Dewatering means the removal of water for construction activity. It can be a discharge of appropriated surface or groundwater to dry and/or solidify a construction site. It may require Minnesota Department of Natural Resources permits to be appropriated and if contaminated may require other MPCA permits to be discharged.
Tunnelling means the construction of any tunnel beneath the natural surface of the earth for a purpose other than the searching for or winning of a mineral
Filtration means a process for removing particulate matter from water by passage through porous media.
Injection means the injection of carbon dioxide streams into the storage site;
drilling means the act of boring a hole to reach a proposed bottom hole location through which oil or gas may be produced if encountered in paying quantities, and includes redrilling, sidetracking, deepening, or other means necessary to reach the proposed bottom hole location, testing, logging, plugging, and other operations necessary and incidental to the actual boring of the hole;