40 CFR 421.245 - Pretreatment standards for existing sources.

§ 421.245 Pretreatment standards for existing sources.
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in secondary nickel process wastewater introduced into a POTW must not exceed the following values:
(a) Slag reclaim tailings.
PSES for the Secondary Nickel Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of slag input to reclaim process
Chromium (total) 5.653 2.313
Copper 24.410 12.850
Nickel 24.670 16.320
(b) Acid reclaim leaching filtrate.
PSES for the Secondary Nickel Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of acid reclaim nickel produced
Chromium (total) 2.198 0.899
Copper 9.491 4.995
Nickel 9.590 6.344
(c) Acid reclaim leaching belt filter backwash
PSES for the Secondary Nickel Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of acid reclaim nickel produced
Chromium (total) 0.528 0.216
Copper 2.278 1.199
Nickel 2.302 1.523

Title 40 published on 2013-07-01

no entries appear in the Federal Register after this date.

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