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 D—Zinc Casting Subcategory (§464.40 to §464.47) > 464.45—Pretreatment standards for existing sources.

464.45—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 Quench 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) 0.0344 0.0187
Lead (T) 0.0237 0.0116
Zinc (T) 0.0339 0.0129
TTO 0.093 0.0304
Oil and grease (for alternate monitoring) 1.34 0.446
(b) 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) 0.0046 0.0022
Zinc (T) 0.0066 0.0025
Total phenols 0.0074 0.0026
TTO 0.0196 0.0064
Oil and grease for alternate monitoring) 0.259 0.0864
(c) 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) 1.56 0.852
Lead (T) 1.07 0.527
Zinc (T) 1.54 0.588
Total phenols 1.74 0.608
TTO 3.95 1.29
Oil and grease for alternate monitoring) 60.8 20.3
(d) 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) 0.304 0.166
Lead (T) 0.209 0.103
Zinc (T) 0.3 0.114
TTO 0.821 0.268
Oil and grease for alternate monitoring) 11.8 3.94
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 Quench 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) 0.0344 0.0187
Lead (T) 0.0237 0.0116
Zinc (T) 0.0339 0.0129
TTO 0.093 0.0304
Oil and grease (for alternate monitoring) 1.34 0.446
(b) 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) 0.0046 0.0022
Zinc (T) 0.0066 0.0025
Total phenols 0.0074 0.0026
TTO 0.0196 0.0064
Oil and grease for alternate monitoring) 0.259 0.0864
(c) 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) 1.56 0.852
Lead (T) 1.07 0.527
Zinc (T) 1.54 0.588
Total phenols 1.74 0.608
TTO 3.95 1.29
Oil and grease for alternate monitoring) 60.8 20.3
(d) 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) 0.304 0.166
Lead (T) 0.209 0.103
Zinc (T) 0.3 0.114
TTO 0.821 0.268
Oil and grease for alternate monitoring) 11.8 3.94