The interceptor must be cleaned whenever 25 percent of any chamber becomes filled with FOG or solids. Over the past few years, all of the model plumbing codes have changed their requirements regarding grease traps and grease interceptors. Establishments that are not in compliance with those requirements may be subject to re-inspection fees and/or a fine. Under the Water Resources Act 1991, it is an offence to cause or knowingly permit any poisonous, noxious or polluting matter or . 1003.9 Venting of interceptors and . A grease interceptor located outside the building that is a part of an individual sewage disposal system is not subject to the requirements of this chapter. Once the grease interceptor is provided, it becomes reasonable to route the waste from any number of fixtures through . Install the grease trap as close to the source (kitchen area) as possible. Each fixture discharging to a grease interceptor shall be trapped and vented according to this chapter. CONFIGURATION • There should be clear space above the water level to allow for venting. "recipe" book; instead, it provides "minimum" requirements. Julius Ballanco P.E., CPD. • A space is needed at the bottom for sludge accumulation. For example, you need at least 40 lb for 20 gpm. The outlet tee may extend into the riser for venting . Austin Water's Office of Industrial Waste (IW) modified its grease interceptor policies in April 2021. Kitchen items. Indirect waste. Fats, oils and grease (FOG) build up in the sewer lines and restrict flow, causing blockages. Horizontal wet venting. Trap installation for three-compartment sinks . 3. There are no specified legal requirements that state how you should manage your interceptors. Grease Traps Grease Interceptors Toll free: 800.541.8004 Hours 9-4 EST. Grease Interceptors & Sampling Manhole Standards. Bmp to Control FOG Discharges to the Sanitary Sewer . Vertical wet venting. Water temperatures must be less than 120 degrees prior to entering grease trap. All businesses must prevent pollution. Grease interceptors are large, heavy and contain a wide variety of contaminants. The Wastewater Reclamation Authority (WRA) implemented the Fat, Oil, and Grease (FOG) Ordinance in 2006 to help decrease the number of grease-related sewer blockages, backups, and sanitary sewer overflows (SSOs). • Total gallon capacity not to exceed 2½ times the gpm flow rate of interceptor - 20 gpm interceptor X 2½ = 50 gallons maximum discharging into the interceptor 10 SIZING GRAVITY GREASE INTERCEPTORS • Gallon capacity (volume) of the interceptor is based on fixture units discharging into the interceptor Each grease interceptor installation must preclude siphoning and provide air relief. 2. 4715.0910 traps described. The definition of a grease trap is " a trap in a drain or waste pipe to prevent grease from passing into a sanitary sewer lines and system.". Refer to Table 1 below for guidance on the appropriate sizing of your grease trap. This standard may be met by one tank with two compartments or by two single compartment tanks in series. 4715.1110 grease interceptors for commercial buildings 4715.1120 oil and flammable liquids . Sewer blockages and SSOs cause a direct threat to human health and the environment by causing sanitary sewer water to back up into basements and/or businesses and overflow into the . No single in-line grease trap shall serve more than two separate fixtures. 2. venting and any Ashland Grease Interceptor according to manufacturer's recommendations, specified requirements and state and or local codes. For Grease Interceptor sizing, please reference the Sizing Guide or the Plumbing & Drainage Institute Standard PDI-G 101. 1003.9 Venting of interceptors and separators. LOCATION AND TRIBUTARY DISCHARGE SOURCES The acceptable level of AVFOG and FOG in wastewater as established by the authority with jurisdiction in your area will determine the size grease interceptor required. grease interceptor. Hydromechanical Grease Interceptors (HGIs) can be located inside or outside the facility and are required to have an approved type of vented flow restrictor. Grease interceptors shall be equipped with an accessible discharge sampling port with a minimum six inch diameter, which shall extend from the grease interceptor to at least the finished surface grade. Do not purchase a grease interceptor without obtaining a building plan approval including an Industrial Waste approval letter specifying the size and design of the interceptor that will be required. from the outlet. Grease interceptors should have all grease removed as frequently as necessary to avoid exceeding the interceptor's rated capacity. However, there are broader environmental obligations that do apply to interceptors. 6. Definitions . The vent on the flow control is an air intake. The grease trap/grease interceptor shall be constructed with a minimum of two baffles. Tyler Pipe / Wade Division • P.O. The 3,600L size is for trade waste customers, like restaurants, takeaways, and car washes, that use oils and fats in their business. Grease Interceptor Vault (GI) $ 0.00 Requirements for grease interceptors On October 26, 2012 we implemented a bylaw that establishes new maintenance requirements and limits on the amount of grease and solids that can flow out of grease interceptors and into sewers. For example, you need at least 40 lb for 20 gpm. 6. Grease interceptors shall be equipped with devices to control the rate of water flow so that the water flow does not exceed the rated flow. See the City's Grease Intereceptor Installation and Sizing Policy. Where: Waste Flow Rate With dishwasher - 6-gallon (22.7-L) flow Without dishwasher - 5-gallon (18.9-L) flow Single-service kitchen - 2-gallon (7.6-L) flow Food waste disposer - 1-gallon (3.8-L) flow Retention Time Commercial kitchen waste Dishwasher - 2.5 hours Single-service kitchen The Endura Grease Interceptor was designed and built to last and comes with a 10-year warranty (valid only when the warranty card is filled out and returned to the manufacturer). Plans submitted for a food service establishment should include details for the installation and venting of the new interceptor and sampling manhole. Does the interceptor require a vent? We may ask you to install additional pre-treatment. (1) Every oil interceptor shall be provided with 2 vent pipe s that, (a) connect to the interceptor at opposite ends, (b) extend independently to open air, (c) terminate not less than 2 000 mm above ground and at elevations differing by at least 300 mm, and (d) do not connect to each other or any other vent pipe. Approved Units Table Grease interceptors must be maintained and inspected regularly. You also need a grease recovery device that costs $3500 to $6000 estimated. 2. A grease interceptor, correctly designed to separate light density substances from wastewater, will not by itself govern or regulate the flow of water through the interceptor at all times to sufficiently assure the "flotation" separation of the substances which are to be intercepted at maximum efficiency. January 1, 2004. Definitions . Grease arrestors must be installed by licensed plumbers according to our trade waste requirements and the manufacturer's instructions. On the other hand, if the grease trap is large, i.e., 750 to 1500 gallons, then the estimated cost required for its installation is between $4000 to $8500. The flow control device is designed with an VENTING Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps, to retain a water seal and to prevent siphoning. The flow-control device shall be vented and terminate not less than 6 inches (152 mm) above the flood rim level or be installed in accordance with the manufacturer's instructions. However, there are broader environmental obligations that do apply to interceptors. Ladle off the layer of grease and oil floating on top of the water. In general, grease traps range from a minimum capacity of 2.8 m3 to a maximum capacity of 4.7 m3. Grease arrestors reduce the amount of greasy waste flowing into the wastewater system, by allowing fats, oil and grease to rise to the top and solids to sink to the bottom. Venting is not required for the sampling manhole or outside interceptor. Acting as a filtration system, the grease trap captures fats, oils, greases, and starches in wastewater before they enter the sewer system, where they can cause damage and harm. grease interceptor. Congratulations on your purchase of the Endura Grease Interceptor. 7. Oils ones are clearly discussed in the Code. Box 2027 • Tyler, TX 75710 • (903) 882-5511 INTERCEPTOR PERFORMANCE An "auto fry" is defined as an enclosed, ventless, self-contained individual-serving deep fryer. 4715.2510 protection of trap seals. • A rectangular interceptor is believed to be the optimum shape. • A sample port allows easy sampling. Gray water recycling requirements have moved to the body of the code in a new Chapter 13. . Description. Island vent. VENTING Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps, to retain a water seal and to prevent siphoning. Tyler Pipe / Wade Division • P.O. The Department of Environmental Protection (DEP) routinely sends inspectors to verify that such businesses have appropriate and well-maintained grease interceptor systems. Definitions Hydromechanical Grease Interceptors (HGIs) can be located inside or outside the facility and are required to have an approved type of vented flow restrictor. In many situations they are required to trap these fats before they enter the local stormwater system or . Section 890.510 - Grease Interceptor Requirements. One interceptor to serve multiple fixtures is recommended only where fixtures are located close together. Proper installation of a grease interceptor is critical to its efficient operation. . Hydromechanical grease interceptors shall be provided an approved, readily accessible flow control Gravity grease interceptors shall not be installed in a part of the building where food is handled Each business establishment shall have an interceptor that serves only that establishment unless otherwise approved by the Post "NO GREASE" signs above all kitchen sinks to remind . Grease traps/grease interceptors are to be installed at a minimum distance of 10 ft. from sinks and dishwashers to allow for adequate cooling of the wastewater. Please see below for the updated requirements. The interceptor must be cleaned whenever 25 percent of any chamber becomes filled with FOG or solids. Similarly, the interceptor vent must be at least 3 inches above the static water level of the tank. mechanical grease interceptor(s) shall be cleaned, however, all hydro mechanical grease interceptors shall be opened, inspected, cleaned, and maintained at a minimum of once per week. Combination waste and vent systems. Do NOT pour any grease into sinks, floor drains or mop sinks. minimum size for a grease trap is 1,000L and maximum size is 5,000L. Grease Interceptors Best Management Practices To Maintain . A grease trap should be designed to allow 1 hour ALL ELEVATIONS SHALL BE SUBMITTED FOR REVIEW TO DISTRICT PRIOR TO INSTALLATION. Dishwasher. Using a strainer, scrape the bottom of the trap to remove all non-floatable food particles and debris. 1. Size the grease trap to meet your maximum hourly flow now and into the future. GREASE INTERCEPTOR REQUIREMENTS Lakeway Municipal Utility District Continued, Page 5 of 5 If an interceptor is not cleaned out regularly . An undersized grease trap will not treat your trade wastewater. Air admittance valves complying with standard ASSE 1049 are now allowed for venting chemical waste systems. The quality of reclaimed or gray water supplied to trap seal primer valves shall be in accordance with the requirements of the manufacturer of the trap seal primer valve. Hydromechanical Grease Interceptors (HGIs) can be located inside or outside the facility and are required to have an approved type of vented flow restrictor. In order to prevent sewage overflows into the environment, LASAN has developed a comprehensive program to reduce the discharge of FOG to the . All businesses must prevent pollution. Jensen Precast carries a large line of Grease Interceptors available for commercial applications. A grease trap does not act as a "fixture trap". 4715.0900 fixture trap requirements. The retention capacity of grease interceptors (in pounds) must be at least twice the numerical value of flowrate through the unit (in gallons per minute). Section XIV-1005 - Interceptors and Separators A. Grease traps have been in use since the late 19th century and remain a common choice for establishments with commercial kitchens. PDI G101 mandates the installation of an vented external flow control. 2. The grease trap/grease interceptor shall be constructed with a minimum of two baffles. Grease Interceptor ‐ FOG control device connected to a building grease waste drain or located between one or more fixtures (e.g., three‐compartment . If you do provide a vent, how do you size it? The purpose of the grease interceptor is to reduce Animal and Vegetable Fats, Oils and Greases (AVFOG or FOG) in wastewater to acceptable levels. Home » Changes To Grease Requirements Julius Ballanco, PE. The upstream vent must not be placed between the air intake and the grease interceptor. A grease interceptor or automatic grease removal device shall be required to receive the drainage from fixtures and equipment with greaseladen waste located in food preparation - areas, such as in restaurants, hotel kitchens, hospitals, school kitchens, bars, factory shall be required by the authority having jurisdiction where they are necessary for the proper handling of liquid wastes containing grease, flammable wastes, sand, solids, acid or alkaline substances, or other ingredients harmful to the building drainage system, … Grease Interceptor. Our Products. Four-compartment sink. There are no specified legal requirements that state how you should manage your interceptors. (1) Grease interceptor compartments. After cleaning, the baffles can be rinsed off in the sink that flows to the trap. The one time I did, it was a big bugger that was on the main leaving a restaurant. Plumbing systems for institutions or commercial establishments in which grease, fats, culinary oils or similar waste products from kitchens or food processing areas are wasted, or in which grease, fats or culinary oils are wasted in connection with utensil, vat, dish or floor cleaning processes shall include grease interceptors. Clean the bypass vent with a flexible probe or wire. Section 890.510 Grease Interceptor Requirements . 1. There is no reference of the vent being one pipe dia. 7. MIFAB® SUPER-750 gravity grease interceptor with 750 U.S. gallons of liquid holding capacity has a limited lifetime warranty and is made in the U.S.A. out of seamless, rotationally molded High Density Polyethylene with 3/8" uniform wall thickness. 4715.0920 trap protection. Columnists Changes To Grease Requirements Julius Ballanco, PE. Most inspectors would say yes because the unit itself is trapped and a trap needs a vent, but if you ask the inspectors in Los Angeles City, they would say no, due to the fact that each fixture upstream of the trap is individually vented. The one time I did, it was a big bugger that was on the main leaving a restaurant. With the exception of one, I haven't done any additional venting for a grease trap, the inlet is the sink, and the outlet line is vented by the trap arm. The number and type of fixtures and fittings you have connected to the grease trap will influence the size requirements of your grease trap. Also referred to as grease traps or grease recovery devices, our grease interceptors are designed for storage of greases/oils as well as solids before entering a wastewater disposal system. Grease interceptor tanks must be designed and constructed with a minimum of two compartments. Interceptors or separators shall be provided for the proper handling of liquid wastes containing grease, oil, flammable waste, sand, solids or other ingredients harmful to the building drainage system, the sewerage system or sewage treatment plant or processes except when, in the opinion of the plumbing official, they are not . Three-compartment sink. 1. Based on reader feedback, it appears this approval step is not required most of the time (53% no to 47% yes). Interceptors. Oldcastle Infrastructure's grease interceptors are manufactured in a variety of standard and custom sizes. Grease interceptors, when combined with Best Management Practices (BMPs), will . Where grease interceptors are shared by more than one FSE, the building owner shall be the responsible party for record keeping and . Hydromechanical grease interceptor. Smoothie rinser. 78. CONFIGURATION 1. . Kitchen equipment and all waste drains shall be shown on the plan. Under the Water Resources Act 1991, it is an offence to cause or knowingly permit any poisonous, noxious or polluting matter or . 7.4.4.3. 2. 3. . A grease interceptor is not required where only one auto . SPS 382.34(5) - 6/29/01 Is a grease interceptor required for an "auto fry"? The FOG also interferes with the operation of sewage pumping stations resulting in increased maintenance costs. The acceptable level of AVFOG and FOG in wastewater as established by the authority with jurisdiction in your area will determine the size grease interceptor required. INTERCEPTOR SHALL BE PLACED ON A MINIMUM OF 6" TYPE I BEDDING MATERIAL, COMPACTED TO 95% RELATIVE COMPACTION. Box 2027 • Tyler, TX 75710 • (903) 882-5511 INTERCEPTOR PERFORMANCE Additional requirements for grease interceptor tanks. A grease trap/grease inceptor is in simple terms a plumbing fixture that contains decomposing food waste, bettering the sewer system. (see 7.5.5.2.(6).) 1. Without a properly sized flow control, the flow Where a capacity of more than 4.7 m3 is required, two or more grease traps may be placed in a series. §. Plumbing systems for institutions or commercial establishments in which grease, fats, culinary oils or similar waste products from kitchens or food processing areas are wasted, or in which grease, fats or culinary oils are wasted in connection with utensil, vat, dish or floor cleaning processes shall include grease interceptors. Floor drain vents. Hydro-mechanical and Gravity are the new terms for the two general types of grease interceptors. We vented it like an oil interceptor with a vet on each end, 2". Grease traps/grease interceptors are to be installed at a minimum distance of 10 ft. from sinks and dishwashers to allow for adequate cooling of the wastewater. Grease interceptors have played an important role in preventing accumulated FOG from damaging the public infrastructure by collecting it at the source. The City shall inspect hydro-mechanical grease interceptors as necessary to assure compliance with this division as well as proper Grease Interceptor Maintenance Suggestions We suggest that you use a drain maintainer or cleaner like EDM+ Enzymatic Drain Maintainer from Noble Chemical, or Noble Chemical Orange Peel Citrus Solvent Cleaner as part of a regularly scheduled cleaning and maintenance routine for your grease trap. Intercepts and traps grease. Grease Interceptor Liquid Capacity, UPC 2003. . A kitchen in a B&B with more than nine rooms will need installation of a grease interceptor. Solidified grease can cause stoppages downstream in piping . Inspect unit for defects and make sure it meets specified requirements. The interceptor must be cleaned whenever 25 percent of any chamber becomes filled with FOG or solids. GREASE INTERCEPTORS ARE NOT INTENDED FOR THE INTRODUCTION OF DOMESTIC SEWAGE. 2. 3. With the exception of one, I haven't done any additional venting for a grease trap, the inlet is the sink, and the outlet line is vented by the trap arm. The City advises that residents also regularly maintain and clean the interceptor or trap! d) Sizing - The minimum size of grease traps shall be based on the maximum rate of flow of all fixtures discharging into the grease trap multiplied by a retention factor of 1.5 minutes. A final requirement is that water flowing through a grease interceptor must not have a temperature above 180°F. As the waste stream flows through the orifice in the flow control device negative pressure is created, drawing in air from the air intake which is intended to mix with the waste water as it enters the grease interceptor aiding in separation efficiency. Code to have a grease interceptor or trap. 3. Flow restrictors slow the flow of water entering the grease interceptor. A final requirement is that water flowing through a grease interceptor must not have a temperature above 180°F. The Professional Engineer shall use sound engineering judgment and consider (Section 61G15, Florida Administrative Code): . OIL, SAND, and SEDIMENT INTERCEPTORS ZURN PLUMBING PRODUCTS GROUPSPECIFICATION DRAINAGE OPERATION, 1801 PITTSBURGH AVENUE, ERIE, PA 16502 PHONE 814/455-0921 FAX: 814/454-7929 WEBSITE: www.zurn.com Page 4 TYPICAL INSTALLATION Vent Connection Vent Concrete Pit with Cover Z1186 OIL INTERCEPTOR Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps, to retain a water seal and to prevent siphoning. A grease trap is a device that can be . The purpose of the grease interceptor is to reduce Animal and Vegetable Fats, Oils and Greases (AVFOG or FOG) in wastewater to acceptable levels. Water temperatures must be less than 120 degrees prior to entering grease trap. . We vented it like an oil interceptor with a vet on each end, 2". 1. Interceptor is designed for above or below ground installation and includes an adjustable lid . Note: The CTC recommends that due to the possibility of the interceptor being siphoned out, fixture vent requirements should apply to the outlet. (1) Except for suites of residential occupancy, where a fixture discharges sewage that includes fats, oils or grease and is located in an area where food is cooked, processed or prepared, it shall discharge through a grease interceptor. 4715.2500 selecting size of vent piping. Oils ones are clearly discussed in the Code. A minimum 2500 lb grease capacity unit is required for a space up to 3500 square feet. Prep sink. According to the estimate, the average cost required to install a grease trap of 10 to 100 gallons is $250 to $1500. See the City's Grease Intereceptor Installation and Sizing Policy. Likewise, many states (but not all . If you use long pipe runs, they can become clogged with grease. The interceptor inlet must be near an elevation that is one half of the height of the tank's static . All waste lines . Remove oils and fats from entering the stormwater system with a grease trap/oil interceptor. Remove any baffles and scrape clean. (7) Inspection. The size of the grease trap depends on the anticipated flow rate, water temperature, and grease concentration. (2) Except as provided in Sentence (3), oil interceptors shall be provided as follows: DO NOT INSTALL INTERCEPTOR BACKWARD. The definition of "interceptor" is in Section 1.4.1.1. There are three main types of grease traps: Passive . Tell-tale floor drains: General. Grease arrestor installation guidelines. tank bottom. A grease interceptor intended to serve as a fixture trap in accordance with the manufacturer's installation instructions shall be . interceptors ( clarifiers) (including grease, oil, sand, solid interceptors, etc.) Recycle waste cooking oil, dispose in Grease Recycle Bin or Container. Grease traps shall be installed and vented in accordance with the IPC. The type of information that is submitted, according to our survey results, ranges from calculations to grease trap sizing formula on drives to venting requirements. When required. The retention capacity of grease interceptors (in pounds) must be at least twice the numerical value of flowrate through the unit (in gallons per minute). Invariably the triple-compartment sink for pot washing is used as the litmus to determine if a grease interceptor is required, and the waste from it is required to be routed through either a local or central grease interceptor. A single larger unit is required if the estimated grease production exceeds 2500 lbs in 90 days. The Dallas City Code was amended in October 2007 and requires all grease traps and interceptors be pumped out at least every 90 days or when it is 25% full of solids and grease. At minimum, use an average of 0.171 meals per square foot per day, a grease production value of 0.0455 lbs per meal and 90-day pump out. 4715.2520 vent stacks and stack vents.