NR 661.0004(2)(a)(a) Household waste, including household waste that has been collected, transported, stored, treated, disposed, recovered, such as refuse-derived fuel, or reused, except if the hazardous waste in this waste stream is separated for management at a collection facility regulated under subch. HH of ch. NR 666. “Household waste” means any material, including garbage, trash and sanitary wastes in septic tanks, derived from households, including single and multiple residences, hotels and motels, bunkhouses, ranger stations, crew quarters, campgrounds, picnic grounds and day-use recreation areas. A resource recovery facility managing municipal solid waste may not be deemed to be treating, storing, disposing of or otherwise managing hazardous wastes for the purposes of regulation under chs. NR 660 to 673, if the facility does all of 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)(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)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)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.