An industrial user may allow any bypass to occur
which does not cause pretreatment standards or requirements to be
violated, but only if it also is for essential maintenance to assure
efficient operation. These bypasses are not subject to the provision
of Subsections A and B and of this section.
A. Notice.
(1) If an industrial users knows in advance of the need
for a bypass, it shall submit prior notice to the control authority,
if possible at least 10 days before the date of the bypass.
(2) An industrial user shall submit oral notice of an
unanticipated bypass that exceeds applicable pretreatment standards
to the control authority within 24 hours from the time the industrial
user becomes aware of the bypass. A written submission shall also
be provided within five days of the time the industrial user becomes
aware of the bypass. The written submission shall contain a description
of the bypass and its cause; the duration of the bypass, including
exact dates and times and if the bypass has not been corrected; the
anticipated time it is expected to continue; and steps taken or planned
to reduce, eliminate and prevent reoccurrence of the bypass. The control
authority may waive the written report on a case-by-case basis if
the oral report has been received within 24 hours.
B. Prohibition of bypass.
(1) Bypass is prohibited and the control authority may
take enforcement action against an industrial user for a bypass unless:
(a)
Bypass was unavoidable to prevent loss of life,
personal injury or severe property damage;
(b)
There were not feasible alternatives to the
bypass, such as the use of auxiliary treatment facilities, retention
of untreated wastes or maintenance during normal period of equipment
downtime. This condition is not satisfied if adequate backup equipment
should have been installed in the exercise of reasonable engineering
judgment to prevent a bypass which occurred during normal periods
of equipment downtime or preventative maintenance; and
(c)
The industrial user submitted notices as required under Subsection
A of this section.
(2) The control authority may approve an anticipated bypass, after considering its adverse effects, if the control authority determines that it will meet the three conditions listed in Subsection
B(1) of this section.
An "upset" means an exceptional incident in
which there is unintentional and temporary noncompliance with Categorical
Pretreatment Standards because of factors beyond the reasonable control
of the industrial user. An upset does not include noncompliance to
the extent caused by operational error, improperly designed treatment
facilities, inadequate treatment facilities, lack of preventative
maintenance or careless or improper operation. An upset can be used
as an affirmative defense to an action brought for noncompliance with
Categorical Pretreatment Standards, provided that the industrial user
meets certain conditions. An industrial user who wishes to establish
the affirmative defense of upset must demonstrate, through properly
signed, contemporaneous operating logs or other relevant evidence,
that:
A. An upset occurred and the industrial user can identify
the cause or causes.
B. The facility was at the time being operated in a prudent
and workmanlike manner and in compliance with applicable operation
and maintenance procedures.
C. The industrial user has submitted the following information
to the City within 24 hours of becoming aware of the upset (if this
information is provided orally, a written submission must follow within
five days): a description of the indirect discharge and cause of noncompliance;
the period of noncompliance, including exact dates and times, or if
not corrected, the anticipated time the noncompliance is expected
to continue; steps being taken or planned to reduce, eliminate and
prevent recurrence of the noncompliance.
D. In any enforcement proceeding the industrial user
seeking to establish the occurrence of an upset shall have the burden
of proof.
E. Industrial users will have the opportunity for judicial
determination on any claim of upset only in an enforcement action
brought for noncompliance with categorical pretreatment standards.
F. The industrial user shall control production of all
discharges to the extent necessary to maintain compliance with categorical
pretreatment standards upon reduction, loss or failure of its treatment
facility until the facility is restored or an alternative method of
treatment is provided. This requirement applies in the situation where,
among other things, the primary source of power of the treatment facility
is reduced, lost or fails.
Information and data about a user obtained from
reports, questionnaires, permit applications, permits and monitoring
programs and from inspections shall be made available to the public
unless the user specifically requests and is able to demonstrate to
the satisfaction of the City that the release of such information
would divulge information, processes or methods of production entitled
to protection as trade secrets of the user. When requested by the
person furnishing the report, the portions of a report which might
disclose trade secrets or secret processes shall not be made available
to the general public for inspection except upon written request.
Confidential portions of a report shall be made available for use
by the state or EPA in judicial review or enforcement proceedings
involving the person or company furnishing the report. Wastewater
constituents and characteristics shall not be recognized as confidential.