40 CFR 420.25 - Pretreatment standards for existing sources (PSES).

Regulations last checked for updates: Nov 24, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024

View all text of Subpart B [§ 420.20 - § 420.29]

§ 420.25 - Pretreatment standards for existing sources (PSES).

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

(a) Sintering operations with wet air pollution control system. The following table presents PSES for sintering operations with wet air pollution control systems:

Subpart B—Pretreatment Standards for Existing Sources (PSES)

Regulated parameter	Maximum daily ¹	Maximum monthly avg. ¹
Ammonia-N ^{2 3}	0.0150	0.00501
Cyanide ²	0.00300	0.00150
Phenols (4AAP) ²	0.000100	0.0000501
Lead	0.000451	0.000150
Zinc	0.000676	0.000225
2,3,7,8-TCDF	<ML

¹ Pounds per thousand lb of product.

² The pretreatment standards for these parameters apply only when sintering wastewater is co-treated with ironmaking wastewater.

³ The pretreatment standards for ammonia are not applicable to sources that discharge to a POTW with nitrification capability (defined at § 420.02(s)).

(b) Sintering operations with dry air pollution control system. There shall be no discharge of process wastewater pollutants to POTWs.

[67 FR 64265, Oct. 17, 2002]

authority: 33 U.S.C. 1311,1314,1316,1317,1318,1342,and

source: 47 FR 23284, May 27, 1982, unless otherwise noted.

cite as: 40 CFR 420.25