The idea for the HEISTT concept derives from the quick installation of multiple band drains which could similarly be deployed to include chemical treatment 
for the remediation of polluted groundwater plumes. Chemical treatment (such as oxidation and reduction technologies) is an established and successful 
remediation technology, nevertheless at individual sites it can become financially uncompetitive treatment option when specialist rig and relatively 
slow rates of drilling mean high installation costs. The HEISTT concept looks at providing proof of concept and early prototype for a unique rig which can be 
adapted to be mounted off a standard excavator arm, and rapidly installs chemical treatments into the subsurface. The increased installation rate, depth 
of hole and cost could create savings enabling the technology to become both more widely accessible in terms of people able to use the technology and spectrum 
of sites which would become cost effective for treatment using the HEISTT system.  
  
What it is going to do?  
  
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The proposed HEISTT system represents a step change over existing in situ chemical deployment technologies with the potential to deliver:  
  
◦Order of magnitude improvement in speed of remediation treatment chemical installation. Installation of 5 boreholes a day may be typical under 
conventional methods whilst up to 100 boreholes per day are proposed through the HEISTT system.  
◦Reduced remedial treatment costs through more efficient use of treatment chemicals  
◦Simpler and safer installation of remedial treatment chemicals  
◦An increased rate of remediation through better distribution of treatment chemicals