9.O CONSERVING OUR NATURAL RESOURCES

72 UMGENI WATER • AMANZI 9.1 ENVIRONMENTAL SUSTAINABILITY, INCLUDING WATER RESOURCES ADEQUACY

MANAGEMENT APPROACH Umgeni Water strives for sustainable growth and • Corporate environmental management focusing will ensure the organisation continues to provide on aligning the business activities towards and extend sustainable water services to all areas. environmental sustainability and promoting a shift Mindful of its high reliance on adequate supplies of towards a green economy, raw water resources, energy, chemicals and other • Operational environmental management natural resources to undertake its core business focusing on ensuring compliance of the services, Umgeni Water is committed to protecting, organisation with applicable governing conserving, effi ciently using and sustaining these environmental legislations and regulations and resources. avoiding and or minimising environmental impacts as a result of business activities, and Umgeni Water currently implements environmental • Integrated environmental management management programmes and plans throughout focusing on the identifi cation, mitigation and the life-cycle of its projects, which is during planning, implementation of management plans for construction, operation and decommissioning. The potential environmental impacts for different environmental management programs infrastructure projects. and plans are categorised into:

ANNUAL REPORT 2O12/2O13 7373 In addition to the mandatory disclosure In the year, progress was made with the following requirements for a public water services entity in water resources developments: , Umgeni Water continues to improve • Imvutshane Dam (UW) construction, alignment of its environmental indicators with the • Spring Grove Dam (DWA-TCTA) partial internationally accepted GRI – Global Reporting completion and impoundment in progress, Initiative – indicator disclosure requirements, in terms • Mkomazi Project (DWA) detailed feasibility study, of materiality and relevance. Aspects include: • Hazelmere Dam raising (DWA) detailed design, materials, including chemicals and water resources, • Darvill WWTW Reuse project feasibility study, and energy effi ciency, greenhouse gas emissions and • East Coast Region Desalination detailed carbon footprint mapping, biodiversity, and waste feasibility study. management, amongst others. CLIMATE CHANGE AND WATER RESOURCES WATER RESOURCES ADEQUACY The potential impact of a changing climate on The core function of Umgeni Water, which is the hydrology and water security of the four main treatment and supply of bulk potable water, is supply dams in the Mgeni catchment has been highly dependent on the availability of sustainable assessed using thirty-one(31) different future water resources. The reconciliation between climate scenarios. water resource availability and water demands is therefore of primary importance to the organisation The assessment of different scenarios has resulted and forms an integral part of its infrastructure in a range of possible alternatives, each with an planning process. Understanding what water equal possibility of occurring in the future. The resources are available to the organisation both scenarios have therefore been packaged in a currently and in the future, and what impacts affect Scenario Selection Tool to facilitate the assessment the level of assurance from these resources, is key of impacts for different permutations. to achieving the balance between supply and demand and in maintaining the assured level of In many respects, this study is the fi rst of its kind in supply required by the customers. South Africa and the rest of world. This is due, not only to being contemporary in terms of determining A map of water resources quality and quantity in the impact of climate change on water security shown in Figure 9.2. per se, but also to the extensive number of climate models used in this assessment, and the coupling of Umgeni Water primarily sources water from ten several complex modelling techniques. impoundments on three major water resource systems namely, the Mgeni System (Mooi and Mgeni Unfortunately, the range of possibilities in the future rivers), the North Coast System (Mdloti River) and remains large and unpredictable. Since each of the South Coast System (Nungwane, Mzimayi and the thirty-one (31) modelled scenarios have an Mzinto rivers). Total water withdrawal by source is equal possibility of occurring in the future, defi nitive shown in Figure 9.1. conclusions and recommendations based on these results, are unfortunately not possible. The increased Figure 9.1 Water Withdrawal by Source (million m3) variability will make the future less predictable and thereby impose additional risk and vulnerability. 438 446 Mooi - Mgeni System Several recommendations emanate from this study North Coast System which Umgeni Water is assessing to taking forward, whilst continuing to explore traditional and new Other (Ixopo Dam) methodologies to improve the management and supply of water. South Coast System

Total withdrawal (mil m3)

2012 2013

74 UMGENI WATER • AMANZI Figure 9.2 Major water resources and water quality status

uThukela DAMS

Mearns Weir Midmar Dam Albert Falls Dam Nagle Dam

Greytown

Hlimbitwa Mvoti Mooi Inanda Dam Henley Dam Hazelmere Dam 23 Thukela Mearns 1 Albert KwaDukuza Falls Mvoti uuMgungundlovuMgungundlovu WSAWSA iiLembeLembe WWSASA Hazelmere Midmar Nagle Henley 4 7 5 Inanda Nungwane Dam Shongweni Dam Mdloti TThehe MMsunduzisunduzi WWSASA uMsunduzi6 Umlazi eeThekwiniThekwini WWSASA Mgeni Shongweni Durban Nungwane Mkhomazi Ixopo Dam EJ Smith Dam uMzinto Dam Ixopo Ixopo 7 SSisonkeisonke WWSASA Lovu Ixopo Mkhomazi uMzinto EJ Smith Mzimayi Mzinto

8 Mthwalume

UUgugu WSAWSA Indian Ocean

Legend WATER RESOURCES PROJECTS 1. Spring Grove Dam (DWA-TCTA) partial River and Impoundment Quality completion and impoundment in progress Excellent 2. Imvutshane Dam (UW) construction Good 3. Lower Thukela run of river abstraction Satisfactory 4. Hazelmere Dam Raising (DWA) detailed design Poor 5. Darvill Wastewater Re-use feasibility Unsatisfactory 6. Mkhomazi Project (DWA) detailed feasibility Not Monitored 7. Seawater desalination detailed feasibility 8. Mhlabatshane Dam complete

RAW WATER QUALITY The status of raw water quality per supply source/ against increased public health risks and higher catchment is represented in Table 9.1 and treatment costs. Figure 9.2. Water quality risks that are currently associated with Umgeni Water’s raw water Water quality management plans include: resources are due to the presence of feedlots • Monitoring quality of raw water resources to in some catchment areas, the presence of assess source quality for treatment. wastewater treatment works upstream of some • Assessing risks associated with trends in impoundments, seasonal changes (rainfall/storm eutrophication, chemical contaminants, events, impoundment stratifi cation) and sewer pathogens and suspended solids, and problems in some towns. These risks are inclusive effectiveness of raw water quality objectives, of: Algal blooms and aquatic weed problems • Engaging in catchment management activities associated with eutrophication, chemical to infl uence resource quality and quantity contamination (including iron and manganese), objectives that will balance environmental elevated turbidity and faecal contamination objectives whilst safeguard consumer health, and (and associated pathogen risk) and erosion runoff • Improving quality of waste discharges from contamination. its sites.

Umgeni Water has set resource quality objectives DWA is kept continuously apprised of the quality for abstractions for water treatment that it will and risks associated with the source water trends continue to use as alert triggers for mitigation to continue to ensure the long-term sustainability of South Africa’s water resources.

ANNUAL REPORT 2O12/2O13 75 Table 9.1: Water Quality of Raw Water

System Catchment Impoundment 2009 2010 2011 2012 2013 Mooi-Mgeni Mooi- Mearns Weir, Good Good Good Good Good Mgeni Midmar Dam 3 1 (812mil m ) Mgeni Albert Falls Dam Good Good Good Good Good Nagle Dam Moderate Moderate Moderate Moderate Moderate Mgeni Inanda Dam Moderate Moderate Moderate Moderate Good North Coast Mdloti Hazelmere Dam Moderate Moderate Moderate Good Moderate 3 (17.9mil m ) Mvoti Run-of-river Moderate Good abstractions South Coast Nungwane, Nungwane Moderate Moderate Moderate Moderate Good (6.0mil m3) Lovu Dam Mzimayi E J Smith Dam Poor Poor Poor Poor Poor Mzinto Mzinto Dam Poor Poor Poor Moderate Moderate Mtwalume River Moderate Moderate Moderate Moderate Moderate Abstraction to Poor Ixopo Ixopo, Ixopo Dam Moderate Moderate Poor Poor Poor (0.6mil m3) Mkomazi

1Gross Capacity

WATER LOSS MANAGEMENT whether or not to proceed with the project. The During the year, resources were used assiduously feasibility study for this wastewater reclamation and water balancing and water loss management project will be completed in 2014. measures were instituted in the treatment systems. The total water loss level has been maintained MATERIALS USAGE AND EFFICIENCY below the target of 5% with 2.45% achieved. Water is one of the most signifi cant input materials (Figure 9.3) for Umgeni Water and is covered in previous section followed by energy which is discussed Figure 9.3 Water loss (%) below. In addition, Umgeni Water has a high reliance on water treatment chemical resources and is therefore committed to improving the usage effi ciency thereof.

ENERGY USAGE AND EFFICIENCY

Overall 2.45% Energy is a key input to water and wastewater treatment processes, and in 2012/2013 Umgeni Water utilised a total of 160 million kWh of electricity. Figure 9.4 shows energy usage and effi ciency 3.1% 3.8% 3.3% 3.8% 2.0% 2.8% 5.6% 1.9% 1.6% 1.2% 1.6% The decrease over the previous year (2011/2012: 217 million kWh) can be attributed to a reduction in raw and potable water pumping in the year which Mvoti Ixopo

Mzinto is subject to optimal matching of storage levels with Wiggins Midmar DV Harris demands from the various systems. Mtwalume Hazelmere Amanzimtoti Umgeni Water

Durban Heights Figure 9.4: Electricity Usage and Effi ciency Trends Maphephethwa WATER REUSE 0.52 Umgeni Water is currently investigating the option 0.40 of treating domestic sewage from its Darvill 0.38 0.33 Wastewater Treatment Works to potable standards. 0.30 The proposal would then be to return the treated water back into the distribution system at Umlaas Road. The water could then be used to augment 217

the supply to the Western Aqueduct (due for 127 138 167 160 completion mid-2018) which will serve the high growth areas along the western corridor of the eThekwini Metropolitan Municipality. The advantage 2009 2010 2011 2012 2013 of this is that water is made available higher up in the system. A full feasibility study of this scheme will Electricity Usage in Kilowatts hour (KWh) be undertaken before any decision is made on KWh per cubic metre product

76 UMGENI WATER • AMANZI An energy audit for all operational sites was The organisation’s carbon footprint is primarily due completed in the prior year and the plans resulting to electricity consumption, and has accordingly from this are to be implemented in the business plan been increasing over the years (Figure 9.6). cycle and include:

• The Mooi-Mgeni Transfer scheme Figure 9.6: CO2 Equivalents (tonnes) hydropower project, • Darvill WWTW cogeneration initiative - utilising 210 598 digester methane to produce electricity. The preliminary investigations indicate that there is 165 208 potential to produce approximately 22 MWhr 153 766 134 430 electricity per day. The project is in preliminary design and EIA stages. Construction is envisaged for 2014/2015, • Optimal management of pumping, and • Implementation of energy effi cient lighting measures aligned to national initiatives.

CHEMICALS USAGE AND EFFICIENCY Umgeni Water closely monitors its chemical usage 20102011 2012 2013 (Figure 9.5). The current initiatives in place to maintain or improve treatment effi ciency include: The major contributing activity to Umgeni Water’s • Water treatment process audits, which identify carbon footprint is from indirect emissions - areas to improve operational effi ciency, electricity consumption and implementing energy • Monitoring and reviewing seasonable variations effi cient measures would therefore contribute to the in the quality of the water column in dams, such reduction of the carbon footprint. that raw water abstracted is optimal for treatment, and Current initiatives to reduce the organisation’s • Participating in catchment management carbon footprint include development of an activities and forums, and contributing to electricity co-generation plant at the Darvill the information base, including water Wastewater Treatment Works. The energy quality, which helps shape and infl uence generation system will comprise a biogas pre- decisions for sustainable catchment land-use treatment unit and two generators. The plant will activities and developments. utilise the methane gas generated in the bio- digesters to produce electricity. Preliminary studies Figure 9.5: Chemical Usage and Effi ciency Trends indicated that approximately 40% of the total energy requirement of the wastewater treatment 0.021 works can be generated from this source. 0.020 0.020 0.019 0.019 Electricity is used for pumping raw water from various resources to treatment plants, during treatment in treatment processes, and during pumping of bulk potable water product to customer points. 8.5 8.2 8.7 8.8 7.8 Umgeni Water also implements on-going carbon offsetting initiatives which include: • On-going tree planting initiatives during the year, 2009 2010 2011 2012 2013 and • Implementation of the Darvill artifi cial Chemical usage in million kg wetland project. Chemical usage (kg) per cubic metre of product

Table 9.2: CO2 Equivalents (tonnes) CARBON FOOTPRINT AND EMISSIONS CO 2010 2011 2012 2013 REDUCTION INITIATIVES 2 equivalents Umgeni Water’s direct CO emissions arise from 2 (tonnes) fuel usage for transport (vehicles), general waste per activity and from generators and boats, while indirect CO2 emissions are primarily due to electricity usage, and Electricity 131 851 163 392 208 071 153 280 to a minor extent fl ights. Travel: Car 1 407 1 334 2 086 137 Travel: Air 143 143 81 71 Waste 989 299 262 196 Other fuel 40 40 98 82 Total 134 430 165 064 210 598 153 766

ANNUAL REPORT 2O12/2O13 77 BIODIVERSITY MANAGEMENT Umgeni Water has developed a biodiversity management strategy with the view to establishing the biodiversity status of Umgeni Water’s operational areas as well as highlight areas of high conservation status. On-going biodiversity management activities being implemented include: • Biodiversity management being implemented by Msinsi Holdings, • Biodiversity Impact assessment as a component of EIAs, • Alien and aquatic vegetation control, • Management for listed tree removals during construction of new infrastructure, and • Bio-monitoring of river systems.

Biodiversity Impact Assessment as a component of EIA’s Umgeni Water has thirty-four (34) projects in various Grassland with the endangered Hypoxis (Wild phases of planning, design, construction and Potato), Watsonia and Moraea on the Richmond rehabilitation. Mitigation for a key pipeline project Pipeline project (see case study) and Barringtonia constructed through a protected area, the Bill racemosa on the Hazelmere to Bifurcation pipeline. Barnes Nature Reserve, required construction to be limited to existing pipeline servitude. Threatened Biodiversity aspects are being determined on a and endangered species were identifi ed on fi ve further fi ve (5) projects in the planning / design (5) projects including Boscia albitrunca in the phases. Mitigation measures carried out include Ngcebo WTW upgrade, Hypoxis hemerocallides design considerations to avoid rare species, and Crinum macowanni on the Lower Thukela BWSS, amendment to the procedure for excavation (see Drakensberg Moist Foothill Grassland species which case study), plant rescue and minor re-routing support the endangered Oribi and Wattled Crane during construction to avoid listed endangered on the Mpofana BWSS project, Midlands Mistbelt tree species.

CASE STUDY: RICHMOND PIPELINE DEVELOPMENT. a decision to protect the site as best as possible The construction of a pipeline from Pietermaritzburg was taken. to Richmond began in March 2013. During the preliminary inspection of the working servitude by With the onset of winter the topsoil was removed the Contractor’s rehabilitation specialist an area of in the form of sods and stored with the least Midlands Mistbelt Grassland which was observed disturbance as possible (c). The pipe was then laid as being rich in forbs and dominated by Themeda and covered immediately and the topsoil was triandra and transformed by Ngongoni grass returned as close as possible to the site from which it (Aristida junciformis subsp. junciformis) was identifi ed was removed. (a). This grassland has high species biodiversity and is listed as threatened. Several species which are The sods are then set in place by hand and bulbs considered to be of conservation concern including planted and turned upwards to promote growth. Hypoxis (Wild Potato), Watsonia and Moraea Once completed, the area will be seeded with species were observed (b). rapidly growing grass to protect the exposed soil from erosion. The rehabilitation of this area is The area was deemed as worth conserving and in planned to be completed prior to the expected conjunction with the Rehabilitation Specialist, summer rains.

(a)An area of Midlands Mistbelt (b) One of the Moraea species (c) Top soil removed prior to Grassland, dominated by forb- fl owering in the adjacent excavating the pipeline rich, tall, Red Grass Themeda grassland. trench- note large sods which triandra grasslands transformed will be reset once pipeline is by Ngongoni grass. completed.

78 UMGENI WATER • AMANZI Alien Plant Management of the eight (8) dams monitored, were successfully Umgeni Water continued to implement the Working- taken and analysed. In most cases, despite the for-Water programme as an implementing agent to minor differences seen between the downstream the Department of Environment Affairs, for the Mvoti and upstream points, downstream river health was to Mzimkhulu Water Management Area (WMA). maintained. In one case, the Mzinto dam, the river In 2012/2013 Alien plant clearing was undertaken in health below the dam was vastly better than that several catchment areas, clearing in excess of three upstream due to impacts upstream from urban thousand, fi ve hundred and seventy-six hectares development. (3 576 Ha) of alien weeds. Alien vegetation cleared included ten (10) of the most prolifi c alien weed MSINSI HOLDINGS LAND AND SUSTAINABLE species infesting the areas including: RESOURCE MANAGEMENT • Upper Mgeni – project starts at the source of the Msinsi Holdings (Pty) Ltd, a wholly-owned subsidiary Mgeni River and ends when it meets the Lions of Umgeni Water is mandated to manage the land River Project: 258.72 Ha cleared, and biodiversity of the areas around the dams • Project – project starts at a district owned or managed by Umgeni Water in a way that road linking Dargle and Nagle Dam and ends at balances the divergent factors of local community Midmar Dam: 798.35 Ha cleared, development, provision of recreational facilities • Mgeni Valley Project –project starts at Midmar for the public and water resources/biodiversity Dam and ends at Albert Falls Dam: 622.09 Ha protection. cleared, • Nagle Project –project starts at Albert Falls Dam These reserves are located at: and ends at Nagle Dam: 652.16 Ha cleared. • Albert Falls Dam, • Karkloof Project –: 630.75 Ha cleared, • Nagle Dam, • Mvoti Project - encompasses a large part of • Inanda Dam, Greytown: 327.07 Ha cleared, and • Shongweni Dam, and • Midmar Project – This starts at Midmar Dam and • Hazelmere Dam. ends at Albert Falls Dam: 287.07 Ha cleared. Detailed management plans for each of the Monitoring of and reporting on seven (7) strategic reserves, in line with industry best practice, have water resource areas for the prevalence of fl oating been completed and form the basis for all aquatic weeds was undertaken in the year. Areas operations in the reserves. In the past year, Msinsi monitored include the Mgeni River at Midmar dam, has been successful in protecting the habitats and Albert falls dam and Inanda dam, Msunduzi river ensuring an ecologically sustainable and protected from Pietermaritzburg to the confl uence with the water environment through implementing its Mgeni River, Mpushini stream, Ixopo dam and resource management plan, which focused on: EJ Smith Dam. • The management of the game and species according to the carrying capacity of Category 1 alien invasive weeds including Water each reserve, hyacinth, Water lettuce and Kariba weed were • Local community development, observed in the water bodies visited. In the • Recreation for the public, previous reporting period the spread of Water • Grassland management, Hyacinth in the Msunduzi/Mgeni River system posed • Control of pollution inside the purchase areas, a serious threat to Inanda Dam. To address the and fragmented approach to weed management • Removal of alien invasive plants, both terrestrial an aquatic weed working-group (AWW) was and aquatic. established consisting of all role players. The objective of this group was to promote sustainable Msinsi Holdings continues to be seen as a signifi cant control and reduce costs. The AWW began mass player in the conservation and tourism sector in releases of the biocontrol agent and chemical KZN. The close proximity of the Reserves managed control in summer of 2012 into heavily infested by Msinsi Holdings to the urban centres of Durban areas of the Msunduzi/Mgeni River resulting in a and Pietermaritzburg make these little pockets of marked decrease in plants numbers which has biodiversity all the more valuable. Msinsi Holdings been maintained to this period. The success can will continue to ensure that the ecosystem services be clearly seen as the canoeists in the various provided by the resources it manages on behalf of canoe marathons held in this period enjoyed clear Umgeni Water are sustainably managed. passage to Inanda dam.

SASS monitoring of river systems by UW The South African Scoring System 5 (SASS 5) hydro- biological assessment tool was used to assess the river health above and below the dams managed by Umgeni Water to assess the impact of impoundment on our water resources. Twenty-fi ve (25) samples upstream and downstream

ANNUAL REPORT 2O12/2O13 79 WASTE MANAGEMENT Umgeni Water continued to work on initiatives The tracking of waste generated, disposed of to comply with the National Environmental and recycled at Umgeni Water is undertaken Management Waste Act (NEMWA 58 of 2008) and at operational areas to varying extents with the associated regulations that have recently been progressive improvement in monitoring and promulgated: evaluation systems each year. • Umgeni Water as a hazardous waste generator complies with the requirements of the new South The generation of hazardous waste has increased African Waste Information System (SAWIS), in the past year while the generation of domestic • A project is under way to have all Water (general) waste has decreased. (Figure 9.7 (a)) The Treatment Works residues classifi ed, increase in hazardous waste is attributed to the • Waste Management training was undertaken for Wiggins and Msunduzi systems, the latter system all SHEQ offi cers and environmental scientists for which now also captures the data for hazardous development of site waste management plans, waste from the Darvill, Howick and Ixopo WWTWs. and • A feasibility for developing a new disposal site Figure 9.7 (a) Waste Produced in the coastal system for the disposal of water treatment works residues will commence in 3 General Waste (kg per mil m ) 2013/2014. This initiative will contribute toward 3 Hazardous Waste (kg per mil m ) additional recycling and reuse of Umgeni Water waste.

ENVIRONMENTAL PERFORMANCE 298 OF THE OPERATIONAL SITES 464 413 The organisation continues with the implementation of environmental management at all operational 1225 sites and implements recommendations from the 1043 964 previous period’s environmental audits which: • Assess whether the site is complying with all relevant environmental legislation, • Assess internal policy and procedural 2011 2012 2013 compliance, Currently a small percentage of general waste • Assess the status of energy, waste and is recycled and this has increased from 0.13% in biodiversity management at the site, and 2011 to 0.44% in 2013 (Figure 9.7 (b)), overall for • Recommend management. the organisation. Some sites are more successfully, e.g the Midmar system recycles 19.5% of its For the period under review, thirty-four (34) sites waste. To improve recycling for the organisation, were audited to assess environmental compliance Umgeni Water has appointed a co-operative who and management. Common and major fi ndings commenced work in June 2013. included: • Presence of aquatic alien weeds in some water Figure 9.7 (b) Waste Recycled resource impoundments, • Terrestrial alien plant infestation, • Inadequate waste separation and management, • Challenges with quantifi cation and Per cent recycled environmentally acceptable disposal of water treatment residues, and 0.44% • Hydrocarbon spillages. 0.13% 0.20% An environmental legal compliance law expert is 2011 2012 2013 being contracted to update the organisation’s environmental legislation register, which will be used to increase education, awareness and environmental management at all levels.

80 UMGENI WATER • AMANZI ENVIRONMENTAL INCIDENCES DURING THE In compliance with the regulations emanating FINANCIAL YEAR OF 2012/2013. from the National Environmental Management Act, Incident management systems are in place to some projects required a basic assessment or a ensure that pollution is properly responded to. scoping and full environmental impact assessment A number of incidents did occur, but were study to be conducted. Over and above this and minimised and mitigation undertaken. Monitoring in keeping with environmental legal compliance, was conducted to assess possible impacts, and for projects not triggering listed activities under where relevant, responsible authorities were kept the act, the organisation continued with its informed. The most severe incident was cracking commitment regarding excellent environmental of a valve in the North Coast which damaged the practise of conducting a screening assessment La Mercy reservoir and resulted in the uncontrolled and developing an internal project specifi c rapid release of 2.5 Ml of potable water. The environmental management plan to address any resultant scour of Tongaat Hulett sugar farm potential environmental impacts and devising property was severe and the eroded soils were mitigation measures for implementation. deposited on an adjacent farm impacting on a vegetable farming enterprise. To date, no fi nes were issued for non-compliance and the organisation has been fully compliant Integrated Environmental Management with the act with no negative relations with the There are fourteen (14) projects in the planning, authority and will continue to keep a close working design or procurement phase currently being relationship. Table 9.3 shows some key capital managed through the Integrated Environmental projects that require environmental authorisations. Management system.

Table 9.3: Bulk Infrastructure Projects that will require environmental authorisations:

Project name Requirements East Coast Desalination Obtain EA Greater Mpofana Regional Scheme Amend existing EA Lower Thukela BWSS Amend existing EA Midmar WTW, Sludge Plant and Raw Water Pipeline Upgrade Obtain EA Nungwane Raw Water Aqueducts Obtain EA Ngcebo WTW Upgrade Obtain EA Darvill Wastewater Treatment Works Upgrade Obtain EA uMshwathi BWSS Amend existing EA

Thirteen (13) projects currently in construction phase are monitored for compliance against the Environmental Management Plans by independent external Environmental Control Offi cers, Environmental Site Offi cers and Environmental Scientists as per the conditions of the environmental authorisations.

Overall environmental performance has been satisfactory with minor challenges in implementation of rehabilitation, prevention of hydrocarbon and cement spillages, waste management and management of alien plant invasion. The organisation will continue to strive for good environmental practice and management of these challenges.

ANNUAL REPORT 2O12/2O13 81