HomeMy WebLinkAbout03/03/1992, C-4 - LAGUNAL LAKE GOLF COURSE PROJECT ii�N1►r►►i�►IIIIII���' UUlll city of San lis OBISPO
COUNCIL AGENDA REPORT
Golf Course Well & Irrigation Line
Page 2
FISCAL IMPACT:
Engineer's Estimate $34,500 j
Contingency 2.000
36,500
This includes $22,000 for the development of the well and $14,500
for the replacement of the 4" irrigation line.
Estimated Cost of the entire project:
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Phase 1 $23, 300 - Work Complete - Drill wells to locate a water source;
case acceptable well and seal abandoned holes.
Phase 2 $ 3,500 - Work Complete - Design improvements to install pumps,
controls and pipe to connect to irrigation system.
Phase 3 $36,500 - Estimate to install pump, controls, electrical
service, water line to the well, and replacement of
520 feet of 4 inch irrigation line.
Total $62 , 300
Estimated Savings:
The portion of this project that develops the well will result in cost
savings that will offset the construction costs. Consumption of City
water will be reduced by 10 acre feet per year. To accomplish this
savings there is an increase in the cost of electricity and
maintenance.
COSTS THAT WILL BE AVOIDED:
Present cost of 10 acre feet of water $10, 500
(435,600 cubic feet) @$2 .40 per 100 cubic feet
COSTS THAT WILL BE ADDED:
Electricity to pump 10 acre feet of water $ 4,500
at $0. 12 per kilowatt-hour.
Maintenance and cost of future $ 2, 000 S 6,500
replacement of pump & motor.
ANNUAL SAVINGS $ 41000
PRESENT VALUE of annual savings based on 10 years $ 26,800
and investment interest rates of 8% (lower
interest rate will increase Present Value)
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I�IIIII^�I Ilulll MEETING DATE:
�IIIN�I II �_� CIVJ of Sdn LUIS OBIS O March 3, 1992
ITEM �E
COUNCIL AGENDA REPORT NUMBERC.
FROM: David F. Romero, Public Works Director /�06
PREPARED BY: Lane Wilson, Parks and Buildings ManagerN�l/V
David P. Pierce, Projects Manager o
SUBJECT: Laguna Lake Golf Course, Well Development &
Irrigation Line Replacement, City Plan No. P-53L
CAO RECOMMENDATION:
By motion, approve plans and specifications for "Laguna Lake Golf
Course, Well Development & Irrigation Line Replacement", City Plan
No. P-53L and authorize soliciting of bids and contract award by the
CAO, if the lowest responsible bid is within the Engineer's cost
estimate.
DISCUSSION:
Irrigation of the Laguna Lake Golf Course consumes 40 acre-feet of
water a year. Half of this water is provided by an existing well.
This well water does not meet drinking water standards but is adequate
for irrigation.
A project to provide a reservoir and pump station so that the well
water could be stored during the day would have cost $149, 000. At that
price the project was not cost effective. Therefore the scope was
changed to adding an additional well.
Three additional holes were drilled at the Golf Course to locate
additional water. The last hole. produced 25 gpm. Use of water from
this well will increase the Golf Course's use of well water to 75% of
the total need.
In addition to providing the equipment to develop the well, this
project includes the replacement of a 520 foot section of failed four
inch irrigation line that runs up the easterly side of the creek has
failed. This line is on the adjacent property belonging to the
Congregational Church and needs to be relocated. Accomplishing the
irrigation line replacement with this project will result in savings as
the electrical conduit for the well pump follows the same routing.
CONCURRENCES:
The Community Development Department has determined that a formal
environmental assessment is not required for this underground utility
project. Permits have been obtained from the Corps of Engineers and
the State Department of Fish and Game for the underground pipe and
cable crossing of Prefumo Creek.
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°1�����►►�►{Illii�l��'�u►���III city or San JS osispo
COUNCIL AGENDA REPORT
Golf Course Well & Irrigation Line
Page 3
Funds Available•
The FY 1989-90 CIP Budget (Page E-11) provided $50,000 for a Water Tank
which has been abandoned as a more expensive option than a well. Any
additional funds should come from the Capital Outlay Fund's Capital
Control Account.
Plans and Specifications are available for review in the City Council
Office
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