1. Affected sources at kraft, soda, sulfite, or stand-alone semichemical pulp mills that are Major Sources of HAPs*.

1. Existing chemical recovery systems at kraft or soda pulp mills;
2. New nondirect contact evaporator recovery furnaces and associated smelt dissolving tanks at kraft or soda pulp mills;
3. New direct contact evaporator recovery furnace systems and associated smelt dissolving tanks at kraft or soda pulp mills;
4. New lime kilns at kraft or soda pulp mills;
5. Sulfite combustion units at sulfite pump mills;
1. Except Unit # AP-10 at Weyerhaeuser Paper Company's Cosmopolis Washington facility.
6. Semichemical combustion units at stand-alone semichemical pulp mills.

• ≥ 10 tons/year of any single HAP; or
• ≥ 25 tons/year of total HAPs.
• Area Sources emit less than Major Sources.

Previously: Chapter 28, Section 001.51.

Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.