§ 86-45. Sand and oil/grease interceptors.  


Latest version.
  • (a)

    Requirement. All users involved in the preparation of food for commercial purposes shall provide oil/grease interceptors or traps. Additionally, any user who generates a wastewater which contains greater than the quantity of oil and grease regulated under sections 86-40 through 86-50, and provided that the excess oil and grease is floatable and can be effectively removed in an oil/grease interceptor or trap, then such user will be required to install an oil/grease interceptor.

    (b)

    Design criteria.

    (1)

    For restaurants and other eating establishments. All sand and oil/grease interceptors used in conjunction with restaurants or other eating establishments shall have a capacity of 15 gallons per seat, except that no grease trap shall be smaller than 750 gallons or larger than 3,000 gallons. Also oil/grease interceptors must be baffled and have an inspection station.

    (2)

    For facilities other than eating establishments. All sand and oil/grease interceptors used in conjunction with facilities other than eating establishments shall have a capacity that will provide not less than ten minutes nor more than 30 minutes retention time at the peak eight-hour flow rate. Flow through velocities shall not exceed one foot per second at the peak eight-hour flow rate.

    (3)

    Maintenance. All grease, oil and sand interceptors or traps shall be maintained by the user at his expense, in continuously efficient operation at all times. In the maintaining of these interceptors, the owner shall be responsible for the proper removal and disposal by appropriate means of the captured materials, and shall maintain records of the dates and means of disposal which are subject to review by the county. The frequency of removal shall be such as to ensure that no overflows of oil, grease or sand into the wastewater system ever result.

    (4)

    Proper disposal of collected materials. Under no circumstances shall the collected materials ever be returned to the wastewater system.

(Res. No. 98-3, § 3-2.3, 3-10-1998)