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Title 40: Protection of Environment
CHAPTER I: ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
SUBCHAPTER N: EFFLUENT GUIDELINES AND STANDARDS
PART 420: IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY
Subpart D: Steelmaking Subcategory
420.42 - 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) Electric arc furnace steelmaking?semi-wet. No discharge of process wastewater pollutants to navigable waters.
(b) Basic oxygen furnace steelmaking?wet-suppressed combustion.
| Pollutant or pullutant property | BPT effluent limitations | Maximum for any 1 day | Average of daily values for 30 consecutive days |
| Kg/kkg (pounds per 1,000 lb) of Product | ||
| TSS | 0.0312 | 0.0104 |
| pH | (1) | (1) |
(c) Basic oxygen furnace steelmaking?wet open combustion; and electric arc furnace steelmaking?wet.
| Pollutant or pollutant property | BPT effluent limitations | Maximum for any 1 day | Average of daily values for 30 consecutive days |
| Kg/kkg (pounds per 1,000 lb) of product | ||
| TSS | 0.0687 | 0.0229 |
| pH | (1) | (1) |
(d) Basic oxygen furnace steelmaking?semi-wet. (1) No discharge of process wastewater pollutants to navigable waters.
(2) If the permittee demonstrates to the satisfaction of the permitting authority that safety considerations prevent attainment of these limitations, the permitting authority may establish alternative limitations on a best professional judgment basis.
[47 FR 23284, May 27, 1982, as amended at 67 FR 64267, Oct. 17, 2002]
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