NR 664.0251(4)(b)(b) Allow detection of leaks of hazardous constituents through the top liner at least as effectively. NR 664.0251(6)(6) The owner or operator of any replacement waste pile unit is exempt from sub. (3) if both of the following apply: NR 664.0251(6)(b)(b) There is no reason to believe that the liner is not functioning as designed. NR 664.0251(7)(7) The owner or operator shall design, construct, operate and maintain a run-on control system capable of preventing flow onto the active portion of the pile during peak discharge from at least a 25-year storm. NR 664.0251(8)(8) The owner or operator shall design, construct, operate and maintain a run-off management system to collect and control at least the water volume resulting from a 24-hour, 25-year storm. NR 664.0251(9)(9) Collection and holding facilities (e.g., tanks or basins) associated with run-on and run-off control systems shall be emptied or otherwise managed expeditiously after storms to maintain design capacity of the system. NR 664.0251(10)(10) If the pile contains any particulate matter which may be subject to wind dispersal, the owner or operator shall cover or otherwise manage the pile to control wind dispersal. NR 664.0251(11)(11) The department shall specify in the operating license all design and operating practices that are necessary to ensure that the requirements of this section are satisfied. NR 664.0251 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; CR 16-007: am. (3) (intro.) Register July 2017 No. 739, eff. 8-1-17. NR 664.0252(1)(1) The department shall approve an action leakage rate for waste pile units subject to s. NR 664.0251 (3) or (4). The action leakage rate is the maximum design flow rate that the leak detection system can remove without the fluid head on the bottom liner exceeding one foot. The action leakage rate shall include an adequate safety margin to allow for uncertainties in the design (e.g., slope, hydraulic conductivity, thickness of drainage material), construction, operation and location of the leak detection system, waste and leachate characteristics, likelihood and amounts of other sources of liquids in the leak detection system and proposed response actions (e.g., the action leakage rate shall consider decreases in the flow capacity of the system over time resulting from siltation and clogging, rib layover and creep of synthetic components of the system, overburden pressures, etc.). NR 664.0252(2)(2) To determine if the action leakage rate has been exceeded, the owner or operator shall convert the weekly flow rate from the monitoring data obtained under s. NR 664.0254 (3), to an average daily flow rate (gallons per acre per day) for each sump. Unless the department approves a different calculation, the average daily flow rate for each sump shall be calculated weekly during the active life and closure period. NR 664.0252 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 664.0253(1)(1) The owner or operator of waste pile units subject to s. NR 664.0251 (3) or (4) shall have an approved response action plan before receipt of waste. The response action plan shall set forth the actions to be taken if the action leakage rate has been exceeded. At a minimum, the response action plan shall describe the actions specified in sub. (2). NR 664.0253(2)(2) If the flow rate into the leak detection system exceeds the action leakage rate for any sump, the owner or operator shall do all of the following: NR 664.0253(2)(a)(a) Notify the department in writing of the exceedance within 7 days of the determination. NR 664.0253(2)(b)(b) Submit a preliminary written assessment to the department within 14 days of the determination, as to the amount of liquids, likely sources of liquids, possible location, size and cause of any leaks and short-term actions taken and planned. NR 664.0253(2)(c)(c) Determine to the extent practicable the location, size and cause of any leak. NR 664.0253(2)(d)(d) Determine whether waste receipt should cease or be curtailed, whether any waste should be removed from the unit for inspection, repairs or controls and whether or not the unit should be closed. NR 664.0253(2)(e)(e) Determine any other short-term and long-term actions to be taken to mitigate or stop any leaks. NR 664.0253(2)(f)(f) Within 30 days after the notification that the action leakage rate has been exceeded, submit to the department the results of the analyses specified in pars. (c), (d) and (e), the results of actions taken and actions planned. Monthly thereafter, as long as the flow rate in the leak detection system exceeds the action leakage rate, the owner or operator shall submit to the department a report summarizing the results of any remedial actions taken and actions planned. 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.