Chapter NR 661

NR 661.0004(2)(a)1. 1. Receives and burns only the following:

NR 661.0004(2)(a)1.a. a. Household waste from single and multiple dwellings, hotels, motels, and other residential sources.

NR 661.0004(2)(a)1.b. b. Solid waste from commercial or industrial sources that does not contain hazardous waste.

NR 661.0004(2)(a)2. 2. Does not accept hazardous wastes and the owner or operator of the facility has established contractual requirements or other appropriate notification or inspection procedures to assure that hazardous wastes are not received at or burned in the facility.

NR 661.0004(2)(b) (b) Solid wastes generated by any of the following and that are returned to the soils as fertilizers:

NR 661.0004(2)(b)1. 1. The growing and harvesting of agricultural crops.

NR 661.0004(2)(b)2. 2. The raising of animals, including animal manures.

NR 661.0004(2)(c) (c) Mining overburden returned to the mine site.

NR 661.0004(2)(d) (d) All of the following:

NR 661.0004(2)(d)1. 1. Fly ash waste, bottom ash waste, slag waste, and flue gas emission control waste generated primarily from the combustion of coal or other fossil fuels, except as provided by s. NR 666.112 for facilities that burn or process hazardous waste.

NR 661.0004(2)(d)2. 2. All of the following wastes generated primarily from processes that support the combustion of coal or other fossil fuels that are co-disposed with the wastes in subd. 1., except as provided by s. NR 666.112 for facilities that burn or process hazardous waste:

NR 661.0004(2)(d)2.a. a. Coal pile run-off. For the purposes of par. (d), “coal pile run-off” means any precipitation that drains off coal piles.

NR 661.0004(2)(d)2.b. b. Boiler cleaning solutions. For the purposes of par. (d), “boiler cleaning solutions” means water solutions and chemical solutions used to clean the fire-side and water-side of the boiler.

NR 661.0004(2)(d)2.c. c. Boiler blowdown. For the purposes of par. (d), “boiler blowdown” means water purged from boilers used to generate steam.

NR 661.0004(2)(d)2.d. d. Process water treatment and demineralizer regeneration wastes. For the purposes of par. (d), “process water treatment and demineralizer regeneration wastes” means sludges, rinses, and spent resins generated from processes to remove dissolved gases, suspended solids, and dissolved chemical salts from combustion system process water.

NR 661.0004(2)(d)2.e. e. Cooling tower blowdown. For the purposes of par. (d), “cooling tower blowdown” means water purged from a closed cycle cooling system. Closed cycle cooling systems include cooling towers, cooling ponds, or spray canals.

NR 661.0004(2)(d)2.f. f. Air heater and precipitator washes. For the purposes of par. (d), “air heater and precipitator washes” means wastes from cleaning air preheaters and electrostatic precipitators.

NR 661.0004(2)(d)2.g. g. Effluents from floor and yard drains and sumps. For the purposes of par. (d), “effluents from floor and yard drains and sumps” means wastewaters, such as wash water, collected by or from floor drains, equipment drains, and sumps located inside the power plant building; and wastewaters, such as rain runoff, collected by yard drains and sumps located outside the power plant building.

NR 661.0004(2)(d)2.h. h. Wastewater treatment sludges. For the purposes of par. (d), “wastewater treatment sludges” refers to sludges generated from the treatment of wastewaters specified in subd. 2. a. to f.

NR 661.0004(2)(e) (e) Drilling fluids, produced waters, and other wastes associated with the exploration, development, or production of crude oil, natural gas or geothermal energy.

NR 661.0004(2)(f) (f) All of the following:

NR 661.0004(2)(f)1. 1. Wastes that fail the test for the Toxicity Characteristic specified in s. NR 661.0024 because chromium is present or are listed in subch. D due to the presence of chromium, which do not fail the test for the Toxicity Characteristic for any other constituent or are not listed due to the presence of any other constituent, and which do not fail the test for any other characteristic, if it is shown by a waste generator or by waste generators that all of the following apply:

NR 661.0004(2)(f)1.a. a. The chromium in the waste is exclusively (or nearly exclusively) trivalent chromium.

NR 661.0004(2)(f)1.b. b. The waste is generated from an industrial process that uses trivalent chromium exclusively, or nearly exclusively, and the process does not generate hexavalent chromium.

NR 661.0004(2)(f)1.c. c. The waste is typically and frequently managed in non-oxidizing environments.

NR 661.0004(2)(f)2. 2. Specific wastes that meet the standard in subd. 1. a. to c., so long as they do not fail the test for the Toxicity Characteristic for any other constituent, and do not exhibit any other characteristic, are any of the following:

NR 661.0004(2)(f)2.a. a. Chrome blue trimmings generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue, and shearling.

NR 661.0004(2)(f)2.b. b. Chrome blue shavings generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue, and shearling.

NR 661.0004(2)(f)2.c. c. Buffing dust generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue.

NR 661.0004(2)(f)2.d. d. Sewer screenings generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue, and shearling.

NR 661.0004(2)(f)2.e. e. Wastewater treatment sludges generated by the following subcategories of the leather tanning and finishing industry: Hair pulp/chrome tan/retan/wet finish; hair save/chrome tan/retan/wet finish; and through-the-blue.

NR 661.0004(2)(f)2.f. f. Wastewater treatment sludges generated by the following subcategories of the leather tanning and finishing industry: Hair pulp/chrome tan/retan/wet finish; hair save/chrome tan/retan/wet finish; and through-the-blue.

NR 661.0004(2)(f)2.g. g. Waste scrap leather from the leather tanning industry, the shoe manufacturing industry, and other leather product manufacturing industries.

NR 661.0004(2)(f)2.h. h. Wastewater treatment sludges from the production of TiO2 pigment using chromium-bearing ores by the chloride process.

NR 661.0004(2)(g) (g) Solid waste from the extraction, beneficiation, and processing of ores and minerals, including coal, phosphate rock, and overburden from the mining of uranium ore, except as provided under s. NR 666.112 for facilities that burn or process hazardous waste.

NR 661.0004(2)(g)1. 1. For the purposes of this paragraph, beneficiation of ores and minerals is restricted to the following activities: crushing; grinding; washing; dissolution; crystallization; filtration; sorting; sizing; drying; sintering; pelletizing; briquetting; calcining to remove water or carbon dioxide; roasting, autoclaving, or chlorination in preparation for leaching, except where the roasting, autoclaving, chlorination, or leaching sequence produces a final or intermediate product that does not undergo further beneficiation or processing; gravity concentration; magnetic separation; electrostatic separation; flotation; ion exchange; solvent extraction; electrowinning; precipitation; amalgamation; and heap, dump, vat, tank, and in situ leaching.

NR 661.0004(2)(g)2. 2. For the purposes of this paragraph, solid waste from the processing of ores and minerals includes only the following wastes as generated:

NR 661.0004(2)(g)2.a. a. Slag from primary copper processing.

NR 661.0004(2)(g)2.b. b. Slag from primary lead processing.

NR 661.0004(2)(g)2.c. c. Red and brown muds from bauxite refining.

NR 661.0004(2)(g)2.d. d. Phosphogypsum from phosphoric acid production.

NR 661.0004(2)(g)2.e. e. Slag from elemental phosphorus production.

NR 661.0004(2)(g)2.f. f. Gasifier ash from coal gasification.

NR 661.0004(2)(g)2.g. g. Process wastewater from coal gasification.

NR 661.0004(2)(g)2.h. h. Calcium sulfate wastewater treatment plant sludge from primary copper processing.

NR 661.0004(2)(g)2.i. i. Slag tailings from primary copper processing.

NR 661.0004(2)(g)2.j. j. Fluorogypsum from hydrofluoric acid production.

NR 661.0004(2)(g)2.k. k. Process wastewater from hydrofluoric acid production.

NR 661.0004(2)(g)2.L. L. Air pollution control dust/sludge from iron blast furnaces.

NR 661.0004(2)(g)2.m. m. Iron blast furnace slag.

NR 661.0004(2)(g)2.n. n. Treated residue from roasting/leaching of chrome ore.

NR 661.0004(2)(g)2.o. o. Process wastewater from primary magnesium processing by the anhydrous process.

NR 661.0004(2)(g)2.p. p. Process wastewater from phosphoric acid production.

NR 661.0004(2)(g)2.q. q. Basic oxygen furnace and open hearth furnace air pollution control dust/sludge from carbon steel production.

NR 661.0004(2)(g)2.r. r. Basic oxygen furnace and open hearth furnace slag from carbon steel production.

NR 661.0004(2)(g)2.s. s. Chloride process waste solids from titanium tetrachloride production.

NR 661.0004(2)(g)2.t. t. Slag from primary zinc processing.

NR 661.0004(2)(g)3. 3. A residue derived from co-processing mineral processing secondary material with normal beneficiation raw materials or with normal mineral processing raw materials remains excluded under this subsection if the owner or operator does all of the following:

NR 661.0004(2)(g)3.a. a. Processes at least 50 percent by weight normal beneficiation raw materials or normal mineral processing raw materials.

NR 661.0004(2)(g)3.b. b. Legitimately reclaims the secondary mineral processing materials.

NR 661.0004(2)(h) (h) Cement kiln dust waste, except as provided by s. NR 666.112 for facilities that burn or process hazardous waste.

NR 661.0004(2)(i) (i) Solid waste that consists of discarded arsenical-treated wood or wood products that fails the test for the Toxicity Characteristic for Hazardous Waste Codes D004 through D017 and that is not a hazardous waste for any other reason if the waste is generated by persons who utilize the arsenical-treated wood and wood products for these materials’ intended end use.

NR 661.0004(2)(j) (j) Petroleum-contaminated media and debris that fail the test for the Toxicity Characteristic specified in s. NR 661.0024 for any of the hazardous waste codes D018 through D043 only, and are subject to the corrective action rules under chs. ATCP 93 and NR 706.

NR 661.0004(2)(L) (L) Used chlorofluorocarbon refrigerants from totally enclosed heat transfer equipment, including mobile air conditioning systems, mobile refrigeration, and commercial and industrial air conditioning and refrigeration systems that use chlorofluorocarbons as the heat transfer fluid in a refrigeration cycle, provided the refrigerant is reclaimed for further use.

NR 661.0004(2)(m) (m) Non-terne plated used oil filters that are not mixed with wastes listed in subch. D if these oil filters have been gravity hot-drained using one of the following methods:

NR 661.0004(2)(m)1. 1. Puncturing the filter anti-drain back valve or the filter dome end and hot-draining.

NR 661.0004(2)(m)2. 2. Hot-draining and crushing.

NR 661.0004(2)(m)3. 3. Dismantling and hot-draining.

NR 661.0004(2)(m)4. 4. Any other equivalent hot-draining method that will remove used oil.

NR 661.0004(2)(n) (n) Used oil re-refining distillation bottoms that are used as feedstock to manufacture asphalt products.

NR 661.0004(2)(o) (o) Leachate or gas condensate collected from landfills where certain solid wastes have been disposed, provided that all of the following are met:

NR 661.0004(2)(o)1. 1. The solid wastes disposed would meet one or more of the listing descriptions for hazardous waste codes K169, K170, K171, K172, K174, K175, K176, K177, K178, and K181 if these wastes had been generated after the effective date of the listing.

NR 661.0004(2)(o)2. 2. The solid wastes described in subd. 1. were disposed prior to the effective date of the listing.

NR 661.0004(2)(o)3. 3. The leachate or gas condensate do not exhibit any characteristic of hazardous waste nor are derived from any other listed hazardous waste.

NR 661.0004(2)(o)4. 4. Discharge of the leachate or gas condensate, including leachate or gas condensate transferred from the landfill to a POTW by truck, rail, or dedicated pipe, is subject to regulation under ch. 283, Stats., or 33 USC 1317 (b) or 1342.

NR 661.0004(2)(o)5. 5. As of February 13, 2001, leachate or gas condensate derived from K169 to K172 is no longer exempt if it is stored or managed in a surface impoundment prior to discharge. As of November 21, 2003, leachate or gas condensate derived from K176, K177, and K178 is no longer exempt if it is stored or managed in a surface impoundment prior to discharge. After February 26, 2007, leachate or gas condensate derived from K181 will no longer be exempt if it is stored or managed in a surface impoundment prior to discharge. One exception to these requirements is the following: if the surface impoundment is used to temporarily store leachate or gas condensate in response to an emergency situation, such as shutdown of wastewater treatment system, provided the impoundment has a double liner, and provided the leachate or gas condensate is removed from the impoundment and continues to be managed in compliance with the conditions of this subdivision after the emergency ends.

NR 661.0004(2)(r) (r) Solvent-contaminated wipes, except for wipes that are hazardous waste due to the presence of trichloroethylene, that are sent for disposal are not hazardous wastes from the point of generation provided all of the following are met:

NR 661.0004(2)(r)1. 1. The solvent-contaminated wipes, when accumulated, stored, and transported, are contained in non-leaking, closed containers that are labeled “Excluded Solvent-Contaminated Wipes.” The containers shall be able to contain free liquids, should free liquids occur. During accumulation, a container is considered closed when there is complete contact between the fitted lid and the rim, except when it is necessary to add or remove solvent-contaminated wipes. When the container is full, or when the solvent-contaminated wipes are no longer being accumulated, or when the container is being transported, the container shall be sealed with all lids properly and securely affixed to the container and all openings tightly bound or closed sufficiently to prevent leaks and emissions.

NR 661.0004(2)(r)2. 2. The solvent-contaminated wipes may be accumulated by the generator for up to 180 days from the start date of accumulation for each container prior to being sent for disposal.

NR 661.0004(2)(r)3. 3. At the point of being transported for disposal, the solvent-contaminated wipes shall contain no free liquids as defined in s. NR 660.10 (48).

NR 661.0004(2)(r)4. 4. Free liquids removed from the solvent-contaminated wipes or from the container holding the wipes shall be managed according to the applicable regulations under chs. NR 660 to 667.

NR 661.0004(2)(r)5. 5. A generator shall maintain at its site all of the following documentation:

NR 661.0004(2)(r)5.a. a. Name and address of the landfill or combustor that is receiving the solvent-contaminated wipes.

NR 661.0004(2)(r)5.b. b. Documentation that the 180 day accumulation time limit in subd. 2. is being met.

NR 661.0004(2)(r)5.c. c. Description of the process the generator is using to ensure solvent-contaminated wipes contain no free liquids at the point of being transported for disposal.

NR 661.0004(2)(r)6. 6. The solvent-contaminated wipes are sent for disposal to any of the following:

NR 661.0004(2)(r)6.a. a. To a municipal solid waste landfill regulated under 40 CFR part 258, including 40 CFR 258.40, or to a hazardous waste landfill regulated under ch. NR 664 or 665.

NR 661.0004(2)(r)6.b. b. To a municipal waste combustor or other combustion facility regulated under 42 USC 7429, or to a hazardous waste combustor, boiler, or industrial furnace regulated under ch. NR 664 or 665 or subch. H of ch. NR 666.

NR 661.0004(3) (3) Hazardous Wastes That Are Exempted From Certain Regulations. A hazardous waste generated in a product or raw material storage tank, a product or raw material transport vehicle or vessel, a product or raw material pipeline, or in a manufacturing process unit or an associated non-waste-treatment-manufacturing unit, is not subject to regulation under chs. NR 662 to 665, 668, and 670 or to the notification requirements specified in s. NR 660.07 until it exits the unit in which it was generated, unless the unit is a surface impoundment, or unless the hazardous waste remains in the unit more than 90 days after the unit ceases to be operated for manufacturing, or for storage or transportation of product or raw materials.