NR 665.0303(1)(1) The owner or operator of landfill units subject to s. NR 665.0301 (1) shall develop and keep on site until closure of the facility a response action plan. 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 665.0303(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 665.0303(2)(a)(a) Notify the department in writing of the exceedence within 7 days of the determination. NR 665.0303(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 665.0303(2)(c)(c) Determine to the extent practicable the location, size and cause of any leak. NR 665.0303(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 665.0303(2)(e)(e) Determine any other short-term and longer-term actions to be taken to mitigate or stop any leaks. NR 665.0303(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 665.0303(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 665.0303(3)(a)3.3. Assess the seriousness of any leaks in terms of potential for escaping into the environment. NR 665.0303 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06; CR 16-007: am. (1) Register July 2017 No. 739, eff. 8-1-17. NR 665.0304(1)(1) An owner or operator required to have a leak detection system under s. NR 665.0301 (1) 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 665.0304(2)(2) After the final cover is installed, the amount of liquids removed from each leak detection system sump shall be recorded at least monthly. If the liquid level in the sump stays below the pump operating level for 2 consecutive months, the amount of liquids in the sumps shall be recorded at least quarterly. If the liquid level in the sump stays below the pump operating level for 2 consecutive quarters, the amount of liquids in the sumps shall be recorded at least semi-annually. If at any time during the long-term care period the pump operating level is exceeded at units on quarterly or semi-annual recording schedules, the owner or operator shall return to monthly recording of amounts of liquids removed from each sump until the liquid level again stays below the pump operating level for 2 consecutive months. NR 665.0304(3)(3) “Pump operating level” is a liquid level proposed by the owner or operator and approved by the department based on pump activation level, sump dimensions and level that avoids backup into the drainage layer and minimizes head in the sump. The timing for submission and approval of the proposed “pump operating level” will be in accordance with s. NR 665.0302 (1). NR 665.0304 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 665.0309NR 665.0309 Surveying and recordkeeping. The owner or operator of a landfill shall maintain both of the following items in the operating record required in s. NR 665.0073: NR 665.0309(1)(1) On a map, the exact location and dimensions, including depth, of each cell with respect to permanently surveyed benchmarks. NR 665.0309(2)(2) The contents of each cell and the approximate location of each hazardous waste type within each cell. NR 665.0309 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 665.0310(1)(1) At final closure of the landfill or upon closure of any cell, the owner or operator shall cover the landfill or cell with a final cover designed and constructed to do all of the following: NR 665.0310(1)(a)(a) Provide long-term minimization of migration of liquids through the closed landfill.