or beneficial reuse of treated sewage effluent and will be determine using MEDLI

modelling or similar prior to construction.

Page 24: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-21

20.2.11 Schedule H – Land and Rehabilitation

(H1) Land disturbed by mining must be rehabilitated in accordance with Table 20-12.

Table 20-12 Schedule H – Table 1 Rehabilitation Requirements

Domain Outcome Objective Completion Criteria

General

All site components

Community and future generations are left with no residual liability for site rehabilitation or maintenance.

To ensure that progressive rehabilitation and site decommissioning leave the area safe, fit for purpose, and non-polluting.

Government acceptance of mine completion report which demonstrates achievement of all completion criteria.

Rehabilitation Completion Criteria

All site components3

Geotechnical stability has been confirmed.

Erosion rate is managed to levels that do not compromise post mine land use.

Safety risk to people and fauna is managed.

Water catchment values are maintained.

All artificial slopes will have a slope that is <8m tall and <30 ̊.

No single area of bare soil within rehabilitation that exceeds 25m2 in area.

Any visible, active erosion is within levels recorded at reference sites.

Surface water and groundwater quality meets the agreed trigger values set in the EA.

Ecological and biodiversity indicators are confirmed to approach pre-existing conditions.

Vegetative community similar to pre-existing.

Vegetative community to be self-sustaining.

Greater than 50% of the total woody biomass (as assessed by basal area) should comprise dominant tree species of RE 3.5.2 and/or RE3.3.12 and/or RE 3.3.14a.

Stem densities within rehabilitated sites should exceed the 10th percentile of the reference sites.

Rehabilitation monitoring to demonstrate natural seeding and/or suckering is occurring.

Rehabilitation monitoring to demonstrate that native species richness exceeds the 10th percentile of reference sites.

Rehabilitation is free from Class 1 and 2 declared weeds.

Rehabilitated vegetation communities must persist over multiple wet seasons.

Rehabilitated vegetation communities must meet all completion criteria having experienced a fire within the previous five years.

3 All infrastructure except that specifically requested to remain following consultation with post mining land owner/Traditional Owners, and with approval of the relevant regulator.

Page 25: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-22

(H2) Rehabilitation must commence progressively in accordance with the plan of operations.

Contaminated Land

(H3) 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.

(H4) Before applying for progressive rehabilitation certification for an area, the holder must (if

applicable) provide to the administering authority a site investigation report under the Act, in

relation to any part of the area the subject of the application 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 under condition H1.

(H5) Minimise the potential for contamination of land by hazardous contaminants.

Pest and weed management

(H6) A Pest and Weed Management Plan will be developed and implemented to minimise the

potential for the introduction of weeds and pests, and to control any outbreaks of weeds that occur

as a result of Project activities.

Biodiversity offsets

(H7) The holder of this environmental authority must provide an offset for impacts on applicable

state significant biodiversity values, in accordance with Queensland Biodiversity Offset Policy. The

biodiversity offset must be consistent with the requirements for an offset as identified in the

Biodiversity Offset Strategy (as per condition H7) and must be provided:

a. Prior to impacting on state significant biodiversity values; or

b. Where a land based offset is to be provided, within 12 months of the later of either of the

following:

i. The date of issue of this environmental authority; or

ii. The relevant stage identified in the Biodiversity Offset Strategy submitted under

condition H7; or

iii. Where an offset payment is to be provided, within four months of the later of either

of the following:

a. The date of issue of this environmental authority; or

b. The relevant stage identified in the Biodiversity Offset Strategy submitted

under condition H7; or G7, A Biodiversity Offset Strategy must be developed

and submitted to the administering authority within either 30 days, or a

lesser period agreed to by the administering authority, prior to impacting

on the applicable state significant biodiversity values.

Page 26: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Bauxite Hills Project Draft EA Conditions

20-23

(H8) A Biodiversity Offset Strategy must be developed and submitted to the administering authority

within either 30 days, or a lesser period agreed to by the administering authority, prior to impacting

on the applicable state significant biodiversity values.

Acid sulphate soils

(H9) Treatment and management of acid sulfate soils must comply with the latest edition of the

Queensland Acid Sulfate Soil Technical Manual.

End of Conditions

Page 27: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

Airport Strip

Haul Road

Accommodation Camp

BH6 EastMLA boundary

(MLA 20688)Camp

Access Road

Haul Road

BH1 MLA boundary (MLA 20676)

BH6 West

MLA boundary(MLA 20689)

SK

ARDON

RIVER

NAMALETA C REEK

NAMALETA CREEK

SKARDON RIVER

605000

605000

610000

610000

615000

615000

620000

620000

625000

625000

86

90

00

0

86

90

00

0

86

95

00

0

86

95

00

0

87

00

00

0

87

00

00

0

DATE

DISCLAIMERCDM Smith has endeavoured to ensure accuracy

and completeness of the data. CDM Smith assumes no legal liability or responsibility for any decisions or actions resulting from the information contained

within this map.

GCS GDA 1994 MGA Zone 54

/0 1,000 2,000500

Metres

Figure -

Project infrastructure layout

©COPYRIGHT CDM SMITHThis drawing is confidential and shall only be used

for the purpose of this project.

APPROVED

DRAWN

15/03/16

CHECKED

Legend

Mine Infrastructure Area

Watercourse

Haul Road

Pit Extents

Mine Lease Area

Camp Site

DATA SOURCEMEC Mining 2016;

QLD Government Open Source Data;Australian Hydrological Geospatial Fabric

(Geofabric) PRODUCT SUITE V2.1.1 DRG Ref: BES150115-002-R2_PROJ_INFRA

DESIGNER CLIENT

1:65,000Scale @ A3 -

MIDESIGNED

CHECKED MI

MD

MD

19/02/16

R Details Date

15/07/151

Notes:

2

3

-

-

-

-

F:\1_PROJECTS\BES150115_Bauxite_Hill\GIS\DATA\MXD\FINAL\ERA\BES150115-002-R2_PROJ_INFRA.mxd

For Approval

Updated Pit Extents

Final

-

-

-

-

Barge Loading

Area

Mine Infrastructure

Area

21/10/15

Logistics Barge

Facility

!!

!!

!!

!!

!!

!!

!

!!

!!

!!

!

(

((

((

((

(

!

!

!

!

(

(

(

(

142°3'39.648"E11°44'41.983"S

142°3'58.611"E11°44'50.543"S

142°3'57.718"E11°44'52.548"S

142°3'38.755"E11°44'43.987"S

Floating Crane Moorings

Tug and BargeMoorings

Page 28: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

!(

!(!(

!(

!(

!(

!(

!(!(

!(

!(

!(

!(

!(

!(

!(BH6 West

MLA boundary

(ML 20689)

BH6 East MLA boundary

(ML 20688)

BH1 MLA boundary(ML 20676)

BGWMB-2

BGWMB-1

GWMB-9GWMB-8

GWMB-7

GWMB-4

GWMB-6

GWMB-5

GWMB-3

GWMB-2

GWMB-1

GWMB-14

GWMB-13

GWMB-12

GWMB-11

GWMB-10

SKARDON RIVER

610000

610000

615000

615000

620000

620000

625000

625000

86

90

00

0

86

90

00

0

86

95

00

0

86

95

00

0

DATE

DISCLAIMERCDM Smith has endeavoured to ensure accuracy

and completeness of the data. CDM Smith assumes no legal liability or responsibility for any decisions or actions resulting from the information contained

within this map.

GCS GDA 1994 MGA Zone 54

/0 500 1,000250

Metres

Figure 2 -2

Groundwater monitoring

bore locations

©COPYRIGHT CDM SMITHThis drawing is confidential and shall only be used

for the purpose of this project.

APPROVED

DRAWN

05/04/16

CHECKED

Legend

!( Background Groundwater Monitoring Bore

!( Groundwater Monitoring Bore

Barge Loading Area

Watercourse

Haul Road

Pit Extents

Accomoodation Camp

Metro Mining Mine Lease Area

Groundwater Dependence

High potential for GW interaction

Moderate potential for GW interaction

Low potential for GW interaction

DATA SOURCEMEC Mining;

QLD Government Open Source Data;Australian Hydrological Geospatial Fabric

(Geofabric) PRODUCT SUITE V2.1.1 DRG Ref: BES150115-052-R1_GW_MONITOR

DESIGNER CLIENT

1:45,000Scale @ A3 -

-DESIGNED

CHECKED -

MD

MD

-

R Details Date

16/07/151

Notes:

2

-

-

-

-

-

F:\1_PROJECTS\BES150115_Bauxite_Hill\GIS\DATA\MXD\FINAL\ERA\BES150115-052-R1_GW_MONITOR.mxd

For Information Purposes

Updated Pit Extents

-

-

-

-

-

Barge Loading Area

Haul Road

Haul Road

Accommodation Camp

05/04/16

Camp

Access Road

Page 29: Metro Mining Appendix H2 - Metro Mining Community and ... · Table 20-9 Schedule F – Table 3 Contaminant trigger levels – Freshwater and wetlands .....20-14 Table 20-10 Schedule

!>

!>

!>

!>

!>

!>

!>

!>

!>

!>

!>

!>

!>

BH6 West MLA boundary

(ML 20689)

BH1 MLA boundary(ML 20676)

BH6 East MLA boundary

(ML 20688)

Big Footprint

Swamp

W7

W6

W5

W4

W3

W2

W1

RP1

SW05

SW03

SW02

SW04

SW01

SKARDON RIVER

605000

605000

610000

610000

615000

615000

620000

620000

625000

625000

630000

630000

86

90

00

0

86

90

00

0

86

95

00

0

86

95

00

0

87

00

00

0

87

00

00

0

DATE

DISCLAIMERCDM Smith has endeavoured to ensure accuracy

and completeness of the data. CDM Smith assumes no legal liability or responsibility for any decisions or actions resulting from the information contained

within this map.

GCS GDA 1994 MGA Zone 54

/0 1,000 2,000500

Metres

Figure 2 -3

Surface water monitoring locations

©COPYRIGHT CDM SMITHThis drawing is confidential and shall only be used

for the purpose of this project.

APPROVED

DRAWN

24/03/16

CHECKED

Legend

Barge Loading Area

Major watercourse

Minor watercourse

Big Footprint Swamp

Haul Road

Pit Extents

Accommodation Camp

Metro Mining Mine Lease Area

Surface Water Sampling Location

!> Freshwater

!> Estuarine

!> Marine

!> Release Point

DATA SOURCEMEC Mining;

QLD Government Open Source Data;Australian Hydrological Geospatial Fabric

(Geofabric) PRODUCT SUITE V2.1.1 DRG Ref: BES150115-047-R1_SW_MONITOR

DESIGNER CLIENT

1:65,000Scale @ A3 -

-DESIGNED

CHECKED -

MD

MD

-

R Details Date

24/03/16

1

Notes:

2

-

-

-

-

-

F:\1_PROJECTS\BES150115_Bauxite_Hill\GIS\DATA\MXD\FINAL\ERA\BES150115-047-R1_SW_MONITOR.mxd

For Information Purposes

Updated Pit Extents

-

-

-

-

-

Barge Loading Area

Haul Road

Haul Road

Accommodation Camp

15/07/15

CampAccess

Road