421.116—Pretreatment standards for new sources.

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 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of concentrate digested
Lead .174 .081
Zinc .635 .261
Ammonia (as N) 82.910 36.450
Fluoride 21.770 12.440
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of concentrate digested
Lead 2.592 1.203
Zinc 9.442 3.888
Ammonia (as N) 1,233.000 542.5000
Fluoride 324.000 185.100
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of concentrate digested
Lead .069 .032
Zinc .251 .103
Ammonia (as N) 32.790 14.420
Fluoride 8.610 4.920
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of concentrate digested
Lead 3.833 1.780
Zinc 13.960 5.750
Ammonia (as N) 1,825.000 802.200
Fluoride 479.100 273.800
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of concentrate digested
Lead 1.778 .826
Zinc 6.478 2.668
Ammonia (as N) 846.600 372.200
Fluoride 222.300 127.000
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tantalum salt dried
Lead 16.950 7.871
Zinc 61.750 25.430
Ammonia (as N) 8,070.000 3,548.000
Fluoride 2,119.000 1,211.000
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of columbium-tantalum oxide dried
Lead 1.076 .500
Zinc 3.919 1.614
Ammonia (as N) 512.200 225.200
Fluoride 134.500 76.840
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tantalum salt reduced
Lead 46.500 21.590
Zinc 169.400 69.750
Ammonia (as N) 22,140.000 9,732.000
Fluoride 5,813.000 3,322.000
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tantalum salt reduced
Lead .572 .266
Zinc 2.084 .858
Ammonia (as N) 272.400 119.700
Fluoride 71.510 40.860
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder washed
Lead 5.721 2.656
Zinc 20.840 8.582
Ammonia (as N) 2,724.000 1,198.000
Fluoride 715.200 408.700
PSNS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of columbium or tantalum cast or consolidated
Lead .000 .000
Zinc .000 .000
Ammonia (as N) .000 .000
Fluoride .000 .000
[49 FR 8817, Mar. 8, 1984, as amended at 50 FR 12253, Mar. 28, 1985]