Inlets, manholes, pipes, and culverts shall be constructed in
accordance with the specifications set forth in PennDOT's Publication
408, latest edition, and as detailed in the PennDOT's Publication
72M, Standards for Roadway Construction (RC), latest edition, or as
approved by the Township Engineer. All material and construction details
(inlets, manholes, pipe trenches, etc.), must be shown on the SWM
site plan, and a note added that all construction must be in accordance
with PennDOT's Publication 408 and PennDOT's Publication
72M, latest editions. A note shall be added to the plan stating that
all frames, concrete top units, and grade adjustment rings shall be
set in a bed of full mortar according to Publication 408.