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 I - Aluminum Casting Subcategory
Section NR 256.15 - 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 8
ALUMINUM CASTING SUBCA TEGORY
CASTING CLEANING 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) |
0.0771 |
0.0421 |
|
Lead (T) |
0.0791 |
0.039 |
|
Zinc (T) |
0.114 |
0.0431 |
TABLE 9
ALUMINUM CASTING SUBCATEGORY
CASTING QUENCH 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) |
0.0093 |
0.0051 |
|
Lead (T) |
0.0096 |
0.0047 |
|
Zinc (T) |
0.0138 |
0.0052 |
|
TTO (1) |
0.029 |
0.0095 |
|
Oil and grease (2) |
0.363 |
0.121 |
(1) TTO is comprised of the following toxic or ganic pollutants:
benzene
2,4,6-trichlorophenol
para-chloro meta-cresol
chloroform (trichloromethane)
2,4-dimethylphenol
fluoranthene
methylene chloride (dichloromethane)
phenol
bis(2-ethylhexyl)phthalate
butyl benzyl phthalate
pyrene
tetrachloroethylene
trichloroethylene
(2) Use as alternative to monitoring for TTO.
TABLE 10
ALUMINUM 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) |
0.0068 |
0.0034 |
|
Zinc (T) |
0.0098 |
0.0037 |
|
Total phenols |
0.0074 |
0.0026 |
|
TTO (1) |
0.0308 |
0.01 |
|
Oil and grease (2) |
0.259 |
0.0864 |
(1) TTO is comprised of the following toxic or ganic pollutants:
acenaphthene
benzene
chlorobenzene
1,1,1-trichloroethane
2,4,6-trichlorophenol
para-chloro meta-cresol
chloroform (trichloromethane)
2,4-dimethylphenol
fluoranthene
methylene chloride (dichloromethane)
naphthalene
phenol
bis(2-ethylhexyl)phthalate
butyl benzyl phthalate
di-n-butyl phthalate
diethyl phthalate
benzo (a)anthracene (1,2-benzanthracene)
benzo (a)pyrene (3,4-benzopyrene)
chrysene
anthracene
fluorene
phenanthrene
pyrene
tetrachloroethylene
toluene
(2) Use as alternative to monitoring for TT O.
TABLE 11
ALUMINUM 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) |
0.231 |
0.126 |
|
Lead (T) |
0.237 |
0.117 |
|
Zinc (T) |
0.343 |
0.129 |
|
Total phenols |
0.258 |
0.09 |
|
TTO (1) |
0.613 |
0.2 |
|
Oil and grease (2) |
9.01 |
3.0 |
(1) TTO is comprised of the following toxic or ganic pollutants:
acenaphthene
2,4,6-trichlorophenol
chloroform (trichloromethane)
2,4-dimethylphenol
fluoranthene
methylene chloride (dichloromethane)
phenol
bis (2-ethylhexyl) phthalate
di-n-butyl phthalate
diethyl phthalate
benzo (a)pyrene (3,4-benzopyrene)
pyrene
(2) Use as alternative to monitoring for TTO.
TABLE 12
ALUMINUM CASTING SUBCATEGORY
INVESTMENT CASTING
|
PSES |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
kg/1000 kkg (pounds per million pounds) of metal poured |
|
|
Copper (T) |
8.48 |
4.63 |
|
Lead (T) |
8.7 |
4.3 |
|
Zinc (T) |
12.6 |
4.74 |
|
TTO (1) |
18.1 |
5.91 |
|
Oil and grease (2) |
330 |
110 |
(1) TTO is comprised of the following toxic or ganic pollutants:
1,1,1-trichloroethane
chloroform (trichloromethane)
methylene chloride (dichloromethane)
bis (2-ethylhexyl) phthalate
pyrene
tetrachloroethylene
trichloroethylene
(2) Use as alternative to monitoring for TTO.
TABLE 13
ALUMINUM 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) |
3.01 |
1.64 |
|
Lead (T) |
3.09 |
1.52 |
|
Zinc (T) |
4.45 |
1.68 |
|
Total phenols |
3.36 |
1.17 |
|
TTO (1) |
7.97 |
2.6 |
|
Oil and grease (2) |
117 |
39.1 |
(1) TTO is comprised of the toxic organic pollutants listed in Table 11.
(2) Use as alternative to monitoring for TTO.
TABLE 14
ALUMINUM CASTING SUBCATEGORY
MOLD COOLING OPERATIONS
|
PSES |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
kg/1,000kkg (pounds per million pounds) of metal poured |
|
|
Copper (T) |
0.297 |
0.162 |
|
Lead (T) |
0.305 |
0.151 |
|
Zinc (T) |
0.44 |
0.166 |
|
TTO (1) |
0.935 |
0.304 |
|
Oil and grease (2) |
11.6 |
3.86 |
(1) TTO is comprised of the toxic or ganic pollutants listed in Table 9.
(2) Use as alternative to monitoring for TTO.
