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Ordinance No. 129 64F Municipal Water and Sanitary Sewer System Page 6 of 11 and the Changeover Permit shall be issued at the same time. This Changeover Permit is to ascertain that the existing Individual Sewage Treatment System is properly disconnected and sealed. The Changeover Permit Fee shall be as set annually by resolution of the City Council at its first meeting in January. Section 16. Surface or Ground Water. It shall be unlawful for any owner, occupant, or user of any premises to direct into or allow any storm water, surface water, ground water, well water, or water from industrial or commercial air conditioning systems to drain into the City's sanitary sewer system. roof drains, foundation drains, sump pumps, and other forms of surface drainage shall not be connected to or discharged to the sanitary sewer system. The City shall periodically perform Inflow and Infiltration (I&I) inspections to verify that connections to the City's sanitary sewer system are in compliance with the provisions of this section. Section 17. Materials to be Used. The materials and construction methods described in this section of this Ordinance shall be exclusively used in making sewer connections to the Municipal Sanitary Sewer SystemMunicipal sewer system of the City of Gem Lake: 1. DESCRIPTION CLASS SPECIFICATION JOINT Polyvinyl Chloride (PVC) Sewer Pipe SDR 35 ASTM D3034 Elastomeric Gasket Vitrified Clay Sewer Pipe Extra Strength ASTM D1785 ASTM C425 Polyvinyl Chloride (PVC) Sewer Service Pipe Schedule 40 ASTM D1785 Gasket Cast Iron Soil Service Pipe Service Weight ASTM A-74 Gasket 2. Unless otherwise stated, a sanitary sewer main of eight (8 ") inch diameter shall be expected as the minimum size and service connection pipe shall be at least four (4") inches in diameter. The service connection pipe shall be installed at grades approved by the City Engineer. 3. Joints And Connections. Joints for cast iron pipe and vitrified clay sewer pipe or for joints or connections between different types of pipe shall be in the manner and of a kind prescribed by the City Engineer. The City shall provide a list of various types and kinds of joints and connections which are approved by the City Engineer and the types and kinds of joints that are prohibited. 4. Unless otherwise authorized, all house sewers shall have a grade of not less than one -eighth (1/8") inch per foot. A grade of one-quarter (1/4") inch should be used whenever practical. The contractor shall check grades before construction proceeds and he shall install the house sewer by exposing the wye at the sewer main or the service stub and at the property line. He shall connect to the wye or service stub and shall lay the house sewer line from the wye or service stub to the building. Whenever possible the connecting sewer shall joint the building at an elevation which is below the basement floor of such building. 5. Alignment. No connecting sewer shall contain bends or a combination of bends which at any point shall be greater than forty-five (45°) degrees and no more than two (2) bends, regardless of angle, shall be permitted in any single house connection except where manholes or clean-outs are constructed at such points and in the manner as directed by the City Engineer. No connecting sewer shall be laid parallel to any bearing wall or footing unless it is placed at least three (3') feet from any such bearing wall or footing. No connecting sewer shall be laid within twenty (20') feet of any existing well unless cast iron soil pipe is used. 6. Authorized by the City Engineer. The foundation of the trench shall be formed to prevent any subsequent settlement of the pipes. If the foundation is good and firm earth, the earth shall be pared and molded to give a