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§ 51.071 PERMIT REQUIRED FOR BUILDING SEWER LATERAL.
   Before commencement of construction of a building sewer lateral, the owner shall first obtain a written permit from the city. The applicant for this permit shall supplement such application form by any plans, specifications and other information deemed necessary by the city. A permit and inspection fee of $20 shall be paid to the City Clerk at the time the application is filed for construction of a building sewer lateral.
(1981 Code, § 51.071) (Ord. 6405-90, passed 9-10-1990) Penalty, see § 51.999
§ 51.072 TAMPERING WITH OR DAMAGING WORKS PROHIBITED.
   No unauthorized person shall maliciously, willfully or negligently break, damage, destroy, uncover, deface or tamper with any structure, appurtenance or equipment which is a part of the wastewater treatment works. Any person violating this provision shall be subject to immediate arrest under charge of disorderly conduct.
(1981 Code, § 51.072) (Ord. 6405-90, passed 9-10-1990) Penalty, see § 51.999
§ 51.073 NOTICE TO CORRECT OR CEASE VIOLATION.
   Any person found to be violating any provision of this chapter, except as noted in § 51.072, shall be served by the city with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, within a period of time stated in such notice, permanently cease all violations.
(1981 Code, § 51.073) (Ord. 6405-90, passed 9-10-1990) Penalty, see § 51.999
§ 51.074 POWERS AND AUTHORITY OF INSPECTORS.
   (A)   Employees of the city duly authorized by the Safety-Service Director and bearing proper credentials and identification shall be permitted to enter all properties for the purposes of inspection, observation, measurement, sampling and testing pertinent to discharge to the wastewater treatment works in accordance with the provisions of this chapter. The authorized employees of the city are able to obtain information concerning industrial or commercial processes which have a direct bearing on the kind and source of discharge to the wastewater treatment works. A user may withhold information considered confidential. A user must establish that the revelation to the public of the information in question might result in an advantage to competitors.
   (B)   While performing the necessary work on private properties, the authorized employees of the city shall observe all safety rules applicable to the premises established by the owner, and the owner shall be held harmless for injury or death to the city employees, and the city shall indemnify the owner against loss or damage to its property by city employees and against liability claims and demands for personal injury or property damage asserted against the owner and growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the owner to maintain safe conditions.
(1981 Code, § 51.074) (Ord. 6405-90, passed 9-10-1990)
§ 51.075 SAFETY-SERVICE DIRECTOR OF CITY TO MAKE RULES; APPEALS.
   The Safety-Service Director shall make and enforce rules and regulations, establishing the types and characteristics of sanitary sewage and industrial wastes, and other matters not specifically covered in this chapter which shall be discharged into the city sewerage system, and the types and characteristics of sanitary sewage and industrial wastes admissible to the city sewerage system only after pretreatment. The rules and regulations shall be subject to appeal to the City Council, which shall affirm or reject the ruling of the Safety-Service Director.
(1981 Code, § 51.075) (Ord. 6405-90, passed 9-10-1990)
§ 51.076 INSPECTION OF NEW LATERALS.
   The building sewer lateral and its connection into the main sanitary sewer shall be left exposed for inspection and approval of the city or its duly authorized agent. Upon approval, the city will authorize the placing of backfill over the connection and pipe at which time the building sewer lateral may be used for its intended purpose.
(1981 Code, § 51.076) (Ord. 6405-90, passed 9-10-1990)
§ 51.077 NOTIFICATION REQUIRED.
   Prior to commencing any construction of public or building sewers, a minimum of 24-hours (excluding Saturday, Sunday and holidays) notice shall be given to the office of the city. No construction of sewers shall be allowed on legal holidays, Saturdays, Sundays or after 4:30 p.m. unless written permission is obtained from the city. The city may require the payment by the contractor for inspection costs for work performed on days and at times listed in the written permission.
(1981 Code, § 51.077) (Ord. 6405-90, passed 9-10-1990)
CONTROL OF WASTEWATER DISCHARGES
§ 51.085 NORMAL CONCENTRATION OF WASTES.
   (A)   User charges, except extra strength surcharge. Pursuant to §§ 51.095 through 51.105 sanitary sewer charges shall apply to wastes not exceeding normal concentrations as follows:
      (1)   BOD - 200 milligrams per liter;
      (2)   Suspended solids - 240 milligrams per liter; and
      (3)   Phosphorous - 10 milligrams per liter.
   (B)   Applicable concentrations shall be based on average concentrations, weighted in proportion to volume of flow, determined during each billing period by the most practicable method possible. Should the average concentration of any constituent exceed the normal concentration provided in this section, a user charge - extra strength surcharge may be collected by the city as subsequently outlined in §§ 51.095 through 51.105. The calculation of these high strength charges shall be by the city after consultation with the user. The concentration sampling and testing shall be performed by the city.
(1981 Code, § 51.085) (Ord. 6405-90, passed 9-10-1990)
§ 51.086 AUTHORITY FOR CONTROL OF WASTEWATER DISCHARGES.
   (A)   If any wastes are discharged, or are proposed to be discharged, to the wastewater treatment works which contain pollutants in excess of normal concentrations as defined in § 51.085 and/or possess characteristics which, in the judgment of the city, may have a deleterious effect upon the wastewater treatment works or receiving waters, including violation of applicable NPDES permit, or which otherwise create a hazard to life or constitute a public nuisance, the city shall:
      (1)   Reject the wastes;
      (2)   Require pretreatment to an acceptable condition for discharge to the wastewater treatment works;
      (3)   Require control over the quantities and rates of discharge;
      (4)   Require payment of surcharges as provided previously to cover the added cost of handling and treating the wastes.
   (B)   Roof drains, foundation drains and all other clear water connections to the sanitary sewer are prohibited.
(1981 Code, § 51.086) (Ord. 6405-90, passed 9-10-1990)
§ 51.087 INDUSTRIAL WASTES.
   All industrial wastes discharged to the public sewers by major contributing industries shall, as a minimum, meet the national pretreatment standards or best practical control technology currently available for incompatible pollutants as published in Title 40, Code of Federal Regulations Part 403 unless the city is committed, through its NPDES permit, to remove a specified percentage of the incompatible pollutant. In those instances the applicable pretreatment standards may be correspondingly reduced to levels determined by the city or its duly authorized representative or state regulatory agencies.
(1981 Code, § 51.087) (Ord. 6405-90, passed 9-10-1990)
§ 51.088 REQUIREMENTS FOR DISCHARGE OF OIL AND GREASE.
   (A)   If oils and grease are biodegradable and in a physical state that does not cause clogging or undue maintenance problems in the wastewater facilities, the discharge of these substances can be accepted in a wastewater treatment system. Animal and vegetable oils and grease (polar substances) are readily degradable in aerobic and anaerobic biological treatment systems provided that the physical states of the oils and grease do not prevent the necessary contact with the biological suspensions responsible for treatment. However, oils and grease of mineral origin (primarily nonpolar substances) are essentially non-biodegradable either in aerobic or anaerobic processes and should be removed from industrial wastes to the maximum degree practical before discharge. The discharge of these oils and grease of mineral origin shall be limited to the regulation of the city. Grease separators are required for all meat packing plants and on building sewers serving hotels, restaurants, and institutions in which large numbers of meals are served.
   (B)   The use of garbage grinders precludes the use of gravity grease separators. Flammable waste and grit intercepting facilities must be provided on all building sewers from garages, filling stations, cleaning establishments and other concerns using volatile oils or solvents. Special pretreatment methods are required for the removal of soluble cutting oils. All grease and oil removal facilities must be approved by the city.
(1981 Code, § 51.088) (Ord. 6405-90, passed 9-10-1990) Penalty, see § 51.999
§ 51.089 DISCHARGE OF WASTES TO STORM SEWERS.
   Wastes shall not be discharged into a storm sewer unless the waste is of such character as would permit the waste to be discharged directly to the body of water to which the storm sewer discharges and be in compliance with all criteria and standards of discharge established by regulatory agencies.
(1981 Code, § 51.089) (Ord. 6405-90, passed 9-10-1990) Penalty, see § 51.999
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