HomeMy WebLinkAboutItem 1d: Contract for the Orange Grove Well 1A & 2A Rehabilitation Project.DATE: March 19, 2013
TO: Honorable Mayor and City Council
STAFF REPORT
Public Works Services Department
FROM: Tom Tait, Public Works Services Director
By- Ken Herman, Deputy Public Works Services Director
Tiffany Lee, P.E., Associate Civil Engineer
SUBJECT: AUTHORIZE AND DIRECT THE CITY MANAGER TO EXECUTE A
CONTRACT WITH LAYNE CHRISTENSEN CO. FOR THE WELL
INSPECTION AND REHABILITATION OF ORANGE GROVE WELL 1A
AND WELL 2A PROJECT IN THE AMOUNT OF $305,205.96
Recommendation: Approve
SUMMARY
The Public Works Services Department has a groundwater well inspection and
rehabilitation program to ensure that the City's municipal wells are in good working
condition. To ensure the City is receiving the most competitive prices and quality
service for the inspection and rehabilitation of Orange Grove Well 1A and Well 2A, a
formal bid was conducted and Layne Christensen Co. submitted the lowest responsive
bid. Therefore, it is recommended that the City Council authorize the City Manager to
execute a contract with Layne Christensen Co. for the Well Inspection and
Rehabilitation of Orange Grove Well 1A and Well 2A Project in the amount of
$305,205.96.
DISCUSSION
The City operates 15 groundwater wells, which produce an average of 16,500 acre -feet
of water to City of Arcadia customers each year. This equates to 5.4 billion gallons of
water per year, or about 270 gallons per person per day. In order to ensure the reliable
operation of these wells, regular well maintenance and rehabilitation is crucial to water
quality and the efficient operation of the well system.
The municipal water industry standard for well maintenance is to remove and inspect
well pump assemblies and inspect the well pump and casing every 7 to 10 years. This
practice is also supported by the American Water Works Association. The City staff has
developed a well inspection and rehabilitation program following these guidelines. Each
year, one to two wells are selected for inspection, based on the time since the last
Orange Grove Wells 1A & 2A Inspection and Rehabilitation Project
March 19, 2013
Page 2 of 3
inspection, and the results of efficiency tests performed on the wells. This preventive
maintenance protects against unplanned well outages and avoids the need to
supplement the City water supply with expensive imported water. The wells to be
inspected and cleaned for this fiscal year are Orange Grove Well 1A, last cleaned in
2004, and Orange Grove Well 2A, last cleaned in 2005.
Orange Grove Well 1A was drilled in 1921 and Orange Grove Well 2A was drilled in
1928; the wells are part of a group of four wells that are the only source of supply from
the Santa Anita Subarea of the Raymond Groundwater Basin. Both of the wells have
been rehabilitated multiple times during their operational life. The production of Orange
Grove Well 1A and Orange Grove Well 2A are significantly below their optimum
performance, most probably due to the build -up of mineral deposits on the well casings
and the wear and tear on the pump components.
As part of the inspection program, staff works with Southern California Edison
representatives to test the efficiency of all the City wells on an annual basis and then to
determine the annual energy savings and incentive payments that could be available to
the City as a result of performing efficiency improvements on the wells. Applications
have been submitted to Edison for Orange Grove Wells 1A and 2A for incentive
payments back to the City of $9,735, and expected annual energy savings of $64,000
for the two wells.
It is difficult to anticipate what might need to be done to the wells until they are removed
and inspected by the contractor and staff. Therefore, a "shopping list" of possible
repairs is prepared in the bid specifications to include activities and materials expected
to be needed in the rehabilitation of the wells. Once the inspection of the wells is
completed a final scope of work will be defined. In most cases, not all of what is
included in the bid specifications is actually used, and it is anticipated that the final cost
of the work will be much less than the awarded bid price.
A Notice Inviting Bids was published in the City's adjudicated newspaper and bid
packages were distributed to area contractors. The City Clerk received three sealed
bids on February 19, 2013, with the following result:
Rank Bidder Location Bid
1. Layne Christensen Co. Redlands, CA $305,205.96
2. General Pump Company San Dimas, CA $309,800.00
3. Best Drilling and Pump, Inc. Colton, CA $522,838.00
Bid documents were carefully reviewed for content and the contractors' backgrounds
and recent projects were investigated and all references reported positively to the
contractor's competence and performance in completing projects of similar size and
scope. In addition, it should be noted that Layne Christiansen Co. performed the last
rehabilitation of Orange Grove Well 1A and Live Oak Well in 2004 and all work was
successfully completed to the City's satisfaction. It has, therefore, been determined that
Orange Grove Wells 1A & 2A Inspection and Rehabilitation Project
March 19, 2013
Page 3 of 3
Layne Christensen Co. has provided the lowest responsive bid to perform the work.
Therefore, it is recommended that the City Council authorize the City Manager to
execute a contract with Layne Christensen Co. for the Well Inspection and
Rehabilitation of Orange Grove Well 1A and Well 2A Project in the amount of
$305,205.96.
ENVIRONMENTAL ANALYSIS
This well inspection and rehabilitation project is considered a Class 1 exemption as
defined in Section 15301(b) of the California Environmental Quality Act since the project
consists of the maintenance of existing public facility providing public utility service.
FISCAL IMPACT
This project is included in the Fiscal Year 2012 -13 Capital Improvement Program with a
total budget of $300,000. The cost of the contract recommended to be awarded is
$305,205.96. However, it is anticipated that not all of the budget will be used. The bid
specifications included all work that could be done with unit costs for labor and
replacement of equipment. Once the well is pulled a defined project cost will be
determined. In addition, applications have been submitted to Edison for Orange Grove
Wells 1A and 2A for incentive payments back to the City of $9,735. Therefore, the
existing budget should be adequate for this project.
RECOMMENDATION
It is recommended that the City Council authorize and direct the
execute a contract with Layne Christensen Co. for the Well
Rehabilitation of Orange Grove Well 1A and Well 2A Project ii
$305,205.96.
Approved:
Dominic La77ari
City Manager
Attachment: Project Location Map
City Manager to
Inspection and
the amount of
Well Inspection and Rehabilitation of
Orange Grove Well 1A and Well 2A Project
Project No.: 72863513
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