Evanston |
Code of Ordinances |
Code of the City of Evanston, Wyoming |
Chapter 23. Utilities |
Article III. Wastewater |
§ 23-71. Pretreatment and monitoring facilities.
Latest version.
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A.Treatment required. An industrial user shall provide necessary wastewater treatment at the industrial user's expense as required to comply with this article and shall achieve compliance with all pretreatment standards and requirements within the time limitations specified by the EPA, the state, or the City, whichever is more stringent. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the City Engineer for review and shall be acceptable before construction of the facility. The review of such plans and operating procedures will in no way relieve the industrial user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the City under the provisions of this article.B.Wastewater discharge control. The City may require an industrial user to restrict discharge during peak flow periods, designate that certain wastewater be discharged only into specified 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 demonstrate the industrial user's compliance with the requirements of this article.C.Flow equalization. The City may require any industrial user discharging into the POTW to install and maintain, on their property and at their expense, a suitable storage and flow-control facility to ensure equalization of flow. An industrial discharge permit may be issued solely for flow equalization.D.Monitoring facilities. The City may require an industrial user to install at the industrial user's expense suitable monitoring facilities or equipment that allows 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 City's requirements and all applicable construction standards and specifications. Monitoring equipment and structures shall be maintained in proper working order and kept safe and accessible at all times to City personnel. The monitoring equipment shall be located and maintained on the industrial user's premises outside of the building unless otherwise approved by the City. When such a location would be impractical, the City may allow such facility to be constructed in the public street or easement area, with the approval of the agency having jurisdiction over such street or easement, and located so that it will not be obstructed by public utilities, landscaping or parked vehicles.E.Multitenant buildings. When more than one industrial user is able to discharge into a common service line, the City may require installation of separate monitoring equipment for each industrial user.F.Flow, pH and LEL meters. If the City determines that an industrial user needs to measure and report wastewater flow, discharge process wastewaters necessitating continuous pH measurement or discharge wastewater that may contain flammable substances the industrial user may be required to install and maintain, at the industrial user's expense, approved meters, structures and equipment.G.Unless approved by the City Engineer in writing, 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.H.Grease interceptors and oil and sand separators shall be installed when, in the opinion of the City Engineer, they are necessary for the proper handling of wastewater containing excessive amounts of these pollutants or other pollutants that are appropriately treated by these treatment systems. All treatment units shall be of a type and capacity approved by the City Engineer 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, at the owner's expense.