420.35—Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.

(a) Iron blast furnace.

Subpart C

Pollutant or pollutant property	Pretreatment standards for existing sources
Pollutant or pollutant property	Maximum for any 1 day	Average of daily values for 30 consecutive days
	Kg/kkg (pounds per 1,000 lb) of products
Ammonia-N 1	0.00876	0.00292
Cyanide	0.00175	0.000876
Phenols (4AAP)	0.0000584	0.0000292
Lead	0.000263	0.0000876
Zinc	0.000394	0.000131
1 The pretreatment standards for ammonia are not applicable to sources that discharge to a POTW with nitrification capability (defined at 420.02(s)).

(b) [Reserved]

Subpart C

Pollutant or pollutant property	Pretreatment standards for existing sources
Pollutant or pollutant property	Maximum for any 1 day	Average of daily values for 30 consecutive days
	Kg/kkg (pounds per 1,000 lb) of product
Ammonia-N	0.0350	0.0175
Cyanide	0.00175	0.000876
Phenols (4AAP)	0.000175	0.0000584
Lead	0.000263	0.0000876
Zinc	0.000394	0.000131

[47 FR 23284, May 27, 1982, as amended at 49 FR 21030, May 17, 1984; 67 FR 64266, Oct. 17, 2002]