Statutes, codes, and regulations
Code of Federal Regulations
Title 40 - PROTECTION OF ENVIRONMENTChapter I - ENVIRONMENTAL PROTECTION AGENCYSubchapter N - EFFLUENT GUIDELINES AND STANDARDSPart 464 - METAL MOLDING AND CASTING POINT SOURCE CATEGORY
Subpart A - ALUMINUM CASTING SUBCATEGORY
Section 464.14 - New source performance standards

40 C.F.R. § 464.14

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Current through September 30, 2024
Section 464.14 - 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 Cleaning Operations.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.07710.0421
Lead (T)0.07910.039
Zinc (T)0.1140.0431
Oil and grease3.01.0
TSS3.81.5
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.420.017
Lead (T)0.790.390.022
Zinc (T)1.140.430.027
Oil and grease30100.501
TSS38151.0
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (12/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)Casting Quench Operations.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.00930.0051
Lead (T)0.00960.0047
Zinc (T)0.01380.0052
Oil and grease0.3630.121
TSS0.460.182
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.420.0021
Lead (T)0.790.390.0027
Zinc (T)1.140.430.0033
Oil and grease30100.0605
TSS38150.121
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (1.45/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)Die Casting Operations.

NSPS

Pollutant or pollutant property Maximum for one 1 day Maximum for monthly average
kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.00660.0036
Lead (T)0.00680.0034
Zinc (T)0.00980.0037
Total Phenols0.00740.0026
Oil and grease0.2590.0864
TSS and0.330.13
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.420.0015
Lead (T)0.790.390.0019
Zinc (T)1.140.430.0023
Total phenols0.860.30.0017
Oil and grease30100.0432
TSS and38150.0864
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (1.04/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured)

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

(d)Dust Collection Scrubber Operations.

NSPS

Pollutant of pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Cooper (T)0.2310.126
Lead (T)0.2370.117
Zinc (T)0.3430.129
Total phenols0.2580.09
Oil and grease9.013.0
TSS11.44.51
pH(1)(1)

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

Maximum for any 1 day maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Cooper (T)0.770.420.0511
Lead (T)0.790.390.0661
Zinc (T)1.140.430.0811
Total phenols0.860.30.0601
Oil and grease30101.5
TSS38153.0
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (0.036/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.

(e)Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.
(f)Investment Casting.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)8.484.63
Lead (T)8.74.3
Zinc (T)12.64.74
Oil and grease330110
TSS419165
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.421.87
Lead (T)0.790.392.42
Zinc (T)1.140.432.97
Oil and grease301055.1
TSS3815110
pH(3)(3)(3)

1 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.

(g)Melting Furnace Scrubber Operations.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Copper (T)3.011.64
Lead (T)3.091.52
Zinc (T)4.451.68
Total phenols3.361.17
Oil and grease11739.1
TSS14858.6
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.420.664
Lead (T)0.790.390.859
Zinc (T)1.140.431.05
Total phenols0.860.30.781
Oil and grease301019.5
TSS381539.1
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (0.468/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.

(h)Mold Cooling Operations.

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.2970.162
Lead (T)0.3050.151
Zinc (T)0.440.166
Oil and grease11.63.86
TSS14.75.79
pH(1)(1)

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

Maximum for any 1 day Maximum for monthly averageAnnual average1
(mg/l)2(mg/l)2
Copper (T)0.770.420.0656
Lead (T)0.790.390.0849
Zinc (T)1.140.430.104
Oil and grease30101.93
TSS38153.86
pH(3)(3)(3)

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

2 These concentrations must be multiplied by the ratio of (46.3/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.

40 C.F.R. §464.14

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