2015-03-10_PERMIT FILE - M2014066

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3110/2015 eCFR — Code of Federal Regulations (A) The chromium in the waste is exclusively (or nearly exclusively) trivalent chromium; and (B) The waste is generated from an industrial process which uses trivalent chromium exclusively (or nearly exclusively) and the process does not generate hexavalent chromium; and (C) The waste is typically and frequently managed in non - oxidizing environments. (ii) Specific wastes which meet the standard in paragraphs (b)(6)(i) (A), (B), and (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: (A) Chrome (blue) trimmings 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; retan/wet finish; no beamhouse; through- the -blue; and shearling. (B) Chrome (blue) shavings 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; retan /wet finish; no beamhouse; through- the -blue; and shearling. (C) Buffing dust 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; retan /wet finish; no beamhouse; through- the -blue. (D) Sewer screenings 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; retan /wet finish; no beamhouse; through- the -blue; and shearling. (E) Wastewater treatment sludges generated by the following subcategories of the leather tanning and finishing industry: Hair pulp /chrome tan /retanlwet finish; hair save /chrome tan /retan /wet finish; retanlwet finish; no beamhouse; through- the -blue; and shearling. (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. (G) Waste scrap leather from the leather tanning industry, the shoe manufacturing industry, and other leather product manufacturing industries. (H) Wastewater treatment sludges from the production of TiO2 pigment using chromium - bearing ores by the chloride process. (7) 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 by §266.112 of this chapter for facilities that burn or process hazardous waste. (i) For purposes of §261.4(b)(7) beneficiation of ores and minerals is restricted to the following activities; crush' n ; grindin ;washing; dissolution; crystallization; filtration; sorting; sizin drying; sintering; pel etizing; briquetting; calcining to remove water and /or carbon dioxide; roasting, autoclaving, and /or chlorination in preparation for leaching (except where the roasting (and /or autoclaving and /or chlorination) /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, va`a t, tank, and in situ leaching. (ii) For the purposes of §261.4(b)(7), solid waste from the processing of ores and minerals includes only the following wastes as generated: (A) Slag from primary copper processing; (B) Slag from primary lead processing; file: / / /C:Nsers! c/Dowri cads /C ode %20of%20Federal %20Regtd ati ons %20Tifle %2040, %20Section%20261.4.triml 14Y23