Substance
|
Maximum Effluent Concentration Limit2
(mg/l)
| |
---|---|---|
Arsenic
|
0.1
| |
Barium
|
4.0
| |
Cadmium
|
0.2
| |
Chromium (hex)
|
0.2
| |
Chromium (tot)
|
2.0
| |
Copper
|
1.0
| |
Cyanide (complex)
|
1.0
| |
Cyanide (free)
|
2.0
| |
Fluorides
|
5.0
| |
Gold
|
0.2
| |
Iron
|
5.0
| |
Lead
|
0.1
| |
Manganese
|
5.0
| |
Mercury
|
0.05
| |
Nickel
|
2.0
| |
Phenol
|
2.0
| |
Selenium
|
0.2
| |
Silver
|
0.2
| |
Sulfides
|
3.0
| |
Zinc
|
1.0
| |
Total toxic organics
|
1.0
| |
BOD5
|
250
| |
Suspended solids
|
300
| |
COD
|
350
|
NOTES:
| |
---|---|
1 Except for chromium (hex), all concentrations
listed for metallic substances shall be "total metal," which shall be defined
as the value measured in a sample acidified to a pH value of two or less,
without prior filtration.
| |
2 As determined on a grab sample taken of
the user's discharge at any time during the daily operational and/or
production period.
|