(A) Interceptor requirement. Grease, oil, sand and lint interceptors shall be provided when, in the opinion of the city, they are necessary to prevent grease in excessive amounts, flammable wastes, sand, lint, or other objectionable waste from entering the sanitary sewer system. All interceptors shall be of a type and capacity approved by the city and shall be located as to be easily and safely accessible for cleaning and inspection. All interceptors shall be continuously maintained in satisfactory and effective operation by the industrial user at the user's expense.
(B) Storage and disposal of grease and solids. Industrial users who generate waste grease should store it in grease containers and obtain a waste grease service company to disposal.
(C) Prohibition of sludge discharge. In no instance should waste grease that is generated at a facility be discharged to any drains or the interceptor.
(D) Recovery of maintenance expenses.
(1) Any maintenance expenses incurred by the city due to prohibited discharges from interceptors, or any other expenses attributable thereto, will be charged to the industrial user or users identified by the city as being in violation of the provisions contained herein and therefore solely responsible for, or responsible for contributing to, such unlawful discharge.
(2) Refusal by an industrial user to reimburse the city for maintenance expenses shall constitute a violation of the provisions contained herein and may result in civil action or severance of the user's water supply.
(E) Pumping schedules. Interceptors should be pumped at a frequency (a minimum of every three months and a maximum of every six months) that will eliminate the possibility of intercepted waste entering the sanitary sewer system. The amount of waste that may be accumulated in an interceptor prior to pumping is dependent upon the loading of the interceptor and the impact that industries in a particular service area, as a whole, may have on the POTW.
(F) Disposal of wastes from interceptors. Storage, handling, transportation and disposal of all wastes from interceptors shall be performed in accordance with applicable federal, state, and local regulations that pertain to the type and/or class of waste. Materials removed from waste interceptors must be disposed of at legally designated locations for those specific type wastes. Failure to dispose of waste properly may result in civil action by the city.
(G) Records.
(1) Transportation and disposal of waste from interceptors shall be documented by means of a liquid waste manifest.
(2) A copy of all manifests signed by the transporter shall be maintained at the site of the interceptor for a period of three years. Manifests must be available to the city at all times.
(3) A copy of manifests signed by the disposal company shall be mailed the city pretreatment coordinator at least quarterly.
(4) Failure of an industrial user to obtain a manifest from the transporter may result in a fine of not less than $100 nor more than $200 per violation.
(5) Failure of an industrial user to obtain a copy of a liquid waste manifest signed by the disposal company, at the city's request, or the inability of the user to produce evidence that a request for the document has been made and follow-up action has been taken to assure proper execution and routing of manifests in the future may result in a fine of not less than $100 nor more than $200 per violation.
(H) Inspections.
(1) Periodic inspections of interceptors will be conducted by the city's pretreatment department; however, it is the responsibility of the industrial users to assure that interceptors are properly maintained.
(2) Interceptors which are located in parking lots or other areas where vehicles may reasonably be expected to be parked must be protected by a permanent barrier, railing, or other means, at the owner's expense, if it is determined necessary by the pretreatment department to ensure continued and uninterrupted access to the interceptor.
(3) If at any time, as the result of an inspection, the pretreatment department determines that the condition of an interceptor is such that it has the potential to adversely affect the sewerage system, the Pretreatment Department shall request that the interceptor be pumped within a specified period of time.
(4) Failure to comply with a request to pump an interceptor within a given period of time constitutes a violation of the provisions contained herein and may result in civil action by the city and/or a fine of not less than $200 nor more than $500 per day of violation. Prolonged negligence by a user in having an interceptor pumped may result in the city engaging the services of a waste hauler to pump the interceptor. If such situation occurs, the city's cost for having the interceptor pumped will be passed on to the user, in addition to the appropriate fine.
(I) Permitting.
(1) Industrial users who, at the city's discretion, receive interceptor discharge permits will be classified as “non-significant” industrial users.
(2) Interceptor discharge permits shall be issued to industrial users who the city determines have a potential to adversely affect the city's POTW due to any of the following:
(a) The volume of objectionable waste generated that must be removed prior to discharging into the POTW;
(b) The adverse impact that waste from a heavy industrial area, as a whole, may have on the city's collection system;
(c) A facility's previous history of prohibited discharge violations; or
(d) The use of microorganisms as a means of reducing interceptor pumping frequencies.
(3) Interceptor discharge permits shall specify the minimum frequency at which users must have wastes removed from their interceptors; however, it is the responsibility of the user to have wastes removed more frequently than specified in the permit during situations when excessive waste is generated.
(4) The permitted user must give the pretreatment department an advanced notice when unscheduled pumping is required due to excessive waste loading.
(5) Interceptor discharge permits may be modified or terminated when deemed necessary by the pretreatment department.
(6) Requests for permit modification, revocation, or termination by the user must be submitted in writing to the city Director of Public Works.
(7) Industrial users who are permitted due to a request to use microorganisms as a means of reducing pumping frequency will be required to have their interceptors inspected by the Pretreatment Department at a frequency to be specified by the Pretreatment Coordinator. The cost of inspections will be passed on to the industrial user.
(J) Enforcement of interceptor requirements. Enforcement of the provisions of this section shall also be in accordance with the provisions of § 53.165, enforcement, with the exception of “civil penalties.” Civil penalties for violations of the provisions of this section shall not exceed $500 per day for each offense. Each day on which a violation shall occur or continue shall be deemed a separate and distinct offense. In addition to the penalties provided herein, the city may recover other expenses of litigation by appropriate suit at law against the person found to have violated this section or the orders, rules, regulations and permits issued hereunder.
(K) Construction and operation and maintenance of interceptors.
(1) Should the city determine that an interceptor is required at a facility or that an existing interceptor needs to be upgraded, the city may request construction accordingly.
(2) Should construction be required, the industrial user shall submit a construction schedule to the pretreatment department within 60 days from notification of the required construction. The schedule shall include the name, address, and telephone number of the plumber who will do the work and the dates that installation will commence and be completed.
(3) Proper authorization must also be obtained from the city's building inspection department. Reconstruction of existing facilities shall be in accordance with the requirements of Chapter 15 of the city's plumbing code.
(4) Failure to comply with any of the above requirements may result in severance of water service or civil action by the city.
(L) Grease trap additives.
(1) The city prohibits the use of emulsifying agents and the sole use of enzymes, which have not proven to be effective in the elimination of oil and grease. Industrial and or commercial users who intend to use microorganisms as a means of reducing grease in interceptors must first request an industrial user interceptor permit from the city and provide the city with technical data concerning the type of microorganism to be used. Those users who were using microorganisms prior to adoption of this chapter must apply for a permit and provide the required technical data within 60 days of the effective date of this chapter. The use of microorganisms does not eliminate the need to pump grease from interceptors. Grease trap pumping frequencies will be based upon solids accumulation in the trap.
(2) The pretreatment department has the authority to prohibit the use of any particular type of microorganism, or microorganisms as a whole, if there is reason to believe that the use of such additives may result in an adverse impact on the POTW.
(3) Industrial users who use microorganisms must maintain records at the facility which indicates the most recent date of application, the volume added, and the depth of the grease at the time of the application. These records must be maintained at the site for a period of one year and the information must be available to the city at all times. Failure to maintain this information at the site may result in a fine of not less than $100 nor more than $200 per violation.
(Ord. 17-1121, passed 11-21-2017)