HomeMy WebLinkAbout09 - Water Well RehabilitationCITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Agenda Item No. 9
September 9, 2008
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Public Works Department
Andy Tran
949 - 644 -3315 or atran @city.newport- beach.ca.us
SUBJECT: WATER WELL REHABILITATION — DOLPHIN AND TAMURA SHALLOW
WELLS - AWARD OF CONTRACT NO. 4053
RECOMMENDATIONS:
1. Approve the specifications.
2. Award Contract No. 4053 to General Pump Company for the Total Bid Price of
$255,100.00, and authorize the Mayor and the City Clerk to execute the contract.
3. Establish an amount of $25,000.00 to cover the cost of unforeseen work.
DISCUSSION:
At 10:00 a.m. on August 12, 2008 the City Clerk opened and read the following bids for
this project:
BIDDER TOTAL BID AMOUNT
Low General Pump Company $255,100.00
2 Layne Christensen Company $280,689.00
The low total bid amount is 13 percent below the Engineer's Estimate of $293,000. The
low bidder, General Pump Company, possesses a California State Contractors License
Classification C -57 as required by the project specifications. A check of the Contractors
references indicates they have satisfactorily completed similar projects for other
municipalities.
Dolphin and Tamura shallow water wells were both drilled in 1996. The Dolphin shallow
well is located at 9649 Dolphin Avenue and the Tamura shallow well is located at 17399
Magnolia Street in the City of Fountain Valley. The wells are owned and operated by the
City of Newport Beach.
There has been a noticeable reduction in performance for both wells. The reduction is
primarily attributed to sediment build -up and clogging of the louvers in the well casing.
Over time, water wells typically experience such performance reductions due to frequent
pumping and natural build -up of minerals and sediments. Well rehabilitation methods
such as wire brushing and air bursting the well casing are usually performed in order to
Dolphin Deep Water Well Rehabilitation —Award of Contract No. 3978
December 11, 2007
Page: 2
restore production output to its original design. In addition, pumps and motors need to be
reconditioned periodically to maximize efficiency. If these water wells are not regularly
monitored and rehabilitated, they may experience catastrophic failure resulting in the loss
of the wells.
The work necessary for the completion of this contract consists of providing traffic control,
removal and reinstallation of pump and motor, mechanical well development, video
survey, test pumping, and reconditioning of existing pump and motor.
Pursuant to the Contract Specifications, the Contractor will have 70 consecutive working
days to complete the work.
Environmental Review:
This project is exempt from the California Environmental Quality Act (CEQA) pursuant
to Section 15301 of the CEQA Guidelines. This exemption covers the repair of existing
facilities involving negligible or no expansion of existing use.
Public Notice:
The Notice Inviting Bids was advertised in the City's official publication. Prior to starting
work, staff will meet with the adjacent schools to discuss construction impacts. Other
residents and businesses will not be directly impacted by this project.
Geotechnical, Material Testing, and Survey Services:
Geotechnical, material testing, and survey services are not anticipated for this project.
Funding Availability:
There are sufficient funds available in the following account for the project:
Account Description
Water Enterprise
Proposed uses are as follows:
Vendor
General Pump Company
General Pump Company
Prepared by:
�r
Andy Trani .E.
Senior Civil Engineer
Attachments: Project Location Map
Account Number
7503- C6001002
Total:
Purpose
Construction Contract
Construction Contingency
Total:
Amount
$ 280,100.00
$ 280,100.00
Amount
$ 255,100.00
$ 25,000.00
$ 280,100.00
Submitted by:
Stephen G. Badum
Public Works Director
N
! 1V E
s
A', f
SLATER AVE.__
DOLPHIN
WELL
t SITE
.A
0 7500 3000
Style (in feet)
FIGURE 1
WELL SITES LOCATION MAP