FLOOD05149

• County: Delta
• Community: Delta
• Stream Name: Gunnison, Uncompahgre Rivers
• Basin: Gunnison
• Title: Cost Estimates for Removal of Debris, Bank Protection and River Training Along the Uncompahgre, Gunnison and the North Fork of the Gunnison Rivers
• Date: 1/1/1980
• Prepared For: Delta County
• Prepared By: Mt Highland Engineering
• Floodplain - Doc Type: Miscellaneous

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From the 23 October, 1984 field inspection of the Gunnison, North
Fork of the Gunnison and Uncompahgre Rivers, specific bridges were
identified in the County which exhibit the potential for severe
damage from floating debris which has been deposited upstream of
those bridges in the 1983 and 1984 floods. Particular attention
was paid to these bridges and the river reach upstream of these
bridges.

For purposes of the cost estimate, certain
about the amount of material, access and
affect the cost of removal:

assumptions were made
other factors that will

1. Debris would be removed from the channel and channelized
floodplain. The trees and other debris on the definable
bank would not be removed.

2. The debris would be collected into piles every 200 feet
and burned to reduce the bulk and increase the ease of
handling and removing the material. One person would be
dedicated to control of the burning and no fire would be
left unattended.

3. The remaining material would be removed to landfill.
This would include ashes, unburned debris and streambed
material discolored by burning. The area around the burn
would be cleaned to natural channel color and shape.

4.

The job
County
and all

would require a full time inspector, hired by
to insure that the specifications were carried
safety precautions were observed.

the
out

5.

The contractor would bid on a per acre price for
based on the calculated acreage of preflagged
areas. If, during the job, additional work was
the contractor would be required to removed the
from those areas at the price bid per acre.

removal
target
needed,
debris

6.

The contractor would have
working conditions and other
increase the bid price. The
included in the estimate at 15%.

time constraints, winter
risk factors that would
estimated increase is

From these assumptions, the actual cost per acre for removal of
debris can be estimated:

1. The density of the debris above each of the bridges will
effect the cost for removal but the effect will be much
smaller than the distance the debris can be carried or
moved to separate piles for burning. The most economic
operation would be to push or carry the material a
distance of approximately 100 feet which would clear an
area of about one (1) acre.

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