HomeMy WebLinkAboutStaff Report 3.B 1/28/2013 •11 A
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DATE: January 28, 2013
11;1 TO: Honorable Mayor and Members of the City Council through City Manager
FROM: Dan St. John, F.ASCE—Director, Public Works &Utilities
Larry Zimmer, P.E. —Capital Projects Manager .
SUBJECT: Resolution Authorizing Award'of Contract for Primary Influent Pump Station
(PIPS) Duty Pump Replacement Project
RECOMMENDATION
It is recommended that the City Council approve the resolution authorizing the award of contract,
for the PIPS Duty Pump Replacement Project to Bartley Pump, Inc. in an amount not-to-exceed
$191,778.
BACKGROUND
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The Primary Influent Pump Station (PIPS), located at the site of the former Hopper Street
Treatment Plant, receives and pumps all of the City's wastewater to the Ellis Creek Water
Recycling Facility. PIPS is configured with two sets of pumps; one set of two small pumps
handle "dry-weather flows"; and, a set of four large pumps handle"wet-weather flows." The
existing dry-weather sewage pumps were installed in 1999,. and control operation modifications
made in 2002. Currently the dry-weather pumps are out-of-service,and the larger pumps are
operated at low speeds to convey dry weather flows. When running at reduced capacity, the large
pumps cannot handle fibrous materials and require service to de-rag the pumps every 24-48
hours. Operation of these large pumps at such a reduced capacity is energy inefficient. Replacing
the two smaller dry-weather pumps with modem sewage pumps will significantly improve the
r1� overall operational efficiency and reliability of the station.
City Council approved the purchase of two 60-horsepower pumps in November 2012. The
subject project contractor will remove the existing dry-weather pumps and support and install the
new pumps. The project includes new pump controls,instrumentation and installation of new
automatic speed drives to increase reliability and efficiency of the pump station during dry
weather operations.
The proposed action meets Council Goal: "Plan for and implement priority capital projects as
funding permits."
Agenda Revie :
City Attorne Finance Director City Manager 1
DISCUSSION
Shifting dry weather pumping to smaller, 60 I-1P pumps,from the larger 450 HP pumps should
result in annual energy savings of$80,000 - $100,000. It will extend the service life of the large
450 HP pumps by reducing annual run time by 90%. The cost to replace worn bearings and seals
on one large pump in 2010 was $30,000. Recent vibration analysis of the other large pumps
indicates similar repairs will be needed in the near future. The frequency of"de-ragging" will be
reduced or eliminated by limiting the use of the large pumps to wet weather events only.
Additionally, reducing the frequency of de-ragging pumps will shift approximately 450 man-
hours per year back to plant operations. It will'significantly improve safety by reducing exposure
to blood borne pathogens and infectious diseases associated with, staff de-rags the pumps and
lifts rag carts from the pump gallery to the disposal bin at ground level.
The Notice Inviting Bids was issued on December 13,2012. On January 16, 2013, six bids were
received as follows:
Name of Bidder Bid Total
Bartley Pump, Inc. $ 191,778 Lowest Responsible Bidder
Arnold Construction, Co. $ 200,000
Stiles Construction Co. $ 220,343
Pacific Infrastructure Corp. $ 233,600
Fort Bragg Electric, Inc. $ 251,485
Mark III Construction, Inc. $ 309,300
Engineer's Estimate $ 300,000
The lowest responsible bidder, Bartley Pump, Inc., has performed similar projects for the City of
Rohnert Park, the Sonoma County Water Agency, and the Wikiup-Larkfield Sanitation District.
Staff verified that Bartley Pump, Inc. possesses a valid Class A California Contractor's License,
license number 200068, which expires on April 30, 2014, that qualifies Bartley Pump, Inc. to
perform the work.
Construction is scheduled to begin in April of 2013 and to be completed in July of 2013.
Construction management and inspection will be conducted by City staff.
FINANCIAL IMPACTS
The total project budget for the PIPS Duty Pump Replacement Project (C66401201) is $574,000
of which $15,911.15 has been expended to date. Savings from the bid will remain in the project
account until project closeout; at which time the balance will be returned to the waste water CIP
fund. The following is a breakdown of the project budget:
Construction Contract (low bid)
Low Bid Contract Award $191,778
60 HP Pumps (City to Supply) $103,790
Design $ 50,000
2
Administration $ 5,000
11;,; Construction Management & Inspection $ 50,000
Salaries/Benefits $ 30,000
CIP Overheads I $ 9,000
;
Contingency $134,432
;,. TOTAL: $ 574;000
ATTACHMENTS
1. Resolution
2. Location Map
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3
Attachment.1 '
RESOLUTION AUTHORIZING THE AWARD OE CONTRACT FOR THE PIPS DUTY
PUMP
'REPLACEMENT;REPLACENIENT PiZOJECT
WHEREAS, city staff has prepared construction bid documents and advertised for construction
the Primary Influent Pump Station (PIPS) Duty Pump Replacement Project No. C66401201 ("the
Project"); and
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WHEREAS, in accordance with the City of Petaluma Charter and Municipal Code, California
Public Contract Code Section 20162 and other'applicable law, City staff solicited bids for the
Project; and
WHEREAS, the project was bid on December 13, 2012,
and six,(6) bids *ere received and
opened on January 16, 2013 in accordance with applicable law; and
WHEREAS,the lowest responsible bid for the Project was submitted by Bartley Pump, Inc.
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(Bartley Pump) from Santa Rosa, CA for $191,'778; and
WHEREAS, staff has determined that the Contractor's bid satisfies the bidding requirements for
the Project; and
WHEREAS, staff has verified that Bartley Pump possesses a valid California Contractor's
License, Class A, number 200068'that qualifies Bartley Pump to•p:erfor'm the Project; and
WHEREAS, the funds made available are in the 2012/2013 wastewater collection system
budget; and
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City hereby:
1. In accordance with the City of Petaluma Charter and''Muncipal Code,•California Public
Contract Code Section 20162 and other applicable law,.waives any and all non-
conformance in the bid of Bartley Pump for the PIPS Duty Pump Replacement Project,
Project No C66401201, finds the bid of$191,778'to be the lowest, responsive.bid and
further finds that Bartley Pump is the lowest responsible bidder.
,;; 2. Awards the contract for the PIPS Duty Pump Replacement Project,.Project:No. ' ,
C66401201 to Bartley Pump in the amount of$191,778, the amount of the lowest
responsive bid, conditioned on Bartley Pump's timely executing the project contract and
submitting all required documents, including but not limited to,.executed bonds,
certificates of insurance, and endorsements, in accordance with the'proj'ect bid
documents.
3. Directs staff to issue a notice of award to Bartley Pump.
4. Authorizes and directs the City Mana ei to execute the project contract on behalf of the
g ,. pJ
City of Petaluma upon timely submission by Bartley Pump,of the signed project contract
and all other required document, including but not limited to, executed bonds, certificates
of insurance, and endorsements, in accordance with the project bid documents.
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Attachment 2
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PRIMARY INFLUENT PUMP STATION (PIPS)
DUTY PUMP REPLACEMENT PROJECT
PROJECT NO. C66401201 '
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.,„ LOCATION MAP
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