§ 47-5. Pretreatment requirements.

A. 

If any waters or wastes are discharged or are proposed to be discharged to the public sewers which, in the judgment of the Superintendent, may have a deleterious effect on the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Superintendent may reject the wastes, require pretreatment to an acceptable condition for discharge to the public sewers, and/or require control over the quantities and rates of discharge. If the Superintendent permits the pretreatment or equalization of waste flows the design and installation of the plants and equipment shall be subject to the review and approval of the Superintendent, and subject to the requirements of all applicable codes, ordinances and laws.

B. 

Grease, oil and sand interceptors shall be provided when in the opinion of the Superintendent they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand or other harmful ingredients, except that interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the Superintendent and shall be located as to be readily and easily accessible for cleaning and inspection.

C. 

Where preliminary treatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continually in satisfactory and effective operation by the owner at his expense.

D. 

When required by the Superintendent, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole, together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessibly and safely located and shall be constructed in accordance with plans approved by the Superintendent. The manhole shall be installed by the owner at his expense and shall be maintained by him so as to be safe and accessible at all times.

E. 

All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in this ordinance shall be determined in accordance with the latest edition of "Standard Methods for the Examination of Water and Wastewater," published by the American Public Health Association, and shall be determined at the control manhole provided, or upon suitable samples taken at said control manhole. In the event that no special manhole has been provided, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property.