Heritage Cases

The SWMP includes the following proposed facilities: • Pollution Control Dam (“PCD”) 1: o PCD 1 will be constructed south of the existing Storm Water Control Dams (Dam 1 and Dam 2) (“SWCD”). This facility will be constructed to contain affected water runoff from the VUP surface area, crusher area, main offices and workshops, and will have a capacity of 120 000 m3. PCD 1 is approved within the current approved Environmental Management Programme for Proposed Underground Operations and EMP Consolidation for Existing Operations at De Beers Consolidated Mines, Venetia Mine, Limpopo Province, dated 2012 and prepared by Environmental Resources Management, DMRE reference number: LP30/5/1/2/3/2/1/58/EM (“approved EMPr”) and is licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111). However, changes to the design and capacity of this facility have occurred since the mentioned approvals. A Water Use Licence (“WUL”) application will also be submitted for the proposed activity. • PCD 2: o PCD 2 will be constructed to the north-west of the plant area (south-east of the FRD 1 RWD). This facility will be constructed as a containment facility and will only receive water as removed from the opencast pit, underground operation and other facilities where capacity is required. PCD 2 will have a capacity of 130 000 m3 and is approved within the current approved EMPr and is licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111). However, changes to the design, capacity and location of this facility have occurred since the mentioned approvals. A separate WUL application will be submitted for the proposed activity. • PCD 1 Compartment 4B: o PCD 1 Compartment 4B will be constructed as a containment facility and will only receive water as removed from the opencast pit and underground operation. PCD 1 Compartment 4B will have a capacity of 34 000 m3. PCD 1 Compartment 4B is approved within the current approved EMPr and is licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111). However, changes to the design and capacity of this facility have occurred since the EMPr approval, but is correct within the IWUL. • Fine Residue Deposit (“FRD”) 1 Return Water Dam (RWD”) expansion: o FRD 1 RWD is an existing facility, approved within the EMPr and licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111), that will be expanded by raising the dam walls by 3 metres (expansion not included in the current EMPr and IWUL). The facility currently receives water from the FRD 1 penstock and a small portion of the upstream catchment adjacent to the opencast pit. The current capacity of FRD 1 RWD is 40 000 m3 and will be expanded to a capacity of 130 000 m3. A separate WUL application will be submitted for the proposed activity. • On-mine Water Storage Dam (“OMWSD”) North and South compartment expansion: o The On-mine Water Storage Dam (“OMWSD”) North and South Compartments are existing facilities, approved within the EMPr and licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111), whereby the capacity of the facility will be increased by raising the dam walls by 2 metres and increasing the capacity by 190 000 m3 (expansion not included in the current EMPr and IWUL). This will increase the current combined capacity of 460 000 m3 to 650 000 m3. The OMWSD Dams only receive water from the opencast pits, the plant and the Well Fields. A separate WUL application will be submitted for the proposed activity. • OMWSD Compartment 3: o OMWSD Compartment 3 is a new proposed facility that will be constructed north of the OMWSD North Compartment. This facility will be constructed to contain water from opencast pits, the plant, the underground mine and the Well Fields. OMWSD Compartment 3 will have a capacity of 275 000 m3. This is a new facility it is not included in the current EMPr and IWUL. A separate WUL application will be submitted for the proposed activity. • OMWSD Compartment 4: o OMWSD Compartment 4 is a new proposed facility that will be constructed to the south-east of the OMWSD North and South Compartments and will occupy a portion of the area of the Attenuation Facility (licensed facility). This facility will be constructed to contain water from opencast pits, the plant, the underground mine and the Well Fields. OMWSD Compartment 4 will have a capacity of 185 000 m3. This is a new facility it is not included in the current EMPr and IWUL. A separate WUL application will be submitted for the proposed activity. • PCD 3: o PCD 3 is the main containment facility proposed for the SWMP and will be the first facility to be constructed to de-risk the VUP and ensure compliance to the requirements of GN.R 704 and to ensure compliance to Section 19 (Duty of care) of the NWA. PCD 3 will be constructed to the west of the mine adjacent to the Course Residue Deposit (“CRD”). This facility will be constructed to contain affected water runoff from the upstream catchments inclusive of runoff from the CRD, FRDs and potential overflow from the other upstream water containment facility. The facility will also be constructed to contain water as removed from the opencast pits and the VUP underground workings. The facility will have a capacity of 1 050 000 m3. PCD 3 is authorised within the current approved EMPr and is licensed by the IWUL (Licence No.: 14/A63E/ABCGIJ/5111). However, changes to the design, capacity and required footprint of this facility have occurred since the approvals and such changes will require authorisation. A separate WUL application will be submitted for the proposed activity. • K03 Pit: o K03 Pit is an existing opencast pit. As the ore reserves associated with K03 Pit have been mined out, it is proposed to use K03 Pit as a water containment facility with mine water as removed from the VUP underground mine pumped to K03 Pit before being pumped to the other facilities for containment and reuse. K03 Pit has the capacity to contain 3.5 Mm3 of water, however, it is anticipated that a volume of 780 000 m3 of water removed from underground will be stored within the pit. This proposed activity is not authorised. A separate WUL application will be submitted. • Mine water discharge: o Venetia Mine proposes to discharge surplus water to the receiving environment during extreme rainfall events and only when there is insufficient storage capacity, not only as means of managing surplus water but also to ensure safety in the underground workings of the VUP. Current storm water runoff modelling and water balance assessments indicate that a total volume of 792 000 m3 may be required to be discharged annually. As indicated, the discharge of affected water will only be conducted should there be insufficient capacity and in accordance with the relevant approvals (Environmental Authorisation and WUL). Should such a discharge occur, the discharge will occur from PCD 3 and / or the OMWSD. A separate WUL application will be submitted for the proposed activity. • Relocation of the mine boundary security fence, upgrading of southern access road and re-routing of 22 kV powerlines (including sub-stations): o Mine security fence - As PCD 3 will extend beyond the current Venetia Mine security fence, it is required to relocate the security fence around the boundary of PCD 3. o 22 kV powerline - A 22 kV mine powerline traverses the proposed PCD 3 area that will require relocation to direct the powerline around PCD 3. Sub-stations will also be made available. o 22 kV powerline - A 22 kV mine powerline traverses the proposed PCD 1 area that will require relocation to direct the powerline around PCD 1. Sub-stations will also be made available. o Southern access road – The southern access road will be upgraded and expanded to a 10 m wide road (currently 4 m wide) to provide access of construction vehicles to the proposed PCD 3 locality. • Construction storm water management infrastructure including channels and trenches: o Storm water management infrastructure, inclusive of channels and trenches will be constructed to divert affected water runoff to the existing and proposed above-mentioned facilities. o Venetia Mine proposes to construct a seepage collection trench along the western boundary of FRD 1 and FRD 2 to collect any seepage that may occur from the FRDs and direct such to either the North Seepage Dam, FRD 2 RWD or the Southern Seepage Collection Dam (existing facility). The Southern Seepage Collection Dam can discharge to PCD 3. o Venetia Mine also proposes to construct a Northern Seepage Collection trench that will collect seep from the waste rock dump to the north of the mine. The collected seep water will be pumped to FRD 2 RWD for containment. • Provision of pipelines and pumping systems: o Pump stations will be constructed, and a pipeline network established to allow for efficient water reticulation and re-use of water.