(a) Except for those persons subject to §330.13 of this title (relating to Waste Management Activities Exempt from Permitting, Registration, or Notification), a person is obligated to perform closure or remediation for a facility or area that contains municipal solid waste. The person can fulfill this obligation by meeting the remedy standards of Chapter 350 of this title (relating to Texas Risk Reduction Program). The regulations in Chapter 350 of this title supplement, but do not replace, any requirements for closure or remediation specified in subsections (b) and (c) of this section.(b) Any person that stores, processes, or disposes of municipal solid waste at a facility permitted under §330.7 of this title (relating to Permit Required), or registered under §330.9 of this title (relating to Registration Required) shall, unless specifically authorized by the commission, close the facility in accordance with the closure provisions of the permit or registration.(c) Any person that stores, processes, or disposes of municipal solid waste is subject to the applicable provisions in Subchapter K of this chapter (relating to Closure and Post-Closure).