Maryland Public Utility Companies Section 12-106

      (a)      Except as provided in subsection (b) of this section, a person that operates a one-call system in the State shall register with and obtain certification to operate from the Commission.

      (b)      A person operating a one-call system on or before July 1, 1990, is automatically registered with and certified by the Commission to continue to operate.

      (c)      (1)      The operator of a one-call system shall install and make available an owner-contractor information exchange system in its one-call center in the State.

            (2)      The owner-contractor information exchange system shall be available to any caller at all times.

      (d)      The Commission may grant, amend, or revoke the certification of a person operating a one-call system.