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HomeMy WebLinkAbout0721ORDINANCE NO. 721 (1977 Series) AN ORDINANCE OF THE CITY OF SAN LUIS OBISPO AMENDING MUNICIPAL CODE ARTICLE VII, CHAPTER 5, SECTION 7501, STANDARDS AND REGULATIONS FOR QUALITY OF SEWER DISCHARGE. BE IT ORDAINED by the Council of the City of San Luis Obispo as follows: SECTION 1. Municipal Code Article VII, Chapter 5, Section 7501, Standards and Regulations for Quality of Sewer Discharge, is hereby amended to read as follows: < <SEMON 7501. Standards and Regulations for Quality of Sewer Discharge. No person shall discharge or cause to be discharged any storm water, surface water, ground water, roof runoff, subsurface drainage, cooling water, swimming pool water, swimming pool backwash water, or unpolluted industrial process waters to any sanitary sewer. A. Storm water and all unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to a natural outlet approved by the Director of Public Services. Industrial cooling water or unpolluted process waters may be discharged, upon approval of the Director of Public Services, to a storm seer or natural outlet. Appropriate permits from all affected public agencies may be required by the City and shall be obtained by the applicant. B. Discharge quality. Except as hereinafter provided, no person shall dis- charge or cause to be discharged any of the following described waters or wastes to any public- sewers. - - DFR:ktm 8/22/77 0 721 1. Any liquid or vapor having a temperature higher than 150° F. 2. Any water or waste containing grease, as follows: a. Floatable grease in excess of 25 parts per million. Grease is an oil, fat, grease, or other ether - soluble matter. Floatable grease is grease which rises to the surface of quiescent sewage or waste or upon dilution of the sewage or waste with fresh or salt water. b. Dispersed grease, other than soap, in excess of 500 parts per million. Dispersed grease is grease which is not floatable. 3. Any gasoline, benzene, naptha, fuel oil, or other flammable or explosive liquid, solid or gas. 4. Any garbage that has not been properly shredded. 5. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, woods, paunch manure, or any other solid or fiseous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works. 6. Any water or wastes having .a pH lower than 6.0 or higher than 9.0, or having any other corrosive property capable of causing damage or hazard to struc- tures, equipment, and personnel of the sewage works. 7. Any waters or wastes containing a toxic or poisonous substance in suf- ficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in the receiving waters of the sewage treatment plant. 8. Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle . such materials at the sewage treatment plant 9. Any noxious or malodorous gas or substance capable of creating a public nuisance. Revised 1/77 VIR/777 161 -A 10. Any wastewater containing in excess of: 15.0 mg /1 aluminum 1.0 mg /l arsenic 0.25 mg /l cadmium 0.5 mg /l chromium 0.5 mg /1 copper 7.5 mg /l fluoride 30.0 mg /l iron 0.5 mg /l lead 0.01= mg /1 mercury 0.1 mg /l selenium 3.0 mg /l zinc 2.0 mg /1 M.B.A.S. (foaming agent) 1.0 mg /l phenol 30.0 mg /1 ammonia 300.0 mg /l sulfate 7.5 mg /1 boron Any wastewater, other than water- softening regeneration brine, containing in excess of: 1600 mg /l total dissolved-solids 300 mg /l sodium 300 mg /l chloride 11. Plants discharging water - softening brine shall not be restricted in the concentrations of total dissolved solids, sodium, or chloride of the wastewater discharged. However, such plants shall make all reasonable efforts to minimize the discharge of these substances. Reasonable efforts include brine reclamation and use of minimum effective quantities of salt for regenerating portable exchange units. A maximum of 12 lbs. net of sodium chloride per cubic foot of portable exchange water soft- ener units regenerated shall not be exceeded. Such plants shall main- tain records of monthly sodium chloride usage and monthly volume of portable exchange units regenerated and shall make these records available to the City for review upon request. 12. The admission into the public sewers of any waters or wastes having (a) a 5 -day Biochemical Oxygen Demand greater than 300 parts per million'by weight, or (b) containing more than 350 parts per million by weight of suspended solids, or (c) containing any quantity of substances having the characteristics described in "B" of this Section, or (d) having an average daily flow greater than 2 percent of the average daily sewage flow of the City of San Luis Obispo, shall be subject to the review and approval of the Director of Public Services. Where necessary in the opinion of the Director of Public Services, the owner shall provide, at his expense, such preliminary treatment as may be necessary to (a) reduce the Biochemical Oxygen Demand to 300 parts per million and the suspended solids to 350 parts per million by weight, or (b) reduce objectionable characteristics or constituents to within the maximum limits provided for in "B" of this Section, or (c) control the quantities and rates of discharge of such waters or wastes. Any facilities required to pre- treat to a level acceptable to the City shall be provided and maintained at the user's expense. Detailed plan s showing the pretreatment facilities and operating procedures shall be submitted to the City for review, and shall be acceptable to the City before construction of the facility. The review of such plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility as Revised 1/77 161 -C necessary to provide the protection necessary to rieet the requirements of this W*.. - C. Effluent limitations promulgated by the Federal [^later Pollution Control Act, PL 92 -500, shall apply in any instance where they are more stringent than those in this Section. Under Section 307(b) of the Act, Federal pretreatment standards are designed to achieve two purposes: (1) to protect the operation of publicly owned treatment works, and (2) to prevent the discharge of pollutants which pass through such works inadequately treated. Users in industrial categories subject to effluent guidelines issued under Section 304(b) of the Act, which are discharging inccmpatible pollutants to public owned treatment works, are required to adopt best practicable control technology currently available, as defined by the Administrator pursuant to Section 304(b) of the Act. For scene industrial categories it may be necessary to define pretreatment guidelines for problems that may arise as a result of the discharge into publicly owned treatment works. How- ever, any adjustments required for particular industrial categories should be con- sidered in connection with the City's requirements rather than in the national pretreatment standard. Limitations on wastewater strength in this Chapter may be supplemented with more stringent limitations if: 1. The City.determines that the limitations in Section 7501 -B may not be sufficient to protect the operation of the City's treatment works, or 2. The City determines that the limitations in Section 7501 -B may not be sufficient to enable the City's treatment works to comply with water quality standards or effluent limitations specified in the City's National Pollutant Discharge Elimi- nation System (NPDES) permit. D. Grease, oil and sand interceptors shall be provided when, in the opinion of the Director of Public Services, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, and other harmful ingredients; except that such interceptors shall not be required Revised 1/77 161 -D for private living quarters or dwelling units. 1111 interceptors shell be ot: a tyjx� and capacity approved by the Director of Public Services, and shall be located as to be readily and easily accessible for cleaning and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of sub- stantial construction, watertight, and equipped with easily removable covers which, when bolted in place, shall be gas -tight and watertight. Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously effici,:ilt operation at all times. E. Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective opera- tion, by the owner at his expense. F. When required by the Director of Public'Services, the owner of any property served by a building sewer carrying industrial wastes shall install a suitable control manhole in the building sewer to facilitate observation, sampling and measurements of the wastes. Such manhole, when required, shall be accessible and safely located, and shall be constructed in accordance with plans approved by the Director of Public Services. 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. G. All measurements and tests and analyses of the characteristics of waters and wastes to which reference is made in "B" and "C" shall be determined in accordance with "Standard Methods for the Examination of Water and Sewage," and shall be determined at the control manhole provided for in "F ", or upon suitable samples taken at said control manhole. In the event that no special manhole has been re- quired, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. The cost of any program of regular testing required by the Director of Public Services shall be billed directly to the industry or business involved. Revised 1/77 161 -E a H. No statement contained in this article shall be construed as preventing any special agreement or arrangement between the City of San Luis Obispo and any industrial concern vhereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment therefor by the industrial concern of all City costs connected with such extra treatment. I. Drainage below curb and also below main sewer level: 1. Drainage piping serving fixtures, the flood level rims of which, are located below the elevation of the curb or property line, at the point where the building sewer crosses under the cum or property line, and above the crown level of the main sewer, shall drain by gravity into the main sewer, and shall be protected from back flow of sewage by installing an approved type backwater valve, and each such backwater valve shall be installed only in that branch or section of the drainage system which receives the discharge from fixtures located below the elevation of the curb or property line. If the drainage piping is lower than the next upstream manhole, the property owner may be required to install a backwater valve. 2. Director of Public Services empowered to stop overflow. If the property owner fails to install and maintain a backwater trap or backwater valve in good working condition, when required under this Section, the Director of Public Services may order and require said plumbing fixture to be disconnected and removed and the outlet plugged or capped. In the event that the property owner fails to disconnect and plug or cap the sewer connection within ten (10) days after written notice by the Director of Public Services, then the Director of Public Services shall arrange for such disconnection and capping; the cost of which shall be a debt of the property owner and which my be collected by court action or may be declared to be a lien by action of the City Council after public hearing and notice to the property owner and shall be added to and collected as part of the tax roll. 3. Alternate right to terminate water service. As an alternate to the procedure set forth above, if the property owner fails to install and maintain a backwater Revised 1tk /77 161 -F . 'trap or backwater vale, n good working condition when - _juested cuhc�k r this part, the Director of Public Services may order and require to iiii.nation of water service to the parcel and all structures connected to the sewer outlet subject'to overflow. Said water service shall not be reinstated until the maintenance or installation of the backwater trap or backwater valve has been approved by the Director of Public Services. 4. Maintenance of House Connection Sewers. All house connection sewers, industrial sewers, private sewage disposal systeras and appurtenances thereto, now existing or hereafter constructed, shall be maintained by the owner of the property in a safe and sanitary condition and all devices or safeguards which are required by the section for the operation thereof, shall be maintained in a good working order. J. Powers and authority of Inspectors. 1. Inspection of Premises. The Director of Public Services, the Health Officer, and other duly authorized employees of the City and the Health Department bearing proper credentials and identification shall be permitted to enter all properties for the purposes of inspection, observation, measurement, sampling, and testing in accordance with the provisions of this ordinance. Me Director of Public Services, the Health Officer, or their representatives shall have no authority to inquire into any processes including metallurgical, chemical, oil, refining, ceramic, paper, or other industries beyond that point having a direct bearing on the kind and source of discharge to the sewers or waterways or facilities for waste treatment. 2. Liability for Injury. Mile performing the necessary work on private properties referred to in "J" above, authorized employees of the City or Health Department shall observe all safety rules applicable to the premises established by the company, and the company shall be held harmless for injury or death to such employees, and the City shall indemnify the company against loss or damage to its property by such employees and against liability claims and demands Revised 1/77 161 -G for personal injury or property damage asserted against the conViany and growing out of the gauging cued s milling operation, except as such may be caused by negligence or failure of the'company to maintain safe conditions as required in this ordinance. 3. Rights of City Entry. The Director of Public Services, the Health Officer, and other duly authorized employees of the City or Health Department bearing proper credentials and indentification shall be permitted to enter all private properties through which the City holds a duly negotiated easement for the purposes of, but not limited to, inspection, observation, measurement, sampling, repair, and maintenance of any portion of the sewage works lying within said easement. All entry and subsequent work, if any, on said easement shall be done in full accordance with the terms of the duly negotiated easement pertaining to the private property involved. SECTION 2. This ordinance, together with the ayes and noes, shall be published once in full, at least three days prior to its final passage, in the Telegram- Tribune, a newspaper published and circulated in said city, and the same shall go into effect at the expiration of 30 days after its said f inal.passage. INTRODUCED AND PASSED TO PRINT by the Council of the City of San Luis Obispo at a meeting thereof held on the 6th day of September 1977, on motion of Councilman Petterson , seconded by Mayor Schwartz and on the following roll call vote: . ORDINANCE NO. 721 AYES: NOES: ABSENT: ATTEST: Councilmen Petterson, Dunin, Jorgensen and Mayor Schwartz None Councilman Gurnee C' lerk .H. Fitzpatrick Approved as to form: WENDT, MITCHELL, SINSHEIMER, de la MOTTE & L LEY City Attorney ILIt By Allen Grimes Approved as to content: City Administrative Officer Director of Public Services ORDINANCE NO. 721 FINALLY PASSED this 20th day of September 19 77 , on motion of Councilman Dunin seconded by Councilman Petterson on the following roll call vote: AYES: Councilmen Dunin, Petterson, Jorgensen, Gurnee and Mayor Schwartz NOES: None ABSENT: None ATTEST: Fitzpatrick, CITY CLERK