CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY > SUBPART A—Aluminum Casting Subcategory (§464.10 to §464.17) > 464.15—Pretreatment standards for existing sources.

464.15—Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.
(a) Casting Cleaning Operations.
PSES
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) 0.0771 0.0421
Lead (T) 0.0791 0.039
Zinc (T) 0.114 0.0431
(b) Casting Quench Operation.
PSES
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) 0.0093 0.0051
Lead (T) 0.0096 0.0047
Zinc (T) 0.0138 0.0052
TT0 0.029 0.0095
Oil and grease (for alternate monitoring) 0.363 0.121
(c) Die Casting Operations.
PSES
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) 0.0066 0.0036
Lead (T) 0.0068 0.0034
Zinc (T) 0.0098 0.0037
Total phenols 0.0074 0.0026
TTO 0.0308 0.01
Oil and grease (for alternate monitoring) 0.259 0.0864
(d) Dust Collection Scrubber Operations.
PSES
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 0.231 0.126
Lead (T) 0.237 0.117
Zinc (T) 0.343 0.129
Total phenols 0.258 0.09
TTO 0.613 0.2
Oil and grease (for alternate monitoring) 9.01 3.00
(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.
(f) Investment Casting.
PSES
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) 8.48 4.63
Lead (T) 8.7 4.3
Zinc (T) 12.6 4.74
TTO 18.1 5.91
Oil and grease (for alternate monitoring 330 110
(g) Melting Furnace Scrubber Operations.
PSES
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 3.01 1.64
Lead (T) 3.09 1.52
Zinc (T) 4.45 1.68
Total phenols 3.36 1.17
TTO 7.97 2.6
Oil and grease (for alternate monitoring) 117 39.1
(h) Mold Cooling Operations.
PSES
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) 0.297 0.162
Lead (T) 0.305 0.151
Zinc (T) 0.44 0.166
TTO 0.935 0.304
Oil and grease (for alternate monitoring) 11.6 3.86

Code of Federal Regulations

[50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986]
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.
(a) Casting Cleaning Operations.
PSES
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) 0.0771 0.0421
Lead (T) 0.0791 0.039
Zinc (T) 0.114 0.0431
(b) Casting Quench Operation.
PSES
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) 0.0093 0.0051
Lead (T) 0.0096 0.0047
Zinc (T) 0.0138 0.0052
TT0 0.029 0.0095
Oil and grease (for alternate monitoring) 0.363 0.121
(c) Die Casting Operations.
PSES
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) 0.0066 0.0036
Lead (T) 0.0068 0.0034
Zinc (T) 0.0098 0.0037
Total phenols 0.0074 0.0026
TTO 0.0308 0.01
Oil and grease (for alternate monitoring) 0.259 0.0864
(d) Dust Collection Scrubber Operations.
PSES
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 0.231 0.126
Lead (T) 0.237 0.117
Zinc (T) 0.343 0.129
Total phenols 0.258 0.09
TTO 0.613 0.2
Oil and grease (for alternate monitoring) 9.01 3.00
(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.
(f) Investment Casting.
PSES
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) 8.48 4.63
Lead (T) 8.7 4.3
Zinc (T) 12.6 4.74
TTO 18.1 5.91
Oil and grease (for alternate monitoring 330 110
(g) Melting Furnace Scrubber Operations.
PSES
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 3.01 1.64
Lead (T) 3.09 1.52
Zinc (T) 4.45 1.68
Total phenols 3.36 1.17
TTO 7.97 2.6
Oil and grease (for alternate monitoring) 117 39.1
(h) Mold Cooling Operations.
PSES
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) 0.297 0.162
Lead (T) 0.305 0.151
Zinc (T) 0.44 0.166
TTO 0.935 0.304
Oil and grease (for alternate monitoring) 11.6 3.86

Code of Federal Regulations

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