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CNMC Luanshya Copper Mines Pic
CLM
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
7.0 ENVIRONMENTAL MANAGEMENT PLAN.
CNMC-Luanshya Copper Mines (CLM) Pic has adopted Cleaner Production
(CP) as an integral part of its corporate strategy for environmental
management. This strategy is clearly stated in the Environmental Policy
Statement. In practice, this is the first step in environmental management and
it cuts across all the mine processing units. The Mine acknowledges also that
sustainable development cannot be attained without putting in place an
effective environmental management system. To implement environmental
management commitments, CLM adopted a Cleaner Production procedure
briefly explained below.
Source reduction: -This strategy involves reducing waste from the source
by improving the production process and incorporating waste reduction in
the use of materials at all levels of production. The waste minimisation
approach goes beyond just producing copper (Cu) and cobalt (Co)
concentrates to all the supporting activities. For example, reducing the
volume of wastepaper by using electronic mails and sometimes processing of
waste rock by way of reclaiming for quarry or mineral processing.
Recycling: -This is the next option of the EMS for CLM and is applicable
together with the source reduction strategy' or when the source reduction
option is not practicable. Examples of processing units at CLM where
recycling is highly applied is the concentrator where the process water is
recycled. Used oil is also recycled by a subcontractor who buys used oil from
the mine.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
CNMC Luanshya Copper Mines Pic
CLM
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
Treatment : - In cases where source reduction and recycling are not
practical, CLM applies "Treatment Method", which is the best possible means
of reducing the hazardous nature of waste.
Safe landfill disposal: - Although this is the last option, it is important
because it's applicable where the three options above are not feasible or as an
integral measure of the source reduction, recycling and treatment options.
All these interventions are in line with the Environmental Protection and
Pollution Control Act (EPPCA) of 1990, and the Mines and Minerals
(Environmental) Regulations of 1997. During the period of its existence, CLM
has developed and revised a number of Environmental Management
measures and commitments for the environmental impacts.
7.1 Liquid Effluent Management
Effluent water that will be generated from spillage washings will be
channelled into the drain which would lead to the settling pond for
suspended solid interception. Sampling of all effluent water for quality
monitoring purposes will be conducted weekly and the reference point will
be the standards set by Environmental Council of Zambia, as shown in Table
7.1 below.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
CNMC Luanshya Copper Mines Pic
CLM
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
Table 7.1 STANDARDS FOR EFFLUENT & WASTE WATER INTO AQUATIC
ENVIRONMENTS
PARAMETER ECZ STANDARD
A. Physical
1 Temperature (Thermometer 40 OC at point of entry
2 Colour (Hazen Units) 20 Hazen units
3 Odour and Taste (Threshold odour number) Must not cause any deterioration in taste or odour
as compared with natural state
4 Turbidity (NTU scale) 15 Nephelometer turbidity units
5 Total Suspended Solids (Gravimetric 100 mg/L must not cause formation of sludge or
method) scum in receiving water
6 Settleable matter sedimentation in 2 hours 0.5 mg/L in two hours. Must not cause formation
(Imhoff funnel) of sludge in receiving water
7 Total Dissolved Solids (Evaporation at 105 3000 mg/L The TDS of waste water must not
OC and Gravimetric method) adversely affect surface water
8 Conductivity (Electrometric method) 4300ljS/ctti
B Bacteriological
9 Total Coliform/100 ml (Membrane Filtration 25000
method)
10 Faecal Coliform/100ml (Membrane Filtration 50000
method)
11 Algae /100 ml (Colony counter) 1000 cells
|C Chemical
12 pH (0-14 scale) (Electro-metric method) 6.0-9.0
Process water is expected to be released to the natural ecosystem. Depending
on the analysis results of TSS, TDS, and Hydrocarbon contamination among
other parameters, once it is effectively settled, effluent water will be re-used
for suppressing dust. However, excess water shall be released into the natural
environment. Environmental Services Section shall ensure weekly sampling
of the effluent is done before discharge is done to the natural environment.
Remedial measures shall be employed immediately to correct results that lie
out of acceptable standards.
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Environmental Project Brief Silica Quarry at Muva Hills.
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CNMC Luanshya Copper Mines Pic
CLM
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
7.2 Generation of Dust/ Fumes
A deliberate routine programme for suppressing dust will be embarked on.
This will involve watering of tracks and all areas surrounding the Silica plant.
The proposed site comprises an extended outcrop of quartzite rock.
Therefore, no meaningful land clearance will be done which could expose the
area to fugitive dust in case of wind. At most dust is only expected to be
generated from vehicular movements and natural phenomenon such as
whirlwind, even though the surrounding mature stands of the Miombo
woodlands will block most of harmful winds directed to the Silica Plant.
Routine dust monitoring will be conducted in line with the Mining
Regulation 939(1) & (2). This will help us mitigate and control emission levels
to well below the maximum allowable concentration of 350 particles per
cubic centimetre. Under the guidance of Ventilation Officers, the Site
Foreman shall ensure Routine Dust Monitoring Reports are prepared
monthly.
7.3 Soil Compaction
Soil compaction is expected to be confined to the area around the Quarry
Facility and heavy duty' tracks leading to and from the Project area. As stated
in the decommissioning strategy' plan, compaction of soils will be inevitable
during the construction and operations phase.
During the decommissioning phase, compacted soils will be ripped using
Tractor disks. This will result in loose soils which can easily support
vegetation growth and other natural ecosystem interactions. Eventually the
site would be colonised by indigenous plant species and thus provide natural
habitats for fauna and flora.
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Environmental Project Brief Silica Quarry at Muva Hills.
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CLM Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
7.4 Noise level
The noise which is likely to be produced from blasting, crushing and other
mobile equipments is expected to be within reasonable health limits.
International guidelines recommend a maximum noise exposure of 85
decibels (dB) in a shift of 8 hour-day. Therefore, where noise levels would be
likely to exceed 85 dB, adequate precaution measures shall be put in place.
However, all employees who would be working around the site would be
provided with appropriate personal protective clothing (PPE) i.e. ear muffs/
ear plugs, to protect them from adverse noise effects. Signages shall be
posted around to remind employees to adhere to prescribed health and safety
regulations. The site Foreman will be responsible for all noise/dust abatement
systems, and is mandated to compile monitoring reports. The Site Foreman
works in collaboration with CLM Ventilation Officers and Environmental
Service Coordinators.
7.5 Management of Waste
In the case of machinery breakdown and subsequent oil spillages, the
contamination (spill) shall be cleaned up immediately. Loaders and transport
Trucks will be scheduled for routine maintenance and complete overhaul
involving change of, oils only at the Mine Garage facility or at the nearby
Baluba Diesel Workshop. Both facilities are registered under the ECZ license
to generate and store hazardous waste i.e. used oil and oil contaminated
filters. Soil contamination which may result from oil spillages will be
contained by way of appropriate spillage control kit and in accordance with
Material Control Data sheet recommendations. Depending on the level of
contamination, contaminated soils may be required to be dug up and isolated
so as to bio-remediate them.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
CNMC Luanshya Copper Mines Pic
CLM
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
Waste bins shall be designated strategically around the Plant area and shall be
rebelled in terms of Domestic waste, Industrial Waste, and hazardous waste.
The Site Foreman shall work hand in hand with CLM Environmental Services
personnel in all aspects related to waste management.
7.6 Fire Hazard
Fires have been anticipated, with the main sources being electrical short
circuits and combustible fuels in loaders and transport vehicles working in
the proximity area. Fire Services personnel will station appropriate types of
fire extinguishers at the proposed Silica Quarry for combating fires. CLM Fire
Tender equipped with a radio communication device will always be on alert
in case of fire out-brake. Emergency toll free lines will be posted around the
site for quick fire service response in case of an inferno. All employees are
mandated to protect this facility against fire through collaboration working
terms with CLM Fire Sendees Section.
7.7 Public Health and safety
CLM will endeavour to prevent the spread of malaria as much as possible. An
in-house anti-malaria spraying exercise for areas within the mine and
surrounding areas is currently conducted and will be intensified even for
areas around the project sites.
7.8 Workers' health and Safety
Strict adherence to safety measures and procedures will minimise and to a
great extent eliminate risks of accidents or hazardous developments occurring
and ensure healthy and safe conditions for all persons working around the
proposed area. CLM has developed safety procedures on how to operate in
different high risk environments.
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Environmental Project Brief Silica Quarry at Muva Hills.
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CNMC Luanshya Copper Mines Pic
CLM i *
Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
Prior to blasting activities, a Vehicle mounted with a radio and alarm system
will go round the surrounding community to warn residents in the nearby
farm settlement to stay away from the project area within a radius to be
advised.
First-aid induction shall be conducted on all employees prior to engagement.
A standby vehicle for emergence evacuation to the nearby Baluba Mine Clinic
will be stationed at the Silica Quarry Plant. The Clinic at Baluba Mine is
equipped with modern Ambulance facility for further evacuation to Luanshya
Mine Hospital.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
CNMC Luanshya Copper Mines Pic
CLM Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
8.0 DECOMMISSIONING AND CLOSURE
Decommissioning and closure of the Silica quarrying Plant at Muva Hill is
expected to be implemented 3 years after commencement of actual quarrying
and processing. The activities that are expected to characterise the closure and
decommissioning of the Quarry Plant includes;
■ Isolation of all electrical connections except for security lighting,
■ Removal of Crusher unit for storage at Baluba Mine,
■ Profiling of dug out areas and general landscaping,
■ Demolition of all concrete wall- debris to be filled into dug out areas,
■ Isolation of any contaminated soils on site for bioremediation,
■ Blocking of other access routes except for the Mine Police patrol route,
■ Ripping all soil compacted surfaces on site. Compacted soils will be
loosened by ripping or through disking the area, so as to encourage
natural colonisation.
Ten percent (i.e. US$ 21,000.00) of the total project cost is projected to be spent
on decommissioning activities, mainly rehabilitating the Muva Hill site.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
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CLM Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
9.0 CONCLUSION
CNMC Luanshya Copper Mines (CLM) Pic feels duty bound to report and
seek technical advice from state authorized agencies such as ECZ and the
Mines Safety Department (MSD) even on matters that relate to modification
of historical operations of the Luanshya Copper Mine, which it took over in
June, 2009. The proposed Silica Quarry Plant is planned to be located at the
foot of the rawmaterial Quartzite outcrop at Muva Hill. The area being
applied for is under Muva Hill mining license LML 58 which has since been
updated to License No. 8394-HQ-LML
This Environmental Project Brief will be referred to during design and actual
operational stages of the Silica plant. All mitigation measures would be
implemented as outlined, but in certain cases environmentally friendly
modification shall be sought. The project is expected to be in active operation
for about 3 years. The construction and all installation works for the Silica
Plant are expected to cost CLM a sum of USD 210,000.00, whereas
decommissioning and closure costs are expected to average USD 21,000.00.
Employment creation to the local residents and creation of an extended tax
base are some of the socio-economical attributes of this project. Noise and
fugitive dust generation constitute the greater health and environmental
concerns. CLM Pic would like to emphasize that the benefits accrual on this
Silica Quarry Plant establishment on the operations of the Muliashi Mining
Project and its surrounding environment will greatly outweigh the negative
impacts that would be created.
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Environmental Project Brief Silica Quarry at Muva Hills.
CNMC Luanshya Copper Mines Pic - November, 2010.
CNMC Luanshya Copper Mines Pic
CLM Environmental Project Brief
SILICA QUARRY PLANT AT MUVA HILL
REFERENCE
Environmental Protection & Pollution Control Act (EPPCA) 1997.
ECZ (2000) State of the Environment in Zambia.
LCM (2004), Environmental Impact Statement: Luanshya Mine Shafts
Decommissioning & Closure.
Scott Wilson Piesold (2006), Statutory' Dump Inspection Report: Waste Rock
Dump No. 9.
Yager et. al (1968) Types of Soils -Classification and Types of soils
www.cnmc.com.cn (22/06/2010) 11am.
CNMC Group of Companies.
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Environmental Project Brief Silica Quarry at Muva Hills.
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