Miscellaneous requirements for plans of operation

Miscellaneous requirements for plans of operation. Miscellaneous requirements for plans of operation. The plan of operation for all new landfills and expansions of existing landfills shall include the following information where applicable: (1) Geosynthetics requirements. The plan of operation for any landfill which includes a composite liner, composite capping layer or utilizes a geomembrane for a liner or utilizes a geomembrane or geomembrane-GCL for a capping layer shall provide the following design details and specifications for the geosynthetic components. The department may specify additional requirements for other geosynthetic materials used in significant structural features of the landfill. (a) A description of the proposed geomembranes, GCLs and other geosynthetics to be used in construction of the landfill, including resins and additives, physical properties, bentonite characteristics, chemical resistance properties and potential suppliers. For GCLs, this shall include identification of the geotextile properties and reinforcement. (b) Design calculations that demonstrate the stability of the landfill and its components against failure along potential failure surfaces, such as the leachate collection system and final cover, during operations as well as after closure. Potential failure surfaces considered shall include the interfaces both below and above the geomembrane in the liner and final cover. Potential failure scenarios considered shall include both saturated and unsaturated conditions for the cover. The design calculations may use typical data or specifications from technical literature rather than values from testing of site specific materials if the sources of the typical data or specifications and the test methods used to generate them are cited with the calculations and a safety factor of at least 1.3 is used to assess stability. (c) Construction methods and supervisory controls for preparing the surface of the topmost lift of compacted clay prior to the installation of a geomembrane or soil barrier layer prior to installation of a GCL. The plan of operation shall propose inspection methods and removal of coarse gravel or cobbles after rolling the topmost lift of compacted clay or soil barrier layer to achieve a smooth surface. (d) A description of measures to be taken to store and protect all geomembranes, GCLs and geocomposite drains, transport geomembrane, GCL and geocomposite drain panels from storage to the working area, and construction methods to be used to place geomembrane, GCL and geocomposite drain panels. (e) The proposed orientation of all geomembrane and GCL panels for the landfill liner and capping layer in relation to slope, collection trenches, penetrations, anchor trench and phase boundaries, seaming methods and phased construction. (f) Typical design details of geomembrane and GCL seams and seaming methods, anchor trenches, patches, collars for all penetrations, installation in corners and leachate collection trenches. The plan of operation shall describe acceptable working conditions for geomembrane, GCL and geocomposite drain installation, installation instructions for working under weather variations and extremes, and criteria for halting or limiting GCL and geomembrane installation. (g) Proposed methods for testing welds or other joining methods for geomembranes and other components or penetrations if geomembranes used in previously constructed phases are obtained from different manufacturers or are made from different resins. The plan of operation shall also include measures to preserve the edges of geomembranes and GCLs to be joined to future phases and describe measures to repair all geomembrane, GCL and geocomposite drain defects, unacceptable wrinkling, and unacceptable seams. (h) Construction methods for placing the leachate collection system, sump backfill, and sideslope riser over the composite liner; the first 10 feet of wastes over the leachate collection system; and subsurface drain layer and rooting zone soils over the composite cap. The measures shall assure that the geomembrane and GCLs are not damaged by construction of soil layers, placement or compaction of wastes, waste consolidation or mass movements or puncturing of the geomembrane. (i) 1. A construction quality control plan that will be followed by all contractors preparing the surface of the sub-base, compacted clay liner, or soil barrier layer; constructing the geomembrane liner; or placing drainage blanket. The construction quality control plan shall include means for determining and documenting all of the following: a. Receipt of the proper geomembrane, GCL and geocomposite drain material or other geosynthetics proposed for use. b. Acceptable subgrade and weather conditions for work to occur. c. Seamer qualifications and procedures for trial seams. d. Acceptability of test welds and machine settings. e. Acceptable seaming practices. f. Achieved seam quality and procedures for dealing with failing tests. g. Patching or sealing of geomembrane penetrations. 2. The construction quality control plan shall also describe how progress in construction, as well as any variations from the approved plans, will be recorded and reported. (j) A construction quality assurance plan that will be followed by the registered professional engineer and qualified technician responsible for evaluating the construction and ensuring that the fabrication and installation meet design specifications. The construction quality assurance plan shall include continuous observation of all aspects of geomembrane, GCL, geocomposite drain, and other geosynthetic installation activities by qualified engineers or technicians. The construction quality assurance plan shall include use of nondestructive and destructive testing of seams and samples and shall propose a schedule of tests and associated frequencies in accordance with those specified in ch. NR 516 . The construction quality assurance plan shall include proposed methods of verifying the acceptability of the prepared subgrade, repairs, patches, penetrations, seams, and adaptations by the owner and contractors to unforeseen conditions. The construction quality assurance plan shall include acceptable welding practices for extrusion and fusion welding techniques as well as outlining any visual screening techniques that will be used in the field to determine the quality of a fusion or extrusion weld. (k) An outline of the contents of the anticipated preconstruction submittal which complies with the requirements of s. NR 516.04 (5) concerning geomembrane and GCL construction and which will be prepared and submitted prior to each construction event. (L) A construction quality assurance plan for conducting a leak location survey on the installed geomembrane. The leak location survey shall be conducted after placement of the leachate collection layer for a composite liner. The quality assurance plan shall include continuous observation of all aspects of the leak location survey testing by qualified professional engineers or technicians. The quality assurance plan shall include use of nondestructive methods to detect, locate and verify repairs of defects in geomembrane. The quality assurance plan may include electrical resistivity testing or other testing methods acceptable to the department. (2) Codisposal of industrial solid wastes. The plan of operation for any landfill which accepts municipal solid wastes shall describe measures to be taken for the disposal of solid wastes from industrial sources, cleanups of spills and contaminated sites, or other commercial activities. The plan of operation shall propose lists of waste categories, testing protocols and schedules, and disposal protocols. The plan of operation shall describe the format for transmitting summary information to the department. (3) Closure of landfills with composite liners and composite caps. The plan of operation for any landfill that accepts municipal solid wastes may propose to delay final cover placement for up to 2 years after attaining either final waste grades or maximum interim waste grades, if approved by the department under sub. (11) , in each phase of closure provided the following requirements are followed: (a) Intermediate cover consisting of a minimum of one foot of soil shall be placed and the area shall be seeded as portions of a phase reach waste final grades. (b) No additional waste placement shall occur in areas which have reached waste final grades and received intermediate cover. (c) For landfills designed with active gas extraction systems, the components of the active gas extraction system within each phase shall be installed and made operational following attainment of waste final grades within that phase. The blower, flare, driplegs, controls, condensate handling, and appurtenances of the gas extraction system shall be installed prior to or as part of the attainment of waste final grades within the first phase of waste filling. (4) Closure of papermill sludge landfills. The plan of operation for a landfill designed to accept pulp and papermill sludges or other low-strength wastes may propose that final cover placement be delayed after completing placement of the support layer in each phase of closure. The time period of the delay shall be limited to 2 years unless otherwise approved by the department. The proposal shall also justify why the delay in final cover placement is warranted. (5) Municipal solid waste combustor residue management plans. The plan of operation for any landfill which proposes to accept municipal solid waste combustor residue shall include a residue management plan. The department may approve residue management plans for facilities which have approved plans which are substantially equivalent to the requirements of ss. NR 514.04 to 514.08 . (a) All residue management plans shall contain the name and location of the proposed sources and the expected volume from each source of municipal solid waste combustor residue to be accepted. (b) All residue management plans shall establish a timetable for evaluating the results of the testing requirements of s. NR 502.13 (8) and any trends in the results from previous testing periods to determine the need for any changes to the proposed landfill design or operation. (c) The residue management plan shall include plan sheets which address the design requirements of s. NR 504.11 and include plan views, cross-sections and details as necessary to illustrate the applicable design features of the portion of the landfill which will be utilized for disposal of municipal solid waste combustor residue. Phasing plan sheets shall also be included to show development of that portion of the landfill through time. (d) The residue management plan shall contain an operations manual and design report which describes the daily operation of the portion of the landfill to be utilized for disposal of municipal solid waste combustor residue, including a discussion of the timetable for the phases of development; waste types accepted or excluded; typical waste handling techniques and methods for handling unusual waste types; hours of operation; traffic routing; drainage and erosion control; windy, wet and cold weather disposal operations; methods for dust control; and direction of filling. Methods to maintain compliance with the requirements of s. NR 506.15 shall also be described. (e) The residue management plan shall propose any modifications to the groundwater, unsaturated zone and leachate monitoring program necessary to comply with the requirements of ch. NR 507 . (6) Other requirements. The plan of operation shall provide the following details and specifications, where applicable. The department may specify additional requirements. (a) Descriptions of alternative cover materials to be used for daily or intermediate cover. (b) Description of a 24 hour leak test for the geomembrane component of lysimeters and sumps for sideslope risers. Alternative leak detection methods, such as electrical resistivity may be proposed. (c) Documentation of the strength of the selected resin, diameter and wall thickness of the sideslope riser pipe, with regard to maximum overburden weight over the sumps of municipal solid waste or industrial waste at field capacity. The plan of operation shall include a description of physical and hydraulic specifications of commercially available pumps that are able to traverse any bend or elbow in the riser pipe to reach design pump intake position, for both placement and removal. The description shall include cross-sections of the riser pipe bends and the pumps when wheels, connectors, hoses, electrical leads and head level controls are attached. Pump selection shall be based on the maximum pumping capacity needed for the highest calculated leachate flow rates, including potential leachate recirculation. (6m) Contiguous landfill expansions. The plan of operation for any proposed landfill that is either a vertical or horizontal expansion to an existing approved facility shall include all of the following: (am) A summary of all applicable conditions of department issued, chs. NR 500 to 538 , approvals or orders that are active and subject to compliance at the time of the plan of operation report submittal. The summary shall be submitted on forms provided by the department and at a minimum shall contain all of the following: 1. A chronological listing of all department issued chs. NR 500 to 538 approvals, orders and expedited plan modifications deemed as acceptable by the department under s. NR 514.09 for the existing landfill. 2. A listing of all approval conditions or order conditions that are active and subject to compliance at the time of the plan of operation report submittal. 3. The status of each condition listed under subd. 2. shall be identified as: a. “Remain active”: The applicant intends to continue to meet the requirement of the condition in the proposed expansion. b. “Comparable code”: The applicant believes the requirement of the condition is addressed in chs. NR 500 to 538 . c. “Alternative proposed”: The applicant believes the condition is no longer required due to changes in the proposed plan of operation report. 4. Identification of specific applicable codes, plan of operation report sections, or further justification to support the applicant’s recommended status category under subd. 3. 5. The department shall provide a summary of the facility’s active approval conditions or order conditions as an informational attachment to the plan of operation determination. This summary shall consider the applicant’s recommended status under subd. 3. and any applicable department issued conditions in the plan of operation determination. A department summary under this subdivision does not relieve the applicant of the compliance requirement of any condition prior to the issuance of the summary. (bm) An evaluation of the existing leachate collection system that includes all of the following at a minimum: 1. Pipe strength calculations for the leachate collection pipes within the vertical or horizontal overlay area. 2. An evaluation of performance of the existing facility’s leachate collection system. 3. An evaluation of the existing facility’s leachate collection tank storage capacity, including the proposed location and size of any additional tanks needed. 4. An evaluation of the existing facility’s leachate collection tanks to determine the integrity of the tanks and the cathodic protection on the tanks, including proposed modifications to the tanks or cathodic protection of the tanks. 5. If the facility has a direct connection to a sanitary sewer, an evaluation of the existing facility’s piping to the sanitary sewer and an evaluation of the wastewater treatment plant’s ability to manage and treat the additional leachate from the expansion. (cm) An evaluation of the existing gas extraction system to determine if additional landfill gas generated by the proposed landfill will require changes to the existing gas transfer piping, condensate removal system, blower, flare, or gas utilization system, including any proposed modifications to the gas extraction system. (dm) An evaluation of the existing litter control plan and proposed modifications to the plan. (em) An evaluation of the existing odor control plan and proposed modifications to the plan. (fm) An evaluation of the existing leachate recirculation plan and proposed modifications to the plan. (gm) An evaluation of the existing organic stability plan and proposed modifications to the plan.