Noise and Vibration Report - Transnet

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ENVIRO-ACOUSTIC RESEARCHSCOPING NOISE REPORT – TRANSNET: SWAZI RAIL LINK – DAVEL YARD TO NERSTON RSA ROUTE7 RESULTS AND PRELIMINARY IMPACT ASSESSMENT7.1 CONSTRUCTION PHASEProjected impacts from the construction phase can only be modelled once moreinformation regarding the duration of construction and equipment used are known.Therefore the construction phase will only be dealt in more detail during theEnvironmental Noise Impact Assessment phase.For the purpose of the Scoping phase the impact that traffic may have on thesurrounding noise environment are excluded, only to be considered during the EIA phase.7.2 OPERATIONAL PHASE: ESTIMATED IMPACT AND IMPORTANT CONCEPTSThe average noise levels will significantly depend on the total number of activities thattakes place during the reference period, the distance of receptors from the railway line,speed of the train line section under investigation as well the existing ambientsoundscape around receptors. The conceptual design highlights a potential 12 trains perdirection per day (8 trains per direction per day considering practical train slots – at65%) for the first phase and doubles that after the implementation of the second phase.A basic estimation if projected noise levels indicated increased noise levels due to the tothe operation of the railway line within an area of up to 420 meters from the railway line.Desktop investigations have indicated over a hundred possible receptors within 500 mproximity to the proposed Swazi Rail Link layout (existing and proposed rail line). Thereis sufficient information to conclude that the operation of the Davel to Nerston railwayline could have a potential noise impact of significance warranting further investigationduring the Environmental Noise Impact Assessment.P a g e | 39
ENVIRO-ACOUSTIC RESEARCHSCOPING NOISE REPORT – TRANSNET: SWAZI RAIL LINK – DAVEL YARD TO NERSTON RSA ROUTE8 CONCLUSIONS AND RECOMMENDATIONSThis report is a Scoping assessment of the potential noise environment due to thedevelopment of the proposed Davel to Nerston railway line based in the Republic ofSouth Africa. This report is a desktop assessment taking into considering availableinformation.This assessment indicated that the proposed project could have an impact of significanceon the noise climate of the surrounding area as there are Noise-sensitive developmentswithin the area of influence of the railway line. The main factor that will determine thepotential noise impact is the distance that the noise-generating activities would be from aNSD, the type of activities taking place, the speed of the locomotives, the existingambient soundscape at receptors dwellings, as well as the likely noise abatementmeasures to be implemented.It is therefore recommended that the potential noise impact associated with the proposedDavel to Nerston railway line be investigated in more detail in the Environmental ImpactAssessment phase.The following information is considered critical:6. detailed layout of railway line indicating rail loops, refuelling stations etc.;7. number of trains expected per day in both directions on the railway line;8. speed of trains per section of the railway line;9. specifications of locomotives as well as carriages to be used; and10. available information regarding any stakeholders and/or comments from I&AP’srelating to noise from the proposed project.P a g e | 40
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Noise and Vibration Report - Transnet

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