40 C.F.R. § 421.104

Current through September 30, 2024

Section 421.104 - Standards of performance for new sources

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

(a) Subpart J-Tungstic Acid Rinse.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead	11.490	5.333
Zinc	41.850	17.230
Ammonia (as N)	5,469.000	2,404.000
Total suspended solids	615.400	492.300
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(b) Subpart J-Acid Leach Wet Air Pollution

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungstic acid (as W) produced
Lead	1.003	0.466
Zinc	3.653	1.504
Ammonia (as N)	477.400	209.900
Total suspended solids	53.720	42.970
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(c) Subpart J-Alkali Leach Wash.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead	0.000	0.000
Zinc	0.000	0.000
Ammonia (as N)	0.000	0.000
Total suspended solids	0.000	0.000
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(d) Subpart J-Alkali Leach Wash Condensate.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of sodium tungstate (as W) produced
Lead	5.372	2.494
Zinc	19.570	8.057
Ammonia (as N)	2,557.000	1,124.000
Total suspended solids	287.800	229.600
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(e) Subpart J-Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead	24.780	11.500
Zinc	90.240	37.160
Ammonia (as N)	11,790.000	5,185.000
Total suspended solids	1,327.000	1,062.000
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(f) Subpart J-Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of ammonium tungstate (as W) produced
Lead	24.780	11.500
Zinc	90.240	37.160
Ammonia (as N) (2)	11,790.000	5,185.000
Total suspended solids	1,327.000	1,062.000
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

² The new source standard for this pollutant does not apply if (a) the mother liquor feed to the ion exchange process or the raffinate from the ion exchange process contains sulfates at concentrations exceeding 1000 mg/l; (b) this mother liquor or raffinate is treated by ammonia steam stripping; and (c) such mother liquor or raffinate is not commingled with any other process or nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J-Calcium Tungstate Precipitate Wash.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of calcium tungstate (as W) produced
Lead	20.670	9.594
Zinc	75.280	31.000
Ammonia (as N)	9,838.000	4,325.000
Total suspended solids	1,107.000	885.600
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(h) Subpart J-Crystallization and Drying of Ammonium Paratungstate.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of ammonium paratungstate (as W) produced
Lead	0.000	0.000
Zinc	0.000	0.000
Ammonia (as N)	0.000	0.000
Total suspended solids	0.000	0.000
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(i) Subpart J-Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pound per million pounds) of tungstic oxide (as W) produced
Lead	0.773	0.359
Zinc	2.817	1.160
Ammonia (as N)	368.200	161.900
Total suspended solids	41.430	33.150
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(j) Subpart J-Ammonium Paratungstate Conversion to Oxides Water of Formation.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungstic oxide (as W) produced
Lead	0.018	0.008
Zinc	0.064	0.026
Ammonia (as N)	8.398	3.692
Total suspended solids	0.945	0.756
pH	(1)	(1)

¹ Within the range of 7.0 to 10.0 at all times.

(k) Subpart J-Reduction to Tungsten Wet Air Pollution Control.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungsten metal produced
Lead	.862	.400
Zinc	3.142	1.294
Ammonia (as N)	410.600	180.500
Total suspended solids	46.200	36.960
pH	(1)	(1)

¹Within the range of 7.0 to 10.0 at all times.

(l) Subpart J-Reduction to Tungsten Water of Formation.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungsten metal produced
Lead	.137	.064
Zinc	.499	.205
Ammonia (as N)	65.190	28.660
Total suspended solids	7.335	5.868
pH	(1)	(1)

¹Within the range of 7.0 to 10.0 at all times.

(m) Subpart J-Tungsten Power Acid Leach and Wash.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungsten metal produced
Lead	.672	.312
Zinc	2.448	1.008
Ammonia (as N)	319.900	140.700
Total suspended solids	36.000	28.800
pH	(1)	(1)

¹Within the range of 7.0 to 10.0 at all times.

(n) Subpart J-Molybdenum Sulfide Precipitation Wet Air Pollution Control.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of tungsten metal produced
Lead	.00	.000
Zinc	.000	.000
Ammonia (as N)	.000	.000
Total suspended solids	.000	.000
pH	(1)	(1)

¹Within the range of 7.0 to 10.0 at all times.

40 C.F.R. §421.104

49 FR 8812, Mar. 8, 1984, as amended at 53 FR 1709, Jan. 21, 1988