achievable (BAT).
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.
(a) Cold rolling mills--(1) Recirculation--single stand.
Subpart J------------------------------------------------------------------------
BAT effluent limitations
-------------------------
Average of
daily
Pollutant or pollutant property Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per 1,000
lb) of product
--------------Chromium \1\.................................. 0.0000209 0.0000084Lead.......................................... 0.0000094 0.0000031Nickel \1\.................................... 0.0000188 0.0000063Zinc.......................................... 0.0000063 0.0000021Naphthalene................................... 0.0000021 ...........Tetrachloroethylene........................... 0.0000031 ...........------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold rolling wastewaters are treated
with descaling or combination acid pickling wastewaters.
(2) Recirculation--multiple stands.
Subpart J------------------------------------------------------------------------
BAT effluent limitations
--------------------------
Average of
daily
Pollutant or pollutant property Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per 1,000
lb) of product
---------------Chromium \1\................................. 0.000104 0.0000418Lead......................................... 0.0000469 0.0000156Nickel \1\................................... 0.0000939 0.0000313Zinc......................................... 0.0000313 0.0000104Naphthalene.................................. 0.0000104 ...........Tetrachloroethylene.......................... 0.0000156 ...........------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold rolling wastewaters are treated
with descaling or combination acid pickling wastewaters.
(3) Combination.
Subpart J------------------------------------------------------------------------
BAT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per
1,000 lb) of product
-------------Chromium \1\................................... 0.00125 0.000501Lead........................................... 0.000563 0.000188Nickel \1\..................................... 0.00113 0.000376Zinc........................................... 0.000376 0.000125Naphthalene.................................... 0.000125 ...........
Tetrachloroethylene............................ 0.000188 ...........------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold rolling wastewaters are cotreated
with descaling or combination acid pickling wastewaters.
(4) Direct application--single stand.
Subpart J------------------------------------------------------------------------
BAT effluent limitations
---------------------------
Average of
Pollutant or pollutant property daily values
Maximum for for 30
any 1 day consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per 1,000
lb) of product
---------------Chromium \1\................................ 0.000376 0.000150Lead........................................ 0.000169 0.0000563Nickel \1\.................................. 0.000338 0.000113Zinc........................................ 0.000113 0.0000376Naphthalene................................. 0.0000376 ............Tetrachloroethylene......................... 0.0000563 ............------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold rolling wastewaters are treated
with descaling or combination acid pickling wastewaters.
(5) Direct application--multiple stands.
Subpart J------------------------------------------------------------------------
BAT effluent
limitations
------------------------
Average of
Pollutant or pollutant property daily
Maximum values for
for any 1 30
day consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per
1,000 lb) of product
-------------Chromium \1\................................... 0.00167 0.000668Lead........................................... 0.000751 0.000250Nickel \1\..................................... 0.00150 0.000501Zinc........................................... 0.000501 0.000167Naphthalene.................................... 0.000167 ...........Tetrachloroethylene............................ 0.000250 ...........------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold rolling wastewaters are treated
with descaling or combination acid pickling wastewaters.
(b) Cold worked pipe and tube--(1) Using water.
Subpart J------------------------------------------------------------------------
BAT effluent limitations
-------------------------
Average of
daily
Pollutant or pollutant property Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per 1,000
lb) of product
--------------Chromium \1\.................................. 0.0000209 0.0000084Lead.......................................... 0.0000094 0.0000031Nickel \1\.................................... 0.0000188 0.0000063Zinc.......................................... 0.0000063 0.0000021------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold forming wastewaters are treated
with descaling or combination acid pickling wastewaters.
(2) Using oil solutions.
Subpart J------------------------------------------------------------------------
BAT effluent limitations
-------------------------
Average of
daily
Pollutant or pollutant property Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Kg/kkg (pounds per 1,000
lb) of product
--------------Chromium \1\.................................. 0.0000209 0.0000084Lead.......................................... 0.0000094 0.0000031Nickel \1\.................................... 0.0000188 0.0000063Zinc.......................................... 0.0000063 0.0000021Naphthalene................................... 0.0000021 ...........Tetrachloroethylene........................... 0.0000031 ...........------------------------------------------------------------------------\1\ The limitations for chromium and nickel shall be applicable in lieu
of those for lead and zinc when cold forming wastewaters are treated
with descaling or combination acid pickling wastewaters. [47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]