N.M. Code R. § 20.4.3.111
Nothing in this part is intended to require the payment of annual hazardous waste fees on orphan hazardous waste or waste generated as a result of the cleanup of orphan hazardous waste. “Orphan hazardous waste” means hazardous waste for which a responsible party cannot be identified. The department may collect any fees otherwise owed from the person responsible for the creation of the orphan hazardous waste, if later identified.
[20.4.3.109 - Rp. 20.4.3.109 NMAC, 3/5/2020]