§ 123.24. Primary zinc smelters.
(a) No person may permit the emission into the outdoor atmosphere of sulfur oxides from any zinc roasting operation in such a manner that the concentration of sulfur oxides, expressed as SO2, in the effluent gas exceeds 500 parts per million by volume, dry basis, calculated as a 2-hour moving average.
(b) No person may permit the emission into the outdoor atmosphere of sulfur oxides from any zinc sintering operation in excess of the rate calculated by the following formula:
Y = 0.054X,
X = Calcine feed rate to the sinter plant (lbs/hr); and
Y = Allowable sulfur oxide emissions (lbs/hr).
The provisions of this § 123.24 adopted July 25, 1975, effective August 11, 1975, 5 Pa.B. 1916.
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