Wis. Admin. Code Department of Natural Resources § NR 257.04 - Monitoring and reporting requirements
Current through March 28, 2022
The following special monitoring and reporting requirements apply to all facilities subject to this chapter:
(1) Analyses for cyanide are not required
when both of the following conditions are met:
(a) The first wastewater sample of the
calendar year has been analyzed and found to contain less than 0.07
mg/1.
(b) The owner or operator of
the aluminum forming facility certifies in writing to the department or control
authority that cyanide is not and will not be used in the aluminum forming
process.
(2) As an
alternative pretreatment monitoring procedure, the POTW user may measure and
limit oil and grease to the levels shown in the pretreatment standards in lieu
of measuring and regulating TTO.
(3) Compliance with the maximum monthly
average effluent limitations and pretreatment standards is required regardless
of the number of samples analyzed and averaged. The maximum monthly average
effluent limitations and pretreatment standards shall be the basis for monthly
average discharge limits in direct discharge permits and for pretreatment
standards.
Notes
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