NR 664.0231(1)(a)(a) The volume and physical and chemical characteristics of the wastes, including their potential to migrate through soil or to volatilize or escape into the atmosphere. NR 664.0231(1)(b)(b) The attenuative properties of underlying and surrounding soils or other materials. NR 664.0231(1)(c)(c) The mobilizing properties of other materials co-disposed with these wastes. NR 664.0231(1)(d)(d) The effectiveness of additional treatment, design or monitoring techniques. NR 664.0231(2)(2) The department may determine that additional design, operating and monitoring requirements are necessary for surface impoundments managing hazardous wastes F020, F021, F022, F023, F026 and F027 in order to reduce the possibility of migration of these wastes to groundwater, surface water or air so as to protect human health and the environment. NR 664.0231 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 664.0232NR 664.0232 Air emission standards. The owner or operator shall manage all hazardous waste placed in a surface impoundment in accordance with the applicable requirements of subchs. BB and CC. NR 664.0232 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 664.0250(1)(1) This subchapter applies to owners and operators of facilities that store or treat hazardous waste in piles, except as s. NR 664.0001 provides otherwise. NR 664.0250(2)(2) This subchapter does not apply to owners or operators of waste piles that are closed with wastes left in place. Those waste piles are regulated under subch. N (landfills). NR 664.0250(3)(3) The owner or operator of any waste pile that is inside or under a structure that provides protection from precipitation so that neither run-off nor leachate is generated is not regulated under s. NR 664.0251 or under subch. F, if all of the following are met: NR 664.0250(3)(a)(a) Liquids or materials containing free liquids are not placed in the pile. NR 664.0250(3)(b)(b) The pile is protected from surface water run-on by the structure or in some other manner. NR 664.0250(3)(c)(c) The pile is designed and operated to control dispersal of the waste by wind, where necessary, by means other than wetting. NR 664.0250(3)(d)(d) The pile will not generate leachate through decomposition or other reactions. NR 664.0250 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 664.0251NR 664.0251 Design and operating requirements. NR 664.0251(1)(1) A waste pile (except for an existing portion of a waste pile) shall have both of the following: NR 664.0251(1)(a)(a) A liner that is designed, constructed and installed to prevent any migration of wastes out of the pile into the adjacent subsurface soil or groundwater or surface water at any time during the active life (including the closure period) of the waste pile. The liner may be constructed of materials that may allow waste to migrate into the liner itself (but not into the adjacent subsurface soil or groundwater or surface water) during the active life of the facility. The liner shall be all of the following: NR 664.0251(1)(a)1.1. Constructed of materials that have appropriate chemical properties and sufficient strength and thickness to prevent failure due to pressure gradients (including static head and external hydrogeologic forces), physical contact with the waste or leachate to which they are exposed, climatic conditions, the stress of installation and the stress of daily operation. NR 664.0251(1)(a)2.2. Placed upon a foundation or base capable of providing support to the liner and resistance to pressure gradients above and below the liner to prevent failure of the liner due to settlement, compression or uplift. NR 664.0251(1)(a)3.3. Installed to cover all surrounding earth likely to be in contact with the waste or leachate. NR 664.0251(1)(b)(b) A leachate collection and removal system immediately above the liner that is designed, constructed, maintained and operated to collect and remove leachate from the pile. The department shall specify design and operating conditions in the operating license to ensure that the leachate depth over the liner does not exceed 30 cm (one foot). The leachate collection and removal system shall be both of the following: NR 664.0251(1)(b)1.a.a. Chemically resistant to the waste managed in the pile and the leachate expected to be generated. NR 664.0251(1)(b)1.b.b. Of sufficient strength and thickness to prevent collapse under the pressures exerted by overlaying wastes, waste cover materials and any equipment used at the pile. NR 664.0251(1)(b)2.2. Designed and operated to function without clogging through the scheduled closure of the waste pile.