HomeMy WebLinkAboutStaff Report 3.C 02/26/2018DATE: February 26, 2018
Agenda Item #3.0
TO: Honorable Mayor and Members of the City Council through City Manager
FROM: Dan St. John, F.ASCE — Director, Public Works & Utilities
Sanjay Misbra, P.E. — Deputy Director, Public Works & Utilities
SUBJECT: Resolution Accepting Completion of Petaluma Boulevard South Sewer Trunk
Main Replacement Project, City Project No. C66401314.
RECOMMENDATION
It is recommended that the City Council approve the Resolution Accepting Completion of
Petaluma Boulevard South Sewer Trunk Main Replacement Project, City Project No.
C66401314.
BACKGROUND
The subject project was identified as a priority in the City Sewer Master Plan completed over a
decade ago and has been in planning and design for several years. The project was delayed to
allow Pacific Gas & Electric to replace the gas transmission main and allow the City to complete
a more critical sewer improvement on Weller and D Streets. During the large storm in December
2014, the City experienced a high number of sanitary sewer overflows (SSOs) along Petaluma
Boulevard South and some adjacent streets. The SSOs are due to the lack of capacity within the
sanitary sewer system when high amounts of infiltration and inflow occur. The project replaced a
section of older sewer with numerous pipe defects that were identified through a routine video
inspection of the pipe interior. The project limits are as shown in Attachment 2.
Bids were opened on March 2, 2017. On April 3, 2017, the City Council authorized the award of
the construction contract for Petaluma Boulevard South Sewer Trunk Main Replacement Project
to Team Ghilotti, Inc. of Petaluma in the amount of $2,206,985. Construction began in May 2017
and was completed in October 2017.
DISCUSSION
The Petaluma Boulevard South Sewer Trunk Main Replacement Project abandoned an existing
12 -inch sewer, and removed roughly 2,000 linear feet of 6 -inch and 18 -inch pipes, replacing
them with 8 -inch and 21 -inch pipes, respectively. The sewer manholes in the project area were
rehabilitated. All of the existing sewer laterals were replaced up to the back of the curb.
Ancillary work included replacement of sidewalk, curb and gutter, driveways, and curb ramps;
repaving of H Street between Petaluma Boulevard South and 2nd Street; and placement of traffic
cameras at intersections at I Street and Mountain View. This project improves reliability,
increases capacity, and reduces maintenance, inflow, and infiltration as demonstrated by the rain
events in November 2017 and January 2018.
The final contract amount is $1,914,937.96, which includes ten change orders (CCO) totaling
$188,804.71 for miscellaneous work tasks to address various unknown conditions that were
identified during construction, as well as adjustments to bid items from estimates to actual costs
in the field. Following is a summary of all change orders:
CCO 1 - $16,226.95
Unmarked utilities found during excavation.
CCO 2 - $18,996.15
Removal of contaminated soil as well as increasing the size of a manhole and the associated
piping for potential future upgrades.
CCO 3 - $19,444.42
Added costs associated with adding an extra manhole and piping that were not originally in the
plans.
CCO 4 - $14,224.60
Compensated for the loss of production for workers and equipment during a PG &E gas repair of
a 2 -inch unmarked gas line that was damaged during excavation.
CCO 5 - $20,817.60
Pave the full width of H- street between Petaluma Blvd. South and 2"d Street paving in lieu of
contract trench paving section for the sewer main and laterals. A credit of $18,530 was
negotiated and is included in the total amount of this change order.
CCO 6 - $9,242.63
Miscellaneous items
CCO 7 — $7,409.18
Extra potholing, a new manhole, and additional piping associated with a sewer lateral.
CCO 8 — $27,607.25
Additional paving of pothole locations and excavated areas not in the plans as well as some extra
grouting work in several manholes.
CCO 9 - $44,835.93
Installation of traffic cameras at the intersections of I St and Petaluma Boulevard South and
Mountain View Avenue and Petaluma Boulevard South.
CCO 10 - $10,000
Extra pavement cutting and removal due to unexpected pavement depth.
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The project was managed and inspected by Public Works and Utilities engineering staff with
assistance by an outside consultant for geotechnical and material testing. The proposed action
meets Council Goal: "Plan for and implement priority capital projects as funding permits ".
FINANCIAL IMPACTS
Council approved a project budget of $3,113,000 from the wastewater enterprise fund. Actual
project costs totaled $2,305,000 as summarized below, allowing the end -of -year wastewater
enterprise fund balance to be approximately $800,000 more favorable than projected in the
budget.
Uses
Approved
Project Budget
Actual Project
Budget
Planning/Environmental
$
100
$
100
Design
$
132,500
$
143,000
Legal Services
$
2,000
$
2,000
Administration
$
4,000
$
500
Construction Contracts
$
2,206,985
$
1,915,000
Construction Management
$
254,000
$
174,400
CIP Overhead
$
70,000
$
70,000
Project Contingency
$
443,415
TOTAL
$
3,113,000
$
2,305,000
Funding Sources
Waste Water Capital
1 $
3,113,000
1 $
2,305,000
TOTALI
$
3,113,000
1 $
2,305,000
ATTACHMENTS
1. Resolution
2. Location Map
Attachment 1
RESOLUTION ACCEPTING COMPLETION OF
PETALUMA BOULEVARD SOUTH SEWER TRUNK MAIN REPLACEMENT
PROJECT, CITY PROJECT NO. C66401314.
WHEREAS, in accordance with Section 68 of Article X of the City of Petaluma Charter
and Municipal Code, California Public Contract Code Section 20162 and other applicable law,
City staff prepared construction bid documents and solicited bids for the project (Project); and
WHEREAS, the Project was bid on March 2, 2017, and six bids were received and
opened on April 3, 2017 in accordance with applicable law; and
WHEREAS, the lowest responsible bid for the Project was submitted by Team Ghilotti,
Inc. from Petaluma, CA for $2,206,985; and
WHEREAS, by Resolution No. 2017 -053, adopted on April 3, 2017, the City Council
found the bid of $2,206,985 for the Project to be the lowest responsive bid; awarded the Project
to Team Ghilotti, Inc. in the amount of $2,206,985 conditioned on Team Ghilotti, Inc.'s timely
execution of the Project contract and submittal of all required documents, and authorized and
directed the City Manager to sign the Project contract on behalf of the City; and
WHEREAS, the following contract change orders (CCO) affecting the project amount
have been approved:
Change Order Number
Description
Amount
CC0#1
Unmarked Utilities etc.
$ 16,226.95
CCO #2
Design Changes and Misc. T &M
$ 18,996.15
CCO #3
Design Changes and Misc. T &M
$ 19,444.42
CCO #4
Damaged Gas Line
$ 14,224.60
CCO #5
H- Street Paving
$ 20,817.60
CCO #6
Misc. T &M
$ 9,242.63
CCO #7
Design Changes and Misc. T &M
$ 7,409.18
CCO #8
Design Changes and Misc. T &M
$ 27,607.25
CCO #9
Design Changes and Misc. T &M
$ 44,835.93
CCO #10
Misc. T &M
$ 10,000.00
Total Change Orders
$188,804.71
; and
WHEREAS, the final contract amount, as amended, including all change orders,
overruns, and underruns is $1,914,937.96 and is within the approved project budget; and
E]
WHEREAS, City staff have inspected the project and determined that it has been
completed in accordance with the contract requirements, and 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.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Petaluma as
follows:
The contract titled Petaluma Boulevard South Sewer Trunk Main Replacement
Project, with the final contract amount of $1,914,937.96, 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 10 days of the
date of this Resolution.
3. The Public Works and Utilities Director is hereby authorized and directed to release
all undisputed retention not subject to pending change orders within 60 days of the
date of this Resolution and in accordance with the terms of the Project contract,
California Public Contract Code Section 7107 and applicable law.
5
PP
I
Attachment 2
PETALUMA BLVD SOUTH SEWER TRUNK MAIN
REPLACEMENT
/
4v
PROJECT NO. C66401314
0
LAKEVILLE ST.
P ROJ CTS LAKEVILLE HIGHWAY