Copper (T) Lead (T) Zinc (T) Total phenols Oil and grease TSS pH

1.81 1.86 2.68 2.02 70.6 89.4 (").

0.988 0.918 1.01 0.706 23.5 35.3 (1)

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

0.77

0.42

0.122 Lead (T)

0.79

0.39

0.158 Zinc (T)

1.14

0.43

0.194 Total phenols

0.86

0.3

0.144 Oil and grease

30
10

3.59 TSS

38
15

7.18 pH

(3)

(3)

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

2 These concentrations must be multiplied by the ratio of (0.086/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant. Within the range of 7.0 to 10.0 at all times.

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

(e) Investment Casting.

(mg/l) 2 (mg) 2 Copper (T)

0.77

0.42 0.4 Lead (T)

0.79

0.39

0.518 Zinc (T)

1.14

0.43

0.635 Total phenols

0.86

0.3

0.467 Oil and grease

30

10

11.8 TSS

38

15

23.5 PH

(3)

(3)

(3) kg/62.3 million Sm3 (pound per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.282/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant 3 Within the range of 7.0 to 10.0 at all times. (g) Mold Cooling Operations.

208-169 D-19

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

0.77

0.42

0.0865 Lead (T)

0.79

0.39 0.112 Zinc (T)

1.14

0.43 0.137 Oil and grease

30

10

2.54 TSS

38

15

5.09 PH

(3)

(3)

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

2 These concentrations must be multiplied by the ratio of (61/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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

(mg) (mg) 2 Copper (T)

0.77

0.42 0.0068 Lead (T)

0.53

0.26 0.006 Zinc (T)

0.76

0.29 0.0072 kg/1,000 kkg (pounds per million pounds) of metal poured.

2 These concentrations must be multiplied by the ratio of (4.8/x) where x is the actual normalized process waste-water flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(b) Direct Chill Casting Operations.

BAT EFFLUENT LIMITATIONS

(50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986)

Pollutant or pollutant property

Maximum for any 1

day

Maximum for monthly aver

age

$ 464.23 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/62.3 million Sm 3 or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, and total phenols. For non-continuous discharges, 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 Quench Operations.

kg/1,000 kkg (pounds per

million pounds) of metal poured

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

(mg1)2

(mg) 2

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

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

0.77

0.42

1.87 Lead (T)

0.53

0.26

1.65 Zinc (T)

0.76

0.29

1.98 kg/1000 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.

BAT EFFLUENT LIMITATIONS

8 464.24 New source 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/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 for monthly average concentration (mg/l) standards shall apply. Concentration standards and annual average mass standards shall only apply to non-continuous dischargers.

(a) Casting Quench Operations.

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

0.77

0.42

0.4 Lead (T)

0.53

0.26

0.353 Zinc (T)

0.76

0.29 0.424 Total phenols

0.86

0.3

0.471 1 kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.282/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

(g) Mold Cooling Operations.

Copper (T)

0.0307 Lead (T)

0.0211 Zinc (T)

0.0303 Oil and grease

1.2 TSS

0.598 pH

(1) * Within the range of 7.0 to 10.0 at all times.

0.0168 0.0104 0.0116 0.399 0.479 (1)

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

0.77

0.42

0.0068 Lead (T)

0.53

0.26 0.006 Zinc (T)

0.76

0.29

0.0072 Oil and grease

30

10

0.199 TSS

15
12

0.104 PH

(3)

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

2 These concentrations must be multiplied by the ratio of (4.8/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant 3 Within the range of 7.0 to 10.0 at all times. (b) Direct Chill Casting Operations.

NSPS

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

2 These concentrations must be multiplied by the ratio of (0.086/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times.

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

(e) Investment Casting.

NSPS

Copper (T) Lead (T) Zinc (T) Oil and grease TSS pH

0.928 0.639 0.916 36.2 18.1 (")

0.506 0.314 0.35 12.1 14.5 ()

Pollutant or pollutant prop

erty

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

0.77

0.42 0.205 Lead (T)

0.53

0.26 0.181 Zinc (T)

0.76

0.29 0.217 Oil and grease

30

10

6.03 TSS

15

12

3.13 pH

(3)

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

2 These concentrations must be multiplied by the ratio of (145/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times. (c) Dust Collection Scrubber Operations.

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

(f) Melting Furnace Scrubber Operations.

kg/1000 kkg (pounds per million pounds) of

metal poured

Zinc (T)

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

0.77

0.42

0.4 Lead (T)

0.53

0.26

0.353 0.76

0.29

0.424 Total phenols

0.86

0.3

0.471 Oil and grease

30

10

11.8 TSS

15

12

6.12 PH

(3)

(3) (3) 1 kg/623 Sm3 (pounds per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.282/x) where x is the actual normalized process wastewater flow in gallons per 1,000 SCF of air scrubbed) for a specific plant. Within the range of 7.0 to 10.0 at all times. (g) Mold Cooling Operations.

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

Zinc (T)
Oil and grease

30

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

0.77

0.42 0.0865 Lead (T)

0.53

0.26 0.0763 0.76

0.29 0.0916 10

2.54 TSS

15

12

1.32 PH

(3)

(3) (3) kg/1,000 kkg (pounds per million pound) of metal poured. ? These concentrations must be multiplied by the ratio of (61/x) where x is the actual normalized process waste-water flow (in gallons per 1,000 pounds of metal poured) for a spe

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

cific plant.

(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.

(e) Investment Casting.

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