NR 664.0253(3)(a)2. 2. Conduct a fingerprint, hazardous constituent or other analyses of the liquids in the leak detection system to identify the source of liquids and possible location of any leaks, and the hazard and mobility of the liquid.

NR 664.0253(3)(a)3. 3. Assess the seriousness of any leaks in terms of potential for escaping into the environment.

NR 664.0253(3)(b) (b) Document why the assessments are not needed.

NR 664.0253 History History: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06.

NR 664.0254 NR 664.0254 Monitoring and inspection.

NR 664.0254(1) (1) During construction or installation, liners (except in the case of existing portions of piles exempt from s. NR 664.0251 (1)) and cover systems (e.g., membranes, sheets or coatings) shall be inspected for uniformity, damage and imperfections (e.g., holes, cracks, thin spots or foreign materials). Both of the following inspections are required immediately after construction or installation:

NR 664.0254(1)(a) (a) Synthetic liners and covers shall be inspected to ensure tight seams and joints and the absence of tears, punctures or blisters.

NR 664.0254(1)(b) (b) Soil-based and admixed liners and covers shall be inspected for imperfections including lenses, cracks, channels, root holes or other structural non-uniformities that may cause an increase in the permeability of the liner or cover.

NR 664.0254(2) (2) While a waste pile is in operation, it shall be inspected weekly and after storms to detect evidence of any of the following:

NR 664.0254(2)(a) (a) Deterioration, malfunctions or improper operation of run-on and run-off control systems.

NR 664.0254(2)(b) (b) Proper functioning of wind dispersal control systems, where present.

NR 664.0254(2)(c) (c) The presence of leachate in and proper functioning of leachate collection and removal systems, where present.

NR 664.0254(3) (3) An owner or operator required to have a leak detection system under s. NR 664.0251 (3) shall record the amount of liquids removed from each leak detection system sump at least once each week during the active life and closure period.

NR 664.0254 History History: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06.

NR 664.0256 NR 664.0256 Special requirements for ignitable or reactive waste. Ignitable or reactive waste may not be placed in a waste pile unless the waste and waste pile satisfy all applicable requirements of ch. NR 668 and sub. (1) or (2):

NR 664.0256(1) (1) The waste is treated, rendered or mixed before or immediately after placement in the pile so that both of the following apply:

NR 664.0256(1)(a) (a) The resulting waste, mixture or dissolution of material no longer meets the definition of ignitable or reactive waste under s. NR 661.0021 or 661.0023.

NR 664.0256(1)(b) (b) Section NR 664.0017 (2) is complied with.

NR 664.0256(2) (2) The waste is managed in such a way that it is protected from any material or conditions which may cause it to ignite or react.

NR 664.0256 History History: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; CR 19-082: am. (1) (a) Register August 2020 No 776.

NR 664.0257 NR 664.0257 Special requirements for incompatible wastes.

NR 664.0257(1) (1) Incompatible wastes, or incompatible wastes and materials, (see ch. NR 664 Appendix V for examples) may not be placed in the same pile, unless s. NR 664.0017 (2) is complied with.

NR 664.0257(2) (2) A pile of hazardous waste that is incompatible with any waste or other material stored nearby in containers, other piles, open tanks or surface impoundments shall be separated from the other materials, or protected from them by means of a dike, berm, wall or other device.

NR 664.0257(3) (3) Hazardous waste may not be piled on the same base where incompatible wastes or materials were previously piled, unless the base has been decontaminated sufficiently to ensure compliance with s. NR 664.0017 (2).

NR 664.0257 History History: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; correction in (1) made under s. 13.92 (4) (b) 7., Stats., Register March 2013 No. 687.

NR 664.0258 NR 664.0258 Closure and long-term care.

NR 664.0258(1) (1) At closure, the owner or operator shall remove or decontaminate all waste residues, contaminated containment system components (liners, etc.), contaminated subsoils and structures and equipment contaminated with waste and leachate, and manage them as hazardous waste unless s. NR 661.0003 (4) applies.

NR 664.0258(2) (2) If, after removing or decontaminating all residues and making all reasonable efforts to effect removal or decontamination of contaminated components, subsoils, structures and equipment as required in sub. (1), the owner or operator finds that not all contaminated subsoils can be practicably removed or decontaminated, the owner or operator shall close the facility and perform long-term care in accordance with the closure and long-term care requirements that apply to landfills (s. NR 664.0310).

NR 664.0258(3) (3)