HomeMy WebLinkAbout2005-06-07; City Council; 18148; North Batiquitos Lift Station ImprovementsCITY OF CARLSBAD -AGENDA BILL
18,148 4B#
VITG. 6/07/05
DEPT. ENG
12
- TITLE: AWARD OF PACKAGE “B” CONSTRUCTION CONTRACT
AND APPROPRIATION OF FUNDS FOR THE
NORTH BATlQUlTOS LIFT STATION IMPROVEMENTS
PROJECT NO. 3809-2
CITY MGRa
RECOMMENDED ACTION:
Adopt Resolution No. 2005-1 74 accepting bids and awarding Package “B” construction
contract and appropriating additional funds for the North Batiquitos Lift Station Improvements,
Project No. 3809-2.
ITEM EXPLANATION:
Backa round:
North Batiquitos Lift Station (NBLS) is located on the north shore of Batiquitos Lagoon at
7831 Gabbiano Lane in Carlsbad. It receives wastewater by gravity from the North Batiquitos
Interceptor (NBI) sewer and pumps the flow westerly to the Encina Water Pollution Control Facility
for treatment, see Exhibit “1”. The lift station has a pumping capacity of approximately 3.2 million
gallons per day. The lift station facility also includes an emergency overflow reservoir with two hours
retention time capacity and an electrical building with an emergency generator.
The hydrogen sulfide levels in the wet well of the lift station are much higher than typical as
compared to other lift stations in the City. The high hydrogen sulfide levels can be attributed to the
low velocity in the sewer as a result of the relatively flat slope of the pipeline, which is controlled by
the topography of the lagoon shoreline. This has created an extremely corrosive environment that
has caused significant damage to metallic equipment in the wet well of the lift station. The purpose
of the Batiquitos Lift Station Improvement project is to reduce the hydrogen sulfide levels within the
wet well and to repair or replace the equipment that has deteriorated or failed. In order to develop a
strategy for improving the environment within the wet well, wastewater characterization studies were
performed and alternatives developed. All of the alternatives except one required significant capital
cost as well as increased operation and maintenance costs. The least costly alternative included the installation of an improved ventilation system and relocation of the exhaust stack within the facility.
Prior to selecting this alternative, air quality modeling was performed to assist in determining
whether the proposed ventilation improvements would create an odor problem in the vicinity of the
lift station. The results of the modeling show that air quality at the lift station site will not be
negatively impacted as a result of the improvements and that costly odor control equipment or
chemical addition systems will not be necessary.
In an effort to expedite some of the needed safety improvements at the lift station, the improvement
project was divided into two phases, referred to as Package “A and Package “B”. Package “A
included improvements enhancing operational safety and reliability, which staff determined to be
most critical. Construction of Package “A improvements were completed in April 2005.
Package “B” design of the lift station improvement project includes installation of the new ventilation
system and exhaust stack, as well as improvements necessary for operator safety and
maintenance. These improvements will provide a means to more safely remove pumps and fittings
from the dry well and to provide better access to the wet well for cleaning and equipment removal.
Page 2 of Agenda Bill No. 18,148
ITEM COSTS
CURRENT EXPENDITURES AND ENCUMBRANCES TO DATE: $31 8,230
Package “6” Construction Costs - Construction (Value Engineering Contract) $247,170 - Construction Contingency (1 5%) $37,076 - Project Administration, Inspection & Engineering Support $44,717
Package “By’ (Total Construction Costs)
TOTAL FUNDS APPROPRIATED $606,999
ADDITIONAL APPROPRIATION REQUESTED $40,194
$328,963 ,
TOTAL PROJECT COST 1 $647,193 ,
Award of Package “B” Contract:
On February 1 , 2005, through the adoption of Resolution No. 2005-025, City Council approved plans
and authorized the advertisement for bids for Package “B” improvements of the North Batiquitos Lift
Station. The Engineer’s Estimate for the construction of the project was $236,800. Eight (8) bids were
received on March 19, 2005, which are summarized on Table 1.
TABLE 1 -SUMMARY OF CONSTRUCTION BIDS
With a bid of $247,170, staff has determined that Value Engineering is the lowest responsive bidder.
All bid documents provided by Value Engineering are in order. Therefore, staff recommends that the
City Council award this project contract to Value Engineering.
FISCAL IMPACT:
The estimated cost to complete Package “A and Package “B”:
With the low bid exceeding the Engineer’s Estimate for construction, the total project cost including
construction contingencies exceeds total funds appropriated. Staff is requesting appropriation of an
additional $40,194 from the Sewer Replacement Fund for the completion of the project. Upon
completion of the project, unused contingency funds from Package “A” and “B” will be returned to
the Sewer Replacement Fund.
Page 3 of Agenda Bill No. 18,148
ENVIRONMENTAL REVIEW:
The proposed rehabilitation work is exempt from CEQA California Code of Regulations
Section 15301 (d) (“restoration or rehabilitation of deteriorated or damaged structures, facilities,
or mechanical equipment.. . .”). Therefore, the project satisfies the requirements to be determined
exempt under Section 15301 (d), and a Notice of Exemption has been filed by the Planning Director.
EXHIBITS:
I. Location Map.
2. Resolution No. 2005-174 accepting bids and awarding Package “B” construction
contract and appropriating additional funds for the North Batiquitos Lift Station Improvements,
Project No. 3809-2.
DEPARTMENT CONTACT: Terry Smith, (760) 602-2765, tsmit@ci.carlsbad.ca.us
LOCATION MAP
LEGEND
NBI NORTH
NBLS NORTH -----
BATlQUlTOS lNTERCEPTOR
BATlQUlTOS LIFT STATION
GRAVITY PIPELINE
FORCE MAIN
\ CITY OF ENClNlT6-
PROJECT NAME: PROJECT EXHIBIT 7 NORTH BATIQUITOS LIFT STATION IMPROVEMENTS NUMBER 3809-2
i
Cl DRAW BY: MS. H: \Copifol Improment Progrom\3809 N Bdiquilos Sewoge Lift Stotim Mod\Fions & Exhibits
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RESOLUTION NO. 2005-1 74
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
CARLSBAD, CALIFORNIA, ACCEPTING BIDS AND AWARDING
PACKAGE “B” CONSTRUCTION CONTRACT; AND APPROPRIATING
ADDITIONAL FUNDS FOR THE NORTH BATIQUITOS LIFT STATION
IMPROVEMENTS, PROJECT NO. 3809-2.
WHEREAS, a study of the North Batiquitos Lift Station has identified the need for
mprovements to enhance operational safety and includes the repair and replacement of existing
squipment; and
WHEREAS, the project has been divided into two phases, Package “A and Package “B”,
Nith Package “A providing improvements identified as most critical for operational safety,
and Package “B” providing additional improvements for the lift station’s operation and
maintenance; and
WHEREAS, the proposed rehabilitation work in Package “B” is exempt from CEQA under
Zovernment Code Section 15301 (d) (“restoration or rehabilitation of deteriorated or damaged
jtructures, facilities, or mechanical equipment.. . ”); and
WHEREAS, a Notice of Exemption has been filed by the Planning Director for the
\lorth Batiquitos Lift Station Improvements, Package “B”; and
WHEREAS, on February 1, 2005, through the adoption of Resolution No. 2005-025, the
3ty Council approved plans and specifications for the North Batiquitos Lift Station Improvements,
’ackage “8”; and
WHEREAS, eight (8) sealed bids were received on April 19, 2005 for the project; and
WHEREAS, staff has determined Value Engineering, Inc., submitted the lowest
*esponsive and responsible bid on the project; and
WHEREAS, the bid submitted by Value Engineering, Inc., of $247,170 exceeds the
wgineers cost estimate of $236,880; and
WHEREAS, the total estimated cost to complete the project now exceeds appropriated
unds; and
WHEREAS, City staff request additional appropriation of $40,194 from the Sewer
?eplacement Fund to complete the project; and
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WHEREAS, City staff recognizes the need for and recommends the improvements
provided in Package “B”.
NOW, THEREFORE, BE IT RESOLVED, by the City Council of the City of Carlsbad,
California, as follows:
1.
2. That the bid of $247,170 submitted by Value Engineering, Inc., for the
That the above recitations are true and correct.
North Batiquitos Lift Station Improvements, Package “B”, is accepted and the Mayor is hereby
authorized to execute a contract therefore.
3. That the City Manager is hereby authorized to approve construction change orders
up to $37,076 for Value Engineering, Inc., for the North Batiquitos Lift Station Improvements,
Package “B”.
4. That the award of this contract is contingent upon Value Engineering, Inc.,
executing the required contract and submitting the required bonds and insurance policies,
as described in the contract, within twenty (20) calendar days of adoption of this resolution.
The City Manager may grant reasonable extensions of time.
5. That the Finance Director is hereby authorized and directed to appropriate an
additional $40,194 from the Sewer Replacement Fund to Project No. 3809.
PASSED, APPROVED AND ADOPTED at a regular meeting of the Carlsbad City Council
held on the 7th day of June , 2005 by the following vote, to wit:
AYES: Council Members Hall, Kulchin, Packard, Sigafoose
NOES: None
ABSENT: CounciJ Member Lewis
CLAUDE A. LEWIS, M%yor
MATT HALL, Mayor Pro-Tem
ATTEST
Qf&L Q< %;ehA?d; &&L&
LORRAINE M. WOOD, City Clerk