Legal Documents of Jefferson City

Grease interceptors shall be constructed in accordance with JCSCD's standards and shall have a minimum of two (2) compartments with fittings designed for grease retention. All grease removal devices or technologies shall be subject to the written approval of JCSCD. Such approval shall be based on demonstrated removal efficiencies of the proposed technology. JCSCD's standard drawing for grease interceptors is shown in Appendix A.

Access to grease interceptors/traps shall be available at all times, to allow for their maintenance and inspection. Access to grease interceptors shall be provided by two (2) manholes terminating one (1) inch above finished grade with cast iron frame and cover, constructed so that all surface runoff of rain water or storm water is prevented from entering the trap or sanitary sewer system.

Interceptor discharges shall not exceed 100/mg/L of oil and grease. In areas where additional weight loads may exist, the grease interceptor shall be designed to have adequate load-bearing capacity (example: vehicular traffic in parking or driving areas).

Wastewater discharging to a grease interceptor shall enter only through the inlet pipe of the interceptor. Each grease interceptor shall have only one (1) inlet and one (1) outlet pipe.

The minimum capacity of a grease trap shall be one thousand (1,000) gallons. Each establishment may install a larger capacity trap not to exceed three thousand (3,000) gallons per interceptor, or interceptors may be installed in series if needed to meet the discharge requirements of 100 mg/L of oil and grease. In order to approximate the capacity required to meet the discharge requirement, establishments can use EPA sizing formula. Grease traps will have a capacity of not less than one thousand (1,000) gallons nor exceed a capacity of three thousand (3,000) gallons. If the calculated capacity using the EPA sizing formula exceeds three thousand (3,000) gallons, multiple units in series may be installed. See Appendix B for example of formula.

Grease interceptor designs represent minimum standards for normal usage. Installations with heavier usage require more stringent measures for which the user is responsible and shall pay the costs to provide additional measures if required by JCSCD. JCSCD reserves the right to evaluate interceptor sizing on an individual basis for establishments with special conditions, such as highly variable flows, high levels of grease discharge, or other unusual situations that are not adequately addressed by the formula.

Any changes or upgrades to an existing or new food service establishment, which, directly or indirectly, affect grease discharge to the JCSCD collection system must be reported to JCSCD. (as added by Ord. #2008-10, Aug. 2008)