40 CFR 424.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

View all text of Subpart B [§ 424.20 - § 424.27]

§ 424.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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

Effluent characteristic	Effluent limitations		Maximum for any 1 day	Average of daily values for 30 consecutive days shall not exceed—		Metric units (kg/Mwh)		TSS	0.419	0.209	Chromium total	.008	.004	Chromium VI	.0008	.0004	Manganese total	.084	.042	Cyanide total	.004	.002	Phenols	.006	.004	pH	( 1)	( 1)		English units (lb/Mwh)		TSS	.922	.461	Chromium total	.018	.009	Chromium VI	.0018	.0009	Manganese total	.184	.092	Cyanide total	.009	.005	Phenols	.013	.009	pH	( 1)	( 1)

1 Within the range 6.0 to 9.0.

Provided, however, That for nonelectric furnace smelting processes, the units of effluent limitations set forth in this section shall be read as “kg/kkg of product” rather than “kg/Mwh,” and the limitations (except for pH) shall be 3.3 times those listed in the table in this section (or, for English units, “lb/ton of product” rather than “lb/Mwh,” and the limitations (except for pH) shall be three times those listed in the table). [39 FR 6809, Feb. 22, 1974, as amended at 39 FR 17841, May 21, 1974; 60 FR 33957, June 29, 1995]