13.08.150 Wastes deemed hazardous.

   A.   If any waters or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in Section 13.08.140 of this chapter, and which in the judgment of the governing body of the city may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the governing body of the city may:

      1.   Reject the wastes;

      2.   Require pretreatment to an acceptable condition for discharge to the public sewers; or

      3.   Require control over the quantities and rates of discharge.

   B.   If the governing body of the city 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 governing body of the city and the state, and subject to the requirements of all applicable codes, ordinances and laws. (Prior code § 4-3-47 (7))

13.08.160 Grease, oil and sand traps required when.

   Grease, oil and sand traps shall be provided when, in the opinion of the governing body of the city, 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 such traps shall not be required for private living quarters or dwelling units. All traps shall be of a type and capacity approved by the governing body of the city, and shall be located as to be readily and easily accessible for cleaning and inspection. Grease and oil traps shall be installed in all new filling stations, garages, restaurants and other new facilities wherein heavy discharge of grease and oil is to be expected. (Prior code § 4-3-47 (9))

13.08.170 Maintenance of pretreatment facilities.

   Where preliminary treatment or flow equalizing facilities are provided for any water or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense. (Prior code § 4-3-47 (10))

13.08.180 Control manholes.

   When required by the governing body of the city, the owner of any property serviced by a building sewer carrying liquid 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 accessible and safely located, constructed in such a manner as to prevent infiltration of ground and surface waters, and should be constructed in accordance with plans approved by the governing body of the city. 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. (Prior code § 4-3-47 (11))

13.08.190 Testing of wastes—Costs.

   Testing of an industrial waste will be performed by the governing body of the city. If ever the governing body of the city or the industry requires more frequent tests, then those tests will be paid for by the party requesting the analysis. (Prior code § 4-3-47 (8))

13.08.200 Testing—Standards and procedures.

   All measurements, tests and analyses of the characteristics of waters and wastes 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 the control manhole. The control manhole shall be located so that sampling of the industrial waste will be performed before discharge into the public sewerage system. 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. (The particular analyses involved will be determined whether a twenty-four-hour composite of all outfalls of a premises is appropriate or whether a grab sample or samples should be taken. Normally, but not always, COD and settleable solids analyses are obtained from twenty-four-hour composites of all outfalls whereas pHs are determined from periodic grab samples.) (Prior code § 4-3-47 (12))

13.08.210 Damaging public sewers prohibited.

   No person shall maliciously, wilfully or negligently break, damage or destroy, uncover, deface or tamper with any structure, appurtenance or equipment which is a part of the city sanitary sewer system. (Prior code § 4-3-42)