Section 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(ii) HCl at a mass emission rate that corresponds to a collection efficiency of less than 99 percent.(2)Batch pickling lines. No owner or operator of a new or reconstructed affected batch 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 18 ppmv; or(ii) HCl at a mass emission rate that corresponds to a collection efficiency of less than 97 percent.(b)Hydrochloric acid regeneration plants.(1) No owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain HCl in a concentration greater than 12 ppmv.(2) In addition to the requirement of paragraph (b)(1) of this section, no owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain Cl2 in a concentration in excess of 6 ppmv.