Wis. Admin. Code Department of Natural Resources § NR 257.13 - Effluent limitations representing the degree of effluent reduction attainable by the application of the 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 8

Core with an annealing furnace scrubber BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils

Chromium

0.036

0.015

Cyanide

0.024

0.0098

Zinc

0.119

0.050

Aluminum

0.525

0.257

Table 9

Core without an annealing furnace scrubber BAT

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils

Chromium

0.025

0.010

Cyanide

0.016

0.0067

Zinc

0.081

0.034

Aluminum

0.356

0.174

Table 10

Continuous sheet 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 sheet cast

Chromium

0.00086

0.00035

Cyanide

0.00057

0.00024

Zinc

0.00287

0.0012

Aluminum

0.0127

0.0062

Table 11

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

0.367

Cyanide

0.591

0.245

Zinc

2.974

1.243

Aluminum

13.10

6.518

Table 12

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

0.109

Aluminum

1.151

0.573

Table 13

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

2.031

0.849

Aluminum

8.944

4.450

Table 14

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

0.851

0.348

Cyanide

0.561

0.232

Zinc

2.822

1.179

Aluminum

12.43

6.186

Notes

Wis. Admin. Code Department of Natural Resources § NR 257.13
Cr. Register, November, 1989, No. 407, eff. 12-1-89.

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