NR 182.112(4)(e)(e) Liquid surface level and amount of freeboard.
NR 182.112(4)(f)(f) Condition of spillways, conduits, and water level control structures.
NR 182.112(5)(5)A qualified representative of the owner shall inspect inactive dams quarterly. The findings on each inspection shall be recorded and filed with the department. The quarterly inspection report shall include all of the following:
NR 182.112(5)(a)(a) Condition of soil surfaces on the crest, slopes, and within 50 feet from the outside base of the dam.
NR 182.112(5)(b)(b) Determination of piezometric levels within the mass of the dam where such instrumentation has been determined to be necessary or required in the long-term care section of the plan of operation.
NR 182.112(5)(c)(c) Condition of spillways, conduits, and water level control structures.
NR 182.112(6)(6)When a potentially defective condition is found in a dam during an inspection under sub. (4) or (5), the owner shall ensure that it is recorded and corrected at the earliest practicable time in a manner consistent with the contingency plan, if applicable. A report of the condition shall be made to the department within 24 hours after completion of the inspection and the actions proposed and taken by the owner for its correction shall be made to the department at the earliest practicable time. The department shall notify the owner, in writing, of the title, address, and telephone number of the person to whom any report under this section shall be given, which notification shall specifically refer to this section and shall specify to whom reports are made both inside and outside of normal working hours. The department may confirm correction of the condition and specify any necessary additional corrective action. The department shall consider any of the following as indicating a condition that requires prompt investigation and may require corrective action:
NR 182.112(6)(a)(a) Seepage on the outer face of the dam accompanied by boils, sand cones or, deltas.
NR 182.112(6)(b)(b) Silt accumulations, boils, deltas, or cones in the drainage ditches at the base of the dam.
NR 182.112(6)(c)(c) Cracking of soil surface on crest or either face of the dam.
NR 182.112(6)(d)(d) Bulging of the outside face of the dam.
NR 182.112(6)(e)(e) Seepage, damp areas, or boils in the vicinity of or erosion around a conduit through the dam.
NR 182.112(6)(f)(f) Any shrinkage of the crest or faces of the dam.
NR 182.112(7)(7)Any of the following conditions found in a dam during an inspection under sub. (4) or (5) indicate potential defects and shall be closely checked on subsequent inspections for an active dam and shall necessitate an intermediate inspection of an inactive dam:
NR 182.112(7)(a)(a) Patches of overgrowth vegetation on the outside face or close to the base of the dam.
NR 182.112(7)(b)(b) Surface erosion, gullying, or wave erosion on the inside of the dam.
NR 182.112(7)(c)(c) Surface erosion, gullying, or damp areas on the outside of the dam, including the berm and the area within 50 feet from the outside base of the dam.
NR 182.112(7)(d)(d) Erosion below any conduit.
NR 182.112(7)(e)(e) Wet areas or soggy soil on the outside or in natural soil below the dam.
NR 182.112 HistoryHistory: CR 20-043: cr. Register December 2021 No. 792, eff. 1-1-22; correction in (1) made under s. 13.92 (4) (b) 3., Stats., Register December 2021 No. 792.
NR 182.113NR 182.113Monitoring.
NR 182.113(1)(1)General. The department shall require the owner or operator of any nonferrous mining waste disposal site or facility, or any person who permits the use of property for such purposes, to conduct monitoring of groundwater, leachate, surface water, or other physical features located at the site or facility. The department may conduct its own monitoring or retain an independent contractor, at the expense of the owner or operator of any mining waste disposal site or facility or any person who permits the use of property for such purposes, to monitor groundwater, leachate, surface water, or other physical features located at the site or facility. Monitoring of the mining waste facility shall be in accordance with the monitoring plan required under ss. NR 132.107 (4) (c) and 132.117.
NR 182.113(2)(2)Groundwater and leachate monitoring.
NR 182.113(2)(a)(a) The department shall require adequate monitoring to detect the effects of leachate on groundwater located at the disposal site or facility. The department may require the installation of groundwater monitoring wells and may require installation of leachate monitoring wells, lysimeters, moisture probes, and similar devices, and associated water quality sampling programs.
NR 182.113(2)(b)(b) The department shall determine the number and location of required wells required under par. (a) based on the site size, waste types, site design, and the hydrogeologic and geologic setting of the site. The number shall be adequate to yield samples representative of the groundwater quality both up and down gradient from the disposal site or facility.
NR 182.113(2)(c)(c) The owner shall construct all monitoring wells in compliance with the requirements of ch. NR 141 and in such a manner as to prevent surface water from entering the well bore and inter-aquifer water exchange.
NR 182.113(2)(d)(d) The owner shall submit the results of all water elevation measurement and water quality sampling to the department within 60 days of the end of the sampling period. The owner shall submit an explanation of any deviation from the approved sampling plan or analytical procedures at the same time. The owner shall submit data in the format specified by the department.
NR 182.113(2)(e)(e) The owner shall conduct groundwater sampling quarterly, during the months of March, June, September, and December, unless an alternate schedule is specified by the department. An alternate schedule may be based on the hydrogeologic system’s characteristics such as flow velocity, stratigraphy, and other factors and fluctuations in quality, as defined by background or baseline sampling and waste type.
NR 182.113(2)(f)(f)