Current through Register Vol. 49, No. 27, December 30, 2024
Subpart 1.
Notice of potential problems; slug discharges.
All industrial users shall notify the receiving POTW
immediately of all discharges by the industrial user that could cause problems
to the POTW plant, including any slug discharge.
Subp. 2.
Notification and repeat
sampling in case of violation.
If sampling performed by an industrial user indicates a
violation, the industrial user shall notify its control authority, and its
receiving POTW if the POTW is not the control authority, within 24 hours of
becoming aware of the violation. The industrial user shall repeat the sampling
and analysis and submit the results of the repeat analysis to its control
authority within 30 days after becoming aware of the violation. When the POTW
has performed the sampling and analysis in lieu of the industrial user, the
POTW shall perform the repeat sampling and analysis unless it notifies the
industrial user of the violation and requires the industrial user to perform
the repeat analysis. Unless directed by the POTW authority, resampling is not
required if:
A. the POTW performs
sampling at the industrial user at a frequency of at least once per month;
or
B. the POTW performs sampling at
the industrial user between the time when the initial sampling was conducted
and the time when the industrial user or the POTW receives the results of the
sampling.
Subp. 3.
Notification of changed discharge.
An industrial user shall promptly notify the receiving POTW in
advance of any substantial change in the volume or character of pollutants in
the industrial user's discharge, including the listed or characteristic
hazardous wastes for which the industrial user has submitted initial
notification under subpart
4. When the agency is the
control authority, the industrial user shall also notify the agency.
Subp. 4.
Sewered hazardous
waste notification.
A. If an industrial
user discharges 15 kilograms or more of a substance in any month into a POTW
that, if otherwise disposed of, would be a hazardous waste under chapter 7045,
or if an industrial user discharges any amount of a substance into a POTW that,
if otherwise disposed of, would be an acute hazardous waste under chapter 7045,
the industrial user shall submit a written sewered hazardous waste notification
to the receiving POTW, the Environmental Protection Agency regional waste
management division director, and the agency hazardous waste program. Any
notification under this subpart need be submitted only once for each hazardous
waste discharged. However, notifications of changed discharges must be
submitted under subpart
3.
B.
(1) A
sewered hazardous waste notification must include the name of the hazardous
waste as set forth in chapter 7045, the Environmental Protection Agency
hazardous waste number, and the type of discharge (continuous, batch, or
other).
(2) If the industrial user
discharges more than 100 kilograms of the waste per calendar month to the
receiving POTW, the notification shall also contain the following information
to the extent the information is known and readily available to the industrial
user:
(a) an identification of the hazardous
constituents contained in the wastes;
(b) an estimation of the mass and
concentration of the constituents in the waste stream discharged during that
calendar month; and
(c) an
estimation of the mass of constituents in the waste stream expected to be
discharged during the following 12 months.
(3) The industrial user shall also certify
that it has a program in place to reduce the volume and toxicity of hazardous
wastes generated to the degree it is determined to be economically
practical.
C. Industrial
users shall provide the sewered hazardous waste notification no later than 180
days after the discharge of:
(1) more than 15
kilograms of nonacute hazardous wastes in a calendar month; or
(2) any quantity of acute hazardous wastes as
specified in part
7045.0135, subparts
2 and
4.
In the case of any new regulations under chapter 7045 or United
States Code, title 42, section 6921, identifying additional characteristics of
hazardous waste or listing any additional substance as a hazardous waste, the
sewered hazardous waste notification is due within 90 days of the effective
date of the regulations.
D. The notification requirement in this
subpart does not apply to pollutants already reported in a baseline monitoring
report, 90-day compliance report, or periodic report on continued compliance as
required in parts
7049.0500 to
7049.0570.
Statutory Authority: MS s
115.03
