Closure Performance Standard

The owner or operator shall close the facility in a manner that minimizes the need for further maintenance and complies with the closure requirements established within 310 CMR 30.600 that are specific to the type of facility being closed. Post-closure escape of hazardous waste, hazardous constituents, leachate, contaminated runoff, or hazardous waste decomposition products to the ground water, surface water, soil, or the atmosphere shall be eliminated or minimized to the extent necessary to assure compliance with the previous sentence and to prevent any threat to public health, safety, or welfare, or the environment.