Wis. Admin. Code Department of Natural Resources § NR 257.63 - Effluent limitations representing the degree of effluent reduction attainable by the application of best available technology economically achievable

Current through March 28, 2022

Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BAT:

Table 167

Core operation BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum drawn with emulsions or soaps

Chromium

0.205

0.084

Cyanide

0.135

0.056

Zinc

0.681

0.285

Aluminum

3.00

1.49

Table 168

Continuous rod casting spent lubricant BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.0009

0.0004

Cyanide

0.0006

0.0003

Zinc

0.0029

0.0012

Aluminum

0.013

0.0063

Table 169

Continuous rod casting contact cooling water BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.086

0.035

Cyanide

0.056

0.024

Zinc

0.283

0.118

Aluminum

1.25

0.62

Table 170

Solution heat treatment contact cooling water BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.897

0.37

Cyanide

0.591

0.25

Zinc

2.98

1.24

Aluminum

13.10

6.52

Table 171

Cleaning or etching bath BAT

Pollutant or pollutant property

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

0.11

Aluminum

1.15

0.57

Table 172

Cleaning or etching rinse and hot water seal BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.612

0.251

Cyanide

0.404

0.167

Zinc

2.03

0.849

Aluminum

8.95

4.45

Table 173

Cleaning or etching scrubber liquor BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.85

0.348

Cyanide

0.561

0.232

Zinc

2.82

1.18

Aluminum

12.43

6.19

Notes

Wis. Admin. Code Department of Natural Resources § NR 257.63
Cr. Register, November, 1989, No. 407, eff. 12-1-89.

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