Pretreatment Standards for the Electroplating Category
(40 CFR 413)
Facilities Discharging <10,000 gpd
|
Pollutant |
Daily Maximum, mg/l |
Max. 4 Day Avg, mg/l |
|
Cadmium |
1.2 |
0.7 |
|
Lead |
0.6 |
0.4 |
|
Cyanide (amenable) |
5.0 |
2.7 |
|
Total Toxic Organics |
4.57 |
-- |
Facilities Discharging >10,000 gpd
|
Pollutant |
Daily Maximum, mg/l |
Max. 4 Day Avg, mg/l |
|
Cadmium |
1.2 |
0.7 |
|
Chromium |
7.0 |
4.0 |
|
Copper |
4.5 |
2.7 |
|
Lead |
0.6 |
0.4 |
|
Nickel |
4.1 |
2.6 |
|
Zinc |
4.2 |
2.6 |
|
Silver |
1.2 |
0.7 |
|
Cyanide (total) |
1.9 |
2.7 |
|
Total Toxic Organics |
2.13 |
-- |
Facilities Discharging <10,000 gpd — Alternative Mass-Based Standards
|
Pollutant |
Daily Maximum, mg/m2of Operation |
Max. 4 Day Avg, mg/l |
|
Cadmium |
107 |
65 |
|
Chromium |
623 |
357 |
|
Copper |
401 |
241 |
|
Lead |
53 |
36 |
|
Nickel |
365 |
229 |
|
Zinc |
374 |
232 |
|
Cyanide (total) |
169 |
89 |
Pretreatment Standards for the Metal Finishing Category (40 CFR 433)
|
Pollutant |
Daily Maximum, mg/l |
Max. Monthly Avg, mg/l |
|
Cadmium |
0.69 |
0.26 |
|
Chromium |
2.77 |
1.71 |
|
Copper |
3.38 |
2.07 |
|
Lead |
0.69 |
0.43 |
|
Nickel |
3.98 |
2.38 |
|
Zinc |
2.61 |
1.48 |
|
Silver |
0.43 |
0.24 |
|
Cyanide (total) |
1.2 |
0.65 |
|
Total Toxic Organics |
2.13 |
-- |
Note: Pretreatment standards for new sources (PSNS) are identical to PSES except for the cadmium limitations which are 0.11 mg/l and 0.07 mg/l for the daily maximum and monthly average.