draft - yorke peninsula council

NOISE MANAGEMENT & MONITORING PLANS

HILLSIDE MINE COMMUNITY VOICE

18 JUNE 2017

DRAFT

Rex Minerals is developing the Hillside open cut copper / gold mine near Ardrossan,

Yorke Peninsula.

In 2014, the Hillside Mine was granted a Mining Lease (ML) by the DSD, allowing the

mine to proceed under a series of lease conditions.

During the ML process a significant number of submissions from community and

government were received – the Response Document answering these submission

remains a very important source of information about the project.

Rex revised the original project to a smaller copper / gold mine, and recently received

an updated assessment outlining additional detail that should be included in the

PEPR - the Program for Environment Protection and Rehabilitation plan for the mine.

The PEPR will outline how the mine will be operated in a socially responsible and

environmentally sustainable manner and ensure compliance with lease conditions,

and will be submitted to Government.

As part of the PEPR, the Company outlines a series of management plans

particularly around environmental management and community interaction.

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NOISE MANAGEMENT PLAN

STATUS OF HILLSIDE MINE

The ML Conditions determined by DSD form the basis of certain compliance criteria and what is required of Rex Minerals when it develops, operates and closes the mine.

Some lease conditions may be very specific in what, how, when and where an activity or monitoring must take place (e.g. air quality PM10 10 minute averaging measured on a 24hour basis – the monitoring data must be retained and remain accessible on an unrestricted internet site for the life of the mine).

Other conditions are not as specific, however the PEPR will outline plans of operations that will be undertaken on the ML and how the Company proposes to operate to be within compliance of specific lease conditions.

During preparation of the PEPR, Rex is consulting with stakeholders particularly in relation to:

• Detail of management control measures to mitigate impacts.

• Where monitoring is to take place – specialist consultants make location recommendations based on baseline measurements, operating experience and science, and these may be influenced by local considerations.

• The reasonable timing or frequency of the monitoring (unless specified by the lease condition).

• The manner of reporting and frequency of reporting associated with the monitoring of the results (quarterly/annually etc.).

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PEPR PROCESS AND COMMUNITY INPUT

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OVERVIEW

• Objectives.

• What are the noise sources?

• How will noise be controlled and managed?

• What are the compliance criteria?

• What will be in place for monitoring?

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OBJECTIVES

The objective of this Plan is to provide the framework for:

• ensuring compliance with all relevant statutory requirements;

• Rex Minerals Policies and Standards;

• implementing tools and practices to manage and minimise the impact of

noise from mining operations on the environment and nearby residences;

• providing details on noise management responsibilities; and

• maintaining an effective response mechanism to deal with issues and

complaints.

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SOURCES

• construction of the processing plant;

• topsoil recovery using excavators, dozers and trucks or scrapers;

• drill and blast activities;

• open cut mining using hydraulic excavators and haul trucks;

• overburden placement using trucks and dozers;

• haul road construction and maintenance using scrapers, dozers,

graders, compactors and water trucks;

• overburden shaping utilising dozers;

• ore processing;

• copper concentrate transport by road to Port Adelaide;

• exploration drilling activities;

• land rehabilitation activities; and

• maintenance activities.

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DEFINITIONS

Noise is measured by:

• Decibel (dB) - a unit of measurement used to express noise (or

sound) level.

• dB(A) - an expression of the relative loudness of sounds in air as

perceived by the human ear.

• LAeq - is the equivalent continuous sound for when a noise varies over

time.

• LA90 - A-weighted sound pressure level exceeded for 90% of the

measurement time in decibels.

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MEASUREMENT CRITERIA

Receiver zoneNoise Limits (LAeq)

Day (7am to 10pm) Night (10pm to 7am)

Primary Production 56 dB(A) 49 dB(A)

Settlement (Pine Point & Rogues Point)

54 dB(A) 47 dB(A)

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CONTROL STRATEGIES

For effective control and management of noise the following is required:

Design

• Waste rock storage facilities designed to provide shielding.

• Constructed in a manner to enable mining equipment to operate in protected

areas during adverse weather conditions.

• Haul truck specification to minimise the potential for noise characteristics.

• Regularly reversing plant to be fitted with broadband reversing alarms.

• Maintenance workshops and associated infrastructure are strategically located

away from noise-sensitive premises.

• Design of the processing plant and related infrastructure to incorporate noise

mitigation measures.

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CONTROL STRATEGIES


For effective control and management of noise the following is required:

Operational

• Use real-time noise and meteorological monitoring information incorporating

automatic alarms that will enable mine operators to take a proactive approach

to minimising noise impacts by modifying operations when monitoring indicates

that potential impacts may occur.

• Maintain mining equipment to high standards.

• Test mobile plant on an annual basis to ensure compliance with specifications.

• Regularly liaise with the community to obtain feedback on the operational

noise and any suggested improvements for Rex Minerals to consider.

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TYPES OF MONITORING


The following approaches to noise monitoring will be used:

• Unattended real-time continuous noise monitoring for mine operational

management.

• Routine noise compliance audits using attended and unattended noise

monitoring methods.

• Forecast data from the BOM will be utilised to identify the potential for noise

enhancing conditions.

• Real-time data from the weather station will be used to assist correlation of

meteorological effects.

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SUGGESTED MONITORING LOCATIONS


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MONITORING STATION WITH WIND SPEED & SOLAR POWER


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PUBLIC INTERNET SITE

WEBSITE REAL TIME MONITORING

The public internet site will record and display the following information from each

continuous monitoring location for the life of the mine:

• date and time;

• LA90 and LAeq for each 1-hour interval (updated in real-time within 30

minutes);

• continuous weather data monitoring for wind direction, speed, temperature and

rainfall as hourly averages (updated in real-time within 30 minutes).


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EXAMPLE GRAPHICAL OUTPUT



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EXAMPLE GRAPHICAL OUTPUT



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CONTACT DETAILS

STAY IN TOUCH

Website: www.rexminerals.com.au

Email: [email protected]

A: PO Box 3435 Rundle Mall SA 5000

T: +61 (0) 8 82997100

E: [email protected]

http://www.rexminerals.com.au/

mailto:[email protected]

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