(A) Scope and purpose. Management of fats, oils and grease is essential to protect the City of Murray Sewer System, including, but not limited to, its collection systems, pumping stations, and water resource recovery system, from the discharge of excess fats, oil and grease (FOG) by food service establishments (FSEs). The accumulation of fats, oils and grease at any point along the Murray Sewer System's collection and treatment system can cause blockages which can lead to sanitary sewer overflows. In addition to sewer back-ups into homes and businesses, property damage, and disruption of business activities, these overflows can cause the degradation of water quality in the receiving waters of Kentucky, adversely impact Murray Sewer System operations, increase the cost of sewer services, and violate the Clean Water Act. In order to manage the disposal of fats, oils and grease into the collection system with minimal disruption and cost, the Murray Sewer System has established design standards, procedures and/or guidelines to regulate FSE operations and the appropriate disposition of FOG wastes pumped from FSE grease control equipment (GCE) during routine maintenance.
(B) Definitions for fats, oils and grease management.
"ADDITIVES." Include, but are not limited to, products that contain solvents, emulsifiers, surfactants, caustics, acids, enzymes, and bacteria.
"AUTOMATIC GREASE REMOVAL UNIT/ACTIVE GREASE RECOVERY UNIT (AGRU)." GCE then separates the FOG from the AGRU as effluent is flushed down the drain. Solids are separated on a daily basis and the AGRU maintains its efficiency throughout the life of the unit. FOG is skimmed automatically and transferred into a collector bin for easy removal and recycling.
"EXEMPTION." A release from the requirement to install grease control equipment (GCE). Exemptions are approved by Murray Sewer System based on responses to questions on the Murray Sewer System request for exemption form.
"EXTENSIVE REMODELING." Modifications made to an existing food service establishment (FSE) sufficient to require issuance of a building permit, or the temporary closure of the FSE for building renovation.
"FATS, OILS & GREASE (FOG)." Organic polar compounds derived from animal and/or plant sources. FOG may be referred to as "grease" or "greases" in this section.
"FOOD SERVICE ESTABLISHMENT (FSE)." Any establishment, business, facility or user engaged in preparing, serving, or making food available for consumption. Single-family residences are not FSEs. FSEs will be classified as follows:
(a) Class 1: Deli: engaged in the sale of cold-cut and microwaved sandwiches/subs with no frying or grilling on site; ice cream shops and beverage bars as defined by North American Industry Classification System (NAICS) 722515, and mobile food vendors as defined by NAICS 722330.
(b) Class 2: Limited-service restaurants: (i.e. fast food facilities) as defined by NAICS 722513 (establishments primarily engaged in providing food services where patrons generally order or select items and pay before eating) and caterers as defined by NAICS 722320 (establishments primarily engaged in providing single event-based food services, having equipment and vehicles to transport meals and snacks to events and/or to prepare food at off-premise sites).
(c) Class 3: Full service restaurants: as defined by NAICS 722511 (establishments primarily engaged in providing food services to patrons who order and are served while seated and pay after eating).
(d) Class 4: Buffet and cafeteria facilities: as defined by NAICS 722514 (establishments, known as cafeterias, grill buffets, or buffets, primarily engaged in preparing and serving meals for immediate consumption using cafeteria-style or buffet serving equipment, such as steam tables, refrigerated areas, display grills, and self-service nonalcoholic beverage-dispensing equipment).
(e) Class 5: Institutions: (i.e. schools, hospitals, prisons, etc.) as defined by NAICS 722310 (establishments primarily engaged in providing food services at institutional, governmental, commercial, or industrial locations of others based on contractual arrangements with these types of organizations for a specified period of time. The establishments of this industry provide food services for the convenience of the contracting organization or the contracting organization's customers. The contractual arrangement of these establishments with contracting organizations may vary by type of facility operated (e.g., cafeteria, restaurant, fast-food eating place), revenue sharing, cost structure, and personnel provided).
"GARBAGE DISPOSAL." A kitchen appliance designed to grind food particles to a small enough size to dispose to a sink drain.
"GREASE (BROWN)." Fats, oils and grease that are discharged to the grease control equipment, or from kitchen or food prep wastewater.
"GREASE (YELLOW)." Fats, oils and grease that have not been in contact with or contaminated from other sources (water, wastewater, solid waste, etc.) and can be recycled.
"GREASE CONTROL EQUIPMENT (GCE)." (Also referred to as FOG interception equipment, FOG equipment). Devices for separating and retaining FSE wastewater FOG prior to entering the Murray Sewer System. The GCE is constructed to separate and trap or hold fats, oils and grease substances to prohibit them from entering the Murray Sewer System. GCE should only receive kitchen wastewater. Devices include grease interceptors, grease traps, automatic grease removal units, or other devices approved by Murray Sewer System.
“GREASE INTERCEPTOR (GI) (also known as gravity grease trap).” GCE identified as a large multi-compartment tank, usually one thousand (1,000) to two thousand (2,000) gallon capacity with proper inlet and outlet T's, and other necessary components, that provides FOG control for a FSE. Usually constructed of concrete, fiberglass, or steel. No sanitary wastewater (black water) line should be connected to the grease interceptor. Grease interceptors will be located outside the FSE and should be inspected monthly and pumped out and cleaned on a regular basis.
"GREASE RECYCLE CONTAINER." A container used for the storage of yellow grease.
"GREASE TRAP (GT)." GCE identified as an "under the sink" trap, a small container with baffles, or a floor trap. For an FSE approved to install a grease trap, the minimum size requirement is the equivalent of a thirty-five (35) gallon per minute/seventy (70) pound capacity trap. Grease traps shall have flow control restrictors and a vent pipe. No dishwasher, or sanitary wastewater (black water) line shall be connected to an "under sink" or floor grease trap. See also passive grease trap.
"MULTI-UNIT FACILITY." A single building or facility with multiple separate but adjoining units, each with separate plumbing and possibly other facilities.
"PASSIVE GREASE TRAP." (Also known as passive hydromechanical grease trap, under the sink grease trap, grease trap). GCE that slows the flow of wastewater to allow it to cool and separate into three (3) layers: FOG, solids, and clear water. The FOG forms a "grease mat" at the top of the unit. Water flows out through a pipe fixed lower than the layer of grease, but above the solids layer. As the interceptor fills, it gradually loses efficiency, requiring frequent emptying and cleaning.
"SERIES." (Grease interceptors installed in series). Grease interceptor tanks are installed one after another in a row and are connected by plumbing pipe.
"SIGNIFICANT REMODELING." Modifications made to an existing FSE sufficient to require issuance of a building permit or the temporary closure of the FSE for building renovation or as deemed necessary by the City of Murray Department of Planning.
"SINGLE SERVICE KITCHEN." An FSE that does not prepare food onsite (heat and serve only) and which uses only disposable service ware (utensils and dishes).
"TEE OR T (INFLUENT AND EFFLUENT)." A T-shaped pipe extending from the ground surface below grade into the grease interceptor to a depth allowing recovery (discharge) of the water layer located under the layer of FOG. Influent and effluent T's are recommended to be made of PVC-schedule 40 or equivalent material. Influent T's should extend two-thirds (2/3) of the grease interceptor water depth, and effluent T's should extend to within twelve (12) to fifteen (15) inches of the bottom of the interceptor tank to prevent short circuiting.
"WATER (BLACK)." Wastewater containing human waste, from sanitary fixtures such as toilets and urinals.
"WATER (GRAY)." Wastewater other than black water as defined in this section.
(C) Any water or waste, vegetable oils, animal fats, or grease, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between thirty-two degrees (32°) F and one hundred fifty degrees (150°) F (zero degrees (0°) C and sixty- five degrees (65°) C) shall not be discharged into the sanitary sewer system. Any wastewater treatment system which violates this requirement will be charged an additional eighteen cents ($0.18) per pound for any discharge in excess of one hundred (100) mg/l.
(D) Any garbage that has not been properly shredded. Garbage grinders may be connected to sanitary sewers from homes where garbage originates from the preparation of food in kitchens for the purpose of consumption on the premises. Grinders are discouraged in motels, institutions, restaurants, hospitals, catering establishments or similar places because the ground garbage will go into their traps and interceptors and cause the solids to increase and meet and/or exceed the twenty-five percent (25%) limit more quickly thus decreasing their efficiency and resulting in more frequent pumping. All food service establishments must have their tanks or traps pumped at a frequency such that not more than twenty-five percent (25%) of the total volume is made up of FOG and solids. After such designated point, the efficiency is decreased and the FSEs will be sending FOG through the sanitary sewer lines.
(E) General requirements for food service establishments:
(1) All FSEs shall meet the requirements of the City of Murray Fats, Oils, & Grease Management Policy.
(2) FSEs shall install and maintain appropriately sized GCE.
(3) GCE shall be installed, operated, properly maintained, and repaired at the sole expense of the FSE owner/operator.
(4) Every structure of the facility shall be constructed, operated and maintained in a manner to ensure the discharge of FOG is directed solely to the FOG management equipment. No valve or piping bypass equipment which may alter or prevent the designed operation of the FOG management equipment/GCE is allowed.
(5) No FSE shall discharge fats, oils, and/or grease in concentrations at a flow rate and/or pollutant concentration that either alone, or in interaction with other substances, causes interference with the city wastewater system, pass through of the system, contributes to a blockage in the collection system, or constitutes an adverse environmental impact.
(6) All FSEs are required to maintain records of annual certification, cleaning and maintenance of GCE. GCE maintenance records include, at a minimum, the following:
(a) Date of cleaning/maintenance;
(b) Company or person conducting the cleaning/maintenance;
(c) Volume (in gallons) of grease wastewater removed; and
(d) Final disposal location (i.e. landfill, or disposal location of waste hauler*). *A grease waste hauler completed manifest that includes all the minimum information mentioned above will meet this requirement.
(7) GCE maintenance records shall be maintained at the FSE premises and provided to Murray Sewer System and/or Health Department upon request.
(8) The FSE shall maintain GCE certification and maintenance records for three (3) years.
(9) Grease control equipment certification requirements:
(a) All establishments with grease control equipment must have their grease interceptor or grease trap inspected and certified annually by an approved grease waste hauler or certified plumber.
(b) If a grease interceptor or grease trap satisfies all of the certification requirements, proof of certification shall be sent to Murray Sewer System Pretreatment Coordinator within five (5) days. No further action is required.
(c) If a grease interceptor or grease trap fails to satisfy any of the certification requirements, then a corrective action response is required by the FSE owner per subsection (E)(10)(b) below. Certification forms [Grease Interceptor Certification (Form A), Grease Trap Certification (Form B), or AGRU Certification (Form C)] must be completed and signed by the grease waste hauler or plumber, as well as the FSE owner or authorized representative, and submitted to Murray Sewer System Pretreatment Coordinator.
(d) The original certification form must be submitted within ten (10) days from the date of certification to the following address:
Murray Public Works
Attn: Pretreatment Coordinator
200 Andrus Drive
Murray, KY 42071
(10) Effluent limits:
(a) At no time shall the pH of the wastewater discharged from the FOG management equipment prior to mixing with any other wastewater from the facility be less than six (6) nor greater than nine (9).
(b) At no time shall the concentration of fats, oils, and grease in wastewater from the FOG management equipment, prior to mixing with any other wastewater from the facility exceed one hundred (100) milligrams per liter. All analyses shall be conducted according to the current method as listed in Title 40 CFR 136.
(11) Failure of grease interceptor or grease trap certification:
(a) In the event of a failed grease interceptor certification or grease trap certification, the FSE owner or authorized representative is responsible for notifying Murray Sewer System of the failure within twenty-four (24) hours from the time the FSE becomes aware of the circumstances.
(b) A written submission must be provided within five (5) days of the time the FSE becomes aware of the circumstances. The written submission should provide detailed "corrective action response" information on the grease interceptor certification form or the grease trap certification form that is submitted to the city. If necessary, additional pages may be attached to the certification form. At a minimum, the "corrective action response" information must include the reason for the failed certification, what corrective action will be taken to correct the problem, and the date the corrective action will be completed. The written submission must be submitted to the following address:
Murray Public Works
Attn: Pretreatment Coordinator
200 Andrus Drive
Murray, KY 42071
(c) Upon completion of the required corrective actions, a new certification must be submitted to the address noted above.
(12) Best management practices (BMPs) shall be observed by all FSEs for controlling the discharge of FOG from their facility. Examples of BMPs include:
(a) Recycle waste cooking oil; dispose in grease recycle bin or container. Do NOT pour any grease into sinks, floor drains or mop sinks.
(b) Post "NO GREASE" signs above all kitchen sinks as a reminder to employees.
(c) "Dry wipe" and scrape into a trash container as much food particulates and grease residue from pots, pans, and plates as possible.
(d) Use strainers in sink drains and floor drains to prevent large food particles from going into the sewer line.
(e) If an oil and grease spill should occur, clean up using "dry" oil absorbent material or use ice to make grease solidify. Scoop up and dispose into a trash container. Do NOT wash oil or grease into drains.
(f) Dispose of food items in the trash. Food grinder use is discouraged due to buildup of solids in the GCE, which causes decreased efficiency and increased pumping frequency of the GCE.
(g) Educate and train all employees on grease control and prevention of sewer pipe clogs and sewer overflows.
(13) FSEs shall dispose of yellow grease in an approved container, or recycle container, and the contents shall not be discharged to any sanitary sewer line, storm water grate, drain, or conveyance.
(14) Grease trap waste should not be mixed with yellow grease into the grease recycle container. Yellow grease, oils or grease, poured or discharged into the FSE sewer lines or city wastewater system is a violation of this chapter.
(15) FSE shall not push or flush the non-water portion of GCE into the public sewer.
(F) Grease control equipment installation requirements:
(1) Grease control equipment must remove fats, oils, and grease to prevent a flow rate and/or pollutant concentration that either alone, or in interaction with other substances, causes interference with the city wastewater system, pass through of the system, or constitutes an adverse environmental impact. Failure to comply with this requirement shall result in an enforcement action in accordance with this chapter.
(2) Waste from garbage grinders used for the grinding of plastic, cardboard, expanded polystyrene foam (i.e. Styrofoam®) or paper products, inert materials or garden refuse shall not be discharged into a community sewer. For preparation of food consumed on the premises (food grinder), there is a "food" grinder exception but only where applicable fees are paid, and such grinders must shred the waste to a degree that all particles will be carried freely under normal flow conditions prevailing in the community sewers. Furthermore, waste from food grinders shall not be discharged into grease control equipment. At this time, Murray Sewer System is not charging fees for food grinder use; however, users should be aware that a charge may be levied. Use of a grinder is not recommended.
(3) The GCE shall be water-tight and constructed of concrete or other durable material. It shall be located so as to be accessible for convenient inspection and maintenance. No permanent or temporary structures or containers shall be placed directly over the GCE.
(4) Dishwashers should not be plumbed to the GI if the pre-rinse system is in place: only the pre-rinse system should be plumbed to the GI. For GIs with the dishwasher plumbed to the GI (in addition to the pre-rinse) the GI size shall be increased a minimum of thirty percent (30%) of the sizing requirement. Thirty percent (30%) is required to prevent short-circuiting of the GI when the extremely hot water from a dishwasher is introduced to the GI.
(5) Existing food service establishment requirements:
(a) An existing FSE shall be required to submit a FOG plan to Murray Sewer System for approval within thirty (30) days of notification by Murray Sewer System. The FOG plan shall include:
1. Identification of all cooking and food preparation equipment (i.e. fryers, grills, woks, etc.).
2. The number and size of dishwashers, sinks, floor drains, and other plumbing fixtures.
3. The type of FSE classification.
4. The type of food to be prepared and/or served.
5. Plans for the grease collection equipment dimensions and location.
(b) An existing FSE may submit to Murray Sewer System, for review and approval, a FOG plan comprised of a grease control equipment alternative to the minimum GCE required based on the FSE's classification. The alternative equipment shall be comparable to the minimum required GCE in its effectiveness to prevent FOG from entering the sanitary sewer system.
(c) At a minimum, kitchen and sanitary waste shall be plumbed as described in the "new food service establishment" subsection (f)(6).
(d) The submitted FOG Plan shall include a proposed timeframe for implementation of the plan. Murray Sewer System will review that FOG Plan submitted by the FSE. The FOG plan may be approved as submitted or may be approved subject to such revisions and modifications as Murray Sewer System determines in its discretion to be necessary for the proper protection of the city wastewater system.
(e) In the case that GCE is determined to be impractical or physically impossible to install, a variance for compliance may be granted if substantial evidence is provided by the owner of the FSE. It shall be the sole discretion of Murray Sewer System to grant or deny a variance. A variance shall become invalid at such time as the FSE changes categories or undergoes substantial remodeling.
(f) If the discharge exceeds the design criteria of the grease trap/FOG interceptor, the permittee shall be required to remove and replace the GCE or provide supplemental treatment by installing additional indoor and/or outdoor FOG management equipment.
(6) New food service establishment, upgrading of existing food service establishment, or reactivation of a food service establishment requirement.
(a) The initial opening of a FSE, upgrading of an existing FSE, or reactivation of any establishment, business, or facility as a FSE following twelve (12) months of non-continuous use as an FSE will require the installation, maintenance, and proper operation of grease control equipment (GCE). Food service establishments in one of these categories shall submit a FOG plan to Murray Sewer System for approval. The FOG plan shall include:
1. Identification of all cooking and food preparation equipment (i.e., fryers, grills, woks, etc.);
2. The number and size of dishwashers sinks floor drains and other plumbing fixtures;
3. The type of FSE classification;
4. The type of food to be prepared and/or served; and
5. Plans for the grease control equipment dimensions and location.
(b) New construction of FSEs shall have separate sanitary (restroom) and kitchen process sewer lines. The kitchen process lines shall be plumbed to appropriately sized GCE. No sanitary wastewater or storm water shall be plumbed to the GCE.
(c) The GCE shall be installed to service kitchen flows and shall be connected to those fixtures or drains which would allow fats oils and grease to be discharged. This shall include:
1. Pot sinks;
2. Pre-rinse sinks;
3. Any sink into which fats, oils, or grease are likely to be introduced;
4. Soup kettles or similar devices;
5. Work stations;
6. Floor drains or sinks into which kettles may be drained;
7. Automatic hood wash units; and
8. Any other fixtures or drains that are likely to allow fats, oils, and grease to be discharged.
(d) All of the FSE's internal plumbing shall be constructed to separate sanitary (restroom) flow from kitchen process flow. Sanitary flow and kitchen process discharges shall be approved separately by Murray Sewer System and shall discharge from the building separately. The kitchen process line(s) shall be plumbed to appropriately sized GCE. Kitchen process lines and sanitary lines may combine prior to entering the public sewer; however, the lines cannot be combined until after passing through the GCE. Existing FSEs shall comply with this chapter.
(e) If the discharge exceeds the design criteria of the grease trap/FOG interceptor, the permittee shall be required to remove and replace the GCE or provide supplemental treatment by installing additional indoor and/or outdoor FOG management equipment.
(7) New multi-unit facilities.
(a) New strip malls or strip centers must have two (2) separate sewer line connections at each unit within the strip mall or strip center. One (1) sewer line will be for sanitary wastewater and one sewer line will be for the kitchen area, or potential kitchen area, of each unit. The kitchen area, or potential kitchen area, sewer line will be connected to floor drains in the specified kitchen area, and will connect, or be able to connect, to other food service establishment kitchen fixtures, such as a three (3) compartment sink, two (2) compartment sink, pre-rinse sink, mop sink and hand wash sink.
(b) New multi-unit facility owners or new strip mall facility owners shall contact Murray Sewer System prior to conducting private plumbing work at the multi-unit facility site. Multi-unit facility owners, or their designated contractors, shall have plans for separate private wastewater lines for kitchen and sanitary wastewater for each unit. In addition, the plans shall identify "stubout" locations to accommodate a minimum of a one thousand (1,000) gallon grease interceptor for each unit of the multi-unit facility. New multi-unit facility, or new strip mall facility, owners shall ensure that suitable physical property space and sewer gradient are available to accommodate the installation of an exterior, in-ground grease interceptor when determining the building location.
(c) An FSE located in a new multi-unit facility shall have a minimum of a one thousand (1,000) gallon grease interceptor installed, unless that FSE is identified as a Class I FSE. Class I FSEs are exempt from the requirements to install grease interceptors. Neither sanitary wastewater nor Black Water, shall be connected to GCE.
(8) Variance to grease interceptor installation. At the discretion of Pretreatment Coordinator, some FSEs may receive a variance from the required installation of a grease interceptor.
(9) Approval of grease control equipment. All existing FSEs that have installed new grease control equipment, new FSEs, FSEs that are planning to upgrade their facilities, or FSEs that are planning to reactivate any establishment, business, or facility as an FSE following twelve (12) months of noncontinuous use as an FSE, shall contact Murray Sewer System Wastewater Inspector for final approval of the proposed grease control equipment. This will include onsite inspection of the grease control equipment by Murray Sewer System Wastewater Inspector. Failure of the FSE to contact Murray Sewer System to conduct the inspection of the new GCE will result in an enforcement action again the FSE owner.
(10) Grease control equipment sizing.
(a) Minimum acceptable size of grease control equipment for each FSE classification will be as follows:
1. Class 1: Deli: engaged in the sale of cold-cut and microwaved sandwiches/subs with no frying or grilling on site; ice cream shops and beverage bars, mobile food vendors - twenty-five (25) gpm/fifty (50) pound grease trap.
2. Class 2: Limited-service restaurants: (i.e. fast food facilities, pizzerias, and family restaurants) caterers - one thousand (1,000) gallon grease interceptor.
3. Class 3: Full service restaurants: one thousand (1,000) gallon grease interceptor.
4. Class 4: Buffet and cafeteria facilities: one thousand five hundred (1,500) gallon grease interceptor.
5. Class 5: Institutions: (i.e. schools, hospitals, prisons, etc.) two thousand (2,000) gallon grease interceptor.
(b) Pretreatment Coordinator will review GCE sizing information received from the FOG plan of the FSE's engineer, architect or contractor then determine whether to approve, or require additional grease interceptor volume, based on the type of FSE, the number of fixture units, and additional calculations. Grease interceptor capacity should not exceed two thousand (2,000) gallons for each interceptor tank. In the event that the grease interceptor calculated capacity exceeds two thousand (2,000) gallons, the FSE shall install an additional interceptor of the appropriate size. If additional interceptors are required, they shall be installed in series.
(c) Grease interceptors that are installed in series shall be installed in such a manner as to ensure positive flow between the tanks at all times. Therefore, tanks shall be installed so that the inlet invert of each successive tank shall be a minimum of two (2) inches below the outlet invert of the preceding tank.
(G) Grease interceptor design and installation.
(1) Piping Design.
(a) The inlet and outlet piping shall have two (2) way cleanout tees installed.
(b) The inlet piping shall enter the receiving chamber two and one-half (2.5) inches above the invert of the outlet piping.
(c) On the inlet pipe, inside the receiving chamber, a sanitary tee of the same size pipe in the vertical position with the top unplugged shall be provided as a turndown. To provide air circulation and to prevent "air lock," a pipe (nipple) installed in the top tee shall extend to a minimum of six (6) inches clearance from the interceptor ceiling, but not less than the inlet pipe diameter. A pipe installed in the bottom of the tee shall extend to a point of two-thirds (2/3) the depth of the tank. The inlet T should be made of Schedule 40 PVC or equivalent material. [See illustration].
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A. Minimum six (6) inches, but not less than pipe diameter.
B. Inlet pipe invert to be two and one-half (2.5) inches above liquid surface.
C. Inlet pipe to terminate two- thirds (2/3) depth of water level.
D. Ninety (90) degree sweep minimum size - six (6) inches.
E. Twelve (12) inches from floor to end of sweep.
F. Twelve (12) inches from floor to end of outlet pipe.
G. Outlet pipe no smaller than inlet pipe, minimum - four (4) inches.
H. Minimum depth of liquid capacity - forty-two (42) inches.
I. Maximum distance from ceiling - six (6) inches.
(d) The outlet piping shall be no smaller than the inlet piping, but in no case smaller than four (4) inches ID.
(e) The outlet piping shall extend to twelve (12) inches above the floor of the interceptor and shall be made of non-collapsible material. Minimum requirement for outlet piping is Schedule 40 PVC.
(f) The outlet piping shall contain a tee installed vertically with a pipe (nipple) installed in the top of the tee to extend to a minimum of six (6) inches clearance from the interceptor ceiling, but not less than that of the pipe diameter, with the top open. Minimum requirement for the outlet tee is Schedule 40 PVC.
(2) Baffles.
(a) The grease interceptor shall have a non-flexing (i.e. concrete, steel, or other suitable material) baffle the full width of the interceptor, sealed to the walls and the floor, and extend from the floor to within six (6) inches of the ceiling. The baffle shall have an inverted ninety (90) degree sweep fitting at least equal in diameter size to the inlet piping, but in no case less than six (6) inches ID. The bottom of the sweep shall be placed in the vertical position in the inlet compartment twelve (12) inches above the floor. The sweep shall rise to the horizontal portion, which shall extend through the baffle into the outlet compartment. The baffle wall shall be seated to the sweep.
(b) The inlet compartment shall be two-thirds (2/3) of the total liquid capacity with the outlet compartment at one-third (1/3) liquid capacity of the interceptor.
(3) Access openings (manholes):
(a) Access to grease interceptors shall be provided by a minimum of one (1) manhole per interceptor division (baffle chamber) and of twenty- four (24) inches minimum dimensions terminating one (1) inch above finished grade with cast iron form and cover. An eight (8) inch thick concrete pad extending a minimum of twelve (12) inches beyond the outside dimension of the manhole frame shall be provided. One manhole shall be located above the inlet tee hatch and the other manhole shall be located above the outlet tee hatch.
(b) Access openings shall be mechanically sealed and gas-tight to contain odors and bacteria and to exclude vermin, surface and ground water, in a manner that permits regular reuses.
(c) Manholes are to be accessible for inspection by the Wastewater Inspector.
(4) Additional requirements
(a) Responsibility. Removal of the grease from the wastewater routed to a public or private sanitary system is the responsibility of the user/owner.
(b) Location. Grease interceptors shall be located so as to be readily accessible for cleaning, maintenance, and inspections. They should be located close to the fixture(s) discharging the greasy wastestream. If possible, grease interceptors should not be installed in "drive-thru" lanes or a parking area. Grease interceptor access manholes shall never be paved over.
(c) Water-tight. Precast concrete grease interceptors shall be constructed to be water-tight. A static water test shall be conducted by the installer and timed so as to permit verification through visual inspection by the city and other regulatory agency. The water test shall consist of plugging the outlet (and the inlet if necessary) and filling the tank(s) with water to the tank top a minimum of twenty-four (24) hours before the inspection. The tank shall not lose water during this test period. Certification by the plumbing contractor shall be supplied to the city prior to final approval of grease control equipment.
(d) Construction material. Grease interceptors shall be constructed of sound durable materials, not subject to excessive corrosion or decay, and shall be water and gas-tight. Each interceptor shall be structurally designed to withstand any anticipated load to be placed on the interceptor (e.g. vehicular traffic in parking or driving areas). NOTE: Concrete materials and other grease interceptor materials shall meet the American National Standards Institute, Inc. (ANSI) and International Association of Plumbing and Mechanical Officials (IAPMO) standards.
(5) Marking and identification.
(a) Prefabricated gravity grease interceptors shall be permanently and legibly marked with the following:
1. Manufacturer's name or trademark, or both.
2. Model number.
3. Capacity.
4. Month and year of manufacture.
5. Load limits and maximum recommended depth of earth cover in feet.
6. Inlet and outlet.
(b) NOTE: Grout shall not be used as a sealant for the inlet or outlet pipe at the sidewall.
(H) Grease interceptor cleaning/maintenance requirements:
(1) Grease interceptor, minimum sized, will be one thousand (1,000) gallon capacity, and maximum size will be two thousand (2,000) gallon capacity. If the FSE needs additional capacity, then grease interceptors will be installed in series.
(2) Cleaning: Grease interceptors must be pumped-in-full when the total accumulations of surface FOG (including floating solids) and settled solids reaches twenty-five percent (25%) of the grease interceptor's overall liquid depth. This criterion is referred to as the "25 percent rule". Grease interceptors shall be cleaned at a frequency of not less than once every ninety (90) days. Some FSEs may have to pump their grease interceptors on a thirty (30) day or sixty (60) day schedule to meet the "25 percent rule" criteria. At no time, shall the cleaning frequency exceed ninety (90) days unless approved by the city. Approval may be granted on a case-by-case basis after submission by the FSE of documentation establishing a proper basis for the proposed frequency.
(3) Partial pumping of interceptor contents or on-site pump and treatment of interceptor contents will not be allowed due to reintroduction of fats, oils and grease to the interceptor.
(4) The grease interceptor effluent-T shall be inspected during cleaning and maintenance and the condition noted by the grease waste hauler's company or individual conducting the maintenance. Effluent-T's that are loose, defective, or not attached must be repaired or replaced immediately.
(5) Grease interceptors must be "certified" annually by a grease waste hauler or plumber. Grease interceptor certification (Form A) must be completed and submitted to the city annually.
(6) All records related to the periodic cleaning of the interceptor must be retained onsite by the FSE in accordance with this policy.
(7) FSE facilities that permanently close for business shall completely pump out and clean all GIs on the premises and shall fill the GI with water. Pumping/cleaning of the GI prevents odors and deterioration of the GI from the weak acid FOG wastewater. Filling the out of service GI with water provides weight for the GI not to shift position, and provides a barrier from exposure to further deterioration.
(8) Grease trap/FOG interceptors shall be inspected by the food service establishment at a minimum quarterly, or more frequently as determined by Murray Sewer System. The FSE must comply with other local ordinance requirements and state laws concerning more frequent inspecting and cleaning activities. The authorized agent may require increased of maintenance and cleaning if the facility is within a problematic FOG area.
(I) Grease trap sizing, installation, cleaning and maintenance requirements:
(1) All grease traps shall have a flow control restrictor and be properly vented. Failure to have the flow restrictor and venting will be considered a violation.
(2) All new FSEs that are required to install grease traps must have Murray Sewer System and Murray Department of Planning approval prior to starting operations.
(3) Grease trap minimum size requirement is a twenty-five (25) gallon per minute/fifty (50) pound capacity trap, for Class 1 FSE only.
(4) Grease traps must have the Plumbing Drainage Institute certification, and be installed as per manufacturer's specifications by a certified plumber.
(5) No automatic or manual dishwasher shall be connected to an under the sink grease trap or floor grease trap.
(6) No automatic or manual drip or feed system additive (i.e. enzymes, emulsifiers, chemical additives, etc.) are allowed prior to entering the grease trap.
(7) A single grease trap device shall be installed for each significant kitchen fixture unit (i.e., each three (3) compartment sink). Murray Sewer System must approve the number of grease traps and connections to the grease traps prior to FSE operation.
(8) During cleaning of the grease trap, the flow restrictor shall be checked to ensure it is attached and operational.
(9) Grease traps will be completely cleaned of fats, oils, grease, and food solids at a minimum of every two (2) weeks. If the FOG and food solids content of the grease trap are greater than twenty-five percent (25%), then the grease trap must be cleaned every week, or as frequently as needed to prevent twenty-five percent (25%) of capacity being taken by FOG and food solids.
(10) Grease trap waste should be sealed or placed in a container to prevent leaking and then disposed, or hauled off site to an approved disposal location.
(11) The FOG interceptor shall be completely emptied by a grease trap/FOG interceptor cleaner whenever twenty-five (25%) of the operating depth of the FOG interceptor is occupied by fats, oils, grease and settled solids or a minimum of once every three (3) months, whichever is more frequent.
(12) All pre-rinse sinks, prior to dishwashers must be equipped with an appropriate drop-in, or below the sink strainer. This is to reduce the loading of food particles from entering any of the GCE approved by the authorized agent.
(13) All wastewater flows connected to the grease trap/FOG interceptors shall be screened to prevent solids from entering the treatment units. Screened solids shall be disposed of in accordance with applicable solid waste regulations.
(J) Automatic grease removal units/active grease recovery unit (AGRU).
(1) AGRU(s) shall be installed immediately downstream of each fixture of multiple fixtures listed in subsection (F)(6)(a) above.
(2) The AGRU shall be sized to properly pre-treat the measured or calculated flows for all connected fixtures or drains.
(3) The AGRU shall be constructed of corrosion-resistant material such as stainless steel or plastic.
(4) Solids shall be intercepted and separated from the effluent flow using an internal or external strainer mechanism, which shall be an integral part of the unit.
(5) The AGRU may not have a bypass valve built into the device.
(6) If the unit has a skimming device, automatic draw-off, or other mechanical means to automatically remove separated fats and oils this automatic skimming device shall be either hard wired or cord and plug connected electrically and controlled using a timer or level control.
(7) No fixture or drain other than those listed in subsection (F)(6)(a) of this policy shall be connected to the AGRU unless approved by the authorized agent.
(8) All installations shall be in accordance with local sewer ordinances, public health code, and state and local plumbing codes.
(9) All AGRUs shall be designed and installed in accordance with the manufacturer"s specifications. All AGRU shall be sized in accordance with the two (2) minute drain down formula from the Plumbing and Drainage Institute, Section G101, March 2010 or most recent edition.
(10) AGRUs shall be installed for ease of maintenance, replacement and inspection. The installation is subject to the requirements of all applicable local plumbing/building codes, state building codes, state plumbing codes, local ordinances, and approval by the local authorized agent and other laws of the municipality.
(11) The AGRU shall be fitted with an internal or external flow control device to prevent the exceedance of the manufacturer"s recommended design flow.
(K) Approved grease waste hauler program.
(1) To protect FSEs and the City of Murray sanitary sewer collection system and wastewater treatment plant, FSEs in the City of Murray sewer jurisdiction shall utilize City of Murray Approved Grease Waste Hauler companies for pumping/cleaning their grease interceptors. Approved grease waste hauler companies have signed the City of Murray Approved Grease Waste Hauler Agreement.
(2) Approved grease waste hauler companies must have an authorized representative sign and agree to the City of Murray Approved Grease Waste Hauler Agreement requirements. The Approved Grease Waste Hauler Agreement includes requirements for the grease waste hauler company to meet, including but not limited to the following:
(a) Allow City of Murray, or their designated representative, to audit FSE grease control equipment pumping records and grease disposal records.
(b) Require complete pump of grease interceptor contents. No partial pumping.
(c) Provide final disposal location for grease waste.
(d) Require that personnel that conduct grease control equipment cleaning attend and pass a City of Murray approved grease control equipment certification class.
(e) Require monthly reporting to WMD of FSE name, address, grease control equipment volume pumped, and date pumped for all FSEs serviced/pumped in the Murray sewer jurisdiction.
(L) FOG minimization and accidental discharge-safeguards.
(1) Renderable FOG shall not be disposed of in any sewer, septic tank, or FOG management equipment. Renderable FOG shall instead be properly recycled or disposed of in accordance with applicable state, federal and local laws.
(2) FSEs shall provide such facilities and institute such procedures as are reasonably necessary to prevent or minimize the potential for accidental discharge of fats, oils, and grease into the sewage collection system. This includes implementation of "best management practices" protocols.
(3) FOG scraped or removed from pots, pans, dishes and utensils shall be directed to the municipal solid waste stream for disposal.
(M) "Additives" prohibited for use as grease management and control.
(1) Additives include, but are not limited to, products that contain solvents, emulsifiers, surfactants, caustics, acids, enzymes, and bacteria.
(2) This chapter prohibits the use of enzymes, emulsifiers or other additives to enable oil or grease to pass through the FSE's grease trap or grease interceptor designed to remove oil and grease. If Murray Sewer System identifies FOG in the downstream sewer system from a FSE that is using an additive, Murray Sewer System may require the FSE to discontinue use of the additive and initiate an enforcement action.
(3) Additive use will not be a substitute for regular, required cleaning or pumping of grease control equipment.
(N) Right of entry - inspection and monitoring.
(1) Murray Sewer System and its respective authorized representatives shall have the right to enter the premises of FSEs to determine whether the FSE is complying with the requirements of the Sewer Ordinances. FSEs shall allow Murray Sewer System personnel and/or authorized representatives or agents, upon presentation of proper credentials, access to all parts of the FSE premises for the purpose of inspection, monitoring, and/or records examination. Unreasonable delays in allowing access to the FSE premises shall be a violation of this chapter.
(2) Murray Sewer System may require that the FSE install monitoring or additional pretreatment equipment deemed necessary for compliance with the sections of the sewer ordinance.
(3) Murray Sewer System and its authorized representative may conduct inspections of FSEs for GCE installation and maintenance, review of best management practices, and to gather information regarding FOG discharge impacts.
(4) Murray Sewer System designated representatives have the right to enter the FSE's premises to determine impacts to the city sewer system.
(O) Enforcement response plan for food service establishments and grease waste haulers. This enforcement response guide (ERG) for food service establishments (FSEs) and grease waste haulers (GWHs) was developed to ensure consistent enforcement response to all FSEs and GWH companies that operate in the City of Murray (city) jurisdiction. This ERG includes responses to fats, oils, and grease (FOG) related violations of the City of Murray Sewer Use Ordinance.
(1) Significant non-compliance for FSEs and GWHs.
(a) The city has defined "significant non- compliance for food service establishments" as violations that meet one or more of the following criteria:
1. Continued obstruction of the city sewer system that results in the city having to clean the sewer line segment four (4) or more times in a twelve (12) month period.
2. Causing or contributing to a second sanitary sewer overflow event or sewer line obstruction that causes a sewer back-up. The "second" event is based on any previous sanitary sewer overflow that occurred within two (2) years of the first event.
3. No response, or inadequate response, to two (2) notices of violation received within a twelve (12) month period, or no response to a total of four (4) notifications in the form of a non-compliance notification or notice of violation received in a twelve (12) month period.
4. Falsification of records, manifests, or other documents required under the City of Murray Sewer Use Ordinance, Section 18-220.
5. Any other violations of a pretreatment effluent limit, or City Sewer Use Ordinance prohibition that the city determines has caused, alone or in combination with other discharges interference or pass through at the city wastewater collection system or wastewater treatment plant.
(b) The city has defined "significant non- compliance for grease waste haulers" as violations that meet one or more of the following criteria:
1. Illegal dumping of grease waste, septic waste, portable toilet waste or other industrial/commercial waste into the City of Murray sanitary sewer system, storm water system, or any Murray area stream or tributary.
2. Chronic falsification of records, manifests, certifications, reports, disposal location, or other documents. "Chronic" is repeated incidents of falsification, or demonstration of intent to falsify information.
3. No response, or inadequate response, to two (2) City of Murray notices (e.g. warning letter, non- compliance notification, notice of violation) received within a twelve (12) month period to correct any deficiency or error identified by the City of Murray.
4. Any other violation or group of violations that the City of Murray determines will adversely affect the operation or implementation of the local pretreatment program, FOG program, or wastewater treatment plant and sewer collection system.
(2) Enforcement actions. Generally, an isolated instance of non-compliance or Category 1 violation can be met with a warning letter or non- compliance notification. Any Category 2 to Category 4 violations should be responded to with an enforceable order that requires a return to compliance by a specific deadline. Enforcement actions may include the following:
(a) Warning letter or verbal warning. Generally issued by an Environmental Compliance Inspector for a sporadic, non- chronic, or unintentional deficiency or error in reporting, procedures, or protocol required by the City Sewer Use Ordinance or Approved GWH Agreement.
(b) Non- compliance notification (NCN). Generally issued by an Environmental Compliance Inspector for Category 1 violations. A NCN informs the user that an action is required of the user within a specified timeframe designated by the city, or their designee, to correct the non-compliance on its own initiative or the non-compliance will require the city to escalate enforcement action against the user. The NCN documents the initial attempts of the city to resolve the non-compliance. A required response to a NCN is normally thirty (30) days.
(c) Notice of violation (NOV) generally issued by the FOG Program Coordinator or General Manager, the notice of violation (NOV) is an official communication from the city to the non-compliant user that informs the user that a violation of the city sewer use ordinance or the City of Murray Approved GWH Agreement has occurred. The NOV is issued when there is no response to a NCN, minor violation (non-chronic, not repeated) of the Murray Approved GWH Agreement, a reporting error or omission, or failure to provide the monthly report after an initial warning. The NOV includes a specific due date for a written response of corrective action that will be taken. A NOV does not contain assessment of penalties or cost recovery. Authenticated copies of NOVs may serve as evidence in judicial proceedings.
(d) Consent orders (CO). The City Manager may enter into consent orders, assurances of compliance, or other similar documents establishing an agreement with any user responsible for non- compliance. Such documents shall include specific action to be taken by the user to correct the non-compliance within a time period specified by the document. Such documents shall have the same force and effect as the administrative orders issued pursuant to this chapter and shall be judicially enforceable.
(e) Show cause hearing (SCH). The City Manager may order a user which has violated, or continues to violate, any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement, to appear before the City Manager and show cause why the proposed enforcement action should not be taken. Notice shall be served on the user specifying the time and place for the meeting, the proposed enforcement action, the reasons for such action, and a request that the user show cause why the proposed enforcement action should not be taken. The notice of the meeting shall be served personally or by registered or certified mail (return receipt requested) at least thirty (30) days prior to the hearing. Such notice may be served on any authorized representative of the user as defined in this chapter. A show cause hearing shall not be a bar against, or prerequisite for, taking any other action against the user.
(f) Compliance orders (CompOrd). When the City Manager finds that a user has violated, or continues to violate, any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement, the City Manager may issue an order to the user responsible for the discharge directing that the user come into compliance within a specified time. If the user does not come into compliance within the time provided, sewer service may be discontinued unless adequate treatment facilities, devices, or other related appurtenances are installed and properly operated. Compliance orders also may contain other requirements to address the non-compliance, including additional self-monitoring and management practices designed to minimize the amount of pollutants discharged to the POTW. A compliance order may not extend the deadline for compliance established for a pretreatment standard or requirement, nor does a compliance order relieve the user of liability for any violation, including any continuing violation. Issuance of a compliance order shall not be a bar against, or a prerequisite for, taking any other action against the user.
(g) Cease and desist orders (C&D). When the City Manager finds that a user has violated, or continues to violate, any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement, or that the user's past violations are likely to recur, the City Manager may issue an order to the user directing it to cease and desist all such violations.
(h) Administrative fines (AF). When the City Manager finds that a user has violated, or continues to violate, any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement, the City Manager may fine such user in an amount not to exceed ten thousand dollars ($10,000), or the maximum fine allowed under law, whichever is greater at the time of violation. Such fines shall be assessed on a per violation, per-day basis. In the case of monthly or other long-term average discharge limits, fines shall be assessed for each day during the period of violation. Refer to city sewer use ordinance for administrative fines unpaid charges or fines, and users desiring to dispute such fines protocols.
(i) Termination of service (ToS). In addition to the other provisions of this chapter, any user who violates the following conditions is subject to discharge termination:
1. Violation of city sewer use ordinance, or wastewater discharge permit conditions;
2. Failure to accurately report the wastewater constituents and characteristics of its discharge;
3. Failure to report significant changes in operations or wastewater volume, constituents, and characteristics prior to discharge;
4. Refusal of reasonable access to the user's premises for the purpose of inspection, monitoring, or sampling; or
(j) Civil penalties (CP).
1. A user who has violated, or continues to violate, any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement shall be liable to the city for a maximum civil penalty of ten thousand dollars ($10,000) or the maximum fine allowed under law, whichever is greater at the time of violation, but not less than one thousand dollars ($1,000) per violation, per day. In the case of a monthly or other long-term average discharge limit, penalties shall accrue for each day during the period of the violation.
2. The City Manager may recover reasonable attorneys' fees, court costs, and other expenses associated with enforcement activities, including sampling and monitoring expenses, and the cost of any actual damages incurred by the city.
3. In determining the amount of civil liability, the Court shall take into account all relevant circumstances, including, but not limited to, the extent of harm caused by the violation, the magnitude and duration of the violation, any economic benefit gained through the user's violation, corrective actions by the user, the compliance history of the user, and any other factor as justice requires.
4. Filing a suit for civil penalties shall not be a bar against, or a prerequisite for, taking any other action against a user.
(k) Criminal prosecution (CrimPro).
1. A user who willfully or negligently violates any provision of this chapter, an individual wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement shall, upon conviction, be guilty of a misdemeanor, punishable by a fine of not more than ten thousand dollars ($10,000) or the maximum fine allowed under law, whichever is greater at the time of violation, per violation, per day, or imprisonment, or both.
2. A user who willfully or negligently introduces any substance into the POTW which causes personal injury or property damage shall, upon conviction, be guilty of a misdemeanor and be subject to a monetary penalty, or be subject to imprisonment, or both. This penalty shall be in addition to any other cause of action for personal injury or property damage available under state law.
3. A user who knowingly makes any false statements, representations, or certifications in any application, record, report, plan, or other documentation filed, or required to be maintained, pursuant to this chapter, individual wastewater discharge permit, or order issued hereunder, or who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required under this chapter shall, upon conviction, be punished by a fine of not more than ten thousand dollars ($10,000) or the maximum fine allowed under law, whichever is greater at the time of violation, per violation, per day, or imprisonment, or both.
4. In the event of a second conviction, a user shall be punished by a fine of not more than ten thousand dollars ($10,000) or the maximum fine allowed under law, whichever is greater at the time of violation, per violation, per day, or imprisonment, or both.
(3) Penalty assessment. The city has categorized the various types of violations, and assigned a penalty range to each category. Penalty categories are determined by using the enforcement response table (attached). All penalty assessments MUST be approved and signed by the General Manager or his designee. Penalty amounts are considered to be an economic deterrent to the illegal activity. Penalty ranges have been designed to recover any economic benefit gained by the violator through non-compliance.
(a) CATEGORY 0 = NO PENALTY.
(b) CATEGORY 1 = $1 to $500.
(c) CATEGORY 2 = $1 to $1,000.
(d) CATEGORY 3 = $1 to $10,000.
(e) CATEGORY 4 - DIRECT LEGAL ACTION. Any penalties and/or costs to be assessed at the maximum penalty allowable by applicable law and included as part of the legal action.
(4) Food service establishment and grease waste hauler enforcement response guide table. Abbreviations for the FSE and GWH enforcement response guide table:
AF: | Administrative Fines |
CP: | Civil Penalties |
CO: | Consent Order |
CompOrd: | Compliance Order |
CrimPro: | Criminal Prosecution |
FOG: | Fats, Oils and Grease |
FSE: | Food Service Establishment |
GCE: | Grease Control Equipment |
GWH: | Grease Waste Hauler |
NCN: | Non-compliance Notification |
NOV: | Notice of Violation |
SCH: | Show Cause Hearing |
SNC: | Significant Non-compliance |
SPS: | Sewage Pumping Station |
SSO: | Sanitary Sewer Overflow |
WWTP: | Wastewater Treatment Plant |
FOOD SERVICE ESTABLISHMENT ENFORCEMENT RESPONSE GUIDE TABLE | ||
1. FOG Discharge to Sewer - Facility contributing FOG to downstream sewer, SPS, or WWTP. Classify degree of impact for appropriate response. | ||
Incident | Category Level | Action Taken |
A. Slight FOG impact (slight coating of FOG in POTW, ~5 to 15% of pipe with FOG impact) | 0 | Verbal Notification during inspection |
B. Moderate FOG impact (~20% to 33% of pipe with FOG impact) - 1st Occurrence | 1 | Issue NCN - 30-day response time |
Moderate FOG impact (~20% to 33% of pipe with FOG impact) - 2nd occurrence | 2 | Issue NOV - 30-day response time |
Moderate FOG impact (~20% to 33% of pipe with FOG impact) - 3rd occurrence | 3 | Meeting with FSE, Issue CompOrd. |
C. Heavy FOG impact (~33% or more of pipe with FOG impact) - 1st occurrence | 2 | Issue NCN - 30-day response time |
Heavy FOG impact (~33% or more of pipe with FOG impact, causing obstruction) - 2nd occurrence | 3 | Issue NOV, reimburse sewer cleaning costs to city |
Heavy FOG impact (~33% or more of pipe with FOG impact) - 3rd occurrence | 3 | Meeting with FSE, SCH, reimburse sewer cleaning costs to city and penalty $250. Escalation in penalty if continued occurrences. |
D. Heavy FOG impact (facility’s discharge caused a SSO event of back-up into city customers property or business). | 3, 4 | Issue SCH or CO, AF - reimburse cleaning costs to city, penalty may be assessed, can require FSE to re-submit grease inquiry information to city for GCE review |
2. Grease Control Equipment Components and Maintenance Non-Compliance | ||
Incident | Category Level | Action Taken |
A. Grease interceptor structural failure (baffle wall collapsed, walls deteriorated, tank leaking, infiltration/inflow in tank) - initial notification | 1 | Issue NCN - 30-day response time, if tank leaking notify Health Dept. and TDEC |
2. Grease Control Equipment Components and Maintenance Non-Compliance | ||
Incident | Categor y Level | Action Taken |
Grease interceptor structural failure (baffle wall collapsed, walls deteriorated, tank leaking, infiltration/inflow in tank) - 2nd notification, failure to comply with NCN | 2 | Issue NOV - 30-day response time |
Grease interceptor structural failure (baffle wall collapsed, walls deteriorated, tank leaking, infiltration/inflow in tank)- 3rd notification, failure to comply with NOV | 3 | Issue SCH, meeting with FSE, AF - daily penalty may be assessed |
B. Failure to install grease control equipment - initial notification | 1 | Issue NCN - 30-day response time |
Failure to install grease control equipment - 2nd notification, failure to comply with NCN | 2 | Issue NOV - 30-day response time |
Failure to install grease control equipment - 3rd notification, failure to comply with NOV | 3 | Issue SCH, meeting with FSE, AF - daily penalty may be assessed |
C. Failure to submit a completed grease interceptor or grease trap certification; or failure to respond or correct a failed grease interceptor or grease trap certification deficiency - 1st occurrence or notice | 1 | Issue NCN - 30-day response time |
Failure to submit a completed grease interceptor or grease trap certification; or failure to respond or correct a failed grease interceptor or grease trap certification deficiency - 2nd occurrence or notice, no adequate response to NCN | 2 | Issue NOV - 30-day response time |
Failure to submit a completed grease interceptor or grease trap certification; or failure to respond or correct a failed grease interceptor or grease trap certification deficiency - 3rd occurrence or notice, no adequate response to NOV | 3 | Issue CompOrd, meeting with FSE, AF - daily penalty may be assessed |
D. Grease control equipment not maintained (pumped or cleaned); (interceptor has > 25% FOG and solids, or > 90 days pump frequency; trap cleaned > monthly). Incident within 24- month period. | 1 | Issue NCN - 30-day response time |
Grease control equipment not maintained (pumped or cleaned); (interceptor has > 25% FOG and solids, or > 90 days pump frequency; trap cleaned > monthly). 2 incidents within 24- month period, or no response to NCN | 2 | Issue NOV - 30-day response time |
2. Grease Control Equipment Components and Maintenance Non- Compliance | ||
Incident | Category Level | Action Taken |
Grease control equipment not maintained (pumped or cleaned); (interceptor has > 25% FOG and solids, or > 90 days pump frequency; trap cleaned > monthly). 3 incidents within 24- month period, or no response to NOV | 3 | Issue CO - 30-day response time, AF - penalty may be assessed |
Grease control equipment not maintained (pumped or cleaned); (interceptor has > 25% FOG and solids, or > 90 days pump frequency; trap cleaned > monthly). 4 incidents within 24- month period, or no response to AO | 3 | Issue SCH, meeting with FSE. Penalty may be assessed. |
E. Need to repair or install proper components on the grease interceptor or grease trap | 0 | Issue NCN - 30-day response time |
Failure to repair or install proper components on the grease interceptor or grease trap, no response to NCN. | 1 | Issue NOV - 30-day response time |
Failure to repair or install proper components on the grease interceptor or grease trap, no response to NOV. | 2 | Issue CompOrd - 30-day response time, penalty may be assessed. |
Failure to repair or install proper components on the grease interceptor or grease trap, no response to AO. | 3 | Issue SCH, meeting with FSE. Penalty may be assessed. |
3. Recordkeeping and Reporting Violations | ||
Incident | Category Level | Action Taken |
A. No records of grease control equipment cleaning or maintenance at facility, or unable to locate records. 1 incident within 24-month period | 0 | Verbal warning during inspection |
No records of grease control equipment cleaning or maintenance at facility, or unable to locate records. 2 incidents within 24-month period | 1 | Issue NCN - 30-day response time |
No records of grease control equipment cleaning or maintenance at facility, or unable to locate records. 3 incidents within 24-month period, failure to comply with NCN. | 2 | Issue NOV - 30-day response time |
No records of grease control equipment cleaning or maintenance at facility, or unable to locate records. 4 incidents within 24-month period, failure to comply with NOV. | 3 | Issue CO, meeting with facility. If facility continues to be in compliance, penalty may be assessed. |
3. Recordkeeping and Reporting Violations | ||
Incident | Category Level | Action Taken |
B. Falsification of records or manifests | 3, 4 | CO and Administrative Penalties, Significant Non-compliance |
C. Failure of new facility, or an existing facility that upgrades their facility to notify city, or submit Grease Control Equipment Inquiry information. | 0 | Verbal notification, letter of warning and require GCE inquiry information. Escalate enforcement if no response. |
D. Failure to respond or report regarding any enforcement action from NOV or other has been issued. | 3 | Escalate enforcement actions. Range: CO to SCH/Administrative Penalties |
4. Other Non-compliance | ||
Incident | Category Level | Action Taken |
A. Failure to allow access for inspectors to adequately conduct GWH audit, inspect FSE and/or assess GCE | 3 | Meeting with FSE, CO if necessary |
B. Improper FOG waste disposal (evidence of intent, dumping to sanitary sewer, storm water system, or FSE grease control equipment) | 3, 4 | CO, CompOrd, administrative penalty, reimbursement of costs, legal action may be used. |
C. Facility using additives or chemicals that emulsify or otherwise cause FOG to be discharged to city sewer - initial notification | 1 | Issue NCN - 30-day response time |
Facility using additives or chemicals that emulsify or otherwise cause FOG to be discharged to city sewer - next notification, no response to NCN | 3 | NOV, penalty may be assessed. Escalated enforcement action if necessary. |
D. Safety hazard at grease control equipment area (i.e. missing manhole cover, manhole cover damaged or not made of material of suitable strength, danger to public) | 2 | Verbal warning during inspection, document on inspection form. Notify Health and Codes Dept. |
E. Facility in violation of numerical FOG limit - FOG concentration in excess of limit but less than 2 times the limit | 1 | Issue NCN - 30-day response time |
Facility in violation of numerical FOG limit - FOG concentration > 2 times the limit | 2 | Issue NOV - 30-day response time |
Facility in violation of numerical FOG limit - continued sample results of FOG concentration > 2 times the limit | 3 | Issue CO, meeting with FSE. Continued violations - SCH and AF - penalties. |
GREASE WASTE HAULER ENFORCEMENT RESPONSE GUIDE TABLE | ||
1. GWH Reporting and Recordkeeping Violations | ||
Incident | Category Level | Action Taken |
A. Failure to submit monthly reports or other required reports on time; isolated incident. | 0 | Warning letter, or email w/acknowledgment |
B. Failure to submit monthly reports on time; 3 times during 12-month period, or 2 consecutive months. | 2 | NOV w/required response to correct |
C. Failure to submit monthly reports or other required reports on time; chronic failure to submit on time, not corrected after warning letter and NOV. | 3 | CO w/removal from approved GWH list for period of 1 year |
D. No records or manifest for FSE GCE pumping or disposal information; isolated incident, filing or administrative error | 1 | NCN |
E. No records or manifest for FSE GCE pumping or disposal information; 4 or more records/manifests in 12-month period. | 2 | NOV |
F. No records or manifest for FSE GCE pumping or disposal information; 8 or more records/manifests in 12-month period. Chronic issue, evidence of ongoing inadequate recordkeeping. | 3 | CO w/removal from approved GWH list for period of 2 years. (SNC) |
G. Falsification of FSE GCE certification, pumping (including reported pumping volume), or disposal records; isolated incident. | 2 | NOV |
H. Falsification of FSE GCE certification, pumping (including reported volume), or disposal records, including evidence of partial pumping of GCE; chronic, several incidents with intent. | 3 | CO w/removal from approved GWH list for period of 2 years. (SNC) |
I. Failure to properly complete, or inadequate information on a FSE GCE certification, pumping record or manifest; isolated incident. | 0 | Warning letter, or email w/acknowledgment |
J. Failure to properly complete, or inadequate information on a FSE GCE certification, pumping record or manifest; 4 or more records in 12-month period. | 2 | NOV |
K. Failure to properly complete, or inadequate information on a FSE GCE certification, pumping record or manifest; chronic issue, several incidents, continuing not corrected | 3 | CO w/removal from approved GWH list for period of 1-year |
2. Waste Disposal Violations | ||
Incident | Category Level | Action Taken |
A. Improper hauled waste disposal, dumping/discharge into sanitary sewer at a non- designated disposal location, or indirectly dumping/discharge to a FSE GCE. | 4 | CO, or CompOrd w/$10,000 penalty plus sewer cleanup costs, including additional costs for any SPS or WWTP equipment or other impacts, and if necessary any SSO associated costs; removal from approved GWH list for period of 2 years; other legal action. |
B. Improper hauled waste disposal, dumping/discharge into storm water sewer, tributary, ditch, or other non-designated disposal location. | 4 | CO w/penalty plus city cleanup costs, state or EPA penalties and fine; removal from approved GWH list for period of 2 years; other legal action. |
3. Other Non-compliance | ||
Incident | Category Level | Action Taken |
A. Failure to allow City of Murray inspectors, or their authorized representative to adequately audit and inspect the GWH facility or files; or refusal to allow access or provide files; or undue delay in responding to information requested during an audit. | 3 | CO w/escalation of actions as necessary. |
B. Any other violation of the City Sewer Use Ordinance, or 40 CFR 403 and applicable pretreatment standards/regulations. | 2, 3 | Assess as per industrial user Enforcement Response Guide |
(P) Fees.
(1) The city may charge inspection, monitoring assessment, impact, and permit fees to the FSE to cover the cost of implementing and enforcing FOG provisions contained herein.
(2) Permit fees are renewed annually and are based upon an FSE classification as follows:
(a) Class 1: $100.
(b) Class 2: $150.
(c) Class 3: $200.
(d) Class 4: $250.
(e) Class 5: $300.
(3) Permit fees may be paid at the time the application for an FSE permit is initiated or renewed.
(Q) FOG treatment, disposal and resource recovery plan. Murray Sewer System, at the discretion of the Director of Public Works and Utilities or designee, may require the FSE to implement a FOG treatment, disposal and resource recovery plan. The plan may be implemented if there are any problems identified with FOG disposal, continued FOG obstruction in the sewer system, or inconsistent maintenance provided by grease waste haulers to prevent FOG discharges from FSEs. Any costs incurred by Murray Sewer System for implementing this program shall be passed on to the FSEs being serviced.
(R) Violations and enforcement action.
(1) Causes for enforcement action against a food service establishment (FSE) include, but are not limited to:
(a) Failure to clean or pump GCE;
(b) Failure to maintain GCE including inspection and installation of properly functioning effluent-T and baffles;
(c) Failure to install GCE, failure to certify the grease interceptor or trap;
(d) Failure to control FOG discharge from the FSE;
(e) Use of additives so that FOG is diluted and pushed downstream of the FSE;
(f) Failure to certify the grease interceptor or trap;
(g) Responsibility for sewer line obstructions;
(h) Responsibility for sanitary sewer overflow; or
(i) Any other failure of the FSE to comply with the terms and conditions of this policy.
(2) If FSE inspections and field investigations identify any fats, oils and grease interference or blockage at any point within the sewer system, including, but not limited to, the sewage pumping station and the water resource recovery facility (WRRF), that was caused by a particular food service establishment, then that FSE shall be required to reimburse Murray Sewer System for all labor, equipment, supplies and disposal costs incurred by Murray Sewer System for cleaning the interference or blockage, and any administrative fees incurred. The FSE will be billed directly by Murray Sewer System for such costs, and failure to reimburse these costs may result in termination of water and wastewater service.
(3) If an FSE fails to pump, clean or maintain its GCE after a notice of violation due date, Murray Sewer System may pump/clean the GCE to prevent additional FOG problems downstream. The FSE will be required to pay the cost of pumping and maintaining the FSE's GCE and the costs of all labor, equipment and supplies incurred by Murray Sewer System, in addition to any required administrative fees. Mechanical failure of a GCE will be considered a violation of this chapter pertaining to the construction and maintenance of pretreatment facilities and shall subject the FSE to penalties up to one thousand dollars ($1,000) per violation per day.
(4) Immediate discontinuance of water and/or wastewater service may result if the FSE presents an immediate endangerment to the health, welfare, or safety of persons or to the environment, causes significant interference with the WRRF or causes Murray Sewer System to violate any condition of its NPDES or KPDES permits. Service shall be reinstated when such conditions have been eliminated.
(5) The food service establishment enforcement response guide will be used to assist in determining the appropriate enforcement action.
(Ord. 2024-1867, passed 7-11-24)