As used in this article, the following terms shall have the meanings indicated:
Any act by which earth, sand, gravel, rock or any other similar material is cut into, dug, quarried, uncovered, removed, displaced, relocated or bulldozed, and shall include the conditions resulting therefrom but shall not include the removal of the aforesaid objects for the purpose of erecting on the site a structure, nor shall it include any on-site grading.
A natural person, but shall also include a partnership, association or a corporation.
A lot, tract or parcel of land or a series of lots, tracts or parcels of land joined together where excavation is continuous and performed at the same time.