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Where preliminary treatment or flow equalizing facilities and/or interceptors are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the user at his or her expense. Use of solvents and/or detergents and/or soaps, and/or degreasers is restricted to those levels which do not interfere with the proper functions of the interceptors. Interceptors like, but not limited to, grease traps, lint traps, or grit traps must have a watertight closure for their inspection covers. The covers themselves must be of a type to conform with the plumbing codes of the city’s Building Department.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
All users of the public sewers or sanitary sewers shall recognize and comply with the following:
(a) The economy and desirability of the combined treatment of industrial and commercial wastes and sanitary sewage is recognized. However, not all types and quantities of industrial and commercial wastes can be so treated. It shall be the policy to admit the types and quantities of industrial and commercial wastes that are not harmful or damaging to the structures, processes, or operation of the sewage works or are not specifically prohibited. In all cases, a special permit will be issued which will state specific conditions and requirements to be maintained. It is also recognized that to provide this service, additional facilities or treatment are required, and the cost of that must be borne by the user receiving the benefits.
(b) (1) Approval in advance by the city is required for the anticipated admission of industrial or commercial wastes into the public sewers having:
a. A five-day, 20° C. B.O.D. greater than 220 milligrams per liter, or chemical oxygen demand (COD) greater than 440 milligrams per liter.
b. A suspended solids content greater than 175 milligrams per liter.
c. An oil/grease content greater than 100 milligrams per liter.
(2) The user shall provide chemical analyses of the discharge according to a schedule to be established by the WWF and continued discharge shall be subject to approval of the city.
(c) Samples shall be collected so as to be a representative sample of the actual quality of the wastes. Samples for analysis may be collected by the user or his or her representative. Analysis shall be made by a registered sanitary engineer or graduate chemist whose qualifications are acceptable to the city or a wastewater treatment plant operator licensed and registered in the state, or a water testing laboratory certified by the state, using the laboratory methods for the examination of wastewater as set forth in 40 CFR 136, Chapter 62-160, F.A.C., and Chapter 62-625.600, F.A.C. (also see 26-158).
(d) When required by the Utilities Director, any establishment discharging industrial or commercial wastes into the sewer system shall construct and maintain at its sole expense a suitable control manhole or other suitable control station downstream from any treatment, storage, or other approved works to facilitate observation, measurement and sampling of all wastes including all domestic sewage from the establishment. The location and methods of construction of the control station shall be approved by the Utilities Director. The control station shall be maintained by the establishment so as to be safe and accessible at all times. If any establishment wishes to meter its waste discharge into the sewer system to verify in-product water retention or other uses of metered flow, they may, at their sole expense, install a flow-metering device as approved by the Utilities Director. The control station shall be accessible to city personnel at all times for sampling. All authorized WWF or city employees shall be permitted, upon suitable notice to the user, to enter upon all properties for the purpose of inspection, observation, measurement, sampling, and testing in accordance with provisions of this chapter. When required, construction of those facilities shall be completed within 90 days following written notification by the city.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
(a) Purpose and Intent. The purpose of this section is to provide for the implementation of the oil and grease management program and the surcharge program. The objective of the oil and grease management program is to minimize the introduction of fat-soluble wastes to the collection system. The objective of the surcharge program is to recover the costs from users for receiving and treating abnormally high-strength compatible wastes, such as CBOD and total suspended solids (TSS).
(b) Oil and Grease Prevention Program.
(1) The discharge by a user to the public sewer of certain liquids or wastes is prohibited unless authorized under the provisions of this section.
(2) Wastes which contain oil and grease may be discharged to the public sewer in accordance with the conditions set forth in this section.
(3) Wastes containing oil and grease, including materials processed through garbage grinders, shall be directed to a grease interceptor or trap.
(4) Wastes containing residual (trace amounts] petroleum-based oil and grease shall be directed to an oil/water separator.
(5) Sanitary facilities and other similar fixtures shall not be connected or discharged to an oil and grease interceptor or an oil/water separator.
(6) Liquid wastes shall be discharged to an oil and grease interceptor or oil/water separator through the inlet pipe only and in accordance with the design/operating specifications of the device.
(7) Oil and grease interceptors and oil/water separators shall be installed in an outdoor location that provides easy access at all times for inspections, cleaning and proper maintenance, including pumping.
(8) Minimum removal efficiency for oil and grease interceptors for animal fats and vegetable oils shall be eighty (80) percent. Minimum removal efficiency for oil/water separators for trace petroleum based wastes shall be ninety (90) percent.
(9) The Utilities Director may request that the nonresidential user provides documentation on the design and performance of the oil and grease interceptor or oil/water separator, including but not limited to catalog cuts, performance data, materials of construction, installation instructions and operation and maintenance manual.
(10) The Utilities Director at his/her discretion may assign a nonresidential user to the surcharge program if, in his/her opinion, discharges from the nonresidential connection will have a negative impact on the Treatment Works.
(c) Design.
(1) Oil and grease interceptors and oil/water separators shall be designed and constructed in accordance with this section, the Utilities' Engineering Design Handbook and Construction Standards, latest edition and other applicable state and local regulations. Design and construction shall be approved by the Utilities Director.
(2) The design of oil/water separators shall be based on peak flow and, where applicable, capable of treating and removing emulsions. Oil/water separators shall be sized to allow efficient removal (retention) of the petroleum-based oils and grease from the user's discharge to the public sewer.
(3) Alternative oil, and grease removal devices or technologies shall be subject to written approval by the Utilities Director and shall be based on demonstrated (proven) removal efficiencies. Under-the-sink oil and grease interceptors are prohibited for new facilities, except as approved bv the Utilities Director for existing facilities with limited food preparation and cooking such as some bakeries and warming kitchens.
(4) An adequate number of inspection and monitoring points, such as a control manhole or inspection box, shall be provided.
(d) Capacity. The capacity of the approved oil and grease interceptor and oil/water separator shall be in accordance with the requirements set forth in the latest edition of the Utilities' Engineering Design Handbook and Construction Standards. The Utilities Director may modify the requirements on a case by case basis.
(e) Maintenance.
(1) Cleaning and maintenance shall be performed by the user. Cleaning shall include the complete removal of all contents including floating materials, wastewater, and bottom sludge and solids.
(2) Decanting, backflushing or discharging of removed wastes back into the oil and grease interceptor of (for) oil/water separator from which the waste was removed or any other oil and grease interceptor or oil/water separator, for the purpose of reducing the volume to be hauled and disposed is prohibited.
(3) Oil and grease interceptors and oil/water separators shall be pumped out completely at a minimum frequency of once every ninety (90) days, or more frequently as needed to prevent carryover of oil and grease into the collection system. Under-the-sink oil and grease traps shall be cleaned at a minimum frequency of once per week, or more often as necessary to prevent pass through of grease and other food solids to the collection system. Cleaning and maintenance shall include removal of materials from the tank walls, baffles, cross pipes, inlets and outlets.
(4) Pumping frequency shall be determined by the Utilities Director based on flows, quantity of oil and grease in the discharge, volume of business, hours of operations and seasonal variations. However, in no event shall the time frame between the pumping of the oil/water interceptor or oil/water separator exceed ninety (90) days. The user shall be responsible for maintaining the oil and grease interceptor or oil/water separator in a satisfactory condition for efficient operation. An interceptor shall be considered to be out of compliance if the grease layer on top exceeds six (6) inches and the solids layer on the bottom exceeds twelve (12) inches or if removal efficiencies as determined through sampling and analysis indicate less than eighty (80) percent.
(5) Wastes removed from each oil and grease interceptor or oil/waste separator shall be disposed of at a facility permitted to receive such washes or a location designated by the city for such purposes in accordance with the provisions of this section. In no way shall the pumpage be returned to any private or public portion of the collection system or the treatment plants without prior written approval from the Utilities Director.
(6) Additives placed into the oil and grease interceptor, (oil/water separator) or building discharge line on a constant, regular or scheduled basis shall be reported to the Utilities Director in writing at least five (5) days prior to use. Such additives include, but are not limited to, emulsifiers, enzymes, commercially available bacteria or other additives designed to absorb, purge, consume, treat or otherwise eliminate grease and oils. Any use of additives shall be approved in writing by the Utilities Director prior to introduction into the waste stream, interceptor or separator. The use of additives, shall, in no way be considered as a substitution for the maintenance procedures required herein.
(f) Facility information.
(1) A log of pumping activities shall be maintained by the user for the previous twelve (12) months The log of pumping activities shall be posted in a conspicuous location for immediate access by city personnel. The log shall include the date, time, volume pumped, hauler's name and license number and hauler's signature. The user shall report pumping activities within forty-eight (48) hours to the Utilities Director on the form so designated by the city for such purposes.
(2) The user shall maintain a file on site of the records and other documents pertaining to the facility's oil and grease interceptor or oil/water separator. Required file contents shall include, as a minimum, the record (as-built) drawings, record of inspections, log of pumping activities and receipts, log of maintenance activities, hauler information, disposal information and monitoring data. The file shall be available at all times for inspection and review by the Utilities Director.
(g) Enforcement and Noncompliance.
(1) Noncompliance with the requirements of this section may result in enforcement action by the city including, but not limited to, termination of water service.
(2) The user shall pay all outstanding fees, penalties and other utility charges prior to reinstatement of water and sewer service.
(3) Any user in the oil and grease management program found in violation of the provisions in this section, and any orders, rules, regulations and permits that are issued pursuant to the chapter, shall be served by the Utilities Director with written notice by personal delivery or by registered or certified mail that states the nature of the violation and providing a reasonable time limit for satisfactory correction of the violation. The affected user shall permanently cease all violations within the time period specified in the notice.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. 10-002, § 2, 1-19-10; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
Subdivision E. National Categorical Pretreatment Standards
(a) Industrial users shall provide necessary wastewater treatment as required to comply with this chapter and shall achieve compliance with all national categorical pretreatment standards within the time limitations as specified by the federal pretreatment regulations and as required by the city. Industrial users with integrated facilities shall comply with any alternative discharge limits as set by the city. Any facilities required to pretreat wastewater to a level acceptable to the city shall be provided, operated, and maintained solely at the user's expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the city for review at the request of the city. The review of those plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the city under the provisions of this chapter. Any subsequent changes in the pretreatment facilities or method of operation shall be reported to the city prior to the user's initiation of the changes.
(b) The categorical pretreatment standards found at 40 CFR Chapter 1, Subchapter N, Parts 405-471 are hereby incorporated.
(1) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Director may impose equivalent concentration or mass limits in accordance with 40 CFR 403.6(C) and Rule 62-625.410(4), F.A.C.
(2) When wastewater subject to a categorical pretreatment standard is mixed wastewater not regulated by the same standard, the Director shall impose an alternate limit using the combined waste stream formula in 40 CFR 403.6(E) and Rule 62-625.410(6), F.A.C.
(3) A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13 and Rule 62-625.700, F.A.C., that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.
(4) When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the Director may convert the limits to equivalent limitations expressed either as mass of pollutant discharges per day or effluent concentration for purposes of calculating effluent limitations applicable to Individual Industrial Users, in accordance with 62-625.401(4), F.A.C.
(5) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15 and Rule 62-625.820, F.A.C.
(c) Dilution. No user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement. The Director may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
(d) All records relating to compliance with pretreatment standards shall be available to officials of the city, the WWF, EPA, or FDEP upon request.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
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