Wis. Admin. Code Department of Natural Resources NR 256.34

Current through October 28, 2024

Section NR 256.34 - New source performance standards

(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

Wis. Admin. Code Department of Natural Resources NR 256.34

Cr. Register, June, 1989, No. 402, eff. 7-17-89