40 C.F.R. § 467.35

Current through October 31, 2024

Section 467.35 - Pretreatment standards for existing sources

(a) 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.

(b) There shall be no discharge allowance for wastewater pollutants from the degassing operation.

(c) The mass of wastewater pollutants from the core and ancillary operations except those identified in paragraph (b), introduced into a POTW shall not exceed the following values:

Subpart C

Core

Pollutant or pollutant property	PSES
	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (lb/million off-lbs) of extruded
Chromium	0.15	0.061
Cyanide	0.098	0.041
Zinc	0.49	0.21
TTO	0.23
Oil and grease (alternate monitoring parameter)	18	8.8

Subpart C

Extrusion Press Leakage

Pollutant or pollutant property	PSES
	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (lb/million off-lbs) of extruded
Chromium	0.65	0.27
Cyanide	0.43	0.18
Zinc	2.16	0.90
TTO	1.02
Oil and grease (alternate monitoring parameter)	77	39

Subpart C

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
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 C

Press 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 C

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 C

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	0.26	0.109
TTO	0.124
Oil and grease (alternate monitoring parameter)	9.3	4.7

Subpart C

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	1.7	0.7
Cyanide	1.2	0.5
Zinc	5.7	2.4
TTO	2.7
Oil & Grease (alternate monitoring parameter)	200	100

Subpart C

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	2.82	1.18
TTO	1.34
Oil and grease (alternate monitoring parameter)	100	50

40 C.F.R. §467.35

48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11633, 11634, Mar. 27, 1984, as amended at 53 FR 52369, Dec. 27, 1988