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 Sm\3\ 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.
NSPS------------------------------------------------------------------------
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).................................. 0.0307 0.0168Lead (T).................................... 0.0211 0.0104Zinc (T).................................... 0.0303 0.0116Oil and grease.............................. 1.2 0.399TSS......................................... 0.598 0.479pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.77 0.42 0.0068Lead (T)........................... 0.53 0.26 0.006Zinc (T)........................... 0.76 0.29 0.0072Oil and grease..................... 30 10 0.199TSS................................ 15 12 0.104pH................................. (\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 (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------------------------------------------------------------------------
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)................................ 0.928 0.506Lead (T).................................. 0.639 0.314Zinc (T).................................. 0.916 0.35Oil and grease............................ 36.2 12.1TSS....................................... 18.1 14.5pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)........................... 0.77 0.42 0.205Lead (T)............................. 0.53 0.26 0.181Zinc (T)............................. 0.76 0.29 0.217Oil and grease....................... 30 10 6.03TSS.................................. 15 12 3.13pH................................... (\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 (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.
NSPS------------------------------------------------------------------------
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)................................ 0.553 0.301Lead (T).................................. 0.38 0.187Zinc (T).................................. 0.545 0.208Total phenols............................. 0.617 0.215Oil and grease............................ 21.5 7.18TSS....................................... 10.8 8.61pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.77 0.42 0.122Lead (T)........................... 0.53 0.26 0.108Zinc (T)........................... 0.76 0.29 0.129Total phenols...................... 0.86 0.3 0.144Oil and grease..................... 30 10 3.59TSS................................ 15 12 1.87pH................................. (\3\) (\3\) (\3\)------------------------------------------------------------------------\1\ kg/62.3 million Sm \3\ (pounds per billion SCF) of air scrubbed.\2\ These concentrations must be multiplied by the ratio of (0.086/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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
kg/1,000 kkg (pounds per
millions pounds) of metal
poured
-----------------------------Copper (T)................................ 8.48 4.63Lead (T).................................. 5.84 2.86Zinc (T).................................. 8.37 3.19Oil and grease............................ 330 110TSS....................................... 165 132pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ mg/l) \2\Copper (T)......................... 0.77 0.42 1.87Lead (T)........................... 0.53 0.26 1.65Zinc (T)........................... 0.76 0.29 1.98Oil and grease..................... 30 10 55.1TSS................................ 15 12 28.6pH................................. (\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.
(f) Melting Furnace Scrubber Operations.
NSPS------------------------------------------------------------------------
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)................................ 1.81 0.988Lead (T).................................. 1.25 0.612Zinc (T).................................. 1.79 0.673Total phenols............................. 2.02 0.706Oil and grease............................ 70.6 23.5TSS....................................... 35.3 28.2pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................... 0.77 0.42 0.4Lead (T)........................... 0.53 0.26 0.353Zinc (T)........................... 0.76 0.29 0.424Total phenols...................... 0.86 0.3 0.471Oil and grease..................... 30 10 11.8TSS................................ 15 12 6.12pH................................. (\3\) (\3\) (\3\)------------------------------------------------------------------------\1\ kg/62.3 Sm \3\ (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 waste-water 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.
NSPS------------------------------------------------------------------------
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)................................ 0.392 0.214Lead (T).................................. 0.27 0.132Zinc (T).................................. 0.387 0.148Oil and grease............................ 15.3 5.09TSS....................................... 7.63 6.11pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for Annual
Maximum for monthly average
any 1 day average \1\------------------------------------------------------------------------
(mg/1) \2\ (mg/1) \2\Copper (T)........................... 0.77 0.42 0.0865Lead (T)............................. 0.53 0.26 0.0763Zinc (T)............................. 0.76 0.29 0.0916Oil and grease....................... 30 10 2.54TSS.................................. 15 12 1.32pH................................... (\3\) (\3\) (\3\)------------------------------------------------------------------------\1\ kg/1,000 kkg (pounds per million pound) of metal poured.\2\ 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 specific plant.\3\ Within the range of 7.0 to 10.0 at all times. [50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986]