Effluent Concentration Limit (mg/l)
| |||
Substance1
|
Allowable Average Daily2
|
Allowable Maximum Instantaneous3
| |
Arsenic
|
0.2
|
0.4
| |
Barium
|
4.0
|
8.0
| |
Cadmium
|
0.4
|
0.8
| |
Chlorine
|
50
|
50
| |
Chromium (hex)
|
0.2
|
0.4
| |
Chromium (tot)
|
4.0
|
8.0
| |
Copper
|
0.8
|
1.6
| |
Cyanide (complex)
|
1.6
|
3.2
| |
Cyanide (free)
|
0.2
|
0.4
| |
Gold
|
0.4
|
0.8
| |
Lead
|
0.2
|
0.8
| |
Mercury
|
0.2
|
0.4
| |
Nickel
|
4.0
|
8.0
| |
Phenols, total
|
4.0
|
8.0
| |
Selenium
|
0.2
|
0.4
| |
Silver
|
0.2
|
0.4
| |
Sulfides
|
6.0
|
12.0
| |
Zinc
|
1.2
|
2.4
|
Notes:
| ||
1
|
Except for chromium (hex), all concentrations
listed for metallic substances shall be as "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 composite sample taken from
the user's daily discharge over a typical operational and/or production
day.
| |
3
|
As determined on a grab sample taken from the
user's discharge at any time during the daily operational and/or production
period.
|