40 CFR 467.25 - Pretreatment standards for existing sources.

View all text of Subpart B [§ 467.20 - § 467.27]

§ 467.25 - 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. The mass of wastewater pollutants in aluminum forming process wastewater introduced into a POTW shall not exceed the following values:

Subpart B Core

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum rolled with emulsions		Chromium	0.057	0.024	Cyanide	0.038	0.016	Zinc	0.190	0.079	TTO	0.090		Oil and grease (alternate monitoring parameter)	6.8	3.4

Subpart B Direct Chill Casting Contact Cooling Water

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cast by semi-continuous methods		Chromium	0.59	0.24	Cyanide	0.39	0.16	Zinc	1.94	0.81	TTO	0.92		Oil and grease (alternate monitoring parameter)	69	35

Subpart B Solution Heat Treatment Contact Cooling Water

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum quenched		Chromium	0.90	0.37	Cyanide	0.59	0.25	Zinc	2.98	1.25	TTO	1.41		Oil and grease (alternate monitoring parameter)	110	53

Subpart B Cleaning or Etching Bath

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.079	0.032	Cyanide	0.052	0.022	Zinc	0.262	0.109	TTO	0.124		Oil and grease (alternate monitoring parameter)	9.3	4.7

Subpart B Cleaning or Etching Rinse

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.61	0.25	Cyanide	0.41	0.17	Zinc	2.03	0.85	TTO	0.96		Oil and grease (alternate monitoring parameter)	73	36

Subpart B Cleaning or Etching Scrubber Liquor

Pollutant or pollutant property	PSES		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.85	0.35	Cyanide	0.56	0.23	Zinc	2.83	1.18	TTO	1.34		Oil and grease (alternate monitoring parameter)	100	50

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, 11633, Mar. 27, 1984, as amended at 53 FR 52369, 52370, Dec. 27, 1988]

AUTHORITY: Secs. 301, 304(b), (c), (e), and (g), 306(b) and (c), 307(b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (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; 101 Stat. 7, Pub. L. 100-4.

SOURCE: 48 FR 49149, Oct. 24, 1983, unless otherwise noted.

CITE AS: 40 CFR 467.25