HomeMy WebLinkAbout06/17/2008, C4 - WATER REUSE PROJECT PARK CONVERSIONS AT ISLAY, FRENCH, LAGUNA LAKE AND LAGUNA HILLS PARKS, SPECIFIC counat I"�"D 6/17/08
acEnoa Repout
CITY OF SAN LUIS O B I S P O
FROM: Jay D. Walter, Director of Public Works
Prepared By: Barbara Lynch, City Engine
SUBJECT: WATER REUSE PROJECT PARK CONVERSIONS AT ISLAY, FRENCH,
LAGUNA LAKE AND LAGUNA HILLS PARKS,SPECIFICATION NO.
90702.
CAO RECOMMENDATION
1. Approve plans and specifications for "Water Reuse Park Site Conversions — Islay, French,
Laguna Lake, Laguna Hills."
2. Authorize staff to advertise for bids and authorize the CAO to award the contract if the lowest
responsible bid is within the Engineer's Estimate of$403,000.
3. Approve the transfer of$22,000 from the capital improvement plan completed projects account
to fund additional construction costs.
DISCUSSION
For several years the City has been pursuing use of treated (recycled) water from the Water
Reclamation Facility, to use for irrigation at various public and private facilities. This reduces
the demand on the City's limited drinking (potable) water supply. City parks with their expanses
of grass and plants, are attractive candidates for conversion from potable to recycled water. This
has already occurred at the Damon Garcia Sports Fields. Those fields were constructed with
recycled water in mind and so little was needed to complete the conversion.
This project will convert four parks: Islay, French, Laguna Lake, and Laguna Hills to recycled
water. Considerable work is required due to the current regulations for using recycled water.
Spray is not allowed on picnic areas and there must be no standing water by the time the facility
is open to the public each morning. The project plans include modifications to the picnic areas
through bench relocation or removal, or modifications to the irrigation system to adjust the spray
away from the tables. All valves must be specially marked to alert anyone working on the
irrigation system. In some cases, a new controller and increased piping is needed to shorten the
watering window during the night to allow drying time before use.
The park conversions have been in the budget since 2005, waiting the completion of the pipeline
and treatment plant modifications. That work is now complete and this conversion can proceed.
Considerable work will be completed at the connection points of the irrigation systems during
this project. For that reason, it is the appropriate time to also address an outstanding irrigation
problem at Islay Park. The system at Islay Park has performed marginally since its construction
and staff receives complaints regarding the park appearance as a result. Staff found that the
system is unable to deliver enough water to the irrigation heads to achieve the needed coverage.
Public Works staff has determined that a Booster Pump at this location will correct the problem
and will be less costly to install with this work than under separate contract. Public Works and
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Water Reuse Park Site Conversions Page 2
Utilities agree that this is an outstanding issue unrelated to the conversion and therefore
appropriately paid for with General Funds rather than Water Funds.
Timing
The summer construction season is already expected to be very busy for the construction staff.
For that reason, and the fact that work in the parks is better undertaken in the cooler months
because of reduced public use and need for watering, staff is recommending holding this project
for advertising until the fall. The Utilities Department is anxious to begin the work as soon as
possible and requested Public Works to obtain approval to advertise now so that as soon as the
work schedule allowed, the project could move forward without delay. Cost estimations are
anticipated to remain reasonably current as the work does not involve large volumes of fuel
based products.
CONCURRENCES
The California Department of Public Health has approved the project for construction. The
Community Development Department has given this project a categorical exemption from
environmental review.
FISCAL IMPACT
The 2005-07 Financial Plan, Appendix B, page 69 and the 2007-09 Financial Plan, Appendix B,
page 3-99 identify $250,000 each year to pay for conversion projects. There is currently a
balance of$701,940 to support this project.
Staff is proposing the use of funding in the completed projects account to provide the $22,000
currently estimated for installation of the booster pump for Islay Park irrigation. There is
currently a balance of$46;500 to support this expenditure.
Total Cost General Fund Portion
Construction: $350,000 $22,000
Construction Contingencies: $53,000
Total for Construction: $403,000 $22,000
Miscellaneous: (printing): $700
Materials Testing: $1,000
Total Cost: 404,700 $22,000
Staff is recommending a higher than normal contingency because some of the irrigation in this
project is very old and its condition and location are unknown.
ATTACHMENT
Location Map
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Water Reuse Park Site Conversions Page 3
AVAILABLE FOR REVIEW IN THE COUNCIL OFFICE
Plans and Specifications are available in the Council office for review.
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