Underground mining means all methods of mining other than surface mining.
Floodplain or flood-prone area means any land area susceptible to being inundated by water from any source (see definition of “flood”).
Underground storage tank or “UST” means any one or combination of tanks (including underground pipes connected thereto) that is used to contain an accumulation of regulated substances, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground. This term does not include any:
emissions of substances not controlled by emission limits means emissions of substances to air, water or land from the activities, either from the emission points specified in schedule 3 or from other localised or diffuse sources, which are not controlled by an emission limit.