A. Requirements: All carwashes and garages shall have an interceptor meeting all applicable requirements of the City's Plumbing Code, the Idaho State Plumbing Code, or its successors. The WWTP Superintendent may require a carwash or garage to submit the calculations used in sizing the interceptor prior to approval.
All FSEs shall have a GCD(s) meeting all applicable requirements of the City's Plumbing Code, the Idaho State Plumbing Code, or its successors. The WWTP Superintendent may require a FSE to submit the calculations used in sizing the GCD prior to approval.
1. New Establishments: Facilities shall be required to install, operate, and maintain an interceptor in compliance with the requirements contained in this chapter. Interceptors shall be installed and registered prior to the issuance of a certificate of occupancy.
2. Existing Establishments: Existing facilities in operation as of the effective date of this chapter shall be allowed to operate and maintain their existing interceptors, provided such interceptors are in proper operating condition and not found to be contributing pollutants in quantities sufficient to cause line stoppages or to necessitate increased maintenance of the sanitary sewer system. If its interceptor is determined to be contributing pollutants in quantities sufficient to cause line stoppages or to necessitate increased maintenance of the sanitary sewer system, an existing facility shall comply with the requirements of this section. Existing facilities that are renovated or expanded shall install an interceptor meeting the requirements of this chapter. Interceptors shall be installed, inspected and registered as a condition of final approval of such renovation or expansion.
3. Retrofit: Any existing facility may be required to install or upgrade an interceptor if such facility is contributing pollutants to the sanitary sewer system, as determined by the WWTP Superintendent. Such devices shall be registered with the locality within thirty (30) days of installation.
B. Installation Of Interceptors: Interceptors shall be installed by a plumber licensed in the State of Idaho. Every interceptor shall be installed and connected so that it may be readily accessible for inspection, cleaning, and removal of the intercepted fats, oils, grease, food waste, sand, or grit at any time.
C. Maintenance Of Interceptors:
1. All interceptors shall be maintained at the owner's expense. Maintenance shall include the complete removal of all contents, including floating material, wastewater and settled solids. Decanting or discharging of removed waste back into the interceptor or private sewer line or into any portion of the sanitary sewer system is prohibited.
2. Grease interceptors shall be inspected a minimum of once per month by a qualified inspector, and shall be pumped out completely when the total accumulation of FOG, including floating solids and settled solids, reaches twenty-five percent (25%) of the overall liquid volume. At no time shall a GCD be cleaned less frequently than once every three (3) months unless allowed by the WWTP Superintendent for good cause shown. Approval will be granted on a case-by-case basis upon submittal of a request by the FSE, documenting reasons for the proposed frequency variance. Sand and grit separators shall be inspected at the frequency determined by the WWTP Superintendent, and shall be pumped out completely when the total accumulation of sand or grit reaches twenty-five percent (25%) of the overall liquid volume.
3. Grease traps and grease removal devices shall be opened, inspected and completely cleaned of food solids and FOG a minimum of once per week, unless allowed by the WWTP Superintendent for good cause shown. Approval will be granted on a case-by-case basis upon submittal of a request by the FSE documenting reasons for the proposed frequency variance. In no event shall the content of food solids and FOG exceed twenty-five percent (25%) of the overall liquid depth of the device.
4. The WWTP Superintendent may establish a more frequent cleaning schedule if the FSE is found to be contributing FOG in quantities sufficient to cause line stoppages or to necessitate increased maintenance of the sanitary sewer system.
D. Use Of Additives: The use of additives by FSEs including, but not limited to, products that contain solvents, emulsifiers, surfactants, caustics, acids, enzymes or bacteria are prohibited for use as grease management control; provided, however, that additives may be used to clean the FSE drain lines so long as the usage of such additives will not cause FOG to be discharged from the grease control device to the sanitary sewer system. The use of additives shall not be substituted for the maintenance procedures required by this section.
E. Waste Disposal:
1. Waste removed from a grease trap shall be disposed of in the solid waste disposal system or by a grease hauler certified by the City.
2. Waste removed from a grease interceptor shall be disposed of at a facility permitted to receive such wastes. No materials removed from interceptors shall be returned to any grease interceptor, private sewer line or into any portion of the City's sanitary sewer system.
3. FSEs shall dispose of yellow grease in a renderable FOG container, where contents will not be discharged to the environment. Yellow grease shall not be poured or discharged into the sanitary sewer system.
F. Inspection Of Interceptors: The WWTP Superintendent or his designee shall have the right of entry into any facility, during reasonable hours, for the purpose of making inspections, observation, measurements, sampling, testing or records review of the sanitary sewer system and interceptors installed in such building or premise to ensure that the facility is in compliance with this chapter. The owner or occupant may accompany the WWTP Superintendent or his designee. Operational changes, maintenance and repairs required by the WWTP Superintendent or his designee shall be implemented as noted in the written notice received by the facility.
G. Record Keeping:
1. Facility's with interceptors shall retain and make available for inspection and copying records of all cleaning and maintenance for the previous three (3) years for all interceptor devices. Cleaning and maintenance records shall include, at a minimum, the dates of cleaning/maintenance records, the names and business addresses of the company or person performing each cleaning/maintenance and the volume of waste removed in each cleaning. Such records shall be kept on site and shall be made immediately available to any employee of the Wastewater Department upon request.
2. FSEs shall retain and make available for inspection and copying records of yellow grease disposal for the previous three (3) years. Yellow grease disposal logs shall include, at a minimum, the dates of disposal, name and business address of the company or person performing the disposal and the volume of yellow grease removed in each cleaning. Such records shall be kept on site and shall be made immediately available to any employee of Wastewater Department upon request. (Ord. 2021-622, 9-2-2021)