Maryland Code, Public Utilities § 11-102

(1) 10 or more customers by pipes from a liquefied petroleum gas storage tank; or

(2) at least 2 but fewer than 10 customers, by underground pipes from a liquefied petroleum gas storage tank, if a portion of the system is located in a public place.

(b)(1) The owner of a facility at a location subject to subsection (a) of this section or the owner of the liquefied petroleum gas furnished shall comply with the safety standards of service.

(2) Except as provided in paragraph (3) of this subsection, other sections of this division do not apply to an owner subject to this section.

(3) The Commission may apply Title 12, Subtitle 1 and §§ 2-117(a), 5-304, 7-301, 7-302, and 13-203 of this article to an owner subject to this section.

(1) the location of each installation;

(2) the number of customers or dwelling units furnished service at each location; and

(3) the name and address of the office responsible for the service.