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HomeMy WebLinkAbout~Master - Fats, Oils and Grease Control Ordinance ORDINANCE NO. 4199 AN ORDINANCE TO AMEND THE MUNICIPAL CODE OF THE CITY OF AMES, IOWA, BY REPEALING SECTIONS 28.302(5), 28.304(1), 28.304(8)(D), APPENDIX N CHAPTER 28, UTILITIES SECTION 28.306, APPENDIX Q, WATER METER DIVISION HIGH-STRENGTH SURCHARGE RATES AND ENACTING NEW SECTIONS 28.302(5),(18),(19), (20), 28.304(1), 28.304(8)(D), (11), 28.306 (11), 28.308 AND APPENDIX N CHAPTER 28, UTILITIES SECTION 28.306, APPENDIX Q WATER METER DIVISION HIGH-STRENGTH SURCHARGE RATES THEREOF,FOR THE PURPOSE OF ESTABLISHING A FATS,OILS,AND GREASE CONTROL PROGRAM; REPEALING ANY AND ALL ORDINANCES OR PARTS OF ORDINANCES IN CONFLICT TO THE EXTENT OF SUCH CONFLICT; AND ESTABLISHING AN EFFECTIVE DATE. BE IT ENACTED,by the City Council for the City of Ames,Iowa,that: Section One. The Municipal Code of the City of Ames, Iowa shall be and the same is hereby amended by enacting a new Sections 28.302(5),(18),(19),(20),28.304(1),28.304(8)(D),(11),28.306(11),28.308 as follows: "Sec.28.302. DEFINITIONS. (5) `Normal Domestic Wastewater'shall mean,for the purposes of surcharge Program implementation,wastewater that has constituent concentrations at or below the values shown in the following table,expressed in milligrams per liter(mg/L). Constituent Concentration,mg Oxygen Demand CBOD, 250 COD 550 Nitrogen NH,-N 30 TKN 45 Solids TSS 300 Fats,Oils,and Grease Oil and Grease 300 (18) `FOG'(denoting Fats,Oils,and Grease)shall mean organic polar compounds derived from animal and/or plant sources that contain multiple carbon chain triglyceride molecules.These substances are detectable and measurable using analytical test procedures in 40 CFR 136,as maybe amended from time to time.All are sometimes referred to herein as"grease","greases",and"oil and grease". (19) `FSE' (denoting Food Service Establishment) shall mean an operation or enterprise that stores,prepares,packages,serves,vends,or otherwise provides food for human consumption,and which is licensed by the state of Iowa for such activities.Such facilities may include,but are not limited to,those that process meat or other food ingredients as an intermediate step or for final human consumption,food service operations in a summer camp, residential substance abuse treatment facility,halfwayhouse,correctional facility,school,restaurant,commercial kitchen, caterer,church,hotel,hospital,prison, correctional facility,care institution or similar facility. (20) `Grease Interceptor' shall mean a tank that serves one or more fixtures and captures wastewater from garbage disposals, floor drains,pot and pan sinks and trenches as allowed by local plumbing codes. Dishwashers may in some instances also be connected to a grease interceptor as allowed by local plumbing codes. A grease interceptor reduces the amount of FOG in wastewater prior to its discharge into the POTW and may be a multi- compartment tank located underground or a small device located within a building. See.28.304. SEWER RATES ESTABLISHED. (1) Each user shall pay for the services provided by the City based on its use of the treatment works as determined by water meter readings or other appropriate methods acceptable to the City. (8) (d) The sewer service charge will be billed only on the difference betweenthe water meter reading and the yard meter reading. (11) For those users which operate Food Service Establishments licensed by the state of Iowa,a Restaurant Surcharge,in addition to the normal user charge,shall be collected.The Restaurant Surcharge shall be listed in Appendix Q. Customers who participate in the City of Ames Non-Domestic Waste Pretreatment Program shall not besubject to the Restaurant Surcharge,but will instead be assessed a High-Strength Surcharge Rate that includes the surcharge for Oil and Grease as calculated based on their sampling results. Sec.28.306. GENERAL PROHIBITIONS FOR WASTE DISPOSAL IN THE SEWER. (11) Any additive or emulsifier designed for the purpose of reducing the accumulation of Fats,Oils, and Grease in plumbing,grease interceptor equipment,or the POTW,except those additives or emulsifiers that have been approved for such use by the Director of Water and Pollution Control. See.28.308 FATS,OILS,AND GREASE CONTROL PROGRAM. The purpose of this section shall be to aid in the prevention of sanitary sewer blockages and obstructions from contribution and accumulation of Fats, Oils, and Grease (FOG) into the POTW. Such discharges from commercial kitchens,restaurants,food processing facilities and all other establishments,where FOG of vegetable or animal origin is discharged directly or indirectly into the POTW,can contribute to line blockages and/or spills in violation of Title 40, Code of Federal Regulations 40 CFR, Part 403,as it may be amended from time to time. (1) Any customer which operates a Food Service Establishment(FSE)licensed by the state of Iowa,and which is connected to the City's Treatment Works,shall be subject to the FOG Control Program. (2) Any costs for compliance with the regulations set forth in the FOG Control Program shall be the responsibility of the customer. (3) FSEs subject to the FOG Control Program may apply for exemption from the Restaurant Surcharge. Exemptions shall utilize evidence gathered in the preceding six(6)month period to determine whether an FSE is exempt from the Restaurant Surcharge for sewer bills mailed during the following six(6)month period.Exemption periods shall be from January to June and from July to December. (4) The Director of Water and Pollution Control, or designee,may exempt an FSE from the Restaurant Surcharge for a six(6)month period if one of the following criteria is met during the preceding six(6)month period: (a) Submission of records from a contractor who specializes in the disposal of restaurant grease. Such records shall include the following information: (i) The name and employer of the individual performing the grease interceptor cleaning(s). (ii) The date(s)on which grease was removed from each grease interceptor controlled by the customer. (iii) The quantity of grease removed during each cleaning.In the case of a gravity-flow grease interceptor,the quantity of grease shall be calculated by comparing the depth of the floating fats,oils,and grease, plus the depth of the accumulated solids,and dividing that depth by the total depth of the unit(the design liquid level), expressed as a percentage. In instances where an interceptor requires cleaning multiple times duringthe six(6)month review period,records shall be submitted for each cleanout. The owner or operator of the FSE shall cause the grease interceptor to be cleaned when FOG and solids reach 25%or less of the design liquid level of the grease interceptor. When multiple cleanouts are required during a review interval,the level of FOG and solids from each cleanout shall average less than 25%,and no single instance shall equal or exceed 35%. (iv) Verification that the place of disposal of hauled grease is a facility designed for such a purpose and is licensed or certified in accordance with local, state, and federal regulations, as appropriate. (v) Verification that the method of transporting hauled grease is appropriate for such a purpose and complies with local,state,and federal regulations,as appropriate. (vi) Verification that any grease interceptor from which grease is removed is inspected and found to be in proper working order. This inspection shall include verification that the sanitary"tees"on the inlet and outlet sides of the grease interceptor are not obstructed,loose,or missing,verification that any baffles are secure and in place,verification that no cracks or defects in the tank are present,and verification that lids are securely and properly seated following completion of the cleaning.If any component of the grease interceptor is not in proper working order, records shall indicate what defect(s)exist and when,how,and by whom such defect(s)are remedied. (b) Submission of a laboratory test to determine the oil and grease content of typical wastewater discharge. Such tests shall be conducted by a laboratory certified by the state of Iowa to test oil and grease under the procedures specified in Chapter 567.83 ofthe Iowa Administrative Code.Laboratory tests shall conform to the following conditions: (i) The sample shall be obtained by use of a"grab sampling"method, in which the sample flask is held under a free-flowing outfall of water from a sampling port designed for such uses. (ii) Staff ofthe Water Pollution Control Department shall select the date and time during which a sample may be obtained,the timing of which shall be selected to coincide with a peak customer demand. (iii) The sample shall not exceed 300 mg/L oil and grease. (c) Submission of a written logbook that details the grease control activities in the FSE. Such records shall be spot-checked for compliance by the Water and Pollution Control Department staff.The logbook shall at all times be kept and maintained on a day-to-day basis, and records shall be kept secure at the premises of the FSE for a continuous period of at least three years.The logbook shall record the following activities: (i) Each cleaning of the FSE's grease interceptor(s), including the date of cleaning, quantity of grease removed, method by which removed grease is disposed, the operating condition of the grease interceptor,and any repairs to the grease interceptor or associated plumbing. (ii) Training held forthe FSE's staffregarding practices that will reduce the introduction of FOG into the sanitary sewer. (iii) Self-inspection for presence and proper use of drain screens,clean and grease-free nature of exhaust hood equipment, and presence of spill clean-up kits, warning signage over sinks regarding FOG practices,and informational posters regarding FOG. (iv) Introduction of any additive or emulsifier designed for the purpose of treating Fats, Oils, and Grease and reducing its accumulation in grease interceptor equipment or the POTW. The FSE shall verify before use that any additive or emulsifier to be used has been approved by the Director of Water and Pollution Control. (v) Any other activities undertaken by the FSE's staff to prevent or mitigate the introduction of FOG into the Treatment Works or into the environment. (5) The Director of Water and Pollution Control may,upon finding evidence of accumulated FOG in the Treatment Works, authorize an inspection of any FSE that may reasonably be believed to have introduced that accumulation of FOG.Such inspection may occur at any reasonable time and without prior notification.Inspections shall be limited to the equipment and practices related to the introduction of FOG and waste water into the Treatment Works. The FSE shall allow the individual performingthis inspection,bearing proper credentials and identification,to enter upon or into the building, facility, or property housing the FSE for the purpose of inspection, observation, measurement, sampling,testing, or record review. Upon request of the individual performing theinspection,the FSE shall open any grease interceptor for the purpose of confirming that maintenance frequency is appropriate,that all necessary parts of the installation are in place,and that all grease interceptors and related equipment and piping are maintained in efficient operating condition.Inspections may be undertaken as many times as necessary to identify the source of FOG entering the Treatment Works. Section Two. The Municipal Code of the City of Ames,Iowa shall be and the same is hereby amended by enacting a new Appendix N,Chapter 28,Utilities as follows: APPENDIX N CHAPTER 28, UTILITIES All sections of this chapter carry the standard penalty,except the following: Sec.28.306(1)AND 28.306(3)THROUGH 28.306(11).WASTE DISPOSAL. Up to$1,000.00 for the 1 st and each subsequent offense. See.28.306(2). WASTE DISPOSAL Up to$1,000.00, in addition to the actual cost of cleanup for any sanitary sewer overflow caused by an introduction of substances as described in Sec. 28.306, for the 1 st and each subsequent offense. In the event that more than one utility customer is responsible for the overflow,the municipal infraction may be levied upon each customer, and the cost of cleanup shall be prorated among those responsible. Section Three. The Municipal Code of the City of Ames, Iowa shall be and the same is hereby amended by enacting a new Appendix Q,High-Strength Surcharge Rates and Restaurant Surcharge as follows: High-Strength Surcharge Rates Parameter Surcharge Rate Oxygen Demand CBODS $0.41/lb. COD $0.15/lb. Nitrogen NH3-N $1.44/lb. TKN $0.93/lb. Solids TSS 1$0.60/lb. Fats,Oils,and Grease Oil and Grease $0.00/lb. Restaurant Surcharge Restaurant surcharge on sewer use for customers operating Food Service Establishments $0.00/100 cubic ft." Section Four.Violation of the provisions of this ordinance shall constitute a municipal infraction punishable as set out by law. Section Five. All ordinances,or parts of ordinances, in conflict herewith are hereby repealed to the extent of such conflict, if any. Section Six. This ordinance shall be in full force and effect from and after its passage and publication as required by law. Passed this 251h day of November,2014. C� Diane R.Voss, City Clerk Ann H. Campbell,Mayor