(a) 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.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
|
|
|
|---|
| | Milligrams per liter (mg/l)
|
| Chromium | 0.42 | 0.17
|
| Lead | 0.15 | 0.13
|
| Nickel | 1.41 | 1.00
|
| Zinc | 1.33 | 0.56 |
(b) In cases where POTW find it necessary to impose mass effluent pretreatment standards the following equivalent mass standards are provided:
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| Metal preparation
| Coating operation
| Metal preparation
| Coating operation
|
|---|
| | Metric units—mg/m
2 of area processed or coated
|
| Chromium | 16.82 | 0.53 | 6.81 | 0.22
|
| Lead | 6.01 | 0.19 | 5.21 | 0.16
|
| Nickel | 56.5 | 1.78 | 40.1 | 1.26
|
| Zinc | 53.3 | 1.68 | 22.5 | 0.71
|
| | English units—lbs/1 million ft
2 of area processed or coated
|
| Chromium | 3.45 | 0.11 | 1.4 | 0.05
|
| Lead | 1.23 | 0.04 | 1.07 | 0.03
|
| Nickel | 11.6 | 0.37 | 8.20 | 0.26
|
| Zinc | 10.9 | 0.35 | 4.6 | 0.15 |
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 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) (the “Act”);
33 U.S.C. 1311,
1314,
c,
e, 1316 (b) and
c, 1317 (b) and
c,
and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217
source: 47 FR 53184, Nov. 24, 1982, unless otherwise noted.
cite as: 40 CFR 466.14