I I - part - usaid

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su[,port I rom Banqk:k. Th: s Pro)cot. w . .1thus result in an
iMportiLriL tirst step toward decentralizing DLD's engineering
services in accordance with RTG policy and the real need for
field expertise. DLD accordingly plans to observe this
innovation closely for possible further replication elsewhere
in the country.
b- Technical Feasibiiity Concerns
For a project of this nature, comprising a
number of small-scale infrastructure components whose final
locations and specifications cannot reasonably be determined
until implementaiy organizations are in place, it is not
possible in the PP to provide designs for every sub-pro3ect.
This will be done on a rolling basis during Project implementation.
The PP's approach to engineering feasibility has
accordingly been (I) to determine feasible sites for inter­
ventions, (2) to determine average costs
for each construc­
tion component based on current unit costs in the areas and
utilizing standard RTG construction specifications, and (3)
develop a sound approach and organizational basis for
implementation.
The following is a brief description of what
is entailed in designing/constructing the various water
resource elements of the Project. Figure III C-I and III
C-2 give illustrative examples of each water resource
compinent.
(I) Pond Rehabilitation. In the Northeast
certain inundated areas which are not free draining, have
over a long period of time filled in with silty material or
clay which forms an impervious blanket. This blanket seals
the pond bottom so that seasonal run-off waters are held in
the pond. Too often the ponds are of insufficient depth to
serve the agricultural and other needs o loca± farmers. In
rehabilitating these ponds a study must be made to determine
how much the pond can be deepened without breaking through
the blanket and allowing the water to return to the ground
water system. Depending on the run-oft aiea, it is often
possible to put in a minor dike formed of the excavation
materials to give additional storage capacity. Generally
speaking, however, the rehabilitation work is to remove
material from the bottom of the pond to increase the depth
of the impounded water and temporarily decrease the weed
growth. Pond rehabilitation is not difficult, however the
engineering study must be caretuliV none to ensure con­
struction work will not imperil the existing resource.