Sewer pipe.

All sewer materials shall be new, free of damage, and in conformance with these specifications. Pipe that shows signs of damage or ultraviolet (UV) deterioration will be rejected.A. Sanitary sewer main. Pipe shall be:(1) Polyvinyl chloride (PVC) pipe meeting requirements of ASTM D-3034, minimum wall thickness SDR 35 and with flexible elastomeric gasket joint per ASTM D-3212.B. Force mains. Force mains shall be PVC SDR-18 or P.E.P. SDR-17, Class 52.C. Lateral connections. Connections shall be as follows:(1) For PVC SDR-35 main, install PVC four inches, SDR-35 wye. Then install four inches SDR-35 1/8 bend and an approved four inches SDR-35 to four inches SDR-21 adaptor.(2) For existing sewer main-install Genco DF-40 cast-iron saddle with alignment flange.

A five-inch hole shall be cored into the existing main and saddle strapped over with the proper size stainless steel straps. Then use four inches SDR-21 lateral pipe.(3) No lateral pipes shall extend into the flow area for the main sewer.(4) All lateral connections shall be cradled in crushed stone.D. Laterals.(1) Lateral pipe installed within the public right-of-way limits shall be either polyvinyl chloride (PVC) pipe SDR-21 pipe or Schedule 40 meeting ASTM D 2241.(2) Joints shall be "slip sealed" type with rubber ring for SDR-21, and Schedule 40 shall be glued joints.(3) Prior to the installation of a lateral connection to a residence, an entry fee shall be paid to the Town of Webster Sewer Department and the required permit shall be issued.(4) All commercial or industrial laterals shall be no less than six inches in diameter.E.

Low-pressure sanitary sewers.(1) Building service connections from individual grinder pumps to the sewer main should be of 1 1/4 inch PVC pipe and should include a full ported valve (such as a corporation stop or U-valve) located in the service line to isolate the pump from the main. Check valves specifically suited to wastewater service should be provided at or near the pump and at a convenient location in the pressure service line before it enters the main.(2) Low-pressure sanitary sewer systems are the responsibility of the homeowner not the Town of Webster. A maintenance contract should be obtained from the pump supplier.F.

Special appurtenances. When conditions arise that require a special design, material and/or construction method not specified within these regulations, the applicant shall submit all pertinent information to the Commissioner of Public Works and/or the Chief Plant Operator and/or Superintendent of Sewers for review and approval.