(1) Each gas utility must retain all records and reports for three years unless otherwise specified by the publication referenced in subsection (2) of this section. No records may be destroyed prior to the expiration of the time specified by the publication referenced in subsection (2) of this section.

(2) The commission adopts the publication, Regulations to Govern the Preservation of Records of Electric, Gas, and Water Companies, published by the National Association of Regulatory Utility Commissioners as the standards for utility records retention. Information about the Regulations to Govern the Preservation of Records of Electric, Gas, and Water Companies regarding the version adopted and where to obtain it is set out in WAC 480-90-999, Adoption by reference.