An industrial user shall provide wastewater treatment. Such treatment shall comply with this chapter and shall also achieve compliance with all applicable federal, state, and local pretreatment standards and requirements, within the time limitations specified by the EPA, the Washington State Department of Ecology, or the control authority, whichever is more stringent. The wastewater treatment can be obtained by physical process, biological process, or by other process or means, except as prohibited by 40 CFR Section 403.6(d). Appropriate pretreatment technology includes control equipment, such as equalization tanks or facilities, for protection against surges or slug discharges that might interfere with or otherwise be incompatible with the POTW. Where wastewater from a regulated process is mixed in an equalization facility with unregulated wastewater or with wastewater from another regulated process, the effluent from the equalization facility must meet an adjusted pretreatment limit calculated in accordance with 40 CFR Section 403.6(e). Any pretreatment facilities necessary for compliance with this chapter shall be provided, operated and maintained at the industrial user's expense and satisfy applicable requirements for content, review and acceptance of engineering reports, plans and specifications for construction and modification of pretreatment facilities, including an operation and maintenance manual as set forth in Chapter 173-240 WAC.
The control authority may, in its sole discretion, waive the requirement for a three-step submission of documents and require instead conceptual plans with such information from the engineering report and operation manual that the control authority determines will demonstrate compliance with this chapter. Construction or modification of a pretreatment facility shall not commence until engineering reports, plans and specifications for the project have been submitted to and approved by the control authority. Unless waived by the control authority, such reports shall be prepared under the supervision of, and bear the seal of, a professional engineer licensed in accordance with Chapter 18.43 RCW. The review and acceptance of the engineering reports, plans and specifications, and operation and maintenance manual, shall in no way relieve the industrial user from its obligation to comply with the provisions of this chapter, including modification of its pretreatment facility as necessary to produce a discharge acceptable to the control authority under the provisions of this chapter.
(Ord. 1685 § 3 (Exh. A), 2022)
Industrial users shall, at all times, properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the industrial user. This provision requires the operation of back-up or auxiliary facilities or similar systems which are installed by an industrial user when the operation is necessary to achieve or assure compliance with conditions of its industrial wastewater discharge permit. Calibration of meters and monitoring equipment shall be performed in accordance with manufacturer specifications.
(Ord. 1685 § 3 (Exh. A), 2022)
The control authority may require an industrial user to install, at the industrial user's expense, monitoring facilities or equipment that allow for the representative sampling and accurate observation of wastewater discharges. Whether constructed on public or private property, the monitoring facilities shall be constructed in accordance with the control authority's requirements and all applicable city construction standards and specifications. Monitoring equipment and structures shall be maintained in proper working order, calibrated as required by manufacturer's specifications, and kept safe and accessible at all times for inspection by the control authority. The monitoring equipment shall be located and maintained on the industrial user's premises outside of the building footprint unless otherwise approved by the control authority. The monitoring facility shall include an enclosure that can be locked during sampling or monitoring or other inspection with a lock provided by the control authority. When such a location would be impractical, the control authority may allow such facility to be constructed in the public street or easement area, with the approval of the city department having jurisdiction over street occupancy according to such terms and conditions as it may impose. No industrial user shall cover any manhole, sewer cleanout, or other openings in the wastewater collection system with earth, paving, or otherwise render it inaccessible.
(Ord. 1685 § 3 (Exh. A), 2022)
The control authority may require an industrial user to provide confirmation that treatment facility operators have been properly trained regarding treatment facility operation and maintenance (O&M) practices.
(Ord. 1685 § 3 (Exh. A), 2022)
The control authority may require an industrial user to restrict discharge during peak flow periods, designate that certain wastewater be discharged to the municipal wastewater system at designated locations, relocate and/or consolidate points of discharge, separate domestic wastestreams from industrial wastestreams, and require such other conditions as may be necessary to protect the POTW.
(Ord. 1685 § 3 (Exh. A), 2022)
The control authority may require any industrial user discharging to the municipal wastewater system to install and maintain, on its property and at its expense, a suitable storage and flow control facility to ensure equalization of flow. An industrial wastewater discharge permit may be issued solely for flow equalization.
(Ord. 1685 § 3 (Exh. A), 2022)
When more than one industrial user is able to discharge into a common service line, the control authority may require installation of separate monitoring equipment or structures for each industrial user.
(Ord. 1685 § 3 (Exh. A), 2022)
If the control authority determines an industrial user is required to measure and report: (a) wastewater flow; (b) discharge process wastewaters necessitating continuous pH measurement; or (c) discharge wastewater that may contain flammable substances or other pollutants of concern, the control authority may require the industrial user to install and maintain, at the industrial user's expense, approved meters and equipment.
(Ord. 1685 § 3 (Exh. A), 2022)
No person shall install, change, bypass, adjust, remove, alter, or otherwise tamper with any water metering device or any piping arrangement connected to a metering device to show the quantity of water used at or discharged from the facility is more or less than the actual quantity used or discharged.
(Ord. 1685 § 3 (Exh. A), 2022)