40 CFR § 420.32 - 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/s420.32"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 420.32 - 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: "420.32"
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: "420"
part_name: "IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361."
regulatory_source: "47 FR 23284, May 27, 1982, unless otherwise noted."
cfr_part: "420"
---
# 420.32 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.
(a) *Iron blast furnace.*
Subpart C
| | | |
| --- | --- | --- |
| | Kg/kkg (pounds per 1,000 lb) of product | |
| TSS | 0.0782 | 0.0260 |
| Ammonia-N | 0.161 | 0.0537 |
| Cyanide | 0.0234 | 0.00782 |
| Phenols (4AAP) | 0.00626 | 0.00210 |
| pH | () | () |
| Within the range of 6.0 to 9.0. | | |
(b) [Reserved]
[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982, as amended at 67 FR 64266, Oct. 17, 2002]