§ 61.202. Standard.
75 words·~1 min read·
/us/cfr/t40/s§ 61.202·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Each person who generates phosphogypsum shall place all phosphogypsum in stacks. Phosphogypsum may be removed from a phosphogypsum stack only as expressly provided by this subpart. After a phosphogypsum stack has become an inactive stack, the owner or operator shall assure that the stack does not emit more than 20 pCi/(m 2-sec) (1.9 pCi/(ft 2-sec)) of radon-222 into the air. [57 FR 23317, June 3, 1992, as amended at 65 FR 62158, Oct. 17, 2000]