Borough of Sea Bright, NJ Sand and Oil Separators; Grease Traps

Facilities for the following classifications of discharges to the Borough system shall require pretreatment. The pretreatment shall guarantee that the effluent will be in conformance with the rules and regulations of the Northeast Monmouth County Regional Sewerage Authority, to whom Sea Bright is a customer. The service agreement between the Borough of Sea Bright and NEMCRSA requires that the Borough of Sea Bright adopt rules and regulations for acceptable wastes.

Establishments with existing sand and oil separators, grease traps and trash enclosures, will not have to fully comply with §§ 170-4, 170-5 and 170-7, provided that the Plumbing Subcode Official finds the units acceptable and said establishment causes no problem to the Borough's sewer system. Establishments will be required to fully comply with §§ 170-4, 170-5 and 170-7, as well as the entire article, when there is a change in ownership/mercantile license.

The Plumbing Subcode Official will provide an alternative to any of the units mentioned below where a hardship exists.

§ 170-2 Service stations, garages, marinas, beach clubs, and other locations.

Oil and sand separators shall be installed at all garages, service stations, automotive, motorcycle and marine repair shops, beach clubs and any other location where oil and sand have the capability of entering the sanitary sewer system. The Plumbing Subcode Official shall decide, upon evidence provided and a site inspection, whether the facility has the capability of having oil or sand enter the sanitary sewer system.

All sand and oil separators shall be of a type and capacity in compliance with local plumbing codes. The interceptors shall be located so as to trap all sand and oil and keep it from entering the sanitary sewer system. They shall be located so as to be easily accessible for cleaning by the owner and inspection by the Borough of Sea Bright. The separator shall be sized to allow for the maximum discharge expected during peak periods. The minimum size separator shall be 1,000 gallons. A flow-control device shall precede the separator so its maximum capacity cannot be exceeded. The separator shall be located outside the building it serves. Other locations will be considered only when there is demonstrated hardship.

Waste oil and waste antifreeze must be stored in containers approved by regulatory agencies having jurisdiction for such use and clearly marked with the words "waste oil" or "waste antifreeze." The collected material must be disposed of by a registered New Jersey Department of Environmental Protection waste hauler invoiced as per New Jersey Department of Environmental Protection rules and regulations governing transport and disposal of this classification of waste. Invoices shall be made available to Borough personnel for review during inspections.

Any person who handles waste oil and/or antifreeze must apply annually for a permit approving the methods of disposal of such waste oil and/or antifreeze.

§ 170-3 Food preparation areas.

A grease interceptor shall be mandatory at all restaurants, bars, delicatessen, diners, beach clubs and other locations where food is being prepared and oil and grease have the capability of entering the sanitary sewer system. The Plumbing Subcode Official shall decide, upon evidence submitted and a site inspection, whether the facility has the capability of having oil or grease enter the sanitary sewer system.

The trap or interceptor shall be of a type and capacity in compliance with the local plumbing codes and these rules and regulations. The interceptor or trap shall be, when practical, located outside the building it serves as close to the fixture as possible. The interceptor or trap shall be sized for the maximum discharge to be expected during peak operating periods. The interceptor shall be preceded by a flow-control device to prevent the interceptor or trap from exceeding its design capacity. The interceptor or trap shall be installed at a location where it is readily accessible for maintenance by the owner and periodically inspected by Borough personnel. The minimum size grease interceptor or trap shall be 1000 gallons.

§ 170-4 Sizing and designing the units.

Sand and oil separators. Sand and oil separators will be sized/designed as outlined in Chapter 6 of the National Standard Plumbing Code or by Testing and Rating Procedure for Grease Interceptors with Appendix of Sizing and Installation Data of the Plumbing and Drainage Institute, standard PD-1-G101. Plans with supporting design data shall be submitted to the Borough Plumbing Subcode Official for review, or in the case of new units, for review and approval prior to construction. The minimum size sand interceptor shall be 1,000 gallons. The surface settling rate for a sand interceptor is very critical. The calculations submitted must demonstrate that the sand particles have adequate time to settle in the unit proposed. The plans shall show the location of the unit on site and the dimensions, material and proposed schedule for maintenance. Upon approval of the new units by the Borough Plumbing Subcode Official, a permit to connect the unit to the sanitary sewer system will be issued.

Grease interceptors and grease traps shall be sized based on the peak flow through the unit. The sizing and design will be based on the criteria outlined in Section 6 of the National Standard Plumbing Code or by Testing and Rating Procedure for Grease Interceptors with Appendix of Sizing and Installation Data of the Plumbing and Drainage Institute, standard PD-1-G101. Design calculations and plans shall be submitted to the Borough Plumbing Subcode Official for review, or in the case of new units, for review and approval prior to construction. The interceptor shall have a retention capacity of not less than two pounds of grease for each gallon per minute of peak flow. The submitted information must include design plans showing the location of the unit, the materials and dimensions and a proposed maintenance schedule. Upon approval of new units by the Plumbing Subcode Official, a permit to connect the unit to the sanitary sewer system will be issued.

§ 170-5 Grease trap construction.

Grease traps are generally made of precast concrete and are purchased completely assembled, although they may also be commercial steel units specifically manufactured for grease interception. If the unit is steel, it shall be installed underground in a separate concrete chamber. Very large units may be field constructed. Grease traps shall be double-compartment versions. A manhole cover(s) shall be installed at ground level for inspection and maintenance purposes.

Grease traps shall be buried so as to intercept the building sewer. They must be level, located where they are easily accessible for cleaning and close to the wastewater source. Efficient removal of grease is very important, and a two-chamber trap shall be used which has a primary (or grease-separating) chamber and a secondary (or grease storage) chamber. By placing the trap as close as possible to the source of wastewaters, where the wastewaters are still hot, the separating grease at the surface of the first chamber can be removed by means of an adjustable weir and conveyed to the separate secondary chamber, where it accumulates, cools and solidifies. This decreases the requirement for cleaning and allows better grease separation in the first chamber.

The inlet, outlet and baffle fittings are typically of T design with a vertical extension 12 inches (30 centimeters) from the tank floor and reaching well above the waterline.

The manhole covers shall be of gastight construction and be designed to withstand expected loads.

§ 170-6 Maintenance and cleaning.

All grease, oil and sand interceptors require periodic maintenance and cleaning. Experience will show the optimum cleaning cycle, but generally each interceptor should be cleaned on a weekly or monthly basis. Existing grease interceptors of very limited capacity may require cleaning on a daily basis. The use of enzymes or other chemicals to attempt to keep the grease in suspension shall not be used. Experience has shown that these compounds only deposit the grease downstream from the trap in the sanitary sewer system. Any blockages caused by the illegal use of enzymes will be removed by the party responsible at their cost. The owner of an interceptor must show evidence to the Borough personnel during their periodic inspection that the interceptor has been cleaned on a regular basis. The establishment shall provide either: a contract for yearly cleaning and evidence that the contract is in force; or an invoice for each cleaning event.

If Borough personnel find during their annual inspection that the interceptor is not being properly maintained and grease is entering the sanitary sewer system, the owner will be responsible to clean the system or the Borough will perform the work and bill the owner. If there is continued evidence of lack of maintenance at a facility, the Borough reserves the right to disconnect the violator from the sewer system. All costs to disconnect and reconnect will be borne by the property owner.

§ 170-7 Trash enclosure.

If the site plan approval process requires the installation of a trash enclosure or an existing facility has a trash enclosure and such enclosure is to contain a floor drain that is to connect to the Borough sewerage system, the trash enclosure shall be constructed on a concrete pad with the top elevation six inches above the surrounding elevation. The total area of the pad shall not be larger than 225 square feet. The floor drain shall be a type that does not have a removable grate and shall be followed by a grease interceptor of a sufficient size as described above. The grease interceptor shall be installed in an open area with the cover at ground surface for maintenance purposes. The owner of the facility shall present to the Borough a contract for the periodic cleaning and maintenance of the interceptor. The outlet of the interceptor shall be provided with an inspection and sampling manhole where it either connects to the existing on-site lateral or at the point where it connects directly to the Borough's system.

The installation of all new and all existing on-site facilities shall be inspected by the local subcode official, who will certify to the Borough that they are in accordance with these rules and regulations.

If a hose bib is to be installed within the trash enclosure, it shall be of the spring-loaded type so that the water cannot be left running and overburden the Borough's system. It is the intention of this subsection to provide an adequate solution to a possible health hazard and also provide adequate protection to the system.

§ 170-8 Fees.

[Amended 1-19-1999 by Ord. No. 96-99; 2-3-2004 by Ord. No. 1-2004]

Any establishments within the Borough of Sea Bright where grease, oil or sand have the capacity to enter the sanitary sewer system shall be required to pay an annual plumbing inspection fee of $100. The Borough will bill each establishment in January, and this fee must be paid no later than March 15. A contract and evidence that the contract is in force or invoices showing that the facilities are being properly cleaned and maintained shall be presented with payment.

[Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II)]

The Plumbing Subcode Official shall make a yearly inspection of all establishments with the potential of grease, oil or sand to enter the sanitary sewer system. If a facility is a constant problem for the Borough, and the owner is not cooperating with the Borough in finding a solution to the grease, oil or sand problems, and making the necessary modifications to their facilities, and the Borough personnel are required to make repeated inspections, then the Borough will charge an additional fee of $50 for each inspection above the initial one covered by the aforementioned fee until the problem is solved.

§ 170-9 Violations and penalties.

Any establishment not in compliance of the requirements with this article shall be subject to fines not to exceed $500 per day for the duration of their noncompliance or violation of this article. They shall also be responsible for all necessary and reasonable costs the Borough of Sea Bright incurs in correcting any and all problems caused by the noncompliance or violation of this article.