In order to obtain New Technology Approval from the MA DEP, CDG Environmental LLC conducted a 5-day pilot study at a groundwater pumping station in the Town of Canton. A full-scale CDG Gas:Solid™ chlorine dioxide generator was installed at the pump station and the system was operated from November 19 – 23, 2009. The primary objective of the piloting was to demonstrate that the CDG system delivers accurate chlorine dioxide dosing over a wide range of settings.