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.