Grease, oil and sand interceptors shall be provided by the owner of any industrial, commercial or institutional establishment, at his or its sole cost, when required by this Township, for the proper handling of liquid wastes containing excessive grease, inflammable wastes, sand or other harmful substances. All interceptors shall be of a type and capacity approved by this Township and constructed or installed at a satisfactory location in accordance with plans approved by this Township prior to installation or commencement of construction. It shall be the responsibility of the owner to properly clean or have the same cleaned and maintain such interceptors. Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter. The Township's objective in setting the limits is to restrict industrial waste discharges of the above-described concentrations which will not harm either the sewer system or the treatment plant, will not have an adverse effect on the receiving stream, or will not otherwise endanger lives, limb or public property or constitute a nuisance. The Township may set lower or higher limitations in specific cases if, in the opinion of the Township, said actions will be consistent with the above-stated objectives. In the setting of such lower or higher limitations, the Township will give consideration to such factors as the volume of wastewater flow in relation to flows and velocities in the sewers, degrees of treatability of the waste and other pertinent factors. The Township reserves the right to reevaluate and revise the limitations as needed. The more stringent of EPA or Commonwealth requirements and limitations shall apply in any case where either is more stringent than those presently in force. An industrial user classified as a categorical industrial user shall be required to meet the EPA Categorical Standards, if such standards are more stringent than the local discharge limitations.