40 C.F.R. § 420.42

Current through September 30, 2024

Section 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.

Subpart D

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)

¹ Within the range of 6.0 to 9.0

(c)Basic oxygen furnace steelmaking-wet open combustion; and electric arc furnace steelmaking-wet.

Subpart D

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)

¹ Within the range of 6.0 to 9.0.

(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.

40 C.F.R. §420.42

47 FR 23284, May 27, 1982, as amended at 67 FR 64267, Oct. 17, 2002