Section NR 516.08 - Testing requirements for landfills with extended collection lines(1) REQUIREMENTS. Landfills shall meet the requirements of subs.(2) and (3) 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 section differ from other requirements of this chapter, these requirements shall take precedence.(2) PIPE AND TRENCH. In addition to the information specified in s. NR 516.04(3) (d), reports documenting the construction of all new landfill areas shall include the following information, at a minimum: (a) Observations of collection trench and leachate collection pipe installation. Observations shall verify that collection pipe is handled and placed in a manner that prevents holes from being blocked by mud and that assures that holes are located 45 degrees from the springline. Records shall note any changes in alignment of collection trenches or leachate collection pipes and construction methods which produce obstructions or interference with pipe cleaning equipment. Specifications of pipe, specialty fittings and sweep bends installed in construction shall be included in tables or appendices to reports. Documentation of sweep bends shall include the fabricated or field-achieved radius of bend and conformance with minimum radii of bend specified by approved plans or required by the department's plan approval. Reports shall describe methods used to provide support and cover for collection pipe, specialty fittings and sweep bends.(b) Documentation of the presence of registered engineers or qualified technicians providing quality assurance monitoring during all aspects of installation of leachate collection pipe and pipe bedding and placement of aggregate cover over the pipe.(c) Documentation of initial leachate collection pipe cleaning after placement of the leachate collection layer. This documentation shall include, at a minimum: 1. The equipment, methods and chemicals that were used successfully to insert cleanout devices through all leachate collection pipes from each access point to, at a minimum, the toe of the opposite sideslope.2. The necessary minimum hose or machine pressures, nozzles, hose materials and other features necessary to achieve successful cleaning of leachate collection pipes.3. Any significant adaptations needed to complete pipe cleaning, and any problems encountered in pipe cleaning and their resolution.4. Any repairs or modifications made to the collection piping in response to the pipe cleaning operation.5. Recommendations to the operator for the necessary equipment, specifications, and operating conditions for future pipe cleaning.(3) SOIL TESTING. Testing shall be performed during the construction of any landfill areas. At a minimum, this testing shall include test results from a minimum of one hydraulic conductivity test performed on representative samples of drainage media used for the leachate collection blanket and for the leachate collection trench backfill. The test procedure and any adaptations used to accommodate high-capacity drainage material shall be identified.Wis. Admin. Code Department of Natural Resources NR 516.08
CR 04-077: cr. Register November 2005 No. 599, eff. 12-01-05; CR 06-026: am. (1), Register December 2006 No. 612, eff. 1-1-07.