(a) Trenchless technologies that may be used for installation
of new collection system pipe include impact moling, pipe ramming,
microtunneling, conventional tunneling, bore and jack, and horizontal
directional drilling.
(b) Trenchless technologies that may be used for replacement
of collection system pipe include pipe bursting, pipe splitting, and
pipe jacking.
(c) Trenchless technologies that may be used for lining
existing collection system pipes include epoxy spray lining, cured-in-place
pipe, and sliplining. These technologies reduce the inside diameter
of a pipe.
(d) All other trenchless methods of installing, replacing,
or repairing collection system pipe are non-conforming technologies
subject to the requirements of §217.7(b) of this title (relating
to Types of Plans and Specifications Approvals).
(e) A collection system using a trenchless technology
must be designed, installed, operated, maintained, and constructed
in accordance with American Society for Testing and Materials (ASTM)
or American Water Works Association (AWWA) standards with reference
to materials used and construction procedures. In the absence of ASTM
or AWWA standards, the executive director review may be based upon
other recognized standards used by industry engineers.
(f) The engineering report must include the following:
(1) the trenchless method;
(2) the type of pipe;
(3) the type(s) of soil;
(4) the pipe length and diameter;
(5) the pipe slope;
(6) the method for disconnecting and reconnecting lateral
and service connections;
(7) the provisions for flow bypass for existing system;
and
(8) the pipe standard.
(g) Collection system pipe that is installed using
a trenchless technology is subject to the testing requirements in §217.57
of this title (relating to Testing Requirements for Installation of
Gravity Collection System Pipes) and §217.68 of this title (relating
to Force Main Testing).
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