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Revised Schedule of Fees for Applications made to the South African Heritage Resources Agency (SAHRA)

Kloof Nek WTW pipeline

CaseViews

CaseHeader

Status: 

HeritageAuthority(s): 

Development Type: 

ProposalDescription: 

It is proposed to construct a pipeline to carry residues from the Kloof Nek Water Treatment Works (WTW) down the hill below the WTW and into the Camps Bay sewage system. The route crosses land owned by the City of Cape Town as well as land owned by South African National Parks. Western Cape.

Expanded_Motivation: 

The Kloof Nek Water Treatment Plant (KNWTP) is located on the property of the City of Cape Town, within the Table Mountain National Park. It is situated on the western slopes of Table Mountain above Camps Bay and services Camps Bay, Sea Point and the upper regions of the City Bowl with potable water. The KNWTP is owned and operated by the City of Cape Town and by virtue of its age, the building is a working monument. The treatment of the raw water involves dosing it with coagulant (aluminium sulphate and sodium aluminate) which results in flocculation and settlement of the solids in the settling tanks. These settled solids, i.e. the residue, are drawn off twice a day and flow via an open channel into the Diepsloot stream, into the stormwater system and then out to sea. The residue contains organic compounds bound with aluminium salts and silt etc. The residue is regarded as unacceptable for discharge to an open water course and must be discharged by other means viz. to the sewer system. The residue disposal is currently being carried out at night to minimise the visual impact of the brown patch that forms in the sea at the outlet of the stormwater pipe near Camps Bay tidal pool or on the beach when there are high stormwater flows. The City of Cape Town is required in terms of the Management of Urban Stormwater Impacts Policy (2009) to upgrade the residue disposal system. It is planned to construct a holding tank on a suitable site adjacent to the plant and lay a pipeline down the mountain side to connect with the sewer network. The holding tank will attenuate the flows into the proposed pipeline which is to link into the sewer in Dal Road, Camps Bay. The water treatment residue will then be pumped out to sea via the Camps Bay Marine Outfall Sewer. This may also necessitate the upgrading of sewer capacity in parts of Camps Bay. The proposed pipeline would connect to an existing valve outside of the main building of the Plant and thus there will be no impact to the structure itself. It is proposed to remove the remaining ruins of the old caretaker/manager's house just below the plant and utilise the platform for construction of the holding tank. The pipeline would be supported on low brick piers, although where granite boulders exist along the route the pipe will be bolted to the boulders to reduce the amount of construction work. The last section above Camps Bay Drive (M62 will follow the existing footpath and this section will be buried beneath the path to reduce visibility from the road. Since most of the project falls within the boundary of the Table Mountain National Park, it will be necessary to undertake an environmental assessment as well as a heritage impact assessment. The environmental body that will need to approve this process is the Department of Environmental Affairs (DEA). Previously a Record of Decision was issued by the then Department of Environmental and Cultural Affairs and Sport (December 2001). Since construction didn’t commence within the stipulated two years, the ROD has now lapsed and therefore the application needs to be resubmitted.

ApplicationDate: 

Thursday, December 15, 2016 - 10:50

CaseID: 

10514

OtherReferences: 

DepartmentApplicationType

ReferenceList: 

 
 

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