40 C.F.R. § 467.33

Current through September 30, 2024

Section 467.33 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

(a) Except as provided in 40 CFR 125.30 through 125.32 , any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

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

(c) The discharge of wastewater pollutants from the core and ancillary operation except those in (b) of this section, shall not exceed the values set forth below:

Subpart C

Core

Pollutant or pollutant property	BAT effluent limitations
	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (lb/million off-lbs) of aluminum extruded
Chromium	0.15	0.061
Cyanide	0.098	0.041
Zinc	0.49	0.21
Aluminum	2.19	1.09

Subpart C

Extrusion Press Leakage

Pollutant or pollutant property	BAT effluent limitations
	Maximum for any 1 day	Maximum for monthly average
	mg/off-kg (lb/million off-lbs) of aluminum extruded
Chromium	0.65	0.27
Cyanide	0.43	0.18
Zinc	2.16	0.90
Aluminum	9.51	4.73

Subpart C

Direct Chill Casting Contact Cooling Water

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	8.55	4.26

Subpart C

Press Heat Treatment Contact Cooling Water

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	13.10	6.52

Subpart C

Solution Heat Treatment Contact Cooling Water

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	13.10	6.52

Subpart C

Cleaning or Etching Bath

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	1.15	0.58

Subpart C

Cleaning or Etching Rinse

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	25	13

Subpart C

Cleaning or Etching Scrubber Liquor

Pollutant or pollutant property	BAT effluent limitations
	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
Aluminum	12.43	6.19

40 C.F.R. §467.33

48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988