Overview Harpers Environmental ltd Contracted by a major construction And demolition company to carry out the role of dewatering and desludging subcontractor on the demolition works at a former gas holder station. Harpers Environmental ltd. are preferred contractors to National Grid Property Holdings Ltd for specialist groundwater remediation projects. Harpers Environmental scope of works The subcontract package was to rstly dewater 3 redundant gas holders. The water was to be pumped out using our bespoke water treatment system and disposed of to the sewer. Once access had been gained to the holder the sludge had to be removed to allow the demolition programme to progress. The prime aim of the sludge treatment was to reduce volumes to allow waste disposal at a much lower cost. Restriction

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