Wis. Admin. Code Department of Natural Resources NR 256.45

Current through October 28, 2024
Section NR 256.45 - Pretreatment standards for existing sources

Except as provided in ss. NR 211.13 and anyexisting 211.14 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 for existing sources:

Table 83

ZINC 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)

0.0344

0.0187

Lead (T)

0.0237

0.0116

Zinc (T)

0.0339

0.0129

TTO(1)

0.093

0.0304

Oil and grease(2)

1.34

0.446

(2) TTO is comprised of the following toxic organic pollutants:

2,4,6-trichlorophenol

para-chloro meta-cresol

2,4-dichlorophenol

2,4-dimethylphenol

fluoranthene

methylene chloride (dichloromethane)

phenol

bis(2-ethylhexyl) phthalate

di-n-butyl phthalate

diethyl phthalate

tetrachloroethylene

(2) Use as alternative to monitoring for TTO.

Table 84

ZINC CASTING SUBCATEGORY DIE CASTING 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)

0.0066

0.0036

Lead (T)

0.0046

0.0022

Zinc (T)

0.0066

0.0025

Total phenols

0.0074

0.0026

TTO(1)

0.0196

0.0064

Oil and grease(2)

0.259

0.0864

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

acenaphthene

2,4,6-trichlorophenol

para-chloro meta-cresol

2-chlorophenol

2,4-dimethylphenol

methylene chloride (dichloromethane)

naphthalene

phenol

bis(2-ethylhexyl) phthalate

di-n-butyl phthalate

diethyl phthalate

tetrachloroethylene

toluene

trichloroethylene

(2)Use as alternative to monitoring for TTO.

Table 85

ZINC CASTING SUBCATEGORY 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)

1.56

0.852

Lead (T)

1.07

0.527

Zinc (T)

1.54

0.588

Total phenols

1.74

0.608

TTO(1)

3.95

1.29

Oil and grease(2)

60.8

20.3

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

2,4-dichlorophenol

2,4-dimethylphenol

fluoranthene

methylene chloride (dichloromethane)

naphthalene

phenol

bis(2-ethylhexyl) phthalate

di-n-butyl phthalate

tetrachloroethylene

toluene

trichloroethylene

(2)Use as alternative to monitoring for TTO

Table 86

ZINC 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)

0.304

0.166

Lead (T)

0.209

0.103

Zinc (T)

0.3

0.114

TTO(1)

0.821

0.268

Oil and grease(2)

11.8

3.94.

(1) TTO is comprised of the toxic organic pollutants listed in Table 83.

(2) Use as alternative to monitoring for TTO

Wis. Admin. Code Department of Natural Resources NR 256.45

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