BOARD00714

• Board Meeting Date: 7/9/1975
• Description: Agenda or Table of Contents, Minutes, Resolution
• Board Meetings - Doc Type: Meeting

based upon considerations of effectiveness, economics, and environmental
impacts. The 'estimateo'construction period will run from fiscal year
1977 to fiscal year 1980.

Economic Data

In terms of June 1975 prices, construction costs would be nearly $20 I
million, and total annual costs would be $1.6 million. . The cost for
removing one ton of salt would be $9.00. The control facilities in
Paradox Valley would remove up to 180,000 tons of salt per year, thereby
decreasing the salinity at Imperial Dam by about 16 mg/l annually.
This salinity reduction would affect the water users in the Lower Colo-
rado River Basin in terms of increased crop yields, reduced soil
leaching requirements, reduced management costs, lower water treatment
costs, less pipe corrosion, and reduced use of soap and detergents.

Potential Effects and Costs

Present salt loading of Dolores River (tons per year)
Estimated reduction in salt
Effect of reduction at Imperial Dam (mg/l)
.Cost effectiveness (5.625 percent over a 100 year period)

200,000
180,000
16

Total annual cost

$19,460,000
2,006,000
-449.000
$21,017,000
1,187,000
438.000
$ 1,625,000
$9.00

Construction cost (June 1975 prices)

Interest during construction

Less preauthorization costs

Total investment

Annual equivalent of investment
Annual OM&R

Cost per ton of salt removed

MR. STAPLETON: Are there any questions now on San Miguel or any of the
other projects?

SENATOR NOBLE: In the Dry Creek area, you spoke about
in with the Paradox salinity under control, so that we
and bring those lands back in.

how it might fit I
could go ahead

MR. COOK: At this point, Senator Noble, that opportunity may still lie
ahead of us.

SENATOR NOBLE: I think the people over there are still interested in

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