23 CAR § 464-207. Maps and associated records

(a) System maps. (1) Each gas utility shall maintain current maps or plans depicting plant in all areas served by the gas utility. (2) Those maps or plans shall be in sufficient detail to enable prompt location of each line and facility owned or operated by the gas utility. (3) Each system map and its associated records shall be maintained in sufficient detail to enable the reconstruction of the system, if required. (b) Changes to maps. (1) Each gas utility shall map or add each change, relocation, or extension of plant to existing maps no later than twenty-four (24) calendar months after the change, relocation, or extension is completed. (2) Until such changes are posted to the maps, either sufficiently detailed engineering drawings showing the changes or a reference to the location of the drawings shall be attached to the existing maps.