A. Whenever deemed necessary, the director may require users to restrict their discharge during peak flow periods at the POTW, 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/or determine the user’s compliance with the requirements of this chapter.

B. When determined necessary by the director, each user discharging into the POTW shall install and maintain, on his property and at his expense, a suitable storage and flow-control facility to ensure equalization of discharge flow. The director may require the facility to be equipped with alarms and a rate-of-discharge controller, the regulation of which shall be determined by the director. A wastewater discharge approval may be issued solely for flow equalization.

C. Grease, oil, and sand interceptors shall be provided when, in the opinion of the director, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand; except that such interceptors shall not be required for domestic users. All interception units shall be of a type and capacity approved by the director and shall be so located as to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the user at his expense.

D. Users with the potential to discharge flammable substances will be required to install and maintain an approved combustible gas detection meter.

E. Best Management Practices (BMPs). Users shall be subject to BMPs required by categorical pretreatment standards, state or local laws, or to meet local limits. The director may establish additional BMPs for particular groups of users. BMPs may include, but are not limited to, types or methods of pretreatment technology to be used, methods of source control, minimum maintenance requirements, spill prevention practices, or other requirements as deemed necessary.

F. The director may immediately halt or prevent any discharge of pollutants to the wastewater collection system which reasonably appears to present an imminent endangerment to the health or welfare of persons, the environment, or operation of the POTW and/or collection system. In such cases, the director will provide the user advance notice if possible, but shall not delay a response to imminent endangerment. Any user causing the director to exercise this action shall be responsible for reimbursement of all related costs to the city.

G. The director, based on the determination that such devices are necessary for implementation of pretreatment requirements, may require a user to install, operate, and maintain on their property or in an easement and at their expense any of the following devices:

H. Users installing any of the devices in subsections (G)(1) through (G)(7) of this section shall demonstrate that they are of the type and capacity approved by the director, must meet applicable building and plumbing codes, and conform to any separate requirements established by the city such as BMPs. Users shall locate these units in areas that are easily accessible for cleaning by the user and inspection by the director. Users shall be responsible for all cleaning, repair and/or calibration (per manufacturer’s recommendations) of such devices. Users may be required to maintain records and/or submit reports to the director to show units are being maintained and in working order. [Ord. 2020-07-016 § 1; Ord. 2019-11-032 § 1].