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).................................. 0.0344 0.0187Lead (T).................................... 0.0237 0.0116Zinc (T).................................... 0.0339 0.0129Oil and grease.............................. 1.34 0.446TSS......................................... 0.67 0.536pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ----------------------------------------------------------------------------------------------------------------
Maximum for
Maximum for monthly Annual average
any 1 day average \1\----------------------------------------------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)......................................................... 0.77 0.42 0.0076Lead (T)........................................................... 0.53 0.26 0.0067Zinc (T)........................................................... 0.76 0.29 0.008Oil and grease..................................................... 30 10 0.223TSS................................................................ 15 12 0.116pH................................................................. (\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 (5.34/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) Die 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).................................. 0.0066 0.0036Lead (T).................................... 0.0046 0.0022Zinc (T).................................... 0.0066 0.0025Total phenols............................... 0.0074 0.0026Oil and grease.............................. 0.259 0.0864TSS......................................... 0.13 0.104pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ----------------------------------------------------------------------------------------------------------------
Maximum for
Maximum for monthly Annual average
any 1 day average \1\----------------------------------------------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T)......................................................... 0.77 0.42 0.0015Lead (T)........................................................... 0.53 0.26 0.0013Zinc (T)........................................................... 0.76 0.29 0.0016Total phenols...................................................... 0.86 0.3 0.0017Oil and grease..................................................... 30 10 0.0432TSS................................................................ 15 12 0.0225pH................................................................. (\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) for a specific plant.\3\Within the range of 7.0 to 10.0 at all times.
(c) 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)................................ 1.56 0.852Lead (T).................................. 1.07 0.527Zinc (T).................................. 1.54 0.588Total phenols............................. 1.74 0.608Oil and grease............................ 60.8 20.3TSS....................................... 30.4 24.3pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ----------------------------------------------------------------------------------------------------------------
Maximum for
Maximum for monthly Annual average
any 1 day average \1\----------------------------------------------------------------------------------------------------------------
(mg/l)\2\ (mg/l)\2\Copper (T)......................................................... 0.77 0.42 0.345Lead (T)........................................................... 0.53 0.26 0.304Zinc (T)........................................................... 0.76 0.29 0.365Total phenols...................................................... 0.86 0.3 0.406Oil and grease..................................................... 30 10 10.1TSS................................................................ 15 12 5.27pH................................................................. (\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 (0.243/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) 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)................................ 0.304 0.166Lead (T).................................. 0.209 0.103Zinc (T).................................. 0.3 0.114Oil and grease............................ 11.8 3.94TSS....................................... 5.91 4.73pH........................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------
Maximum for
Maximum for monthly Annual
any 1 day average average \1\------------------------------------------------------------------------
(mg/l) \2\ (mg/l) \2\Copper (T).................... 0.77 0.42 0.067Lead (T)...................... 0.53 0.26 0.0591Zinc (T)...................... 0.76 0.29 0.071Oil and grease................ 30 10 1.97TSS........................... 15 12 1.03pH............................ (\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 (47.3/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. [50 FR 45247, Oct. 30, 1985; 51 FR 21762, June 16, 1986]