Garage drains shall be intercepted before entering
the sewer by a suitable catch basin properly trapped.
A. Where and when required. An intercepter or separator
shall be installed in the drainage system of each establishment when
in the opinion of the local authority a hazard exists from the careless
disposal of waste material, accidental spills or overflow of grease-bearing
flammable or other deleterious materials.
B. Oil interceptors. An approved oil separator shall
be installed in the drainage system of gasoline service stations,
garages, where car washing and/or gasoline storage is maintained,
or any place of manufacturing where volatile inflammable liquid is
on hand for use in the process and which by accident or otherwise
may be admitted to the drainage system.
C. Grease interceptors. An approved grease interceptor
and separator of adequate capacity shall be installed in the waste
line leading from sinks, drains or other fixtures in the following
establishments when, in the opinion of the administrative authority,
a hazard exists; restaurants, hotels kitchens or bars, factory, cafeterias
or restaurants, clubs or other establishments where grease can be
introduced to the drainage system in quantities that can effect line
stoppage or hinder sewage disposal.
D. Sand interceptor. Sand and similar interceptors shall
be so designed and located as to be readily accessible for cleaning
and shall have a trap seal of not less than six inches.
E. Design, venting and accessibility. All interceptors
shall be so designed that they will not become air-bound. They shall
be vented and so located as to be readily accessible for cleaning.
Cellar or basement floor drains must connect
into a deep seal trap so constructed that it can be cleaned readily,
and under proper conditions sewer air excluded.
No steam exhaust, blowoff or drip pipe from
a steam boiler shall connect with the sewer, drain, soil or waste
pipe. Such pipe must discharge into a tank or condenser, from which
an outlet to the drain may be provided, properly tapped.