Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with a 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary nickel and cobalt process wastewater introduced into a POTW shall not exceed the following values:
(a) Raw material dust control.
PSNS for the Primary Nickel and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
copper, nickel, and
cobalt in the crushed
raw material
--------------Copper........................................ 0.099 0.047Nickel........................................ 0.042 0.028Ammonia (as N)................................ 10.260 4.512Cobalt........................................ 0.011 0.005------------------------------------------------------------------------
(b) Nickel wash water.
PSNS for the Primary Nickel and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
nickel powder washed
--------------Copper........................................ 0.043 0.021Nickel........................................ 0.019 0.013Ammonia (as N)................................ 4.515 1.985Cobalt........................................ 0.005 0.002------------------------------------------------------------------------
(c) Nickel reduction decant.
PSNS for the Primary Nickel and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) nickel
produced
--------------Copper........................................ 16.250 7.744Nickel........................................ 6.982 4.697Ammonia (as N)................................ 1,692.000 743.900Cobalt........................................ 1.777 0.889------------------------------------------------------------------------
(d) Cobalt reduction decant.
PSNS for the Primary Nickel and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 27.390 13.050Nickel........................................ 11.770 7.917Ammonia (as N)................................ 2,852.000 1,254.000Cobalt........................................ 2.996 1.498------------------------------------------------------------------------ Sec. 421.237 [Reserved]