Wis. Admin. Code Department of Natural Resources § NR 257.45 - Pretreatment standards for existing sources

Current through March 28, 2022

Except as provided in ss. NR 211.13 and 211.14, any existing source subject to this subchapter which introduces pollutants into a POTW shall comply with ch. NR 211 and achieve the following pretreatment standards for existing sources:

Table 113

Core operation PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.022

0.009

Cyanide

0.015

0.006

Zinc

0.073

0.031

TTO

0.035

Oil and grease (alternate monitoring parameter)

2.6

1.3

Table 114

Forging scrubber liquor PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

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

Chromium

0.042

0.017

Cyanide

0.028

0.011

Zinc

0.140

0.058

TTO

0.065

Oil and grease (alternate monitoring parameter)

4.9

2.5

Table 115

Solution heat treatment contact cooling water PSES

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

TTO

1.41

Oil and grease (alternate monitoring parameter)

110.0

53.0

Table 116

Cleaning or etching bath PSES

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

0.26

0.11

TTO

0.123

Oil and grease (alternate monitoring parameter)

9.30

4.70

Table 117

Cleaning or etching rinse and hot water seal PSES

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

1.7

0.7

Cyanide

1.2

0.5

Zinc

5.7

2.4

TTO

2.7

Oil and grease (alternate monitoring parameter)

200.0

100.0

Table 118

Cleaning or etching scrubber liquor PSES

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

0.35

Cyanide

0.561

0.23

Zinc

2.82

1.18

TTO

1.34

Oil and grease (alternate monitoring parameter)

100.0

50.0

Notes

Wis. Admin. Code Department of Natural Resources § NR 257.45
Cr. Register, November, 1989, No. 407, eff. 12-1-89.

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