40 CFR 421.110 - Applicability: Description of the primary columbium-tantalum subcategory.
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The provisions of this subpart are applicable to discharges resulting from the production of columbium or tantalum by primary columbium-tantalum facilities.
[49 FR 8817, Mar. 8, 1984]
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.