limitations for copper, lead, zinc, and total phenols. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers.

(a) Casting Cleaning Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

Annuai average

1

kg/1,000 kkg (pounds per mil

lion pounds) of metal poured

(mg1)2

Zinc (T)
Total phenols
Oil and grease

(mg/l) ? Cooper (T)

0.29

0.16 0.0485 Lead (T)

0.79

0.39

0.164 1.47

0.56 0.299 0.86

0.3

0.149 30

10

3.73 TSS

38

15

7.47 pH

(3)

(3) (3) 1 kg/1,000 kkg (pounds per million pounds) of sand reclaimed

2 These concentrations must be multiplied by the ratio of (89.5/x) where x is the actual normalized process wastewater flow (in gallons per 1.000 pounds of sand reclaimed) for a specific plant

3 Within the range of 7.0 to 10.0 at all times.

(50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986)

(mg) ? (mg) 2 Copper (T)

0.29

0.16 0.0029 Lead (T)

0.53

0.26 0.0067 Zinc (T)

0.98 0.37 0.0116 1kg/1,000 kkg (pounds per million pounds) of metal poured.

2 These concentrations must be multiplied by the ratio of (5.33/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.

BAT EFFLUENT LIMITATIONS

$ 464.33 Effluent limitations guidelines

representing the degree of effluent reduction attainable by the application of the best available tech

nology economically achievable. Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable, except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/1,000 kkg or lb/million lb of sand reclaimed; kg/62.3 million Sm3 or 1b/billion SCF of air scrubbed) effluent

Copper (T) Lead (T) Zinc (T)

(mg) 2 (mg) 2 Copper (T)

0.29

0.16 0.0029 Lead (T)

0.79

0.39 0.0098 Zinc (T)

1.47

0.56 0.0179 kg/1,000 kkg (pounds per million pounds) of metal poured.

2 These concentrations must be multiplied by the ratio of (5.33/x) where x is the actual normalized process wastewater flow in gallons per 1,000 pounds of metal poured) for a specific plant

(b) Casting Quench Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

(mg/1)2 (mg1)2 Copper (T)

0.29

0.16 0.0031 Lead (T)

0.79

0.39 0.0105 Zinc (T)

1.47

0.56 0.019 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (5.7/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(c) Dust Collection Scrubber Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

1

(mg)? (mg/1)2 Copper (T)

0.29

0.16 0.0031 Lead (T)

0.53

0.26 0.0071 Zinc (T)

0.98

0.37 0.0124 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (5.7/x) where x is the actual normalized process wastewater flow (in gallons 1,000 pounds of metal poured) for a specific plant.

(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.

(mg/1)2

(mg1)2 Copper (T)

0.29

0.16 0.0488 Lead (T)

0.53

0.26 0.113 Zinc (T)

0.98

0.37 0.195 Total phenols

0.86

0.3

0.15 kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.09/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.

BAT EFFLUENT LIMITATIONS

Copper (T)
Lead (T)
Zinc (T)
Total phenols

1

(mg1)2 (mg/1)2 Copper (T)

0.29

0.16 0.0488 Lead (T)

0.79

0.39 0.165 Zinc (T)

1.47

0.56 0.3 Total phenols

0.86

0.3

0.15 kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed,

2 These concentrations must be multiplied by the ratio of (0.09/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.

(e) Investment Casting. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

(mg) 2 (mg)? Copper (T)

0.29

0.16

0.716 Lead (T)

0.79

0.39

2.42 Zinc (T)

1.47

0.56

4.41 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (1,320/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(f) Melting Furnace Scrubber Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per

ear.

BAT EFFLUENT LIMITATIONS

kg/62.3 million Sm3 (pounds per

Zinc (T)

(mg/1) 2 (mg1)2 Copper (T)

0.29

0.16 0.0096 Lead (T)

0.79

0.39 0.0325 Zinc (T)

1.47

0.56 0.0591 kg/1,000 kkg (pounds per million pounds) of metal poured 2 These concentrations must be multiplied by the ratio of (17.7/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a spe. cific plant.

(h) Slag Quench Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

BAT EFFLUENT LIMITATIONS

Maximum for any 1

day

Maximum for monthly average

Annual aver

age 1

(mg1)2 (mg) 2 Copper (T)

0.29

0.16 0.0096 Lead (T)

0.53

0.26 0.0222 Zinc (T)

0.98

0.37 0.0384 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (17.7/x) where x is the actual normalized process wastewater flow (in gallons per 1.000 pounds of metal poured) for a specific plant.

(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.

(mg/1) 2

(mg) ? Copper (T)

0.29

0.16 0.0118 Lead (T)

0.53

0.26 0.0273 Zinc (T)

0.98

0.37 0.0473 Kg/1,000 kkg (pounds per million pounds) of metal poured.

2 These concentrations must be multiplied by the ratio of (21.8/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant

(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.

BAT EFFLUENT LIMITATIONS

kg/1,000 kkg (pounds per mil

lion pounds) of metal poured

Copper (T) Lead (T) Zinc (T)

Copper (T) Lead (T) Zinc (T)

BAT EFFLUENT LIMITATIONS

age'

Maximum Maximum Annual for any 1 for monthly

averday average

(mg/1) 2 (mg) 2 Copper (T)

0.29

0.16 0.0118 Lead (T)

0.79

0.39 0.04 Zinc (T)

1.47

0.56 0.0728 *kg/1.000 kkg (pounds per million pounds) of metal poured.

2 These concentrations must be multiplied by the ratio of (21.8/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(i) Wet Sand Reclamation Operations. (1) Applicable to plants that are casting primarily ductible or gray iron and to plants that are casting malleable iron where greater than 3,557 tons of metal are poured per year.

Maximum for any 1 day

kg/1,000 kkg (pounds per mil

lion pounds) of sand reclaimed

kg/1000 kkg (pounds per million pounds) of sand reclaimed 2 These concentrations

must be multiplied by the ratio of (89.5/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of sand reclaimed) for a specific plant

(50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986)

source

8 464.34 New

performance standards. Any new source subject to this subpart must achieve the following new source performance standards (NSPS), except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/1,000 kkg or lb/million lb of sand reclaimed; kg/62.3 million Sm3 or lb/billion SCF of air scrubbed) effluent standards for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass standards and maximum day and maximum monthly average concentration (mg/l) standards shall apply. Concentration standards and annual average standards shall only apply to non-continuous dischargers.

(a) Casting Cleaning Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.

for

mass