WSP05057

• File Number: 8270.100
• Description: Colorado River Basin Water Quality/Salinity -- Misc Water Quality
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1983
• Title: Colorado River Water Quality Improvement Program - Status Report
• Water Supply Pro - Doc Type: Report/Study

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Unit

Cost-effectiveness
(to deliver water
to plant boundary)

Net Federal
cost-effectiveness
(after adjustments
for incremental
cost and/or credit)

LaVerkin Springs
McElmo Creek
B;g Sandy River

$ 392,000
1,017,000
1,820,000

$795,000
880,000
520,000

A review of table 4 earlier in this report shows that cost-effectiveness
varies widely for the various units and the saline water use and dis-
posal opportunities alternatives --from a low of $240,000 annually for one
coal slurry pipeline to over $5 million a year for long distance export
di sposal.

Assuming a cost of $2 million per mg/L would be required to remove the
remaining 1.6 million tons of salt annually or an equivalent of about
160 mg/L, the annual cost could be as much as $320.000,000. Or, if the
second lowest alternative was used to remove 160 mg/l at $520,000 per mg/L,
the annual cost could be as low as $83,200,000. Using the relationship of
investment costs to annual costs suggested in table 8, the investment cost
of removing 1.6 million tons of salt would be approximately $832,000,000 to
$3,200,000,000,

In summary, the range of total estimated construction funding costs to meet
full program objectives is shown below:

$ millions

For total reduction of 1.2 million tons
of salts dnnual by agricultural
source control and Paradox Valley Unit

690 - 770

For total r-eduction of 1.6 million tons
of salts annual by other means (desalt-
ing, evapor-ation, energy uses, etc.)

832 3,200
$1,522 3,970

STATUS OF INVESTIGATIONS

Units Author-;zed for Construction

At the initiation of the CRWQIP, prior studies of the EPA, the Colorado
River Board of California, and the Bureau of Reclamation were reviewed to

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