The Operator shall observe, monitor, and carry out necessary maintenance and repairs at the facility until a period of five years after the site closure is complete and the license is transferred by the Department in accordance with 105 CMR 120.870. The Operator environmental monitoring program of the facility shall continue as approved by the Department. Responsibility for the facility must be maintained by the Operator for not less than five years. A longer time period for post-closure observation and maintenance may be required as part of the site closure plan, based on facility-specific conditions.
105 CMR, § 120.860