40 C.F.R. § 421.84

Current through September 30, 2024

Section 421.84 - Standards of performance for new sources

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

(a) Subpart H-Zinc Reduction Furnace 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 zinc reduced
Cadmium	.334	.134
Copper	2.135	1.018
Lead	.467	.217
Zinc	1.702	.701
Total suspended solids	25.020	20.020
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(b) Subpart H-Preleach of Zinc Concentrates.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of concentrate leached
Cadmium	.180	.072
Copper	1.153	.550
Lead	.252	.117
Zinc	.919	.378
Total suspended solids	13.520	10.810
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(c) Subpart H-Leaching 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 zinc processed through leaching
Cadmium	.000	.000
Copper	.000	.000
Lead	.000	.000
Zinc	.000	.000
Total suspended solids	.000	.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(d) Subpart H-Electrolyte Bleed Wastewater.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of cathode zinc produced
Cadmium	.086	.035
Copper	.553	.264
Lead	.121	.056
Zinc	.441	.182
Total suspended solids	6.480	5.184
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(e) Subpart H-Cathode and Anode Wash Wastewater.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of cathode zinc produced
Cadmium	.150	.060
Copper	.961	.458
Lead	.210	.098
Zinc	.766	.315
Total suspended solids	11.270	9.012
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(f) Subpart H-Casting 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 zinc cast
Cadmium	.051	.021
Copper	.329	.157
Lead	.072	.033
Zinc	.262	.108
Total suspended solids	3.855	3.084
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(g) Subpart H-Casting Contact Cooling.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of zinc cast
Cadmium	.036	.014
Copper	.232	.110
Lead	.051	.024
Zinc	.185	.076
Total suspended solids	2.715	2.172
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(h) Subpart H-Cadmium Plant Wastewater.

NSPS

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of cadmium produced
Cadmium	1.234	.494
Copper	7.899	3.765
Lead	1.728	.802
Zinc	6.295	2.592
Total suspended solids	92.570	74.050
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

40 C.F.R. §421.84

49 FR 8808, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 49 FR 29795, July 24, 1984