(a) In addition to the emergency notification required in En 504.05, a utility shall also report in writing to the department any incident occurring in connection with its facilities and services, as follows:
(1) In accordance with 49 C.F.R. § 191.9 and § 191.15, a utility shall report to the department, within 20 days following discovery, any incident which the utility shall be required to report to the federal Office of Pipeline Safety, which report shall be made on federal Department of Transportation form PHMSA F 7100.1, which is entitled, "Incident Report - Gas Distribution Systems" as found in Appendix B, and a copy shall be submitted to the department; and
(2) A utility shall report each month, pursuant to En 509.11, the status of any leaks occurring in its gas distribution system.
(b) A utility shall file all reports required pursuant to (a) above.
(c) When additional relevant information is obtained after a report is submitted under this section, the utility shall make a supplementary report to the department conveying this information.