Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 273 - Nonferrous metals forming and metal powders
Subchapter III - Nickel-Cobalt
Section NR 273.031 - Discharge prohibitions
Universal Citation: WI Admin Code ยง NR 273.031
Current through August 26, 2024
(1) Any facility subject to this subchapter may not discharge process wastewater pollutants from the following sources:
(a) Rolling spent neat
oils;
(b) Drawing spent neat
oils;
(c) Extrusion spent
lubricants;
(d) Forging spent
lubricants;
(e) Vacuum melting
steam condensate;
(f) Annealing and
solution heat treatment contact cooling water;
(g) Hydrostatic tube testing and ultrasonic
testing wastewater; and
(h)
Degreasing spent solvents.
(2) TUBE REDUCING SPENT LUBRICANTS.
(a) Tube reducing spent lubricant process
wastewater pollutants may not be discharged, except as provided in par.
(b).
(b) Tube reducing spent
lubricant process wastewater pollutants may be discharged, with no allowance
for any pollutants discharged, if the facility owner or operator demonstrates
according to pars. (c), (d), (e), and (f) that the concentrations of
nitrosamine compounds in the discharged wastewater do not exceed the following
levels:
|
Nitrosamine |
Maximum Concentration |
|
N-nitrosodimethylamine |
0.050 mg/l |
|
N-nitrosodiphenylamine |
0.020 mg/l |
|
N-nitrosodi-n-propylamine |
0.020 mg/l |
(c) For the demonstration required by par.
(b), the facility owner or operator shall use the analytical methods approved
by ch. NR 219, Table C.
(d) The
demonstration required by par. (b) shall be made once per month until the
demonstration has been made for all 3 nitrosamine compounds for 6 consecutive
months. After this time, the demonstration may be made once per quarter. If a
sample is found to contain any of the 3 nitrosamine compounds at concentrations
greater than those specified in par. (b), the actions set forth in par. (e)
shall be taken and the demonstration required by par. (b) shall be made once
per month until it has been made for all 3 nitrosamine compounds for 6
consecutive months.
(e) If sampling
results show that any of the 3 nitrosamine compounds is present in the process
wastewater at concentrations greater than those set forth in par. (b), the
facility owner or operator shall ensure that starting within 30 days of
receiving written notification of the sampling results no tube reducing spent
lubricant wastewater is discharged until one of the following conditions is
met:
1. The owner or operator performs a
subsequent analysis which demonstrates that the concentrations of 3 regulated
nitrosamine compounds do not exceed the levels set forth in par. (b);
or
2. The owner or operator
substitutes a new tube reducing lubricant and thereafter complies with the
requirements of par. (d); or
3.
Determines the source of the pollutants whose concentration exceeded the level
set forth in par. (b) and demonstrates to the satisfaction of the permit
issuing authority that the source has been eliminated.
(f) The concentration limits specified in
par. (b) apply at the point of discharge from the tube reducing process.
However, sampling after the tube reducing wastewater has been commingled with
other wastewaters is permitted if 2 conditions are met:
1. Any dilution caused by the other
wastewaters is accounted for when determining the appropriate allowable
discharge concentration; and
2. An
analytical method of sufficient sensitivity is used to measure the levels of
each of the 3 nitrosamine compounds in the wastewater being sampled.
Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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