Section 120.832 - Facility Design(A) Facility design features shall be directed toward long-term isolation of waste and avoidance of the need for continuing active maintenance after closure.(B) The facility design and operation shall be compatible with the facility closure and closure plan and lead to closure that ensures that the performance objectives set forth in 105 CMR 120.811 through 120.814 will be met.(C) The facility shall be designed to complement and improve, where appropriate, the ability of the facility's natural characteristics to assure that the performance objectives will be met.(D) Engineered barriers shall be designed to minimize to the extent practicable, water infiltration, to direct percolating of surface water away from waste, and to resist degradation by surface geologic processes and biotic activity.(E) Surface features shall direct surface water drainage away from disposal units at velocities and gradients which will not result in erosion that will require ongoing active maintenance.(F) The facility shall be designed to minimize to the extent practicable the contact of percolating or surface water with waste.(G) The facility design shall incorporate subsidence monitoring and minimization; long term stability of any disposal units, storage and structural components; and facility safety systems to ensure protection of facility workers, members of the general public, and the environment.(H) The design of any disposal facility shall incorporate structural monitoring provisions for a program which allows:(1) Regular visual inspections of the exterior portions of any disposal units;(2) Remote sensing of inaccessible areas, where applicable; and,(3) Meters and gauges, as necessary.(I) The Operator shall ensure that the facility design and operation plans allow for proper inspection and receipt of all incoming waste shipments and packages.(J) The buffer zone shall not be used for receipt or storage of waste. NOTE: Short-term and long-term performance of a disposal facility may be achieved by a combination of factors, including disposal method and engineered barriers, waste form and packaging, facility operation, institutional controls, natural site features, and waste classification and inventory limits.