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§ 51.17 BUILDING SEWERS.
   (A)   A separate and independent building sewer shall be provided for every building, except where one building stands at the rear of another on an interior lot and no private sewer is available or can be constructed to the rear building through an adjoining alley, court, driveway, or yard. The building sewer from the front building may be extended to the rear building and the whole considered one building sewer. The city does not and will not assume any obligation or responsibility for damage caused by or resulting from any such connection aforementioned.
   (B)   Old building sewers may be used in connection with new buildings only when they are found, on examination and test by the Wastewater System Operator, to meet all requirements of this chapter.
   (C)   The size, slopes, alignment, and materials of construction of a building sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing, and backfilling of the trench shall all conform to the requirements of the state building and plumbing codes or other applicable rules and regulations of the city. In the absence of code provisions, or in the amplification thereof, the materials and procedures set forth in appropriate specifications of the ASTM and WPCF Manual of Practice No. 9 shall apply.
   (D)   Whenever possible, the building sewer shall be brought to the building at an elevation below the basement floor. In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such building drain shall be lifted by an approved means and discharged to the building sewer.
(Ord. 89, passed 11-22-94) Penalty, see § 51.99
§ 51.18 CONNECTIONS.
   (A)   No person shall make connection of roof downspouts, foundation drains, areaway drains, or other sources of surface runoff of ground water to a building sewer or indirectly to the wastewater treatment facilities.
   (B)   The connection of the building sewer into the public sewer shall conform to the requirements of the state building and plumbing codes or other applicable rules and regulations of the city or the procedures set forth in appropriate specifications of the ASTM and the WPCS Manual of Practice No. 9. All such connections shall be made gastight and watertight to prevent the inclusion of infiltration/ inflow. Any deviation from the prescribed procedures and materials must be approved by the city prior to installation.
   (C)   The applicant for the building sewer permit shall notify the city when the building sewer is ready for inspection and connection to the public sewer. The connection and inspection shall be made under the supervision of the Wastewater System Operator.
(Ord. 89, passed 11-22-94) Penalty, see § 51.99
§ 51.19 EXCAVATIONS.
   All excavations for building sewer installation shall be adequately guarded with barricades and lights so as to protect the public from hazard. Streets, sidewalks, parkways, and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the city.
(Ord. 89, passed 11-22-94) Penalty, see § 51.99
§ 51.20 GARAGE DRAINS.
   Floor drains in private garages classified as Group U, Division 1 occupancies serving one and two family dwellings may discharge to daylight if approved by the Building Official. For the purporse of this chapter, the term "Private Garages Classified as Group U, Division 1" shall be defined by the Minnesota State Building Code as adopted in § 151.01.
(Ord.0408, passed 12-14-04) Penalty, see § 51.99
USE OF TREATMENT FACILITIES
§ 51.30 STORM WATER, NON-CONTACT COOLING WATER, AND THE LIKE.
   (A)   No person shall discharge or cause to be discharged any unpolluted water, such as storm water, ground water, roof runoff, surface drainage, or non-contact cooling water to any sanitary sewer.
   (B)   Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designed as storm sewers or to a natural outlet approved by the city and other regulatory agencies. Industrial cooling water or unpolluted process waters may be discharged to a storm sewer or natural outlet on approval of the city and upon approval and the issuance of a discharge permit by the MPCA.
(Ord. 89, passed 11-22-94) Penalty, see § 51.99
§ 51.31 DISCHARGES; PROHIBITED WASTES AND WATERS.
   No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
   (A)   Any liquids, solids, or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the wastewater treatment facilities or to the operation of the system. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, and sulfides.
   (B)   Solid or viscous substances which will cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities such as, but not limited to, ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, tissues, paunch manure, hair, hides, or paper cups, milk containers, etc., either whole or ground by garbage grinders.
   (C)   Any wastewater having a pH of less than 5.0 or greater than 9.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the wastewater treatment facilities.
   (D)   Any wastewater containing toxic pollutants in sufficient quantity, either alone or by interaction with other pollutants, to inhibit or disrupt any wastewater treatment process, constitute a hazard to humans or animals, or create a toxic effect in the receiving waters of the wastewater treatment facilities. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to Section 307(a) of the Act (33 USC 1317(a)) and M.S. § 115.01(14) as they may be amended from time to time.
(Ord. 89, passed 11-22-94) Penalty, see § 51.99
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