Wis. Admin. Code NR § 256.25

Current through May 28, 2024
Section NR 256.25 - Pretreatment standards for existing sources

Except as provided in ss. NR 211.13 and 211.14, any existing source subject to this subchapter which introduces pollutants into a publicly owned treatment works shall comply with ch. NR 211 and achieve the following pretreatment standards for existing sources. Grinding scrubber operations may not discharge process wastewater pollutants to a POTW.

TABLE 33

COPPER CASTING SUBCATEGORY

CASTING QUENCH OPERATIONS

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/1,000 kkg (pounds per million pounds) of metal poured

Copper (T)

0.0307

0.0168

Lead (T)

0.0211

0.0104

Zinc (T)

0.0303

0.0116

TTO (1)

0.0335

0.0109

Oil and grease (2)

1.2

0.399

(1) TTO is comprised of the following toxic or ganic pollutants:

chloroform (trichloromethane)

pentachlorophenol

bis (2-ethylhexyl)phthalate

dimethyl phthalate

(2) Use as alternative to monitoring for TTO.

TABLE 34

COPPER CASTING SUBCATEGORY

DIRECT CHILL CASTING OPERA TIONS

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/1,000 kkg (pounds per million pounds) of metal poured

Copper (T)

0.928

0.506

Lead (T)

0.639

0.314

Zinc (T)

0.916

0.35

T ABLE 35

COPPER CASTING SUBCATEGORY

DUST COLLECTION SCRUBBER OPERATIONS

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed

Copper (T)

0.552

0.301

Lead (T)

0.38

0.187

Zinc (T)

0.545

0.208

Total phenols

0.617

0.215

TTO (1)

1.65

0.54

Oil and grease (2)

21.5

7.18

(1) TTO is comprised of the following toxic or ganic pollutants:

acenaphthene

para-chloro meta-cresol

chloroform (trichloromethane)

2,4-dimethylphenol

naphthalene

4-nitrophenol

pentachlorophenol

phenol

bis (2-ethylehexyl) phthalate

butyl benzyl phthalate

di-n-butyl phthalate

diethyl phthalate

dimethyl phthalate

benzo(a)anthracene (1,2-bezanthracene)

3,4-benzofluoranthene

benzo(k) fluoranthene

chrysene

acenaphthylene

anthracene

phenanthrene

pyrene

(2) Use as alternative to monitoring for TTO.

TABLE 36

COPPER CASTING SUBCATEGORY

SUBCATEGOR Y INVESTMENT CASTING

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/1,000 kkg (pounds per million pounds) of metal poured

Copper (T)

8.48

4.63

Lead (T)

5.84

2.86

Zinc (T)

8.37

3.19

TTO (1)

25.4

8.29

Oil and grease (2)

330

110

(1) TTO is comprised of the toxic or ganic pollutants listed in Table 35.

(2) Use as alternative to monitoring for TTO.

TABLE 37

COPPER CASTING SUBCA TEGORY

MELTING FURNACE SCRUBBER OPERATIONS

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed

Copper (T)

1.81

0.988

Lead (T)

1.25

0.612

Zinc (T)

1.79

0.673

Total phenols

2.02

0.706

TTO (1)

5.41

1.77

Oil and grease (2)

70.6

23.5

(1) TTO is comprised of the toxic organic pollutants listed in Table 35.

(2) Use as alternative to monitoring for TTO.

TABLE 38

COPPER CASTING SUBCATEGORY

MOLD COOLING OPERATIONS

PSES

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

kg/1,000 kkg (pounds per million pounds) of metal poured

Copper (T)

0.392

0.214

Lead (T)

0.27

0.132

Zinc (T)

0.387

0.148

TTO (1)

0.428

0.14

Oil and grease(2)

15.3

5.09

(1) TTO is of the following toxic or ganic pollutants:

chloroform (trichloromethane)

pentachlorophenol

bis(2-ethylhexyl) phthalate

dimethyl phthalate

(2) Use as alternative to monitoring for TT O

Wis. Admin. Code Department of Natural Resources § NR 256.25

Cr. Register, June, 1989, No. 402, eff. 7-1-89.