Effluent Concentration Limit - mg/l
| ||
---|---|---|
Substance
(1)
|
Allowable Average Daily
(2)
|
Allowable Maximum Instantaneous
(3)
|
Arsenic
|
0.20
|
0.4
|
Cadmium
|
0.04
|
0.05
|
Chlorine
|
50.00
|
60.00
|
Chromium (hex)
|
0.20
|
0.40
|
Chromium (tot)
|
4.00
|
5.00
|
Copper
|
0.80
|
1.00
|
Cyanide (complex)
|
0.40
|
0.50
|
Cyanide (free)
|
1.60
|
2.00
|
Fluorides
|
12.00
|
14.00
|
Gold
|
0.20
|
0.40
|
Manganese
|
4.00
|
5.00
|
Mercury
|
0.20
|
0.40
|
Nickel
|
4.00
|
5.00
|
Phenols, total
|
4.00
|
6.00
|
Silver
|
0.20
|
0.40
|
Sulfides
|
6.00
|
8.00
|
Tin
| ||
Zinc
|
1.20
|
1.60
|
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 2 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.
|