40 CFR 467.46: Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in aluminum forming process wastewater introduced into a POTW shall not exceed the values set forth below:

Subpart D

Core

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum forged

Chromium 0.019 0.008

Cyanide 0.010 0.004

Zinc 0.051 0.021

TTO 0.035

Oil and grease (alternate monitoring parameter) 0.50 0.50

Subpart D

Forging Scrubber Liquor

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum forged

Chromium 0.035 0.014

Cyanide 0.019 0.008

Zinc 0.096 0.040

TTO 0.065

Oil and grease (alternate monitoring parameter) 0.95 0.95

Subpart D

Solution Heat Treatment Contact Cooling Water

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum quenched

Chromium 0.76 0.31

Cyanide 0.41 0.16

Zinc 2.08 0.86

TTO 1.41

Oil and grease (alternate monitoring parameter) 20.37 20.37

Subpart D

Cleaning or Etching Bath

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched

Chromium 0.067 0.027

Cyanide 0.036 0.015

Zinc 0.183 0.075

TTO 0.124

Oil and grease (alternate monitoring parameter) 1.79 1.79

Subpart D

Cleaning or Etching Rinse

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched

Chromium 0.52 0.21

Cyanide 0.28 0.11

Zinc 1.42 0.59

TTO 0.96

Oil and grease (alternate monitoring parameter) 13.91 13.91

Subpart D

Cleaning or Etching Scrubber Liquor

Pollutant or pollutant property PSNS

Maximum for any 1 day Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched

Chromium 0.72 0.29

Cyanide 0.39 0.16

Zinc 1.97 0.812

TTO 1.34

Oil and grease (alternate monitoring parameter) 19.33 19.33