1. No person shall discharge or cause to be discharged into any sewer line substances, materials, waters or wastes if it appears likely in the opinion of the Borough, or its designated agent, that such wastes can harm the sewage disposal system or the treatment processes or equipment, or can otherwise endanger life, limb, public property or constitute a nuisance.
2. In forming their opinion as to the acceptability of these waters, the Borough, or its designated agent, will give consideration to such factors as to the qualities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the wastewater treatment plan, degree of treatability of wastes in the sewage treatment plan, and other pertinent factors.
3. In all cases, the Borough, or its designated agent, shall require compliance by the user with all aspects of latest applicable ALCOSAN Pretreatment Standards.
4. See provision Part 4 of the ALCOSAN Pretreatment Standards.
A. Plumbing to be in Good Repair. Every building or room occupied or used as a food preparation facility or restaurant shall be well drained. All soil pipes, waste pipes, drains or other plumbing fixtures shall be of adequate size to enable the passage of any waste intended to pass through it to the main public sewer. All drains, sewers, waste and soil pipes, traps and water in gas pipes shall, at all times, be kept in good repair and order so that no gases or odor shall escape therefrom and so that the same shall not leak, and all vent pipes shall be kept in good order and repair and free from obstruction.
B. Installation of Grease Interceptors and Grease Traps.
(1) Every building, room or space or part thereof used as a food preparation facility or restaurant, whether new or existing, shall install or cause to be installed, if not already installed, a grease interceptor or grease trap. The type of installation shall be determined by the total fixture flow through rate of potential grease laden fixtures discharging through the building sewage lines as determined by the Allegheny County Health Department (ACHD) Plumbing Division. For flow through rates 35 gpm or less, an internal grease trap may be installed in certain existing structures used as food preparation facilities and restaurants. For flow through rates exceeding 35 gpm, an external, underground grease interceptor must be installed in all new structures, major remodeling or renovation of existing structures, or changes of use involving food preparation facilities or restaurants.
(2) Said grease trap or grease interceptor shall be installed at an appropriate location along the sewer line between the food preparation facility or restaurant and the line’s entry in the main public newline. An inspection site tee shall be installed between the interceptor discharge and connect to the public sewer system. All installations shall be in accordance with the ACHD Plumbing Code and Regulations. No solid waste devices, such as waste grinders, disposals, potato peelers, etc. shall discharge through the grease trap or grease interceptor. Only potential grease laden fixtures may discharge through the trap or interceptor.
(3) All new food preparation facilities and restaurants shall be required to install an exterior, underground grease interceptor of a minimum 1,000 gallon capacity, regardless of the flow through rate.
(4) In all existing food preparation facilities and restaurants there shall be installed a grease interceptor or grease trap as determined by the flow through rate, as detailed above, if not already installed. In existing facilities where it is determined by the Borough that a grease trap is not sufficient, the Borough may require that a grease interceptor (as detailed above) be installed. Such insufficiency shall be evidenced by excessive amounts of grease being discharged into the public sewer system by a facility. All existing food preparation facilities and restaurants shall, at a change of ownership or remodeling or renovation thereof, install an exterior, underground grease interceptor of a minimum 1,000 gallon capacity. In all existing structures, buildings or parts thereof in which there is a change of use or occupancy to that of a food preparation facility or restaurant there shall be installed a grease interceptor of a minimum 1,000 gallon capacity, regardless of the flow through rate.
(5) All interceptors shall be of a type and capacity approved by the wastewater superintendent and shall be located under cover and so as to be readily and easily accessible for cleaning and inspection. Interceptors shall not be located so as to receive rainwater or unpolluted run-off.
(6) Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight and equipped with easily removable covers which, when bolted in place, shall be gastight and watertight.
C. Maintenance of Grease Interceptors and Grease Traps.
(1) All grease interceptors and grease traps shall be maintained and kept in good working order at all times. The interceptor or trap shall limit the amount of grease discharge into the public sewer system to levels not exceeding those permitted by ALCOSAN. Oil/grease discharges shall not exceed 200 ppm downstream of the interceptor or tap.
(2) It shall be the duty and responsibility of all owners, lessees or agents of all food preparation facilities and restaurants to, at a minimum of annually, inspect the grease interceptor or trap. A written record shall be kept of all inspections. The inspection record shall, at a minimum, list the name (inspector and company), address and phone number of the inspection/disposal company, the method and frequency of cleaning scheduled and the date of the cleaning/inspection. Such records shall be immediately presented to the Borough upon request. A more frequent cleaning/inspection schedule may be ordered to be performed by the facility when it is determined by the Borough that the facility is charging excessive amounts of grease to the public sewer system.
(3) Grease and all debris removed from a trap or interceptor shall only be disposed of at a facility approved by the Allegheny County Health Department (ACHO) and/or the Pennsylvania Department of Environmental Protection (DEP). Under no circumstances shall this material be deposited into another sanitary or storm sewer.
(4) Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his/her expense, in continuously efficient operation at all times. Interceptors shall be cleaned at least once a week.
(5) Failure by the owner to properly clean and maintain these units shall be considered sufficient cause for disconnection of premises from the public sewer, or punitive actions as provided for in this Part.
D. Rate of Flow Control. 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.
CAPACITY OF GREASE INTERCEPTORS
Total flow-through rating | Grease retention capacity |
(Gallons/Minute) | (Pounds) |
Total flow-through rating | Grease retention capacity |
(Gallons/Minute) | (Pounds) |
4 | 8 |
6 | 12 |
7 | 14 |
9 | 18 |
10 | 20 |
12 | 24 |
14 | 28 |
15 | 30 |
18 | 36 |
20 | 40 |
25 | 50 |
35 | 70 |
50 | 100 |
(Ord. 926, 4/8/2015, §3)