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 |
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 421.85