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HomeMy WebLinkAboutCC RESO 10,529RESOLUTION NO. 10,529 RESOLUTION ESTABLISHING REGULATIONS FOR THE CONTROL OF INDUSTRIAL WASTES WHEREAS, the Director of Building and Housing has pre- pared regulations for the administration of the provisions of City Ordinance No. 1289 covering the inspection, analysis, and disposal of industrial wastes and pursuant to Section 4 of said city ordinance; and WHEREAS, the provisions of said section require that such regulations be consistent with the general policy established by this Council and be approved by this Council; and WHEREAS, the City Manager has recommended approval of the following regulations; NOW, THEREFORE, BE IT RESOLVED, that the regulations adopted by the Director of Building and Housing and hereinafter listed are consistent with the general policy established by this Council and are approved by this Council, to wit: ARTICLE I. 1. The following materials shall be excluded from the sewerage system. a. Gasoline, cleaning solvent, fuel, oil, etc. These are highly inflammable compounds and serious damage due to explosions of these liquids or their vapors have occurred within sewerage systems. b. Ashes, sand, cinders, rocks, etc. These inor- ganic compounds add excessive solid loadings on the sewerage system causing unnecessary cleaning and maintenance. c. Tar, plastics and other water insoluble viscous materials. These compounds do not break down by bacterial action and add to the solid loading of a sewerage system. d. Mineral oils, lubricating oils, etc. do not decompose in the normal course of sludge digestion. They cause potential fire hazards throughout the sewerage system, cause excessive cleaning and impose an unnece- ssary solid loading upon the sludge system. e. Feathers, hair, rags, etc. These materials cause excessive maintenance throughout the sewerage system. Feathers and hair do not readily digest in sludge digestion processes and create excessive matt- ing on top of the decomposing sludge. f. Metal, broken glass, shavings, etc. These materials will readily plug up sewer lines, pumps and appurtenant equipment. Unshredded garbage. Large pieces of unshredded g• garbage cause sewer lines and pumps to clog and excessive maintenance will occur. Garbage ground in domestic and industrial grinders to a size of 1/4 inch or less is satisfactory. h. Wastes which contain or result in the production of toxic, corrosive, explosive and malodorous gases. ARTICLE II. The provisions of the following sections and the values herein set forth shall not be regarded or construed as regulating or limiting the quantity or characteristics of any specific wastes which may be received into the sewerage system but shall serve as a guide in the administration of City Ordinance No. 1289 and sec- tions thereof, of the City of National City, regulating the use of the public sewerage system for the purpose of determining, general, the acceptability of waste for admission into the system. In considering the following sewage characteristics, dilution effect of the sewage at the point of discharge or affected part of the system, and whether or not unusual atten- age the any in sewer- tion or expense would be required to handle such material in the sewerage system shall be taken into consideration. 1. The admission into the public sanitary sewers of any waste or water having an average daily flow greater than two (2) per cent of the average daily flow at the sewage treatment plant shall be subject to review. 2. Sea water and salt water brines containing more than 10% salt should be excluded if their discharge interferes with the operation of thesewerage system. Large volumes of sea water cause excessive generation of malodorous gases due to the salt content. The salt content is not desirous if fertilizer is produced or water is reclaimed from the sewage into which the discharge is made. Storm drains should receive this water. 3. The temperature of industrial waste discharged into the sewerage system should not be above 140° F. 4. Industrial wastes having a grease and oil concen- tration in excess of 200 ppm. will be considered individually. If the sewerage system can safely receive said wastes, industrial wastes having a higher grease and oil concentration could be allowed. 5. The pH of industrial wastes. shall average between 5.5 to 9.0 daily. The maximum variation on a temporary basis during any twenty-four period shall not be less than 5.0 or greater than 10.0. 6. Industry discharging toxic wastes into the sewerage system will be considered individually. Limitations as to the discharge of water containing toxic substances shall take into account the total amount of such substances which can safely be received at the sewage treatment plant or at the point of final discharge, whichever is affected. 7. Industrial wastes containing radioactive compounds will be considered individually. 8. Industrial wastes having a biochemical oxygen demand (BOD) in excess of 400 ppm. will be considered individually. If the sewerage system can safely receive said wastes, wastes having a higher BOD can be allowed. 9. Industrial wastes having a suspended solids in excess of 500 ppm. will be considered individually. If the sewerage system can safely receive said wastes, wastes having a higher suspended solids can be allowed. ARTICLE III. "Standard Methods for the examination of Water and Sewage", latest edition, approved by the Joint Committee of the Public Health Association, Federation of Sewage and Indus- trial Waste Association and American.Water Works Association will be the authoritative source for the chemical and bacter- iological analyses. PASSED AND ADOPTED this 7th day of December, 1971 ATTEST: