02-658-14 Me. Code R. § 8
All installations of self-service dispensers at dispensing stations must comply with the following requirements in addition to the requirements of 14.7:
Operating instructions must be conspicuously posted in the dispensing area.
The dispensing area must be in clear view of the operator on duty at all times.
The operator must be able to communicate with persons in the dispensing area at all times.
Warning signs incorporating the following or equivalent wording must be conspicuously posted in the dispensing area:
The dispensing station must have an emergency breakaway device under the dispensing unit that will retain the product on both sides of the breakaway point, or other devices affording equivalent protection.
The dispensing station must have a thermally operated shutoff designed to shut off all transfer operations in case of a fire.
Motor fuel dispensing devices for compressed natural gas, liquefied natural gas, and liquefied petroleum gas must be listed.
Listed hose assemblies must be used to dispense fuel. Hose length at automotive service stations must not exceed eighteen (18) feet (5.5 meters).
Dispensing devices for liquefied petroleum gas (LP), liquefied natural gas (LNG) or compressed natural gas (CNG) must meet all requirements of the appropriate Sections of NFPA 58 for LP, and NFPA 52 for LNG and CNG dispensers. When a LP, LNG or CNG dispenser is located at a facility where other fuels are dispensed, it also meet the requirements of NFPA 30A.
02-658 C.M.R. ch. 14, § 8