Stream crossing activities, including skidding trails
and bridge and culvert placement, improvement, or replacement and
fill placed in wetlands and water bodies in conjunction with the improvement
or replacement of bridge and culvert crossings for municipal, township,
county, state, tribal, or federal projects. The replacement of historic
bridges must be coordinated with the Tribal Department of Historic
Preservation. In addition, the existing structure must be removed
and the replacement must be constructed on the same or similar alignment
with hydraulic capacity that is consistent with the tribal and federal
regulations and requirements. The placement of fill material into
wetlands is authorized for widening of the road approaches to conform
to the width or alignment of the new structure. All excess material
must be placed at an upland location. If the project involves changing
the channel of a river, creek, or stream, then additional requirements
may be applied. These activities also include the installation and
removal of submerged utility line crossings; additionally the following
special conditions must be met:
(a)
Utility lines placed across the channel of an
authorized federal navigation project must be embedded at least six
feet below the authorized channel depth, or to a lesser depth if approved
by the Corps of Engineers.
(b)
Dredged or fill material may be placed as backfill
or bedding, regulated by the Tribe, so long as there is no change
in preconstruction bottom contours. Excess fill must be removed to
an upland disposal area.
(c)
The utility line must not be placed within 500
feet of a levee or flood wall constructed and/or maintained with federal
funds.
(d)
Utility crossings involving pipelines must comply
with Federal Department of Transportation regulations for installation
of pipelines.
(e)
All utility lines transporting oil, gas, or
other pollutive substances must be equipped with shutoff valves at
the upland edge of the water crossing to prevent unnecessary pollution
of waters in the event of pipeline failure.