Emission of sulfur dioxide and sulfuric acid mist from any one kiln used for the roasting of spodumene ore shall not exceed:

1. (1) 9.7 pounds of sulfur dioxide per ton of ore roasted; and
2. (2) 1.0 pound of sulfuric acid mist, expressed as H₂SO₄, per ton of ore roasted.

History Note: Authority G.S. 143‑215.3(a)(1); 143‑215.107(a)(5);
Eff. March 15, 1978;
Amended Eff. January 1, 1985;
Readopted Eff. November 1, 2020.