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

§ 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]