WSP01089

• File Number: 8276.500
• Description: Glenwood-Dotsero Springs Unit - Salinity Control Projects
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 3/24/1982
• Title: URS Final Report - Phase I - Saliity Investigation of Glenwood-Dotsero Springs Unit
• Water Supply Pro - Doc Type: Report/Study

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Each alternative was analyzed as a whole and as an appropriate mix of
generic components. The generic components included surface and/or
subsurface collection options, transmission pipelines to the various
treatment/disposal sites, treatment options such as reverse osmosis,
distillation, spray evaporation, and solar evaporation, and ultimate
disposal which included deep well injection or evaporation of
concentrated brine and/or landfilling of the solid salt. Detailed
engineering and environmental analyses were performed on these
individual components, keeping in mind the ultimate alternative
combinations. This approach allowed great flexibility in the ongoing
attempts to find optimal mixes of components.

The formulation of alternatives as a system mix of
also allowed great flexibility in preparing revised
BOR and the contractor prepared a total of
alternatives through the. public involvement process
internal reviews.

generic components
alternatives. The
twenty-six other
and as a result of

New appraisal level designs were then prepared, usually consisting
of a revised combination of existing features and associated
estimates. Likewise, the environmental assessments were
permutations of existing site information. In some cases (e.g.,
slurry pipelines), a completely new design and cost estimate
required. To a certain extent, this process became iterative
optimal combinations were sought.

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Subsequent to the initial appraisal level design process, the final
PIQ Report was published. This timing dictated that the appraisal
designs be based on preliminary collection estimates. The information
in the PIQ, in conjunction with information later published in the
Verification Report, was used to revise earlier estimates of the saline
spring collection capability in the Glenwood Springs area.

The concerns of local citizens, both in the Glenwood-Dotsero Springs
area and in the treatment locations, have been important considerations
in the plan development process. Acceptability is one of the four key
parameters by which alternatives are compared. The BOR scheduled
regular public meetings throughout the Phase I Investigation to solicit
public involvement in the plan selection process, including the
expression of local concerns not readily apparent to project personnel.
A planning team was formed consisting of local individuals with
specific interest in the salinity study. The planning team met
regularly throughout the study and provided recommendations to the
BOR.

Initially, the planning team (or the public at large) was to recommend
new alternatives for analysis. The complex nature of the alternatives,
as well as the complete listing of permutations prepared by the BOR and
the contractor, caused the planning team to concentrate heavily on
potential problems with existing alternatives. The beneficial use of

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