N.M. Admin. Code § 8.370.4.23
The authority shall provide notification, by certified mail, personal delivery, or by facsimile if the notice is also mailed, of its intent to impose any intermediate sanction or civil monetary penalty. Notice may be given of the intent to impose a civil monetary penalty where the total accrued amount of the civil monetary penalty is not yet determined. Notice setting out the base amount and final total accrued amount of the daily civil monetary penalty shall be provided at the time of the determination.
Notification of other actions contemplated under these regulations may be by regular mail, certified mail, or personal delivery or by facsimile if the notice is also mailed. All time periods for response shall be calculated beginning on the date of service, unless otherwise provided.
N.M. Admin. Code § 8.370.4.23