Sec. 1. 38 MRSA §1310-D, as amended by PL 1993, c. 732, Pt. C, §§6 to 10, is amended to read:

§1310-D. Closure of open-municipal landfills

The provisions of this article govern open-municipal solid waste landfills.

1. Landfill ranking. The department shall create and maintain a list of all open-municipal solid waste landfills ranked on the basis of the hazard each poses or potentially poses to the public health and environment. The list must establish no less than 2 categories of landfills: "high risk" landfills, which include those landfills that are known to pose a public health or environmental threat so immediate or substantial that corrective action must be taken without delay, and landfills that are not known to be "high risk." The department shall inform each affected municipality in writing whenever there are changes made to the priority list and publish the most current version of that list on or about February 1st of each year. All pertinent and related rules adopted by the department establishing standards governing landfill remediation and closure must be designed so that the costs of remediation and closure are coordinated with and reasonably proportionate to the relative public health risk and environmental risk indicated by the specific rank of the municipal landfill.

2. Evaluation. In response to the priorities established in the open-municipal solid waste landfill ranking and the objectives of paragraphs A to C, the commissioner shall conduct, subject to the availability of funding, environmental evaluations of each open-municipal solid waste landfill. The commissioner may employ private consultants to avoid additions to departmental staff and to accomplish the evaluations in a timely manner. The commissioner may utilize existing analyses of facilities, subject to the provisions of this subsection. Municipalities shall cooperate with the efforts of the department by providing reasonably available and relevant material that the department may require with regard to the purposes of this section. When the commissioner has sufficient knowledge of existing hazards to the environment and public health posed by a specific site, the commissioner may designate the landfill as a high-risk landfill and take measures necessary to effect proper remediation and closure of the landfill, notwithstanding the site's listed priority. In those cases, the commissioner shall ensure that the requirements of this subsection are met. The commissioner shall ensure that each evaluation achieves the following objectives: