Wis. Admin. Code Department of Natural Resources NR 274.275

Current through October 28, 2024
Section NR 274.275 - Pretreatment standards for existing sources

Except as provided in s. NR 211.13, any existing source subject to this subchapter which introduces pollutants into a POTW shall comply with ch. NR 211 and achieve the following PSES:

Table 27-6

Primary Rare Earth Metals Dryer Vent Water Quench and Scrubber

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides

Hexachlorobenzene

0.042

0.042

Chromium

1.544

0.626

Lead

1.168

0.542

Nickel

2.295

1.544

Table 27-7

Primary Rare Earth Metals Dryer Vent Caustic Wet Air Pollution Control

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides

Hexachlorobenzene

0.007

0.007

Chromium

0.272

0.110

Lead

0.206

0.095

Nickel

0.404

0.272

Table 27-8

Primary Rare Earth Metals Electrolytic Cell Water Quench and Scrubber

PSES

Maximum for any 1 day m

Maximum for onthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of total mischmetal produced

Hexachlorobenzene

0.094

0.094

Chromium

3.474

1.409

Lead

2.629

1.221

Nickel

5.165

3.474

Table 27-9

Primary Rare Earth Metals Electrolytic Cell Caustic Wet Air Pollution Control

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of total mischmetal produced

Hexachlorobenzene

0.000

0.000

Chromium

0.000

0.000

Lead

0.000

0.000

Nickel

0.000

0.000

Table 27-10

Primary Rare Earth Metals Sodium Hypochlorite Filter Backwash

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of total mischmetal produced

Hexachlorobenzene

0.004

0.004

Chromium

0.134

0.054

Lead

0.101

0.047

Nickel

0.199

0.134

Wis. Admin. Code Department of Natural Resources NR 274.275

Cr. Register, March, 1991, No. 423, eff. 4-1-91.