For pipe sizes of 24 inches or less, manholes shall be spaced
at a maximum of 400 feet and for larger pipe sizes, the maximum distances
between manholes shall be 600 feet. In addition, manholes shall be
installed at all points of changes in horizontal alignment and vertical
grade. Inlets may be substituted for manholes where practical.
Inlets of the type shown in the Township Construction Standards
shall be installed. Inlets at street intersections shall be placed
on the tangent and not on the curved portions.
Manholes and inlet castings shall conform to the Pennsylvania
Department of Transportation (PennDOT) Form 408 and PennDOT Standards
for Roadway Construction. Inlet grates shall be bicycle safe. Frames
and grates shall be cast iron or structural steel. Concrete frames
shall not be permitted.
All roof drains shall discharge to an on-lot sump or to a storm
sewer system which is controlled by a detention pond. Outlets from
roof drain sumps shall not discharge directly onto fill slopes. Outlets
shall not discharge directly to the gutter line of any street.
All pipes from roof drains shall be a minimum four-inch Schedule
40 ABS, PVC or SDR 35 pipe. Four-inch Schedule 40 PVC or ABS pipe
is required for a distance of 10 feet from the foundation of the dwelling.
No stormwater drainage system shall be permitted to discharge into
any sanitary sewer system. No pipes shall be permitted to be constructed
through any curbing on any public street.
All points of concentrated flow discharge shall outlet directly
to a well-defined drainage channel, with a defined bed and bank. Whenever
construction stops or concentrates the natural flow of storm drainage
in such a way as to affect adjoining properties, approval of the owners
shall be obtained in writing. Approval of plans by the Township shall
not authorize or sanction drainage affecting adjoining properties.
Open watercourses shall not be permitted within the rights-of-way
of streets. The stopping, filling up, confining or other interference
with, or changing the course of, drains, ditches, streams and watercourses
in the Township shall not be permitted unless approval in writing
is obtained from the Board of Commissioners. A permit must be obtained
from the Department of Environmental Protection (DEP) of the Commonwealth
of Pennsylvania for construction or changes in a watercourse subject
to the regulations of the Pennsylvania Department of Environmental
Protection.
All bridges and culverts shall be designed to support expected
loads and to carry expected flows and shall be designed to meet current
standards of the Pennsylvania Department of Transportation. All bridges
and culverts shall be subject to all permits required by the Pennsylvania
Department of Environmental Protection, Bureau of Dams and Waterways.
