HomeMy WebLinkAbout2007-06-19; City Council; 19032; Poinsettia Sever Lift Station upgradeCITY OF CARLSBAD - AGENDA BILL
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MTG.
19,032
6/19/07
DEPT. ENG
AUTHORIZATION TO ADVERTISE BIDS FOR
POINSETTIA SEWER LIFT STATION UPGRADE,
PROJECT NO. 3875
DEPT. HEAD
CITY ATTY.
CITY MGR.
RECOMMENDED ACTION:
Adopt Resolution No. 2007-136 authorizing the City Clerk to advertise bids for the Poinsettia
Sewer Lift Station Upgrade, Project No. 3875.
ITEM EXPLANATION:
The Poinsettia Lift Station was constructed in 1998 and is located on Poinsettia Lane, east of
Alicante Road. The Poinsettia Lift Station is a major wastewater facility in the City with the capacity to
pump up to 3 million gallons of wastewater per day from three major developments referred to as
Carrillo Ranch, Bressi Ranch, and Villages of La Costa. As part of Engineering and Operations
on-going facility assessments, a complete review of the Poinsettia Lift Station was made.
In Agenda Bill No. 18,801 on November, 14, 2006, findings from a Preliminary Design Report
prepared for the lift station were presented to Council recommending three primary improvements
which are summarized below:
• Replace the three existing pumps with new pumps. It was determined that these pumps have
now reached the end of their useful life and require replacement as soon as possible.
In addition to pumping wastewater, which contains grit, sand, stringy material and solids, these
pumps have the highest discharge pressure of all City lift stations approaching 250 feet total
dynamic head. This pressure requires high rotational speeds to pump the wastewater resulting
in significant radial thrust. This force places a high load-carrying capacity on shafts and
bearings, with wear occurring in bearings, seals, shaft sleeves and wearing rings.
• Install an odor control system to reduce any potential impacts to the surrounding community
from odor levels that might occur. At the time the lift station was constructed, its remote
location was sufficient to not have any potential impacts to the surrounding community from
odor levels that might occur. Although provisions were made for a future odor scrubber, the
operation, maintenance, and replacement cost of the equipment was avoided by not installing
an odor scrubber under the original construction. However, the Preliminary Design Report
recommends that the wet well exhaust now be directed through an odor scrubber to mitigate
potential impacts to housing being constructed adjacent to the site.
• Install noise abatement modjfications and equipment. Sound enclosures for outdoor fans will
be incorporated to reduce noise levels impacting adjacent housing.
Contract documents and plans have been prepared for the project incorporating the above
requirements and are on file in the Public Works/Engineering office.
ENVIRONMENTAL IMPACT:
This project is categorically exempt from the environmental review process under Section 15302(c) of
Title 14 of the California Code of Regulations.
FOR CITY CLERKS USE ONLY.
COUNCIL ACTION: APPROVED
DENIED
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AMENDED
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FISCAL IMPACT:
The Engineer's Estimate for the total cost of the Poinsettia Sewer Lift Station Upgrade is shown in
Table 1.
TABLE 1
Poinsettia Sewer Lift Station Upgrade, Project No. 3875.
Design Engineering Cost
Estimated Construction Cost
Construction Contingency (10% of construction cost)
Inspection, Testing, and Construction Management (10% of construction cost)
PROJECT TOTAL COST
CURRENT APPROPRIATION
ADDITIONAL APPROPRIATION REQUIRED
ESTIMATED
COSTS
65,000
400,000
40,000
40,000
$545,000
$545,000
NONE
FUNDING
SOURCE
Sewer
Replacement
Funds
The total project cost is estimated at $545,000 for the construction of the Poinsettia Sewer Lift Station
Upgrade project. Sufficient funds are available from the Sewer Replacement fund.
Staff recommends approving the plans and specifications and authorizing the City Clerk to advertise
for bids for the Poinsettia Sewer Lift Station Upgrade, Project No. 3875.
EXHIBITS:
1. Location Map.
2. Resolution No.2007-136
Sewer Lift Station Upgrade, Project No. 3875.
authorizing the City Clerk to advertise bids for the Poinsettia
DEPARTMENT CONTACT: David Ahles, (760) 602-2748, dahle@ci.carlsbad.ca.us
"2.
LOCATION MAP
SITE
NOT TO SCALE
PROJECT NAME
POINSETTIA SEWER LIFT STATION
UPGRADE
PROJECT
NUMBER
3875
EXHIBIT
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DRAWN BY: SCOTT EVANS, CARLSBAD ENGINEERING DEPT. 05/21/07 H: \CAPITAL IMPROVEUNT PROGRAU\X75 POINSEWA UFT STAT10N\PLANS A EXHIBirS\3a75.DWG
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RESOLUTION NO. 2007-136
2
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
3 CARLSBAD, CALIFORNIA, AUTHORIZING ADVERTISEMENT OF
BIDS FOR POINSETTIA SEWER LIFT STATION UPGRADE,
4 PROJECT NO. 3875.
5 WHEREAS, the City Council of the City of Carlsbad, California, desires to replace the
6 existing pumps at the existing sewage lift station and install improvements to control the odor and
7 reduce the noise levels currently produced by the lift station; and
8 WHEREAS, the plans and specifications for furnishing of all labor, materials, tools,
9 equipment, transportation, and other expenses necessary or incidental to the Poinsettia Sewer Lift
10 Station Upgrade, Project 3875, have been prepared and are on file in the Public Works-
11 Engineering Department of the City of Carlsbad and are incorporated herein by reference; and
12 WHEREAS, this project is categorically exempt from the environmental review process
13 under Section 15302(c) of Title 14 of the California Code of Regulations.
14 WHEREAS, Capital Improvement Program funds are available in the amount of
15 $545,000 for completion of the Project; and
16 NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Carlsbad,
17 California, as follows:
18 1. That the above recitations are true and correct.
19 2. That the plans, specifications, and contract documents for the Poinsettia Sewer
20 Lift Station Upgrade, Project 3875, are on file in the Public Works-Engineering Department of the
2^ City of Carlsbad and are hereby approved.
22 3. The City Clerk of the City of Carlsbad is hereby authorized and directed to
23 publish, in accordance with State law, a Notice to Contractors Inviting Bids for the construction of
24 the Poinsettia Sewer Lift Station Upgrade, Project 3875, in accordance with the plans,
25 specifications, and contract documents referred to herein.
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PASSED, APPROVED AND ADOPTED at a Regular Meeting of the City Council
of the City of Carlsbad on the 19th day of June, 2007, by the following vote to wit:
AYES: Council Members Lewis, Hall and Packard
NOES: None
ABSENT: Council Members Kulchin and Nygaard
ATTEST:
'LORRAINE fyl. WOOD,
(SEAL)
POINSETTIA SEWERPOINSETTIA SEWERLIFT STATION UPGRADELIFT STATION UPGRADE
Location MapLocation Map
Poinsettia Lift Station HistoryPoinsettia Lift Station HistoryzCONSTRUCTED - 1998 zPURPOSE – Pump up to 3MGD wastewater from Poinsettia Lane to gravity sewer located in El Camino Real.zFORCEMAIN – ¾ mile 12” Dia. PVC Class 200 pipe.zBUILDINGS – pump building and equipment building.
Poinsettia Lift Station Poinsettia Lift Station Historical AccessHistorical Access2001 AerialFuture Poinsettia LaneUnpaved Access Road
Poinsettia Lift Station HistoryPoinsettia Lift Station HistoryAlicante Rd.Poinsettia Lane2006 AerialLift Station
Current ViewCurrent View
Proposed UpgradesProposed UpgradeszPumps - Replace the three existing pumps with new pumps.zOdor – Install odor control system.zNoise – Install noise abatement modifications.
Pumping OperationsPumping OperationszThree 125 hp pumps.zHighest lift (250 feet) and pressure required in City.zSeal failures between the pump and motor every 2 years. (Repaired under pump warranty)zBolt failure in 2006 caused by wear.
Pumping OperationsPumping OperationsBolt failureMotorPump
Operational ImpactOperational Impact
New PumpsNew PumpszChanging pump type from dry-pit submersible to vertical close-coupled solids-handlingzVertical close-coupled pumps–Motor and pump separated. –Oil cooled vs. cooled by wastewater.–Higher motor efficiencies. –New pump design to reduce seal failures and wear.–1yr. Manufacture warranty–5yr. Extended warranty purchase.
Odor Control UpgradeOdor Control UpgradezCurrent odor control is by chemical addition (Bioxide) for force main.zInstall ventilation to wet well for employee safety.zInstall odor scrubber.
Noise AbatementNoise AbatementzEnclose equipment building.zProvide acoustical louvers.
Poinsettia Lift Station Poinsettia Lift Station Project CostProject CostDesign Engineering Costs$ 65,000Estimated Construction Costs$ 400,000Inspection & Construction Management$ 40,000Total$ 545,000Current Appropriation$ 545,000Construction Contingency$ 40,000Additional Appropriation RequiredNONE
Project ScheduleProject SchedulezContract Award – September 2007zNotice to Proceed – December 2007zComplete Construction – May 2008
Concludes PresentationConcludes Presentation