Code of Federal Regulations · Section
§ 421.270 — Applicability: Description Of The Primary Rare Earth Metals Subcategory
40 C.F.R. § 421.270
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The provisions of this subpart are applicable to discharges resulting from the production of rare earth metals and mischmetal by primary rare earth metals facilities processing rare earth metal oxides, chlorides, and fluorides.
Authorizing Statute
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Effluent limitations33 U.S.C. § 1311