PROJ00455

• Contract/PO #: C153583
• Contractor Name: Ute Water Conservancy District
• Water District: 0
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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activities, generally within the floodplain of streams, that are substantially similar and cause minimal
environmental impacts. Nationwide permits are designed to allow the work to occur with little delay
or paperwork. An individual permit application is not required for an activity covered by a
Nationwide permit.

The Corps of Engineers has issued a Nationwide permit for the discharge of material for backfill
or bedding for utility lines, provided that there is no change in preconstruction bottom contours.
The Nationwide general permit satisfies the requirements of Section 404 of the Clean Water Act.
A series of special conditions must be followed in order for a Nationwide permit to be valid. These
special conditions and the conformance of the proposed pipeline construction with these conditions
are summarized in Table 6.1.

Based on evaluation of the spacial conditions and proposed construction approach, it appears that
a Nationwide general permit will be satisfactory for subject crossings. However, based on our
discussions with a U.S. Army Corps of Engineers representative, a Section 404 Permit will be
required if any foreign fill material is used temporarily or permanently in construction of subject
crossings. As indicated in Section 6.1, the subsurface material generated as a result of excavation
in the Colorado River will not be suitable for construction of a cofferdam system and sheet piling
will not be possible due to the presence of large boulders and cobbles. Therefore, placement of
imported fill material within the stream channel will require a Section 404 of the Clean Water Act.

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