The commissioner shall provide for technical assistance to encourage and improve solid waste management and to assist political subdivisions in preparing the plans described in section 115A.46. The commissioner shall provide model plans for regional and local solid waste management. The commissioner may contract for the delivery of technical assistance by a regional development commission, any state or federal agency, private consultants, or other persons. The commissioner shall prepare and publish an inventory of sources of technical assistance for solid waste planning, including studies, publications, agencies, and persons available.