HomeMy WebLinkAbout7-Consideration of Final Completion of the District Pipeline Replacement – 2013 ProjectAgenda Item # 7
CONSENT
To: Board of Directors
From: Neil Kaufman
Date: October 16, 2013
Subject: Consideration of Final Completion of the District Pipeline
Replacement — 2013 Project
1. WHY THIS MATTER IS BEFORE THE BOARD
The District Pipeline Replacement - 2013 project is complete. A resolution
accepting the project as complete requires Board approval.
2. HISTORY
In April 2013, the Board awarded the construction contract for the District Pipeline
Replacement - 2013 project to A&K Earthmovers Sparks, Nevada. The project
involved replacement of about 2,300 feet of pipeline at five locations in the Tahoe
Donner area. A&K began work in late May and completed the construction at the end
of August.
The original bid price was $489,714.22. At the time of award, the Board also
established a 10 percent change order allowance for a total for a total authorization not
to exceed $538,700.00.
In August 2013, a progress report was presented to the Board. It was also identified
that the original change order allowance would likely be exceeded due to issues
associated with subsurface water on two of the pipeline segments. In response, the
change order allowance was increased from $48,985.78 to $75,000.
3. NEW INFORMATION
During the course of the project, 21 change order requests were reviewed by staff and
then approved by the General Manager. These change orders totaled $51,769.34 and
did not exceed the $75,000 change order allowance established by the Board of
Directors. The items generally fell under the following categories:
• Additional Work Not Included in the Original Contract: During the course of
the project, it was necessary to perform some additional work that was not
covered by the original bid items such as removal of a tree and installation of
some fire hydrant extensions. These items totaled $8,824.92.
Repair of Water Leaks: The old pipelines required repair at three locations to
control water such that the new pipeline construction could be performed. The
additional time and materials associated with repairing these water leaks is
$8,708.26.
Field Conditions Differing from the Contract Drawings: The pipeline design
along Northwoods Boulevard at Viking Way assumed that the existing sewer
laterals were deep enough to allow the new water pipe to be routed above the
laterals. However, it was determined that there was insufficient clearance
between the existing water and sewer laterals and it was necessary to route the
new pipe under the sewer laterals. This results in a deeper trench requiring
more excavation and backfill. The costs associated with this work total
$10,820.53.
• Subsurface Water: Significant volumes of subsurface water were encountered
on two of the pipeline segments (Northwoods Boulevard at Norse Avenue &
Northwoods Boulevard at above Chamonix Road). This amount of water
required changes in backfill materials, equipment and construction methods.
The costs total $23,415.63.
In addition, there are two items that result in a credit to the District:
Reconciliation of Bid Quantities vs. Actual Constructed Quantities: The
contract is based on a unit price bid. Attachment 1 shows the differences
between bid totals and the amounts actually constructed. This analysis results
in a $19,945.00 credit to the District.
• TSD repair of broken sewer lateral: A sewer lateral on Davos Drive near
Heidi Way has broken during the pipeline construction. This break caused a
backup in the lateral that overflowed out the property line cleanout. Upon
discovery of the problem, TSD was notified and TSD crews responded to the
site. Cleanup of the overflow and repair of the broken lateral was performed by
TSD with assistance from A&K Earthmovers. TSD send the District and invoice
for $2,852.02 for this work. The District paid TSD directly and the District is due
reimbursement from A&K for this cost.
In early September, District staff performed a final walkthrough on the project. The
work performed is considered complete and should be accepted by the District.
Attached is a draft resolution (Attachment 2) accepting the project and directing that a
Notice of Completion be filed.
4. FISCAL IMPACT
The original bid price was $489,714.22. Once adjustments are made for the items
described above, the final contract price is $518,686.54.
5. RECOMMENDATION
Adopt a resolution accepting the District Pipeline Replacement - 2013 project as
complete and authorize the filing of the Notice of Completion.
Michael D. Holley
General Manager / Water Utility Manager