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HomeMy WebLinkAbout0935ORDINANCE NO. 935 (1982 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; Section 7505, Enforcement; and Section 7506 Abatement and Penalties, is hereby amended as follows: SECTION 7501. 7501.1 Purpose and Scope. This ordinance sets forth standards and regulations governing discharges into the Public Owned Treatment Worlds for the City of San Luis.Obispo.' These standards and regulations enable the City to comply with all applicable State and Federal haws required by the Clean Water Act of 1977 and the General Pretreatment Regulations (40 CFR, Part 403). The objectives of this ordinance are: (a) to prevent the introduction of pollutants into the POTW which will interfere with the operation of the POTW, including interference with the use or disposal of municipal sludge; (b) to prevent the introduction of pollutants into the POTW which will pass through the system inadequately treated or otherwise be incompatible with the system. 0 935 Ordinance No. 935 (c) to improve opportunities to recycle and reclaim wastewaters and sludges from the system. This ordinance provides for the regulation of direct and indirect contributors to the POTW through the issuance of permits to Industrial Users, pretreatment and reporting requirements for permittees, monitoring and enforcement of noncompliance. 7501.2 Storm Water. 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 sewer or natural outlet. Appropriate permits from all affected public agencies may be required by the City and shall be obtained by the applicant. 7501.3 Discharge quality. Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers: (a) Any liquid or vapor having a temperature higher than 150 F. into the sewer and in no case higher than 104 F at introduction into the Waste Water Treatment Plant. (b) Any water or waste containing grease as follows: 1. Floatable grease in excess of 25 parts per million. Grease in an oil, fat, grease, or other ether - soluble matter. Floatable -2- Ordinance No. 935 grease is grease which rises to the surface of quiescent sewage or waste upon dilution of the sewage or waste with fresh or salt water. 2. Dispersed grease, other than soap, in excess of 500 parts per million. Dispersed grease is grease which is not floatable. (c) Any gasoline, benzene, naptha, fuel oil, or other flammable or explosive liquid, solid or gas which the POTW has declared a hazard to the system. (d) Any garbage that has not been properly shredded. (e) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, woods, paunch manure, or any other solid or fiscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the WWTP. (f) Any water or wastes having pH lower than 6.0 or higher than 9.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the WWTP. (g) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create a hazard in the receiving waters of the WWTP, or to exceed the limitations set forth in the categorical pretreatment standards. (h) 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 WWTP. (i) Any noxious or malodorous gas or substance which either alone or -3- Ordinance No. 935 by interaction with other wastes are capable of creating a public nuisance. (j) Any wastewater containing in excess of: 15.0 mg /l aluminum 1.0 mg /l arsenic 0.25 mg /1 cadmium 0.5 mg /l chromium 0.5 mg /l copper 7.5 mg /l flouride 30.0 mg /l iron 0.5 mg /1 lead 0.01 mg /l 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 /l ammonia 300.0 mg /l sulfate 7.5 mg /l 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 (k) 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 (such as brine reclamation and use of minimum effective quantities of salt for regenerating portable exchange units) to minimize the discharge of these substances. A maximum of 12 lbs. net of sodium chloride per cubic foot of portable exchange water softener units regenerated shall not be exceeded. Such plants shall maintain 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. (Ordinance No. 721 1977) -4- Ordinance No. 935 (1) The admission into the public sewers of any water or wastes having (1) a 5 -day Biochemical Oxygen Demand greater than 300 parts per million by weight, or (2) containing more than 350 parts per million by weight of suspended solids, or (3) containing any quantity of substances having the characteristics described in Section 7501.2, or (4) having an average daily flow greater than 2 percent of the average daily sewage flow shall be subject to the review and approval of the Director of Public Services. (m) Any waters or wastes with an objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions. (n) Any waters or wastes containing any radioactive wastes or isotopes of halflife or concentrations that exceed limits established by the supervisor of the WWTP. (o) Any substance which will cause the WWTP effluent and by- products, such as sludge, to be unsuitable for reclamation and reuse. In no case shall a substance discharged to the WWTP cause the plant to be in violation of sludge use or disposal guidelines and regulations. (p) Any substance which will cause the POTW to violate its NPDES permit. When the supervisor determines that a use is contributing any of the above mentioned substances in such amounts as to interfere with the operation of the WWTP, the supervisor shall: (1) advise the user of the impact of the contribution on the WWTP, (2) develop effluent limitations for the user to correct. -5- Ordinance No. 935 7501.4 Federal Categorical Pretreatment Standards. Upon the promulgation of the federal categorical pretreatment standards for a particular industrial subcategory, the federal standard shall supersede this ordinance where its limitations are more stringent.. 7501.5 Effluent limitations promulgated by the Federal Water Pollution Control Act. Effluent limitations promulgated by the Federal Water 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 pre- vent 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 incompatible pollutants to public owned treatment works, are required to adopt best practical control technology currently available, as defined by the Administrator pursuant to Section 304(b) of the Act. For some 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. However, any adjustments required for particular industrial categories should be considered in connection with the City's requirements rather than in the national pretreatment standard. Limitations on wastewater strength in this Chapter may be supplemental with more stringent limitations if: -6- Ordinance No. 935 1. the City determines that the limitations in Section 7501.3 may not be sufficient to protect the operation of the City's treatment works, or 2. the City determines that the limitations in Section 7501.3 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 Elimination System (NPDES) permit. 7501.6 Grease, oil and sand interceptors. 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 for private living quarters or dwelling units. All interceptors shall be of a type 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 substantial construction, watertight, and equipped with easily removable covers which, when bolted in place, shall be gas -tight and water - tight. Where installed all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficent operation at all times. -7- .a Ordinance No. 935 7501.7 Pretreatment Facilities Where pretreatment of discharge is required by the supervisor of the WWTP, the necessary facilities shall be provided, operated, and maintained at the user's expense. Detailed plans showing the facilities and their operating procedures shall be submitted to the City for review. Such plans must be acceptable to the City before construction is begun. Any changes in the pretreatment facilities or method of operation must be reported to and approved of by the City prior to implementation of the proposed changes. 7501.8 Control Manhole 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 measurement 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. 7501.9 Measurements and tests. All measurements and tests and analyses of the characteristics of waters and wastes shall be determined in accordance with "Standard Methods for the Examination of Water and Sewage," and shall be determined at the control manhole or upon suitable samples taken at said control manhole. In the event that no special manhole has been required, the control manhole shall be -8- r . Ordinance No. 935 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. 7501.10 Special agreement. 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 whereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment therefore by the industrial concern of all City costs connected with such extra treatment. 7501.11 Drainage below curb and also below main sewer level: (a) 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 curb 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. (b) Director of Public Services empowered to stop overflow. If the property owner fails to install and maintain a backwater -9- Ordinance No. 935 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 may 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. (c) 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 trap or backwater valve in good working condition when requested under this part, the Director of Public Services may order and require termination 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. (d) Maintenance of House Connection Sewers. All house connection sewers, industrial sewers, private sewage disposal systems and appurtenances thereto, now existing or hereafter constructed, shall be maintained by the owner of the property -10- Ordinance No. 935 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. 7501.12 Powers and authority of Inspectors. (a) 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. The 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. (b) Liability for Injury. While performing the necessary work on private properties referred to in "J" above, authorized employees, and the City shall indemnify the company against loss or damage to its property by such employees and against liability claims and demands for personal injury or property damage asserted against the company and growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the company to maintain safe conditions as required in this ordinance. -11- Ordinance No. 935 (c) 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 identification 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. 7501.13 Permits and Users Survey. 1. Permit Conditions: Wastewater discharge permits shall be expressly subject to all provisions of this Ordinance and all other regulations, user charges and fees established by the City. The conditions of wastewater discharge permits shall be uniformly enforced by the Director of Public Services in accordance with this Ordinance, and applicable State and Federal regulations. Permits may contain the following: a) the unit charge or schedule of user charges and fees for the wastewater to be discharged to a community sewer; b) the average and maximum wastewater constituents and characteristics; c) limits on rate and time of discharge or requirements for flow regulations and equalization; -12- Ordinance No. 935 d) requirements for installation of inspection and sampling facilities; e) pretreatment requirements; f) specifications for monitoring programs which may include sampling locations, frequency and method of sampling, number, types and standards for tests and reporting schedule; g) requirements for submission of technical reports or discharge reports; h) requirements for maintaining plant records relating to wastewater discharge as specified by the City, and affording Department of Public Services access thereto; i) mean and maximum mass emission rates, or other appropriate limits when incompatible pollutants (as defined by City Ordinance) are proposed or present in the user's wastewater discharge; j) completion of the Industrial User's Survey; k) other conditions as deemed appropriate by the City to insure compliance with this ordinance. 2. Duration of Permits: Permits shall be issued for a specified time period, not to exceed five (5) years. A permit may be issued for a period less than a year or may be stated to expire on a specific date. If the user is not notified by the City 30 days prior to the expiration of the permit, the permit shall be extended one additional year. The terms and conditions of the permit may be subject to.modification and change by the City during the life of the permit as limitations or requirements as identified in -13- 14 Ordinance No. 935 Municipal Code Section 7500 -7507 are modified and changed. The user shall be informed of any proposed changes in his permit at least 30 days prior to the effective date of change. Any changes or new conditions in the permit shall include a reasonable time schedule for compliance. 3. Transfer of a Permit: Wastewater Discharge Permits are issued to a specific user for a specific operation. A Wastewater Discharge Permit shall not be reassigned or transferred or sold to a new owner, new user, different premises, or a new or changed operation. Provided that if in the opinion of the Director of Public Services the sale or transfer of an operation does not result in a change in use, the permit may be reassigned. 4. Revocation of Permit: Any user who violates any of the following conditions of the permit, of this Ordinance, or of applicable State and Federal regulations, is subject to permit revocation: a) failure to factually report the wastewater constituents and characteristics of discharge; b) failure to report significant changes in operations or wastewater constituents and characteristics; c) refusal of reasonable access to the user's premises for the purpose of inspection or monitoring; d) failure to provide official evidence of proper disposal of non - domestic wastes not permitted by City Ordinances (hazardous and toxic wastes). -14- Ordinance No. 935 7501.14 Reporting Requirements for Permittees. (a) Any user subject to pretreatment standards and requirements shall submit a report indicating the nature, concentration, and daily flows of all limiting pollutants to the supervisor of the WWTP. The report shall also state whether the applicable pretreatment standards and requirements are being consistently met and, if not, set forth a schedule of compliance for the installation of technology or changes in character of the discharge. (b) After meeting the above requirements, the user shall submit self monitoring reports, as required by the supervisor of the WWTP, to assess and assure continued compliance with pretreatment standards and requirements, including but not limited to the reports required in 40 CFR 403.12. These reports shall contain the results of sampling and analysis of the discharge, done in accordance with the procedures approved by the POTW. 7501.15 Confidentiality /Public Disclosure. (a) Any information submitted to EPA may be claimed as confidential by the submitter. Any such claim must be asserted at the time of submission in the proper manner. If no claim is made at the time of submission, EPA may make the information available to the public without further notice. (b) Effluent data shall be available to the public without restriction. (1) notification of continuing violations will be published at least once every 12 months in the major local newspaper. -15- '� pFi S �- W., 7T F� unl, eo C/(-f." )4 /6. Ordinance No. 935 INTRODUCED AND PASSED TO PRINT by the Council of the City_of.San Luis Obispo at a meeting held on the 31st _ day of August 1982 on motion of Councilman Settle on the following roll call vote: seconded by Councilman Dunin , and AYES: Councilmembers Settle, Dunin, Dovey, Griffin and Mayor Billig NOES: None ABSENT: None ATTEST: CITY ERK PAMELA VO S APPROVED: 'O'j, 0- -fol �pn City Administrativ6 Off cer Cit Attorney Public Services Director -16- ORDINANCE NO. 935 (1982 . Series) FINALLY PASSED this 21st day of September , 1982, on motion of Councilman Settle seconded by Councilwoman Dovev , and on the following roll call vote: AYES: Councilmembers Settle, Dovey, Dunin, Griffin and Mayor Billig NOES: None ABSENT: None S / II I J .. A MayoA Melanie C. Billig ATTEST: Ci y Clerk Pamel ges