N.Y.C. Charter § 1204: Section 1204. Right of entry.

The commissioner, officers and employees of the department may, in accordance with applicable law, enter upon public or private property for the purpose of making surveys, test pits and borings or other investigations necessary for the exercise of the powers or the performance of the duties of the department. Refusal by the owner or the agent of such owner to permit such entry shall be a misdemeanor and punishable by not more than thirty days' imprisonment or a fine of not more than five hundred dollars, or both.