unless written authorization is obtained from the Owner for surface
excavations to remove blockages.
5. Hours of operation, sequencing of work description, number of
shifts, number of crews, and expected time to complete the work
for the rehabilitation method proposed shall be described.
6. The Contractor shall describe any surface activities that will be
required, and any mitigation measures that will be used to reduce
surface impacts as part of the rehabilitation method proposed.
7. The Contractor shall describe the method(s) proposed for annular
space grouting, including grouting subcontractor qualifications.
The location and number of access shafts shall be submitted for review
and approval by the Owner. This submittal shall include any appropriate
sketches deemed necessary by the Owner. The Contractor shall be
responsible for obtaining all necessary permits as they relate to the
location, should they be accepted by the Owner. The pits or shafts shall be
spaced in conformance with the pipe manufacturer’s recommended
maximum allowable insertion force that can be exerted onto the liner pipe.
1. The size of the access shaft shall be as small as possible, but
sufficient to allow access for the Contractor's work. The
Contractor shall be responsible for support of excavation and
dewatering of each shaft. The shaft(s) shall be removed and
backfilled as soon as practical upon completion of the liner pipe,
and the surface restored in accordance with the applicable
provisions of these Specifications.
2. The Contractor shall minimize the time that a shaft remains open at
a particular site. Considerations shall be provided to complete and
coordinate all work, including cleaning, pre-installation internal
inspection, pipe and manhole/catchbasin rehabilitation (as needed),
post-installation internal inspection, and acceptance, so as to
minimize surface disturbances.
The Contractor shall submit the particular method by which he plans to
maintain traffic, signing schedule, access roads, and locations of access
locations and receiving manhole to the Owner for review and approval prior
to commencement of construction.
Omitted.
02769-4
