C.F.R. » Title 40 » CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY › SUBCHAPTER C—AIR PROGRAMS › PART 57—PRIMARY NONFERROUS SMELTER ORDERS › Subpart E—Fugitive Emission Evaluation and Control

40 C.F.R. § 57.505

Amendments of the NSO

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An NSO shall be amended within three months of submission of any report required under § 57.504 so as to require additional fugitive emission control measures if such report establishes that such additional measures are necessary to assure that the NAAQS will be maintained with a reasonable degree of reliability.