HomeMy WebLinkAboutStaff Report 3.F 09/11/2017DATE:
September 11, 2017
Agenda Item #3.F
TO: Honorable Ma or and Members of the City Council through City Manager
FROM: Da 4' St. CE — Director, Public Works & Utilities Department
Larry immer, P.E. — Deputy Director, Public Works & Utilities Department
SUBJECT: Resolution Accepting Completion of the D'Arcy & Harty Construction Inc.
Contract for the Sewer Main Replacement 2016 -2017 Project
RECOMMENDATION
It is recommended that the City Council adopt the attached Resolution Accepting Completion of
the D'Arcy & Harty Construction Inc. Contract for the Sewer Main Replacement 2016 -2017
Project.
BACKGROUND
To maintain and improve the condition of the City's water and wastewater systems, the Public
Works and Utilities Department annually replaces or rehabilitates deteriorating water and
sanitary sewer mains throughout the City. City staff has developed a 5 -year priority list of water
and sewer lines needing replacement. These projects are cross - referenced with the City's street
maintenance program, development projects, and proposed PG &E work to endeavor to assure
that new or nearly new pavement will not be impacted.
The sewer replacement projects included backyard pipe bursting at La Cresta Drive, Belleview
Drive, Haven Drive, Pierce Street, Hill Drive, and Scenic Way. Pipe bursting is a process
requiring less excavation where a new pipe is threaded through an old pipe, bursting the old pipe
as it goes so the new pipe can be the same diameter as the old pipe. The project included
approximately 3,000 linear feet of a pipe bursting method of main replacement. The private
sewer laterals were reconnected at the mains and sewer manholes were rehabilitated.
Approximately 400 linear feet of sewer main in portions of 7th Street and 8th Streets were
replaced using standard removal and replacement methods. The project also included the
removal and replacement of sewer manholes along the entire length of the project.
Bids were opened on February 22, 2017. On March 20, 2017, the City Council authorized the
award of the construction contract for Sewer Main Replacement 2016 -2017 Project to D'Arcy &
Harty Construction of San Francisco in the amount of $630,612.00. Construction began in May
2017 and was completed in July 2017, within the allowable contract time.
DISCUSSION
The streets that were selected for this project were evaluated based on the condition of the pipe,
the maintenance history, the inflow and infiltration (I &I) into the City's sewer system, and the
projects construction budget. The construction bid by D'Arcy & Harty came in lower than
estimated which allowed for a larger construction contingency. The contingency was used to
fund a change order to replace the deteriorated sewer main on Oak Lane and Webster Street,
which were selected because they are a maintenance priority and are within the same area of the
original contract scope. The project was designed, managed, and inspected by Public Works and
Utilities engineering staff. The contractor performed satisfactorily and there are no outstanding
claims or issues.
The final contract amount is $755,346.60, which includes all overruns, underruns and six change
orders totaling $124, 734.60. Change orders were approved for $44, 490 for pipe bursting of Oak
Lane, $8,775 for open trench driveway at 155 Belleview Drive, a deduction of $27,610.00 for
scope change on Scenic Way, $6,500 to replace the concrete driveway on Manor Way,
$82,275.00 for open trenching Webster Street and $10,400.60 for various force account work.
All overruns and underruns added up for a deduction of $96.00 for the quantities that were
actually used.
The proposed action meets Council Goal: "Plan for and implement priority capital projects as
funding permits."
FINANCIAL IMPACTS
The total cost for the project is summarized below:
uses
Approved Budget
Actual Project Costs
Design
$ 52,000
$ 52,000
Legal
$ 0
$ 0
Planning/Environmental
$ 0
$ 0
Construction Contract
$630,612
$755,346.60
Construction Management
$ 52,000
$ 52,000
Project Contingency
$125,000
$ 0
Administration
$ 4,000
$ 4,000.00
CIP Overhead
$ 3,000
$ 3,000.00
TOTAL
$866,612
$866,346.60
Funding Sources
Waste Water Capital
$866,612
$866,346.60
TOTAL
$866,612
$866,346.60
Note: City staff salary and benefits costs are included in appropriate project phases
Unused funds will be returned to the enterprise fund reserve account for use on future projects.
The proposed action will not cause any unanticipated fiscal impacts to the City's budget.
2
ATTACHMENTS
1. Resolution
2. Location Map
Attachment 1
RESOLUTION ACCEPTING COMPLETION OF THE
WARCY & HARTY CONSTRUCTION INC. CONTRACT FOR THE SEWER MAIN
REPLACEMENT 2016 -2017 PROJECT
WHEREAS, in accordance with Section 68 of Article X of the City of Petaluma Charter,
Section 20162 of the California Public Contract Code and other applicable law, the City of
Petaluma solicited bids for the Petaluma Complete Streets project ( "Project "); and
WHEREAS, bids for the Project were opened on February 22, 2017, in accordance with
California Public Contract Code Section 4104.5 and other applicable law; and
WHEREAS, the apparent low bid for the Project was the bid of D'Arcy & Harty
Construction Inc.; and
WHEREAS, by Resolution No. 2017 -047 N.C.S. adopted March 20, 2017, the City
Council of the City of Petaluma found the bid of $630,612 for the Project to be the lowest
responsive bid and awarded the construction contract to D'Arcy & Harty Construction Inc.
conditioned on their timely executing the Project contract and submitting all required documents,
and authorized and directed the City Manager to sign the Project contract on behalf of the City;
and
WHEREAS, the following change orders affecting the Project amount have been
approved:
Change
Description
Amount
Order #
#1
Oak Lane
$ 44,490.00
#2
Open Cut Driveway on Belleview Drive
$ 8,775.00
#3
Scope Change Scenic Way
<$27,610.00>
44
Manor Way Driveway
$ 6,500.00
#5
Webster St
$ 82,275.00
#6
Force Account
$ 10,400.60
Total Change Orders
$124,830.60; and
WHEREAS, the contractor performed satisfactorily with no outstanding claims or
performance issues, and final construction contract amount as amended including all change
orders, overruns, underruns is $755,346.60; and
WHEREAS, City staff have inspected the Project and determined that it has been
completed in substantial accordance with the contract requirements subject to the Contractor's
continuing warranty and other obligations pursuant to the contract; and
WHEREAS, based on the foregoing, staff recommends acceptance of the Project on
behalf of the City.
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NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Petaluma
as follows:
The contract entitled Sewer Main Replacement 2016 -2017, Project No. C66401626 with
a final construction contract amount of $755,346.60 is accepted as complete subject to
the Contractor's continuing warranty and other obligations pursuant to the contract.
2. The City Clerk is hereby authorized and directed to file a Notice of Completion
concerning the Project with the Sonoma County Clerk's Office within ten (10) days of
the date of this Resolution.
3. Staff is hereby authorized and directed to release all undisputed retention not subject to
pending change orders within sixty (60) days of the date of this Resolution and in
accordance with the terms of the Project contract, the Petaluma City Charter, California
Public Contract Code Section 7107 and applicable law.
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FAPROJECT SITE
SEWER MAIN REPLACEMENT
2016 -2017
PROJECT NO. C66401626
LOCATION MAP
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Attachment 2
Date: MARCH 20, 2017
City of Petaluma
Public Works and Utilities
Department
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