Every interceptor shall be of a proper design
and of an adequate size to prevent sand, silt, grit, mineral material,
petroleum, solvent, grease or oil from entering the sewer. The size
and design shall be as approved by the Building Inspector and Engineer.
Every interceptor shall be so constructed and
arranged that flowing wastes will not wash out or carry away any of
the grease, sand or petroleum solvents previously collected in such
interceptor. The Engineer may require screens to be placed in interceptors
to prevent rags from entering the public sewer.
Existing interceptors which, upon inspection, are found to be of inadequate size or of improper design shall be revised as directed by the Engineer within thirty (30) days after notice, upon penalty of immediate disconnection from the sewer and fines as provided in § 241-54. Notice of inadequate interception facilities shall be given by registered mail and shall be deemed effective as of the fifth day after receipt of said notice.
In the event a special type of interceptor is
required to adequately protect the sewer, a competent engineer shall
be retained to fully investigate the processes at the plant and provide
adequate facilities for the retention of undesirable wastes by interceptors
or other suitable means. The proposed design shall be submitted to
the Engineer for his approval prior to installation and connection
to the sewer.
The Engineer may adopt, in writing, such test
requirements as he finds necessary to determine the collecting efficiency
of various types and kinds of interceptors and to establish the rate
of flow, grease- or sand-retention capacity or other rating thereof.
The Engineer may revise from time to time, as he finds necessary,
such test requirements.
