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(a) No user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement.
(b) The director may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
(Ord. 12274, § 1, passed 11-28-1995)
When an upset occurs, a 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 equipment until the equipment is restored or an alternative method of treatment is provided. The user must also report the upset in accordance with § 12.5-656. This requirement applies in the situation where, among other things, the primary source of power of the treatment equipment is reduced, lost or fails. A user may have an affirmative defense to upset under § 12.5-677.1 of this article only if the cause of action is brought in a federal court.
(Ord. 12274, § 1, passed 11-28-1995; Ord. 20043-01-2012, § 7, passed 1-10-2012)
(a) A user may allow any bypass to occur which does not cause pretreatment standards or requirements to be violated, but only if it is for essential maintenance to assure efficient operation. These bypasses are not subject to the provision of subsections (b) and (c) of this section.
(b) (1) If a user knows in advance of the need for a bypass, it shall submit prior notice to the director, at least ten days before the date of the bypass, if possible.
(2) A user shall submit oral notice to the director of an unanticipated bypass that exceeds applicable pretreatment standards within 24 hours from the time it becomes aware of the bypass. A written submission shall also be provided within five days of the time the 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 director may waive the written report on a case-by-case basis if the oral report has been received within 24 hours.
(c) (1) Bypass is prohibited, and the director may take an enforcement action against a user for a bypass, unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;
b. There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up 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 preventive maintenance; and
c. The user submitted notices as required under subsection (b) of this section.
(2) The director may approve an anticipated bypass, after considering its adverse effects, if the director determines that it will meet the three conditions listed in subsection (c)(1) of this section.
(Ord. 12274, § 1, passed 11-28-1995)
(a) Users shall provide wastewater treatment as necessary to comply with this article and shall achieve compliance with all categorical pretreatment standards, local limits and the prohibitions set out in Division 2 of this article within the time limitations specified by EPA or TCEQ, the state or the director, whichever is more stringent.
(b) The user shall provide, operate and maintain any facilities necessary for compliance at the user’s expense.
(c) The director may require a user to submit detailed plans describing such facilities and operating procedures to the director for review. The review of such plans and operating procedures shall in no way relieve the user from the responsibility of modifying such facilities as necessary to produce a discharge acceptable to the city under the provisions of this article.
(Ord. 12274, § 1, passed 11-28-1995; Ord. 15496, § 9, passed 3-25-2003)
(a) When necessary to prevent interference, pass through or sanitary sewer overflow the director may require users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage waste streams from industrial waste streams, and such other conditions as may be necessary to protect the POTW and to determine the user’s compliance with the requirements of this article.
(b) The director may require any person discharging into the POTW to install and maintain, on their property and at their expense, a suitable storage and flow-control structure to ensure equalization of flow. A wastewater discharge permit may be issued solely for flow equalization.
(c) A user shall provide grease traps and/or grit traps when, in the opinion of the city, they are necessary for the proper handling of wastewater.
(1) Grease and grit traps shall not be required for residential users.
(2) Grease and grit traps shall be of a type and a capacity approved by the city and shall be located so that they are easily accessible for cleaning, maintenance and inspection. The installation of grease traps and grit traps shall comply with the requirements of the plumbing code.
(3) Grease and grit traps shall be inspected, cleaned and repaired regularly, as needed, by the user at the user’s expense.
(4) Article VII of this chapter provides additional requirements for the use, servicing and maintenance of grease and grit traps. The wastes regulated by Article VII do not include hazardous waste and Class 1 nonhazardous industrial solid waste.
(d) The director may require users with the potential to discharge flammable substances to install and maintain an approved combustible gas detection meter.
(Ord. 12274, § 1, passed 11-28-1995)
The director shall evaluate whether each SIU needs an accidental discharge/slug discharge control plan or other action to control slug discharges at the time of SIU determination, or at least by the first year. All the activities associated with slug control evaluation and results are to be kept in the industrial user file. The director may require any user to develop, submit for approval and implement such a plan or take such other action that may be necessary to control slug discharges. Alternatively, the director may develop such a plan for any user. An accidental discharge/slug discharge control plan shall, at a minimum, include the:
(a) Description of discharge practices, including non-routine batch discharges;
(b) Description of stored chemicals;
(c) Procedures for immediately notifying the director of any accidental or slug discharge, as required by § 12.5-656 of this article; and
(d) Procedures as needed to prevent adverse impact from any accidental or slug discharge. Such procedures include, but are not limited to, inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents and/or measures and equipment for emergency response.
(Ord. 12274, § 1, passed 11-28-1995; Ord. 20043-01-2012, § 8, passed 1-10-2012)
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