The Town of Nantucket encourages all users of the sanitary sewer system to take voluntary steps to reduce the amount of fats, oils and grease that is poured, drained or washed down drains into the sanitary sewer system.
In the interpretation and application of Article IV of Chapter 336, the following words and phrases shall have the indicated meanings:
BEST MANAGEMENT PRACTICES (BMPs)
Actions or schedules of activities, prohibitions of practices, maintenance procedures and other management practices to implement the requirements of this regulation.
BLACK WATER
Wastewater containing human waste from sanitary fixtures such as toilets and urinals.
FATS, OILS AND GREASE (FOG)
Organic polar compounds derived from animal and/or plant sources that accumulate in the sewer system. These are substances that may solidify or become viscous at temperatures above 32° F. These substances are detectable and measurable using analytical procedures established in 40 CFR 136.
FOOD SERVICE ESTABLISHMENT (FSE)
Any establishment, business or facility engaged in preparing, serving or making food available for consumption. Single-family residences are not a FSE; however, multi-residential facilities may be considered a FSE at the discretion of the Nantucket Board of Health (BOH). FSEs are 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 Industrial Classification System (NAICS) 722515 or mobile food vendors as defined by NACIS 722330; bed-and-breakfast establishments as defined by NACIS 72119.
B. 
CLASS 2: Limited-service restaurants (a.k.a., "fast-food facilities") as defined by NACIS 722513, except fast-food with a food line that is heavily fried and a history of FOG discharges that interfere with the sanitary sewer system, and catering as defined by NACIS 722320.
C. 
CLASS 3: Full-service restaurants as defined by NACIS 722110.
D. 
CLASS 4: Buffet and cafeteria facilities as defined by NACIS 72212.
E. 
CLASS 5: Institutions (schools, hospitals, prisons, etc.) as defined by NACIS 722310, but not to exclude self-run operations.
GRAY WATER
Refers to all other wastewater other than black water.
GREASE CONTROL EQUIPMENT (GCE)
A device for separating and retaining wastewater FOG prior to the wastewater exiting the FSE property and entering the sanitary sewer system. GCE includes grease traps and grease interceptors, or other devices approved by the Nantucket BOH.
GREASE INTERCEPTOR
An interceptor whose rated flow exceeds 50 gallons per minute (gpm) and is located outside the building.
GREASE RECYCLE CONTAINER
A container used for the storage of yellow grease for recycling.
GREASE TRAP
An interceptor whose rated flow is 50 gpm or less and is typically located inside the building.
GREASE, BROWN
Fats, oils and grease that are discharged to the grease control equipment.
GREASE, YELLOW
Fats, oils and grease that have not been in contact with or contaminated from other sources such as water, wastewater or solid waste and can be readily recycled.
INTERCEPTOR
A device designed and installed to separate and retain for removal, by automatic or manual means, deleterious, hazardous or undesirable matter from normal wastes, while permitting normal sewage or waste to discharge into the drainage system by gravity flow.
INTERFERENCE
A discharge that, alone or in conjunction with a discharge or discharges from other sources, inhibits or disrupts the sanitary sewer collection operation, the treatment processes or operations, or the sludge processes, use or disposal, or exceeds the design capacity of the treatment works or collection system.
TEE (INFLUENT AND EFFLUENT)
A T-shaped pipe attached to the horizontal influent and effluent pipes of a grease interceptor and extending downward into the trap to depths specified by design, which on the influent side forces influent flow into the center of the trap and prevents floating FOG from escaping the effluent pipe.
A. 
Town of Nantucket Sewer Regulation § 336-6E(2) prohibits the discharge of "fats, wax, grease or oils that may solidify or become viscous at temperatures between 32° F. and 150° F." Additionally, § 336-26 sets out penalties for violating the Sewer Regulations.
B. 
Uniform State Plumbing Code (248 CMR 10.00). "Grease traps and interceptors shall be installed in the following establishments to prevent the discharge of fats, oils, and grease into the drainage system: 1. restaurants; 2. cafeterias; 3. hotels; 4. hospitals; 5. institutional facilities; 6. factories; 7. clubs; 8. bars where food is prepared and served; and 9. all commercial kitchens; food and meat packing and processing establishments; super markets, bakeries, and other establishments where fats, oils and grease may be introduced into the building sanitary drainage system in quantities that can cause waste line obstruction or hinder sewage disposal . . . Grease traps and interceptors may be installed on individual fixture waste branches."
A. 
Any user who discharges animal and vegetable fat, oil and grease in the volume or form which interferes with the operation of the sanitary sewer system may be subject to enforcement actions as specified in § 336-26, Violations and penalties, of the Nantucket Sewer Regulations and may be billed for cleanup charges incurred by the Nantucket Sewer Department when that user's discharge causes operation and maintenance problems in the sanitary sewer system such as blockages, backups, overflows, interruption of service, excessive FOG accumulation in lift stations and pipes and other FOG-related problems that are tracked to that user's discharge. A schedule of fees can be found in Article II, Exhibit 2, specifically the tables titled "Service Request (Non-Town Issue) During Normal Business Hours Monday Thru Friday 7-3:30" and "Service Request (Non-Town Issue) After Normal Business Hours, Holidays and Weekends."
A. 
All existing and new FSEs shall effectively control the discharge of FOG into the sanitary sewer system. A Class 1 FSE may do this through the use of restaurant industry best management practices such as those published by the National Restaurant Association. See: http://www.foodserviceresource.com/FORMS%20&%20PDFS/FOG_ToolKit.pdf. If best management practices fail to prevent sanitary sewer system interferences, Class 1 FSEs shall install grease control equipment (GCE) as specified in § 336-34, or by the Nantucket BOH.
B. 
All new Class 2 through 5 FSEs shall install grease control equipment in sizes specified in § 336-34 or by the Nantucket BOH and properly maintain that equipment in such a way as to prevent interference with the sanitary sewer system.
C. 
Existing FSEs that do not meet these minimum sizes may continue to use existing GCE and/or best management practices if the discharge from the FSE is not interfering with the sanitary sewer system and the Nantucket BOH gives written permission stating that that the current GCE and practices are preventing interference with the sanitary sewer system. Upon written notice from the Nantucket BOH that the existing GCE or BMPs are inadequate to protect the sanitary sewer system from interference, the FSE shall comply in accordance with § 336-26, Violations and penalties, of the Nantucket Sewer Regulations.
D. 
All FSEs with GCE shall maintain records of cleaning and maintenance of that equipment. Records include, at a minimum, the date of cleaning or maintenance, company or person conducting the cleaning or maintenance, and the amount of grease and water removed from the equipment. A grease waste hauler completed manifest will meet this requirement.
E. 
Yellow grease, such as fryer oil, shall not be discharged into the GCE or into stormwater conveyances. The use of yellow grease recycling containers is encouraged.
F. 
Owners of commercial property will be held responsible for wastewater discharges from FSE leaseholders on their property.
G. 
All FSEs shall provide access to Town utility personnel (after proper identification) for the purpose of inspection of GCE, kitchen equipment and practices, and any cleaning and drain remediation products which relate to the wastewater and FOG discharge.
A. 
Any FSE, either new or existing, that is found by the Nantucket BOH of Nantucket Sewer Department to be interfering with the sanitary sewer system may be asked to install GCE that is larger than the minimum size and take other steps to stop that interference.
B. 
Existing FSEs that do not meet these minimum sizes may continue to use existing GCE and/or best management practices if the discharge from the FSE is not interfering with the sanitary sewer system and the Nantucket BOH gives written permission stating that that the current GCE and practices are preventing interference with the sanitary sewer system. Upon written notice from the Nantucket BOH that the existing GCE or BMPs are inadequate to protect the sanitary sewer system from interference, the FSE's violations shall be penalized in accordance with § 336-26, Violations and penalties, of the Nantucket Sewer Regulations.
C. 
Additionally, FSEs that discharge the water from dishwashing machines through a grease interceptor shall install a GCE which is larger than the minimum to allow for cooling of the discharge and thereby prevent discharge of FOG into the sanitary sewer system.
D. 
Grease traps. These small, under-the-counter units shall be installed according to drawings provided by the Nantucket BOH and shall include a vented flow restrictor prior to the trap. Dishwashing machines shall not be installed onto these units. Failure to follow this requirement will render the trap ineffective and the FSE shall be instructed to install a large external grease interceptor.
A. 
Additives include but are not limited to products that contain solvents, emulsifiers, surfactants, caustics, acids, enzymes and bacteria. They may be inorganic or organic in origin.
B. 
The use of additives is prohibited, with the following exceptions:
(1) 
Additives may be used to clean FSE drain lines but only in such quantities that will not cause FOG to be discharged from the GCE to the sanitary sewer or cause temporary breakdown of the FOG that will later recongeal in the downstream sewer pipes.
(2) 
If a product used can be proven to contain 100% live bacteria, with no other additives, a request for permission to use the product shall be made to the Nantucket BOH. The request must be submitted in writing with a full-disclosure Material Safety Data Sheet and a certified statement from the manufacturer.
This regulation empowers the Nantucket BOH and the Nantucket Sewer Department to jointly develop and adopt reasonable operating policies to facilitate the implementation of this regulation. These policies may include, but are not limited to: FSE inspections, GCE sizing and maintenance, FSE wastewater discharge testing and monitoring, approval, or disapproval of GCE servicing vendors (grease waste haulers), permitting of FSEs, and other operating policies needed to protect the sanitary sewer system from interference from FOG.
This regulation authorizes the Sewer Commission to establish fees (in accordance with § 336-15, Other fees and charges) to offset costs associated with the implementation of this regulation. Possible fees include: inspection fees, permitting fees, surcharge fees for high-strength discharges, cleanup fees associated with FOG cleanup within the sanitary sewer system, and other fees necessary for implementation of this regulation.
The Nantucket BOH may use FSE permits as a way of implementing this regulation and may further require the permitting or certification of GCE service and pumping vendors.
A. 
Violators of this regulation may be issued FSE permits, subject to penalties pursuant to § 336-26, Violations and penalties. Violators may face fines, have water and/or sewer service terminated, and the Town may seek further remedies as needed to protect the collection system, treatment plant, receiving stream and public health. Repeated or continuous violation of this regulation is declared to be a public nuisance and may result in legal action against the property owner and/or user, and the service line may be disconnected from the sewer main. Upon notice by the Nantucket BOH that a violation has or is occurring, the user shall immediately take steps to stop or correct the violation.
B. 
The Town may take any or all of the following remedies:
(1) 
In an emergency situation where the Nantucket BOH has determined that immediate action is needed to protect the public health, safety or welfare, a public water supply or the facilities of the sewerage system, the Nantucket BOH may discontinue water service or disconnect sewer service.
(2) 
Commence a civil action in Superior Court or any other court of competent jurisdiction seeking damages and/or civil penalties against the user, and further seeking an injunction prohibiting further violations by user.
(3) 
Seek further remedies as needed to protect the public health, safety or welfare, the public water supply or the facilities of the sewerage system.
If any section, phrase, sentence or portion of this regulation is held invalid or unconstitutional for any reason by any court of competent jurisdiction, such portion shall be deemed a separate, distinct and independent provision; and such holding shall not affect the validity of remaining portions thereof.
This regulation shall take effect from and after its passage, the welfare of the Town requiring it.