NR 514.07(7)(e)(e) An operational plan which addresses the daily operations; how leachate seeps, odors and build-up will be prevented or contained and actions to be taken if nuisance conditions occur; how any enhanced methane production will be managed by gas extraction systems; and care and maintenance of the tanks, pumps and distribution systems.

NR 514.07(7)(f)(f) A description of warning symptoms and failure thresholds which will be used to initiate investigation, stand-by, termination and changes to the leachate recirculation system. The operational plan shall identify warning symptoms and failure thresholds, including but not limited to elevated leachate heads on the liner, significant and persistent odors, excessively acidic leachate chemistry or other monitoring data indicate poor waste decomposition conditions, seeps and other surface expressions of recirculated leachate, excessive pressures within the waste mass, saturated conditions in the waste mass, reduced shear strength of the waste mass and any other warning symptom conditions appropriate to the site. Warning symptoms shall result in a suspension of leachate recirculation, investigation and changes to be implemented before resuming leachate recirculation. Failure thresholds shall result in termination of leachate recirculation, investigation and changes that will be submitted to the department for review and approval in writing prior to resumption of leachate recirculation.

NR 514.07(7)(g)(g) A monitoring plan which tracks volumes of leachate extracted and recirculated and volumes of precipitation in each leachate drainage basin; leachate heads on the liner; gas volumes; and leachate characteristics. The monitoring plan shall incorporate, as appropriate, the requirements of s. NR 507.215.

NR 514.07(7)(h)(h) A plan which specifies documentation and record-keeping of the construction, operation and monitoring of the leachate recirculation system. This plan shall specify the information that will be sent to the department and the frequency of those submittals.

NR 514.07(7)(i)(i) The plan of operation shall include diagrams and narrative concerning gas extraction equipment, fittings and devices to be used to extract gas produced as a result of leachate recirculation. The plan of operation shall contain a schedule of operation of the gas extraction system in those cells which are subject to leachate recirculation.

NR 514.07(7)(j)(j) A description of the circumstances under which leachate will be diverted to a wastewater treatment plant rather than recirculated.

NR 514.07(8)(a)(a) Landfills shall meet the requirements of pars. (b) to (i) where they will accept municipal solid waste and contain leachate collection lines that exceed 1,200 feet from the end of each cleanout to the toe of the opposite slope. Where the requirements of this subsection differ from other requirements of this chapter, these requirements shall take precedence.

NR 514.07(8)(b)(b) The design calculations required by s. NR 514.06 (14) shall include assessments of the landfill foundation for stability and settlement, using parameters determined from samples taken from borings in the subgrade below the proposed fill area.

NR 514.07(8)(c)(c) The report shall describe the design rationale for the layout of the leachate collection system and its alignment. This description shall include:

NR 514.07(8)(d)(d) The report shall include the calculations for the maximum anticipated overburden loads as calculated under s. NR 504.06 (6) (e) and selected leachate collection pipe materials to comply with these calculated loads. Calculations shall be performed demonstrating the leachate collection pipe and bedding material as placed possess structural strength to support maximum loads imposed by the overlying materials and equipment. The calculations shall demonstrate that the pipe is designed to maintain its wall integrity and not deform under expected maximum loads to the extent that the loading or deformation negatively affect the performance and cleaning of the leachate collection systems.

NR 514.07(8)(e)(e) Specifications and construction methods for bedding of leachate collection pipes shall be included, to maximize competent support of the pipes, eliminate bridging and maintain design slope of the pipe.

NR 514.07(8)(f)(f) The report shall include specifications for the use of sweep bends at all changes of alignment of leachate collection pipes, construction methods to provide support for pipe and sweep bends, and measures to be taken to minimize obstructions to or friction with pipe cleaning equipment.

NR 514.07(8)(g)(g) The report shall include a construction quality assurance plan to be followed by the registered professional engineer and qualified technician responsible for evaluating construction of the collection trench and leachate collection piping and ensuring that the fabrication and installation meet the design specifications. The construction quality assurance plan shall include continuous observation of all aspects of collection trench construction and collection pipe installation activities by qualified engineers or technicians. The construction quality assurance plan shall include use of observations, survey measurements, and testing frequencies in accordance with those specified in ch. NR 516. The quality assurance plan shall include proposed methods for verifying the acceptability of the collection trench, collection pipe alignment, collection pipe materials and sweep bends, and adaptations by the owner or contractors to unforeseen conditions.

NR 514.07(8)(h)(h) The report shall describe proposed equipment and methods which are capable of inserting cleanout devices through all leachate collection pipes, from insertion at each access point to, at a minimum, the toe of the opposite sideslope.

NR 514.07(8)(i)(i) The report shall include procedures for soil borings and laboratory consolidation testing to verify settlement analyses.

NR 514.07(9)(a)(a) The plan of operation for all new and expanded municipal solid waste landfills submitted to the department after January 1, 2007 shall include a plan for significantly reducing the amount of degradable organic material remaining after site closing in order to materially reduce the amount of time the landfill will take to achieve landfill organic stability. Owners and operators of all municipal solid waste landfills that have a plan of operation approved between January 1, 2004 and January 1, 2007 shall submit a plan modification to the department no later than January 1, 2007 for significantly reducing the amount of degradable organic material remaining after site closing in order to materially reduce the amount of time the landfill will take to achieve landfill organic stability. Owners and operators of all other municipal solid waste landfills at which filling has not exceeded 50% of the landfill’s approved capacity by January 1, 2012, shall submit a plan modification to the department no later than January 1, 2012, for significantly reducing the amount of degradable organic material remaining after site closing in order to materially reduce the amount of time the landfill will take to achieve landfill organic stability. Waste that has already been disposed of prior to the date the plan is approved by the department is not subject to the planning requirement, but may be included in the plan at the discretion of the landfill operator.

NR 514.07 NoteNote: “Closing” is defined in s. 289.01 (5), Stats., as “the time at which a solid or hazardous waste facility ceases to accept wastes, and includes those actions taken by the owner or operator to prepare the facility for long-term care and to make it suitable for other uses.”