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• Board Meeting Date: 7/19/2009
• Description: CF Section - New Project Loans - Farmer's Reservoir and Irrigation Company - Milton Reservoir and Barr Lake Improvements Project
• Board Meetings - Doc Type: Memo

Farmers Reservoir and Irrigation Company Agenda Item 10
July 14, 2009
Page 6 of 8
The schedule for this portion of the Project is: SEO review during July - September 2009,
bid the Project in September 2009, start construction in November 2009, and complet e
construction by the end of February 2010. The cost estimate for this portion is as
follows:
TABLE 2
PROJECT COST - MILTON RESERVOIR SPILLWAY
Construction $ 834,000
Testing $1 7 , 0 00
Contingency $83, 0 00
Construction Management $ 50,000
TOTAL $ 98 4 , 0 00

C. Barr Lake Spillway
Similar to Milton Reservoir, the SEO’s sp illway evaluation at Barr Lake indicated that
its spillway needs to be enlarged to meet State standards.
Alternative No. 1 No Action:
– This alternative was considered unacceptable because by
not increasing the capacity of the spillway, the Company would be ignoring the
requirements of the SEO and Barr Lake would likely be put under a fill restriction.
Alternative No. 2 (SELECTED) Enlarge the Spillway with a Concrete Control
–
St ructure and a Downstream Soil Cement Channel:
This alternative involved
increasing the spillway length . This alternative would meet the Company ’s objective of
improving the spillway to safely pass the design storm event as dictated by the SEO.
This will allow the Company to continue to operate Barr Lake at its full decreed amount
without the concern of dam overtopping. The cost for this alternative was estimated to be
$2,1 6 2,000.
Alternative No. 3 Enlarge the Spillway with a Concrete Control Structure and a
–
Downstream Concrete Channel:
This alternative involved modifying the existing
spillway by expanding it and using concrete lining as opposed to soil cement lining from
A lternative No. 2. The cost for this alternative was estimated to be $4,612,000.
The Company has chosen Alternative No. 2 because it meets the objective of continued
safe operations o f the dam, it complies with the SEO’s directive that the spillway be
enlarged, it allow s the Company to continue to store its maximum decreed water volum e,
and was the most cost - effective solution.
The current spillway, which is an informal low depression, will be widened to 185 feet.
The elevation of the new spillway will not be changed. The approach and hydraulic
control section of the spillway will be constructed out of concrete. The concrete slab will