FEIR for Boitshepi Landfill Site .pdf - Zitholele.co.za

77August 2010 88489.2.1 Extension of the existing siteInitially a strip of land adjacent to the northern toe of the existing waste body is to bedeveloped together with the shaping and capping of the existing waste body. The area to belined consists of the area north of the existing waste body up to the 50 metre buffer zonefrom the adjacent land users or concrete palisade fence (approximately 8.5 ha). The footprintof the extension needs to be prepared prior to the capping of the existing waste body inorder to ensure that disposal needs are not interrupted during construction.The footprint of the extension will be lined with a GLB + liner as per the MinimumRequirements. The only discrepancy between the Minimum Requirements and the designsprovided is that the 600mm clay liner will be replaced by a GCL. The reason for this is thatthere are no clay soils available in the area and it would be more costly to import soil fromanother source. The liner will be placed along the slope of the existing waste body and alongthe foot of the site. The liner will be anchored on the slopes approximately 1.5 metresupslope of the top of the existing was body. The anchor will comprise of concrete (Figure25).1.5 mLinerConcreteFigure 25: Anchoring of the slope liner.Once the liner is in place the construction of the capping of the existing waste body can takeplace.9.2.2 Capping of the existing waste bodyOnce the extended portion of the waste site has been lined the capping of the existing wastebody can be undertaken. The portion of the waste site that will be capped once the liner is inplace is approximately 19 ha to a maximum height of 1495m.9.2.3 Leachate collection and detectionThe waste disposal cells are to be developed adjacent to the northern side of the existingsite with the contaminated water and leachate collection draining downslope to the southZITHOLELE CONSULTING