Extensive works to existing boreholes, re-lining with 450mm diameter lining tubes, cleaning out debris, air lift, pump re-installation and speacialist cleaning methods used.
Locating of 375mm borehole, cleaning out, recovering borehole pump and other items, air lift test, and 28 day constant rate test pumping. The developers of the site are now considering using the borehole to supply the development.
Locating existing borehole, pump testing, modifications to headworks, installation of permanent pumping equipment and extensive control panel.
Re-sizing of existing borehole pumps, alterations to head works, replacing of rising mains.
Borehole inside building, wire brushing existing borehole, re-gravelling behind the screen and treating and sterilising.
Wire brushing existing borehole, air lift test, treating and sterilising, pump installation.
Removing broken piece of lining tube, and replacing the lining tube, clean out debris in borehole, re-install permanent pump.
Recovery of electric submersible pump dropped by others, and other items, and clean out borehole to its original depth.
Investigation into the adits and wells on site using ROV system, divers and CCTV equipment.
Refurbishment of head works, completion of constant rate test pumping on various sites including step testing and geologging surveys.
Removal of existing borehole pump, installation of test pumping equipment and carry out 5 day constant rate test pumping.
Refurbishment of head works, removal of pumping equipment, replacing rising main. Re-installation of existing borehole pumps on new stainless steel rising main.