Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 256 - Metal molding and casting
Subchapter IV - Zinc Casting Subcategory
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
