Mechanical noise; construction noise, etc. Install sound barrier, muffle cover, no whistle, handle with care. Equipment oil leakage; tail gas emission. Oil connection measures and tail gas purification device. Discharge of solid waste and waste liquid. Waste shall be classified, stacked, recycled or destroyed in a centralized way. Earthwork excavation, site stacking, earthwork backfilling and transport vehicle dust raising; welding dust volatilization watering, fan Hu mask, welding dust remover<br>
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