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Title 40

Displaying title 40, up to date as of 9/03/2026. Title 40 was last amended 8/31/2026.
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§ 430.30 Applicability; description of the unbleached kraft subcategory.

The provisions of this subpart are applicable to discharges resulting from: the production of pulp and paper at unbleached kraft mills; the production of pulp and paper at unbleached kraft-neutral sulfite semi-chemical (cross recovery) mills; and the production of pulp and paper at combined unbleached kraft and semi-chemical mills, wherein the spent semi-chemical cooking liquor is burned within the unbleached kraft chemical recovery system.