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

Current through June 24, 2024
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.