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"The proposed HEISTT solution is the rapid installation of groundwater treatment chemicals as an insitu subsurface remediation technique, brought about by the use of ultrasonic assisted injection technology to create a closely spaced grid of single treatment small diameter wells to a depth of 20m. As part of the boreholing process, remediation chemicals will be introduced in to the ground containe ...

Background Oil-shale mining and oil-shale based electricity production, chemical and other industrial activities, mine- and quarry-dewatering, mismanagement of oil and fuel stocks, inadequate waste management and untreated wastewater, and poor environmental management of agricultural activities have caused serious damage to ground and surface water in the ...