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Petra Diamonds Limited Sustainability Report 201235ENVIRONMENTAL PERFORMANCEEnvironmental PerformanceProtecting our environment continuedLand management and biodiversity continuedProtected habitats OperationHabitat descriptionSize in HaCullinanGame farms1,800 plus 800Finsch Game farms 1,410 plus 498KoffiefonteinGame farm 2,000Kimberley UndergroundNonen/aHelamGame farm n/aSedibengNonen/aStarNonen/aWilliamsonWilliamson Forest Reserve and Old Golf Course906BotswanaNone n/aEnvironmental Impact Assessments and permitsPrior to commencing operations, all mines are required to undertake Environmental Impact Assessments ("EIAs") and receive the appropriate permits for water usage. During FY 2012, assessments and permits were required for the following locations:$ Cullinan received a licence for the closure of the Village of Cullinan Landfill Site; application was made during FY 2012; $ Koffiefontein identified the need to complete a Basic Assessment for the Ebenhaezer Pit Expansion project, which is scheduled for FY 2013; and$ Petra Diamonds Botswana undertook an EIA for its exploration activities and a permit was awarded. No water use licences were approved/issued during FY 2012. Rehabilitation and closure plans At present 176 hectares of the approximately 5,800 hectares of land disturbed by Petra's operations are undergoing rehabilitation and a further 340 hectares have already been rehabilitated. Concerted measures are in place to improve these efforts by developing rehabilitation strategies for all our operations.All of our mine sites are developing closure plans to protect the long-term viability of the land after mining operations cease. Our South African operations successfully revised and updated their Environmental Closure Liabilities in line with the requirements of the MPRDA during FY 2012. A closure plan for Williamson is also in place.Amount of land disturbed or rehabilitatedOperationTotal area disturbed (hectares)Total area considered as rehabilitated duringFY 2012(hectares)Cumulative area rehabilitated(hectares)Cumulativeareaundergoingrehabilitation(hectares)Total areastillrequiringrehabilitation(hectares) Finsch 1,818.217.6114.2163.0786.8Cullinan1,642.06.00.06.01,636.0Koffiefontein1,642.00.00.06.01,636.0Kimberley Underground378.90.00.00.0378.9Helamn/an/an/an/an/aSedibengn/an/an/an/an/aStar246.00.00.00.0246.0Botswana3.00.2¹0.20.03.0Williamson325.6215.4215.41.2110.2Note:1. 500m of 4x4 tracks rehabilitated. Environmental auditsAll our operations are subject to regular internal and external environmental audits. There are four types of audits performed at Petra:$ Legal Compliance Audits undertaken by external specialists every two years;$ EMP Performance Assessments, at our South African operations, are carried out by external specialists. The frequency of these assessments is determined by the commitments and agreements of each operation with the Department of Mineral Resources ("DMR"). Petra's policy for each operation is to have an audit at least once every two years. Most of the operations combine the Performance Assessments and Legal Compliance Audits; $ Internal Environmental Management Audits performed internally on an annual basis; and $ External ISO 14001 Audits performed by the certification body on certified operations at least once per year.

Petra Diamonds Limited Sustainability Report 201236ENVIRONMENTAL PERFORMANCEEnvironmental PerformanceProtecting our environment continuedEnvironmental audits continuedThe table below summarises the audits carried out in FY 2012 and the main outcomes. OperationAuditOutcomeCullinanInternal EMSA number of opportunities for improvement were identified and actioned in preparation for the external audit. External ISO 14001 (recertification) Successful recertification.FinschLegal ComplianceA number of non-conformances were identified. The action plans to address these issues are in various stages of implementation.EMP Performance AssessmentIt was identified that an update to the current document is required. The mine is in the process of drafting an updated EMP.Internal EMSA number of repeat findings were identified. The mine is implementing action plans to address the identified non-conformances. External ISO 14001 (recertification)Successful recertification.KoffiefonteinLegal Compliance and EMP Performance Assessment This was the first time the mine had such an audit and a number of issues were identified to receive attention. Most of the areas identified during the audit will require long-term plans to rectify. Kimberley UndergroundLegal Compliance and EMP Performance AssessmentThis was the first time the mine had such an audit and a number of issues were identified to receive attention. Most of the areas identified during the audit will require long-term plans to rectify. WilliamsonLegal Compliance and EMP Performance AssessmentIn 2006 a comprehensive external audit was carried out. Annual internal on-mine audits take place and issues raised are identified and addressed. Negotiations have started to conduct the next comprehensive audit to meet regulatory requirements.Waste managementThe effective management of waste is an environmental priority for Petra. The Group has implemented procedures to assist with waste management and disposal and regularly monitors these procedures. We recycle waste generated at our operations wherever possible. Waste management presents a number of challenges for our operations, including sourcing suitable waste handling contractors in the Northern Cape Province in South Africa and finding solutions regarding waste tyre recycling across our operations. Total weight of waste by type and disposal methodWaste generatedUnitFinschCullinanKoffiefonteinKimberley UndergroundHelamSedibengStarWilliamsonCans sent for recyclingt00.300.20000Cardboard/paper sent for recyclingkg3,8003,1601,3609780000Conveyor belting sent for recyclingt74321.160000Glass sent for recycling t00000000Lead acid batteries sent for recycling/re-useunits32115402710009Plastic sent for recycling/re-uset044000000Scrap metal sent for recyclingt4699592863377903045Toner/ink cartridges sent for recyclingunits15000290000Tyres sent for recyclingunits03800275000150Used oil/grease sent for recyclingl42,89854,040012,035020,400012,000Hazardous waste disposedm3642161140500Non-hazardous waste to landfillm31,186211401,61810801,0405,400Waste incineratedm33812000000500The following table indicates the total areas of depositions on the various mines: Land disturbance typeUnitFinschCullinanKoffiefonteinKimberley UndergroundHelamSedibengStarWilliamsonArea of pitsHa 574153103004146Area of excavationsHa0-00004146Area of overburden dumpsHa30 -0000520Area of waste rock dumpsHa208 81180488.86360Area of fine residue depositsHa621 339152 1751112.271732Area of coarse residue deposits Ha1782751401011719.391185Area of ore stockpiles Ha01780005Area of infrastructure Ha80 51152 n/a27n/a141,600