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40 CFR § 430.32 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

---
identifier: "/us/cfr/t40/s430.32"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 430.32 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)."
title_number: 40
title_name: "Protection of Environment"
section_number: "430.32"
section_name: "Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)."
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"
---

# 430.32 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

Subpart C

[BPT effluent limitations for unbleached kraft facilities]

|  |  |  |
| --- | --- | --- |
| BOD5 | 5.6 | 2.8 |
| TSS | 12.0 | 6.0 |
| pH | () | () |
| Within the range of 6.0 to 9.0 at all times. |  |  |

Subpart C

[BPT effluent limitations for unbleached kraft facilities producing pulp and paper using the unbleached kraft-neutral sulfite semi-chemical (cross recovery) process]

|  |  |  |
| --- | --- | --- |
| BOD5 | 8.0 | 4.0 |
| TSS | 12.5 | 6.25 |
| pH | () | () |
| Within the range of 6.0 to 9.0 at all times. |  |  |

Subpart C

[BPT effluent limitations for unbleached kraft facilities where pulp and paper are produced using a combined unbleached kraft and semi-chemical process, wherein the spent semi-chemical cooking liquor is burned within the unbleached kraft chemical recovery system]

|  |  |  |
| --- | --- | --- |
| BOD5 | () | () |
| TSS | () | () |
| pH | () | () |
| [Reserved] |  |  |