Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 664 - Hazardous Waste Treatment, Storage And Disposal Facility Standards
Subchapter G - Closure and Long-Term Care
Section NR 664.0113 - Closure; time allowed for closure

Universal Citation: WI Admin Code § NR 664.0113

Current through August 26, 2024

(1) Within 90 days after receiving the final volume of hazardous wastes, or the final volume of non-hazardous wastes if the owner or operator complies with all applicable requirements in subs. (4) and (5), at a hazardous waste management unit or facility, the owner or operator shall treat, remove from the unit or facility or dispose of on-site, all hazardous wastes in accordance with the approved closure plan. The department may approve a longer period if the owner or operator complies with all applicable requirements for requesting a modification to the operating license and demonstrates that the conditions in pars. (a) and (b) are met:

(a) Either of the following applies:

1. The activities required to comply with this subsection will, of necessity, take longer than 90 days to complete.

2. All of the following apply:

a. The hazardous waste management unit or facility has the capacity to receive additional hazardous wastes, or has the capacity to receive non-hazardous wastes if the owner or operator complies with subs. (4) and (5).

b. There is a reasonable likelihood that the owner or operator or another person will recommence operation of the hazardous waste management unit or the facility within one year.

c. Closure of the hazardous waste management unit or facility would be incompatible with continued operation of the site.

(b) The owner or operator has taken and will continue to take all steps to prevent threats to human health and the environment, including compliance with all applicable operating license requirements.

(2) The owner or operator shall complete partial and final closure activities in accordance with the approved closure plan and within 180 days after receiving the final volume of hazardous wastes, or the final volume of non-hazardous wastes if the owner or operator complies with all applicable requirements in subs. (4) and (5), at the hazardous waste management unit or facility. The department may approve an extension to the closure period if the owner or operator complies with all applicable requirements for requesting a modification to the operating license and demonstrates that the conditions in pars. (a) and (b) are met:

(a) Either of the following applies:

1. The partial or final closure activities will, of necessity, take longer than 180 days to complete.

2. All of the following apply:

b. There is reasonable likelihood that the owner or operator or another person will recommence operation of the hazardous waste management unit or the facility within one year.

c. Closure of the hazardous waste management unit or facility would be incompatible with continued operation of the site.

(b) The owner or operator has taken and will continue to take all steps to prevent threats to human health and the environment from the unclosed but not operating hazardous waste management unit or facility, including compliance with all applicable operating license requirements.

(3) The demonstrations referred to in subs. (1) (a) and (2) (a) shall be made as follows:

(a) The demonstrations in sub. (1) (a) shall be made at least 30 days prior to the expiration of the 90-day period in sub. (1).

(b) The demonstration in sub. (2) (a) shall be made at least 30 days prior to the expiration of the 180-day period in sub. (2), unless the owner or operator is otherwise subject to the deadlines in sub. (4).

(4) The department may allow an owner or operator to receive only non-hazardous wastes in a landfill or surface impoundment unit after the final receipt of hazardous wastes at that unit if all the following conditions are met:

(a) The owner or operator requests an operating license modification in compliance with all applicable requirements in ch. NR 670 and in the license modification request demonstrates that all the following criteria are met:

1. The unit has the existing design capacity as indicated on the part A application to receive non-hazardous wastes.

2. There is a reasonable likelihood that the owner or operator or another person will receive non-hazardous wastes in the unit within one year after the final receipt of hazardous wastes.

3. The non-hazardous wastes will not be incompatible with any remaining wastes in the unit, or with the facility design and operating requirements of the unit or facility under this chapter.

4. Closure of the hazardous waste management unit would be incompatible with continued operation of the unit or facility.

5. The owner or operator is operating and will continue to operate in compliance with all applicable operating license requirements.

(b) The request to modify the operating license includes an amended waste analysis plan, groundwater monitoring and response program, human exposure assessment required under 42 USC 6939a and closure and long-term care plans, and updated cost estimates and demonstrations of financial assurance for closure and long-term care as necessary and appropriate, to reflect any changes due to the presence of hazardous constituents in the non-hazardous wastes, and changes in closure activities, including the expected year of closure if applicable under s. NR 664.0112(2) (g), as a result of the receipt of non-hazardous wastes following the final receipt of hazardous wastes.

(c) The request to modify the operating license includes revisions, as necessary and appropriate, to affected conditions of the license to account for the receipt of non-hazardous wastes following receipt of the final volume of hazardous wastes.

(d) The request to modify the operating license and the demonstrations referred to in pars. (a) and (b) are submitted to the department no later than 120 days prior to the date on which the owner or operator of the facility receives the known final volume of hazardous wastes at the unit, or no later than 90 days after August 1, 2006, whichever is later.

(5) In addition to the requirements in sub. (4), an owner or operator of a hazardous waste surface impoundment that is not in compliance with the liner and leachate collection system requirements in 42 USC 6924(o)(1) and 6925(j)(1) or 42 USC 6924(o)(2) or (3) or 6925(j)(2), (3), (4) or (13) shall do all of the following:

(a) Submit with the request to modify the operating license both of the following:

1. A contingent corrective measures plan, unless a corrective action plan has already been submitted under s. NR 664.0099.

2. A plan for removing hazardous wastes in compliance with par. (b).

(b) Remove all hazardous wastes from the unit by removing all hazardous liquids, and removing all hazardous sludges to the extent practicable without impairing the integrity of the liners, if any.

(c) Removal of hazardous wastes shall be completed no later than 90 days after the final receipt of hazardous wastes. The department may approve an extension to this deadline if the owner or operator demonstrates that the removal of hazardous wastes will, of necessity, take longer than the allotted period to complete and that an extension will not pose a threat to human health and the environment.

(d) If a release that is a statistically significant increase (or decrease in the case of pH) over background values for detection monitoring parameters or constituents specified in the operating license or that exceeds the facility's groundwater protection standard at the point of standards application, if applicable, is detected in accordance with the requirements in subch. F, the owner or operator of the unit:

1. Shall implement corrective measures in accordance with the approved contingent corrective measures plan required by par. (a) no later than one year after detection of the release, or approval of the contingent corrective measures plan, whichever is later.

2. May continue to receive wastes at the unit following detection of the release only if the approved corrective measures plan includes a demonstration that continued receipt of wastes will not impede corrective action.

3. May be required by the department to implement corrective measures in less than one year or to cease the receipt of wastes until corrective measures have been implemented if necessary to protect human health and the environment.

(e) During the period of corrective action, the owner or operator shall provide annual reports to the department that describe the progress of the corrective action program, compile all groundwater monitoring data, and evaluate the effect of the continued receipt of non-hazardous wastes on the effectiveness of the corrective action.

(f) The department may require the owner or operator to commence closure of the unit if the owner or operator fails to implement corrective action measures in accordance with the approved contingent corrective measures plan within one year as required in par. (d), or fails to make substantial progress in implementing corrective action and achieving the facility's groundwater protection standard or background levels if the facility has not yet established a groundwater protection standard.

(g) If the owner or operator fails to implement corrective measures as required in par. (d), or if the department determines that substantial progress has not been made pursuant to par. (f), the department shall:

1. Notify the owner or operator in writing that the owner or operator shall begin closure in accordance with the deadlines in subs. (1) and (2) and provide a detailed statement of reasons for this determination.

2. Provide the owner or operator and the public, through a newspaper notice, the opportunity to submit written comments on the decision no later than 20 days after the date of the notice.

3. If the department receives no written comments, the decision will become final 5 days after the close of the comment period. The department will notify the owner or operator that the decision is final, and that a revised closure plan, if necessary, shall be submitted within 15 days of the final notice and that closure shall begin in accordance with the deadlines in subs. (1) and (2).

4. If the department receives written comments on the decision, it shall make a final decision within 30 days after the end of the comment period, and provide the owner or operator in writing and the public through a newspaper notice, a detailed statement of reasons for the final decision. If the department determines that substantial progress has not been made, closure shall be initiated in accordance with the deadlines in subs. (1) and (2).

5. The final determinations made by the department under subds. 3. and 4. are not subject to administrative appeal.

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