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 II - Copper Casting Subcategory › Section NR 256.25 - 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 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