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§ 63.1158 Emission standards for new or reconstructed sources.
(a) Pickling lines—(1) Continuous pickling lines. No owner or operator of a new or reconstructed affected continuous pickling line at a steel pickling facility shall cause or allow to be discharged into the atmosphere from the affected pickling line:
(i) Any gases that contain HCl in a concentration in excess of 6 ppmv; or