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Ordinance No. 64F Municipal Sanitary Sewer System Page 7 of 10 and the Plumbing Inspector. 7. Use Of Old House Sewers. Old house sewers or portions thereof may be approved for use by the City Engineer. The City Engineer may request that the old sewer be excavated for the purpose of facilitating inspection. 8. Existing Individual Sewage Treatment System. No house sewer shall be laid across or over any existing cesspool or septic tank unless the existing cesspool or septic tank shall first be pumped clean and filled with earth to the surrounding ground level. Where a sewer connection is laid across or over an existing cesspool or septic tank, only cast iron solid pipe, confirming to ASTM Standard Specifications shall be used for that portion of the connecting sewer. 9. The contents of the existing cesspool or septic tank shall not be discharged into the City of Gem Lake municipal sewer system, but must be disposed of outside the City Limits. 10. Every connecting sewer shall be connected to the municipal sewer system at the wye designated for the property served by the connection, except where otherwise expressly authorized by the City Engineer. All connections made at point other than the designated wye shall be made only under the direct supervision of the City Engineer and in such a manner as he may direct. 11. Tunneling for a distance of not more than six (6) feet is permissible in yards, courts or driveways of any building site. When pipes are driven, the drive pipe shall be at least one size larger than the pipe to be laid. 12. Independent System Required. Drainage and plumbing system of each new building and of new work installed in an existing building shall be separate from and independent of that of any other building . Every Building shall have an independent connection with the sanitary sewer system when such is available, or as approved by the City Engineer 13. Repair Of Public Right-Of-Way. For each connection permit issued, a deposit as indicated in the City’s fee schedule as adopted from time to time, shall be paid to the City Clerk, for restoration of public right-of-way before starting of the project. This deposit will be returned upon satisfactory completion of the connection. Forfeiture of the deposit does not exonerate the permit holder from satisfactory completion of the work. 14. Costs And Expenses For Installation And Connection. eMunicipal sewer system shall be borne by the owner. The owner shall indemnify the City of Gem Lake for any loss or damage that may directly or indirectly be occasioned by the installation of the sewer connection, including the restoring of streets and street surface. Section 17. Treatment of Prohibited Wastes. Where it is determined that any waste discharged or to be discharged has certain characteristics or elements which are or may be harmful to the structures, processes, or operation of the sanitary sewer system or persons operating it, such discharge shall be discontinued or the waste shall be treated prior to its discharge into the system in a manner which will eliminate such characteristics or elements , in accordance with MN Statute, Chapter 473 and MN Rules, Chapter 7049. Section 18. Prohibited Waste Discharge. No person shall discharge, cause, or allow to be discharged into the sanitary sewer system, any waste containing concentrations in excess of the parameters established by the Metropolitan Council Environmental Services Waste Discharge Rules Article IV, Section 406.00. Section 19. Waste Trap and Separators. Oil, grease, and sand waste traps and separators shall be installed for the proper discharge of wastewater containing excessive amounts of oil, grease, sand, or flammable liquids when required by the Minnesota Plumbing Code, Minnesota Rules, Chapter 4714, the Regional Administrator of the Metropolitan Council, or when the city determines such traps or separators are necessary. Waste traps and separators shall be maintained in efficient operating conditions by the owner and at the owner's expense, through the periodic