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 Sm\3\ or lb/billion SCF of air scrubbed) effluent 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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0129 0.0071Lead (T).................................... 0.0237 0.0116Zinc (T).................................... 0.0437 0.0165------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum
Maximum for Annual
for any 1 monthly average
day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\ .......Copper (T)............................. 0.29 0.16 0.0029Lead (T)............................... 0.53 0.26 0.0067Zinc (T)............................... 0.98 0.37 0.0116------------------------------------------------------------------------\1\ 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.
(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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0129 0.0071Lead (T).................................... 0.0353 0.0174Zinc (T).................................... 0.0656 0.025------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum
Maximum for Annual
for any 1 monthly average
day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)............................. 0.29 0.16 0.0029Lead (T)............................... 0.79 0.39 0.0098Zinc (T)............................... 1.47 0.56 0.0179------------------------------------------------------------------------\1\ 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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/100 kkg (pounds per
million pounds) of metal
poured
---------------------------
Copper (T).................................. 0.0138 0.0076Lead (T).................................... 0.0252 0.0124Zinc (T).................................... 0.0466 0.0176------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)........................... 0.29 0.16 0.0031Lead (T)............................. 0.53 0.26 0.0071Zinc (T)............................. 0.98 0.37 0.0124------------------------------------------------------------------------\1\ 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.
(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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------
Copper (T).................................. 0.0138 0.0076Lead (T).................................... 0.0376 0.0185Zinc (T).................................... 0.0699 0.0266------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)........................... 0.29 0.16 0.0031Lead (T)............................. 0.79 0.39 0.0105Zinc (T)............................. 1.47 0.56 0.019------------------------------------------------------------------------\1\ 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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/62.3 million Sm\3\
(pounds per billion SCF) of
air scrubbed
-----------------------------Copper (T)................................ 0.218 0.12Lead (T).................................. 0.398 0.195Zinc (T).................................. 0.736 0.278Total phenols............................. 0.646 0.225------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)........................... 0.29 0.16 0.0488Lead (T)............................. 0.53 0.26 0.113Zinc (T)............................. 0.98 0.37 0.195Total phenols........................ 0.86 0.3 0.15------------------------------------------------------------------------\1\ kg/62.3 million Sm\3\ (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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/62.3 million Sm\3\
(pounds per billion SCF) of
air scrubbed
-----------------------------Copper (T)................................ 0.218 0.12Lead (T).................................. 0.593 0.293Zinc (T).................................. 1.1 0.421Total phenols............................. 0.656 0.225------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)........................... 0.29 0.16 0.0488Lead (T)............................. 0.79 0.39 0.165Zinc (T)............................. 1.47 0.56 0.3Total phenols........................ 0.86 0.3 0.15------------------------------------------------------------------------\1\ kg/62.3 million Sm\3\ (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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
-----------------------------Copper (T)................................ 3.19 1.76Lead (T).................................. 5.84 2.86Zinc (T).................................. 10.8 4.07------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.29 0.16 0.716Lead (T)........................... 0.53 0.26 1.65Zinc (T)........................... 0.98 0.37 2.86------------------------------------------------------------------------\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.
(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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
-----------------------------Copper (T)................................ 3.19 1.76Lead (T).................................. 8.7 4.3Zinc (T).................................. 16.2 6.17------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.29 0.16 0.716Lead (T)........................... 0.79 0.39 2.42Zinc (T)........................... 1.47 0.56 4.41------------------------------------------------------------------------\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.
(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 year.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/62.3 million Sm\3\
(pounds per billion SCF) of
air scrubbed
-----------------------------Copper (T)................................ 1.02 0.561Lead (T).................................. 1.86 0.911Zinc (T).................................. 3.44 1.3Total Phenols............................. 3.01 1.05------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\ .........Copper (T)......................... 0.29 0.16 0.228Lead (T)........................... 0.53 0.26 0.526Zinc (T)........................... 0.98 0.37 0.911Total Phenols...................... 0.86 0.3 0.701------------------------------------------------------------------------\1\ kg/62.3 million Sm \3\ (pounds per billion SCF) of air scrubbed\2\ These concentrations must be multiplied by the ratio of (0.42/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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/62.3 million Sm\3\
(pounds per billion SCF) of
air scrubbed
-----------------------------Copper (T)................................ 1.02 0.561Lead (T).................................. 2.77 1.37Zinc (T).................................. 5.15 1.96Total Phenols............................. 3.01 1.05------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\ .........Copper (T)......................... 0.29 0.16 0.228Lead (T)........................... 0.79 0.39 0.771Zinc (T)........................... 1.47 0.56 1.4Total Phenols...................... 0.86 0.3 0.701------------------------------------------------------------------------\1\ kg/62.3 million Sm \3\ (pounds per billion SCF) of air scrubbed.\2\ These concentrations must be multiplied by the ratio of (0.42/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. (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
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0428 0.0236Lead (T).................................... 0.0783 0.0384Zinc (T).................................... 0.145 0.0546------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.29 0.16 0.0096Lead (T)............................. 0.53 0.26 0.0222Zinc (T)............................. 0.98 0.37 0.0384------------------------------------------------------------------------\1\ 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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0428 0.0236Lead (T).................................... 0.117 0.0576Zinc (T).................................... 0.217 0.0827------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.29 0.16 0.0096Lead (T)............................. 0.79 0.39 0.0325Zinc (T)............................. 1.47 0.56 0.0591------------------------------------------------------------------------\1\ 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.
(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
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0527 0.0291Lead (T).................................... 0.0964 0.0473Zinc (T).................................... 0.178 0.0673------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.29 0.16 0.0118Lead (T)............................. 0.53 0.26 0.0273Zinc (T)............................. 0.98 0.37 0.0473------------------------------------------------------------------------\1\ 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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of metal
poured
---------------------------Copper (T).................................. 0.0527 0.0291Lead (T).................................... 0.144 0.0709Zinc (T).................................... 0.267 0.102------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.29 0.16 0.0118Lead (T)............................. 0.79 0.39 0.04Zinc (T)............................. 1.47 0.56 0.0728------------------------------------------------------------------------\1\ 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.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of sand
reclaimed
-----------------------------
Copper (T)................................ 0.217 0.12Lead (T).................................. 0.396 0.194Zinc (T).................................. 0.732 0.276Total Phenols............................. 0.642 0.224------------------------------------------------------------------------ ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.29 0.16 0.0485Lead (T)........................... 0.53 0.26 0.112Zinc (T)........................... 0.98 0.37 0.194Total Phenols...................... 0.86 0.3 0.149------------------------------------------------------------------------\1\ 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.
(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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
million pounds) of sand
reclaimed
-----------------------------
Copper (T)................................ 0.217 0.12Lead (T).................................. 0.59 0.291Zinc (T).................................. 1.1 0.418Total Phenols............................. 0.642 0.224------------------------------------------------------------------------
PSNS------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.29 0.16 0.0485Lead (T)............................. 0.79 0.39 0.164Zinc (T)............................. 1.47 0.56 0.299Total Phenols........................ 0.86 0.3 0.149------------------------------------------------------------------------\1\ 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]