Maryland Public Utility Companies Section 12-109

      (a)      Each owner shall file notice with and submit to the Commission in writing the telephone number of the person in each county to which calls concerning proposed excavations or demolitions are to be directed.

      (b)      Each owner shall be a member of a one-call system that has filed a telephone number with the Commission on behalf of all owner-members.

      (c)      Excluding Saturdays, Sundays, and legal holidays, within 48 hours after receiving notice from a person under § 12-108 of this subtitle, an owner shall determine if a proposed excavation or demolition:

            (1)      is within 5 feet of the horizontal plane of an underground facility; or

            (2)      because of planned blasting, is in such proximity to an underground facility that the underground facility may be damaged or disturbed.

      (d)      Excluding Saturdays, Sundays, and legal holidays, within 48 hours after receiving the person's notice under § 12-108 of this subtitle, an owner that determines under subsection (c) of this section that an underground facility may be damaged or disturbed shall notify the person of the determination.

      (e)      An owner that elects to perform a proposed excavation or demolition shall perform the excavation or demolition around the underground facility in a timely manner.