Regulations last checked for updates: Oct 18, 2024
Title 40 - Protection of Environment last revised: Oct 16, 2024
§ 421.80 - Applicability: Description of the primary zinc subcategory.
The provisions of this subpart are applicable to discharges resulting from the production of primary zinc by either electrolytic or pyrolytic means.
§ 421.81 - Specialized definitions.
For the purpose of this subpart:
(a) Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
(b) The term product shall mean zinc metal.
§ 421.82 - 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:
| Effluent characteristics
| Maximum for any 1 day
| Average of Daily values for 30 consecutive days shall not exceed
|
|---|
| (1) Metric Units (kg/kkg of product)
|
| (1) English Units (pounds per 1,000 pounds of product)
|
| TSS | 0.42 | 0.21
|
| As | 0.0016 | 0.0008
|
| Cd | 0.008 | 0.004
|
| Se | 0.08 | 0.04
|
| Zn | 0.08 | 0.04
|
| pH | (
1) | (
1)
|
§ 421.83 - 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) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.
| 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 |
(b) Subpart H—Preleach of Zinc Concentrates.
| 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 |
(c) Subpart H—Leaching Wet Air Pollution Control.
| 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 |
(d) Subpart H—Electrolyte Bleed Wastewater.
| 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 |
(e) Subpart H—Cathode and Anode Wash Wastewater.
| 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 |
(f) Subpart H—Casting Wet Air Pollution Control.
| 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 |
(g) Subpart H—Casting Contact Cooling.
| 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 |
(h) Subpart H—Cadmium Plant Wastewater.
| 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 |
§ 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.
| 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)
|
(b) Subpart H—Preleach of Zinc Concentrates.
| 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)
|
(c) Subpart H—Leaching Wet Air Pollution Control.
| 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)
|
(d) Subpart H—Electrolyte Bleed Wastewater.
| 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)
|
(e) Subpart H—Cathode and Anode Wash Wastewater.
| 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)
|
(f) Subpart H—Casting Wet Air Pollution Control.
| 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)
|
(g) Subpart H—Casting Contact Cooling.
| 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)
|
(h) Subpart H—Cadmium Plant Wastewater.
| 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)
|
§ 421.85 - 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 primary zinc process wastewater introduced into a POTW shall not exceed the following values:
(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.
| 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
|
| Zinc | 1.702 | .701 |
(b) Subpart H—Preleach of Zinc Concentrates.
| 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
|
| Zinc | .919 | .378 |
(c) Subpart H—Leaching Wet Air Pollution Control.
| 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
|
| Zinc | .000 | .000 |
(d) Subpart H—Electrolyte Bleed Wastewater.
| 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
|
| Zinc | .441 | .182 |
(e) Subpart H—Cathode and Anode Wash Wastewater.
| 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
|
| Zinc | .766 | .315 |
(f) Subpart H—Casting Wet Air Pollution Control.
| 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
|
| Zinc | .262 | .108 |
(g) Subpart H—Casting Contact Cooling.
| 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
|
| Zinc | .185 | .076 |
(h) Subpart H—Cadmium Plant Wastewater.
| 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
|
| Zinc | 6.295 | 2.592 |
§ 421.86 - 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 zinc process wastewaters introduced into a POTW shall not exceed the following values:
(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.
| 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
|
| Zinc | 1.702 | .701 |
(b) Subpart H—Preleach of Zinc Concentrates.
| 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
|
| Zinc | .919 | .378 |
(c) Subpart H—Leaching Wet Air Pollution Control.
| 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
|
| Zinc | .000 | .000 |
(d) Subpart H—Electrolyte Bleed Wastewater.
| 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
|
| Zinc | .441 | .182 |
(e) Subpart H—Cathode and Anode Wash Wastewater.
| 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
|
| Zinc | .766 | .315 |
(f) Subpart H—Casting Wet Air Pollution Control.
| 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
|
| Zinc | .262 | .108 |
(g) Subpart H—Casting Contact Cooling.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pounds per million pounds) of zinc cast
|
| Cadmium | 0.036 | 0.014
|
| Zinc | 0.185 | 0.076 |
(h) Subpart H—Cadmium Plant Wastewater.
| 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 | 0.494
|
| Zinc | 6.295 | 2.592 |
§ 421.87 - [Reserved]
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”);
33 U.S.C. 1311,
1314,
c,
e,
and, 1316 (b) and
c, 1317 (b) and
c,
1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.
cite as: 40 CFR 421.86