40 C.F.R. § 421.234

Standards of performance for new sources.

Last amended: 2016Year: 2026Length: 288 wordsOfficial source

Cite as 40 C.F.R. § 421.234 (2026)

Any new source subject to this subpart shall achieve the following new source performance standards: (a) Raw Material Dust Control. NSPS for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material Copper 0.099 0.047 Nickel 0.042 0.028 Ammonia (as N) 10.260 4.512 Cobalt 0.011 0.005 Total suspended solids 1.155 0.924 pH 1 1 1 Within the range of 7.5 to 10.0 at all times. (b) Nickel wash water. NSPS for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of nickel powder washed Copper 0.043 0.021 Nickel 0.019 0.013 Ammonia (as N) 4.515 1.985 Cobalt 0.005 0.002 Total suspended solids 0.508 0.406 pH 1 1 1 Within the range of 7.5 to 10.0 at all times. (c) Nickel reduction decant. NSPS for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of nickel produced Copper 16.250 7.744 Nickel 6.982 4.697 Ammonia (as N) 1,692.000 743.900 Cobalt 1.777 0.889 Total suspended solids 190.400 152.300 pH 1 1 1 Within the range of 7.5 to 10.0 at all times. (d) Cobalt reduction decant. NSPS for the Primary Nickel and Cobalt Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of cobalt produced Copper 27.390 13.050 Nickel 11.770 7.917 Ammonia (as N) 2,852.000 1,254.000 Cobalt 2.996 1.498 Total suspended solids 321.000 256.800 pH 1 1 1 Within the range of 7.5 to 10.0 at all times.
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