Application for Modification of Rule or Exemption: If unreasonable hardship to a Class C and Class D water utility or a Class C sewer utility would result from the application of NMPSC Rule 340 [17.3.340 NMAC] herein prescribed, an application may be made to the Commission for the modification of NMPSC Rule 340 [17.3.340 NMAC] for temporary or permanent exemption from its requirements.
N.M. Admin. Code § 17.3.340.13