8409-93 Amending Articles 1 & 2 of Chapter 17 Pretreatment Requirements the Public Sewers

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' T 1 a f" (9) (7) Materials which exert or cause: a. Unusual concentrations of inert S .S . (such as, but not limited to, Fullers earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate) . b. Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions) . c. Unusual S .S . , CBOD, BOD, Ammonia-Nitrogen, Phosphorus, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works . d. Unusual volume of flow or concentration of wastes constituting "slugs" as defined herein. (10) (8) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent can not meet the requirements of other receiving waters .will be compromised. (11) (9) It shall be unlawful for any person to place, deposit, permit to be deposited, or discharge in any manner whatsoever, any substance into a sewer at a point different than the proposed sewer connection to the sanitary sewer system. (c) (d) 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 this article, and which in the judgment of the Board may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or otherwise create a hazard to life or constitute a public nuisance, the Board may: (1) Require new industries or industries with significant increase in discharges to submit information on wastewater characteristics and obtain prior approval for discharges . For purposes of this requirement, flow increases of twenty percent (20%) or greater, or the discharge of any previously unreported pollutants shall be deemed significant . (2) Reject the wastes in whole or in part for any reason deemed appropriate by the City. (3) Require pretreatment of such wastes to within the limits of normal domestic sewage as defined. (4) Require control of flow equalization of such wastes so as to avoid any "slug" loads or excessive loads that may be harmful to the treatment works . (5) Require payment of a surcharge on any excessive flows or loadings discharged to the treatment works to cover the additional costs of having capacity for and treating such wastes . If the Board permits the