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Water treatmentTransforming a liability into an assetAnglo Coal South Africa approved R296 million capital for theEmalahleni water treatment plant. This was on the back of apublic/private partnership agreement involving Anglo Coal andpossibly Ingwe collieries, and Emalahleni local municipality. Thisplant will treat 20 Ml/day of colliery water, which will be suppliedto the municipality to supplement its domestic water supply. Theplant is expected to meet 20% of the municipality’s daily requirement.The full-scale reclamation plant will occupy one hectare ofsurface area on an eight hectare site allocation at Greensidecolliery. The treated water, of potable quality, will be stored in twowater reservoirs before being conveyed via a pump station andpipeline to the Emalahleni municipal reservoirs for distribution toconsumers. The collection and distribution pipelines to and fromthe plant will measure 40km.The waste produced from the water treatment process will bedisposed of in an environmentally responsible manner. The wastedisposal facility will be located on mine owned land and may beincorporated into existing mine residue deposits.The proposed project will generate between 100 and 150temporary jobs during construction of the treatment plant andpipelines and about 25 permanent positions, to be sourced largelyfrom local residents.26
Above: Joseph Thibles, anoperator at the Kromdraailiming plant, tests waterfrom the old undergroundworkings and pit.Above left: Developmentof the Emalahleni waterreclamation project’s125m 3 /day desalinationdemonstration plant and,below, an aerial view ofthe Emalahleni watertreatment plant underconstruction.by the DWAF. During the year, the colliery alsoreceived permission from the DWAF to increase itswater pumping capacity from other undergroundsources to 20Ml/day.Limited rainfall during the previous two wetseasons has resulted in low flows in the Olifantsriver. As a consequence, the river has had noassimilative capacity and no controlled releasesfrom the collieries have been permitted by theDWAF during 2005.BiodiversityBaseline biodiversity action plans (BAPs) havebeen developed and implemented at all operatingcollieries.Anglo Coal South Africa nominated itsGoedehoop and Kriel collieries for an AngloAmerican plc BAP peer review. The main findingsof this review were:oooobiodiversity management requires the formalallocation of biodiversity conservationresponsibilities to colliery staff;there is a need for better stakeholderengagement;internal audits and external verification of theseneed to be implemented; andthe need to develop a stronger business casefor biodiversity conservation.The lessons learned from this review processwill be implemented at all operations during 2006.Land rehabilitationAnglo Coal South Africa has about 106,000hectares under its charge, including land leased andowned. Of this land, 14% has been altered bymining activities, and of this altered land 11% hasbeen fully rehabilitated. Although the division begana colliery closure fund as early as 1972, ongoingrehabilitation is provided for in working costs.Greenhouse gas emissionsThe National Environmental Management AirQuality Act (Act 39 of 2004) was partiallyimplemented on 11 September 2005. Through thisAct, the Vaal Triangle area (which includes NewVaal colliery) has been declared a priority airpollution area by the Minister of EnvironmentalAffairs and Tourism. This is expected to placepressure on all industrial sectors to reduce pollution.Carbon dioxide and methane are the twogreenhouse gas elements with which the divisionis most concerned. Basic emissions statistics areprovided in the table below.C0 2 from source in tonnes2004 2005CO 2 e production fromelectricity purchased 725,000* 773,000CO 2 e production fromprocesses and fossil fuels 121,000* 165,000CO 2 e productionfrom methane 298,000 232,000Total CO 2 eproduction 1,144,000 1,171,000* These figures have been restatedMethane emissions> South African coalgenerally has a lower methane content than coalfrom European and Australian coalfields. This wastaken into account in 2001 when the methanelevels were predicted using the IPCC guidelines.As no reliable tool has been available for the quantificationof actual emissions, three investigations wereundertaken during 2004/2005 to quantify methaneemissions from normal operations at the collieriesand from spontaneous combustion.The three studies found that:omeasured samples of methane emissionswere far lower than those estimated usingthe IPCC guidelines;27
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