Manhole and manhole installation.

A. Design of all manholes shall be submitted to the Commissioner of Public Works and/or Chief Plant Operator and/or Superintendent of Sewers and shall receive approval prior to placement.B. Manholes shall be placed where there is a change in slope or alignment and at intervals not exceeding 300 linear feet, except as authorized by the Commissioner of Public Works and/or the Chief Plant Operator and/or Superintendent of Sewers.C. Whenever the grade around an existing manhole must be changed, the developer shall be responsible to raise or lower the frame and grate or manhole barrel to finish grade with the approval of the Commissioner of Public Works and/or Chief Plant Operator and/or Superintendent of Sewers.

Notice must be given to the Town prior to any work being done on any existing manhole.D. A properly sealed connection between manholes and PVC sewer mains shall be completed by one of the following methods:(1) Cast in boot coupling.(2) Mechanical tightening right type sleeve joint area shall be finished with non-shrink grout.(3) Sand impregnated PVC SDR-35 bell and coupler with gasket, fully mortared.E. 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.