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 III - Ferrous Casting Subcategory › Section NR 256.34 - New source performance standards

Current through June 24, 2024
(1) Any new source,
				  including noncontinuous direct dischargers, which casts primarily malleable
				  iron where metal poured is equal to or less than 3,557 tons per year or casts
				  primarily steel shall achieve the effluent standards contained in s.
				  NR
				  256.32. Grinding scrubber operations may not discharge
				  process wastewater pollutants to navigable waters.
(2) Any new source, including noncontinuous
				  direct dischargers, which casts primarily malleable iron where metal poured is
				  greater than 3,557 tons per year or casts primarily ductile or gray iron shall
				  achieve the following effluent standards. Grinding scrubber operations may not
				  discharge process wastewater pollutants to waters of the state.
Table 55
FERROUS CASTING SUBCATEGORY CASTING CLEANING
					 OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of metal
								  poured
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.0129
0.0071
0.29
0.16
0.0029
Lead (T)
0.0237
0.0116
0.53
0.26
0.0067
Zinc (T)
0.0437
0.0165
0.98
0.37
0.0116
Oil & grease
1.34
0.446
30
10
0.223
TSS
0.67
0.536
15
12
0.116
pH
(3)
(3)
(3)
(3)
(3)
(1)These concentrations shall be multiplied by the ratio of
					 (5.33/x) where x is the actual normalized process wastewater discharge flow (in
					 gallons per 1,000 pounds of metal poured) for a specific plant.
(2) kg/1,000 kkg (pounds per million pounds) of metal
					 poured.
(3) Within the range of 7.0 to 10.0 to all times.
Table 56
FERROUS CASTING SUBCATEGORY CASTING QUENCH
					 OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of metal
								  poured
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.0138
0.0076
0.29
0.16
0.0031
Lead (T)
0.0252
0.0124
0.53
0.26
0.0071
Zinc (T)
0.0466
0.0176
0.98
0.37
0.0124
Oil & grease
1.43
0.476
30
10
0.238
TSS
0.713
0.571
15
12
0.124
pH
(3)
(3)
(3)
(3)
(3)
(1)These concentrations shall be multiplied by the ratio of
					 (5.7/x) where x is the actual normalized process wastewater discharge flow (in
					 gallons per 1,000 pounds of metal poured) for a specific plant
(2)kg/1,000 kkg (pounds per million pounds) of metal
					 poured.
(3)Within the range of 7.0 to 10.0 to all times
TABLE 57
FERROUS CASTING SUBCATEGORY DUST COLLECTION SCRUBBER
					 OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/62.3 million Sm3
								  (pounds per billion SCF) of air scrubbed
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.218
0.12
0.29
0.16
0.0488
Lead (T)
0.398
0.195
0.53
0.26
0.113
Zinc (T)
0.736
0.278
0.98
0.37
0.195
Total phenols
0.646
0.225
0.86
0.3
0.15
Oil and grease
22.5
7.51
30
10
3.76
TSS
11.3
9.01
15
12
1.95
pH
(3)
(3)
(3)
(3)
(3)
(1) These concentrations shall be multiplied by the ratio
					 of (0.09/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 SCF of air scrubbed) for a specific plant.
(2) kg/62.3 million Sm3 (pounds per billion SCF) of air
					 scrubbed.
(3) Within the range of 7.0 to 10.0 at all times.
Table 58
FERROUS CASTING SUBCATEGORY INVESTMENT CASTING
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of metal
								  poured
mg/l(1)
mg/l(1)
(2)
Copper (T)
3.19
1.76
0.29
0.16
0.716
Lead (T)
5.84
2.86
0.53
0.26
1.65
Zinc (T)
10.8
4.07
0.98
0.37
2.86
Oil & grease
330
110
30
10
55.1
TSS
165
132
15
12
28.6
pH
(3)
(3)
(3)
(3)
(3)
(1) These concentrations shall be multiplied by the ratio
					 of (1,320/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 pounds of metal poured) for a specific plant.
(2) kg/1,000 kkg (pounds per million pounds) of metal
					 poured.
(3) Within the range of 7.0 to 10.0 to all times.
Table 59
FERROUS CASTING SUBCATEGORY MELTING FURNACE SCRUBBER
					 OPERATIONS(1)
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for 1 day
any Maximum for
monthly average
Annual average
Pollutant or pollutant property
kg/62.3 million Sm3
								  (pounds per billion SCF) of air scrubbed
mg/l(1)
mg/l(1)
(2)
Copper (T)
1.02
0.561
0.29
0.16
0.228
Lead (T)
1.86
0.911
0.53
0.26
0.526
Zinc (T)
3.44
1.30
0.98
0.37
0.911
Total phenols
3.01
1.05
0.86
0.3
0.701
Oil and grease
105
35
30
10
17.5
TSS
52.6
42.1
15
12
9.11
pH
(4)
(4)
(4)
(4)
(4)
(1) In a multiple ferrous melting furnace scrubber
					 configuration, each discrete wet scrubbing device with an associated wastewater
					 discharge shall be given the mass allowance specified. The allowance will be
					 identical for each device and based on the airflow of the exhaust gas stream
					 that passes through the multiple scrubber configuration.
(2) These concentrations shall be multiplied by the ratio
					 of (0.42/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 SCF of air scrubbed) for a specific plant.
(3) kg/62.3 million Sm3 (pounds per billion SCF) of air
					 scrubbed.
(4) Within the range of 7.0 to 10.0 at all times.
Table 60
FERROUS CASTING SUBCATEGORY MOLD COOLING OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of metal
								  poured
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.0428
0.0236
0.29
0.16
0.0096
Lead (T)
0.0783
0.0384
0.53
0.26
0.0222
Zinc (T)
0.0145
0.0546
0.98
0.37
0.0384
Oil & grease
4.43
1.48
30
10
0.738
TSS
2.22
1.77
15
12
0.384
pH
(3)
(3)
(3)
(3)
(3)
(1) These concentrations shall be multiplied by the ratio
					 of (17.7/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 pounds of metal poured) for a specific plant.
(2) kg/1,000 kkg (pounds per million pounds) of metal
					 poured.
(3) Within the range of 7.0 to 10.0 to all times.
Table 61
FERROUS CASTING SUBCATEGORY SLAG QUENCH OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for 1 day
any Maximum for
monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of metal
								  poured
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.0527
0.0291
0.29
0.16
0.0118
Lead (T)
0.0964
0.0473
0.53
0.26
0.0273
Zinc (T)
0.178
0.0673
0.98
0.37
0.0473
Oil & grease
5.46
1.82
30
10
0.909
TSS
2.73
2.18
15
12
0.473
pH
(3)
(3)
(3)
(3)
(3)
(1) These concentrations shall be multiplied by the ratio
					 of (21.8/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 pounds of metal poured) for a specific plant.
(2) kg/1,000 kkg (pounds per million pounds) of metal
					 poured.
(3) Within the range of 7.0 to 10.0 to all times.
Table 62
FERROUS CASTING SUBCATEGORY WET SAND RECLAMATION
					 OPERATIONS
NSPS
Noncontinuous Direct Dischargers
Maximum for any 1 day
Maximum for monthly average
Maximum for any 1 day
Maximum for monthly average
Annual average
Pollutant or pollutant property
kg/1,000 kkg (pounds per million pounds) of sand
								  reclaimed
mg/l(1)
mg/l(1)
(2)
Copper (T)
0.217
0.12
0.29
0.16
0.0485
Lead (T)
0.396
0.194
0.53
0.26
0.112
Zinc (T)
0.732
0.276
0.98
0.37
0.194
Total phenols
0.642
0.224
0.86
0.3
0.149
Oil & grease
22.4
7.47
30
10
3.73
TSS
11.2
8.96
15
12
1.94
pH
(3)
(3)
(3)
(3)
(3)
(1) These concentrations shall be multiplied by the ratio
					 of (89.5/x) where x is the actual normalized process wastewater discharge flow
					 (in gallons per 1,000 pounds of sand reclaimed) for a specific plant.
(2) kg/1,000 kkg (pounds per million pounds) of sand
					 reclaimed.
(3) Within the range of 7.0 to 10.0 to all times