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

110August 2010 8848Additional ImpactDuring the operational phase the impacts described in section 11.1.1 will persist, but theconstruction vehicles will be replaced with the vehicles transporting the waste to the site withthe potential to generate hydrocarbon spillages. In addition, an increasing volume of wastewill be placed on the waste disposal site. An indirect impact from the waste disposal site willbe the formation of leachate that will pollute the underlying soils. It should be noted that thisimpact describes the unmitigated scenario. All these impacts are rated as a HIGH negativeimpact occurring in the study area and acting in the long term. This impact will occur and istherefore rated as a High impact. This impact rating will be the same for all three alternativesbut due to the smaller footprint from Alternative 3, this is the preferred alternative.Cumulative ImpactThe cumulative impact during the operational phase remains as assessed in the constructionphase since the additional impact and the initial impact occur in the same area. Thereforethe impact remains a High impact.Mitigation MeasuresThe mitigation measures remain as assessed and recommended in Section 11.1.1 above.Residual ImpactThe residual impact with the successful implementation of the mitigation measuresmentioned above will be slightly less significant as the probability reduces. Therefore therating reduces to Moderate. This is relevant for all the phases. This impact rating will be thesame for all three alternatives but due to the smaller footprint from Alternative 3, this is thepreferred alternative.Table 34: Impact Rating Matrix for Soils (Alternative 1-3).Type of Significance Spatial Temporal Probability RatingImpactInitial VERY HIGH Study site Long Term Is Occurring 3.7- HighAdditional HIGH Study site Long Term Will occur 3.3- HighCumulative HIGH Study site Long Term Will occur 3.3- HighResidual HIGH Study site Long Term Very Likely 2.7- ModerateZITHOLELE CONSULTING