1. Regulations
  2. title 40
  3. chapter I-i31
  4. part 464
  5. subpart B
  6. § 464.25

View all text of Subpart B [§ 464.20 - § 464.27]

§ 464.25 - Pretreatment standards for existing sources.

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) Casting Quench Operations.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1000 kkg (pounds per million pounds) of metal poured Copper (T)0.03070.0168 Lead (T)0.02110.0104 Zinc (T)0.03030.0116 TTO0.03350.0109 Oil and grease (for alternate monitoring)1.20.399

(b) Direct Chill Casting Operations.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds) of metal poured Copper (T)0.9280.506 Lead (T)0.6390.314 Zinc (T)0.9160.35

(c) Dust Collection Scrubber Operations.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed Copper (T)0.5520.301 Lead (T)0.380.187 Zinc (T)0.5450.208 Total phenols0.6170.215 TTO1.650.54 Oil and grease (for alternate monitoring)21.57.18

(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.

(e) Investment Casting.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds) of metal poured Copper (T)8.484.63 Lead (T)5.842.86 Zinc (T)8.373.19 TTO25.48.29 Oil and grease for alternate monitoring)330110

(f) Melting Furnace Scrubber Operations.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed Copper (T)1.810.988 Lead (T)1.250.612 Zinc (T)1.790.673 Total phenols2.020.706 TTO5.411.77 Oil and grease (for alternate monitoring)70.623.5

(g) Mold Cooling Operations.

PSES

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds) of metal poured Copper (T)0.3920.214 Lead (T)0.270.132 Zinc (T)0.3870.148 TTO0.4280.14 Oil and grease (for alternate monitoring)15.35.09

AUTHORITY: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307, 308, and 501 of the Clean Water Act (Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e) and (g), 1316 (b) and (c), 1317 (b) and (c), 1318, and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.

SOURCE: 50 FR 45247, Oct. 30, 1985, unless otherwise noted.

CITE AS: 40 CFR 464.25