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40 CFR § 430.30 - Applicability; description of the unbleached kraft subcategory.

---
identifier: "/us/cfr/t40/s430.30"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 430.30 - Applicability; description of the unbleached kraft subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "430.30"
section_name: "Applicability; description of the unbleached kraft subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "430"
part_name: "THE PULP, PAPER, AND PAPERBOARD POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sections 301, 304, 306, 307, 308, 402, and 501 of the Clean Water Act, as amended, (33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361), and Section 112 of the Clean Air Act, as amended (42 U.S.C. 7412)."
regulatory_source: "63 FR 18635, Apr. 15, 1998, unless otherwise noted."
cfr_part: "430"
---

# 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.