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§421.280 Applicability: Description of the secondary tantalum subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tantalum at secondary tantalum facilities.

§421.281 Specialized definitions.

For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

§421.282 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Tantalum alloy leach and rinse.

BPT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper438.100230.600
Lead96.85046.120
Nickel442.800292.900
Zinc336.700140.700
Tantalum103.800
Total suspended solids9,455.0004,497.000
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(b) Capacitor leach and rinse.

BPT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced from leaching
Copper38.38020.200
Lead8.4844.040
Nickel38.78025.650
Zinc29.49012.320
Tantalum9.090
Total suspended solids828.200393.900
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(c) Tantalum sludge leach and rinse.

BPT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper390.100205.300
Lead86.23041.060
Nickel394.200260.700
Zinc299.700125.200
Tantalum92.390
Total suspended solids8,417.0004,003.000
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(d) Tantalum powder acid wash and rinse.

BPT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper0.6650.350
Lead0.1470.070
Nickel0.6720.445
Zinc0.5110.214
Tantalum0.158
Total suspended solids14.3506.825
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(e) Leaching wet air pollution control.

BPT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper9.2724.880
Lead2.0500.976
Nickel9.3706.198
Zinc7.1252.977
Tantalum2.196
Total suspended solids200.10095.160
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

§421.283 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(a) Tantalum alloy leach and rinse.

BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper295.200140.700
Lead64.57029.980
Nickel126.80085.320
Zinc235.20096.850
Tantalum103.800

(b) Capacitor leach and rinse.

BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced from leaching
Copper25.86012.320
Lead5.6562.626
Nickel11.1107.474
Zinc20.6008.484
Tantalum9.090

(c) Tantalum sludge leach and rinse.

BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper262.800125.200
Lead57.48026.690
Nickel112.90075.960
Zinc209.40086.230
Tantalum92.390

(d) Tantalum powder acid wash and rinse.

BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper0.4480.214
Lead0.0980.046
Nickel0.1930.130
Zinc0.3570.147
Tantalum0.158

(e) Leaching wet air pollution control.

BAT Limitations for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper6.2462.977
Lead1.3660.634
Nickel2.6841.806
Zinc4.9782.050
Tantalum2.196

§421.284 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Tantalum alloy leach and rinse.

NSPS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper295.200140.700
Lead64.57029.980
Nickel126.80085.320
Zinc235.20096.850
Tantalum103.800
Total suspended solids3,459.0002,767.000
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(b) Capacitor leach and rinse.

NSPS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced from leaching
Copper25.86012.320
Lead5.6562.626
Nickel11.1107.474
Zinc20.6008.484
Tantalum9.090
Total suspended solids303.000242.400
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(c) Tantalum sludge leach and rinse.

NSPS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper262.800125.200
Lead57.48026.690
Nickel112.90075.960
Zinc209.40086.230
Tantalum92.390
Total suspended solids3,080.0002,464.000
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(d) Tantalum powder acid wash and rinse.

NSPS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper0.4480.214
Lead0.0980.046
Nickel0.1930.130
Zinc0.3570.147
Tantalum0.158
Total suspended solids5.2504.200
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

(e) Leaching wet air pollution control.

NSPS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper6.2462.977
Lead1.3660.634
Nickel2.6841.806
Zinc4.9782.050
Tantalum2.196
Total suspended solids73.20058.560
pH( 1)( 1)
1 Within the range of 7.5 to 10.0 at all times.

§421.285 [Reserved]

§421.286 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 secondary tantalum process wastewater introduced into a POTW shall not exceed the following values:

(a) Tantalum alloy leach and rinse.

PSNS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper295.200140.700
Lead64.57029.980
Nickel126.80085.320
Zinc235.20096.850
Tantalum103.800

(b) Capacitor leach and rinse.

PSNS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced from leaching
Copper25.86012.320
Lead5.6562.626
Nickel11.1107.474
Zinc20.6008.484
Tantalum9.090

(c) Tantalum sludge leach and rinse.

PSNS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper262.800125.200
Lead57.48026.690
Nickel112.90075.960
Zinc209.40086.230
Tantalum92.390

(d) Tantalum powder acid wash and rinse.

PSNS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of tantalum powder produced
Copper0.4480.214
Lead0.0980.046
Nickel0.1930.130
Zinc0.3570.147
Tantalum0.158

(e) Leaching wet air pollution control.

PSNS for the Secondary Tantalum Subcategory
Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of equivalent pure tantalum powder produced
Copper6.2462.977
Lead1.3660.634
Nickel2.6841.806
Zinc4.9782.050
Tantalum2.196

§421.287 [Reserved]

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