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Title:
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Approval of Final Plans and Specifications and Authorization to Publish a Notice Inviting Bids for the Construction of Sewer Main Lining Rehabilitation Project (Phase III), P-906 and Lining of Abandoned Force Main on Braddock Drive Project, P-939.
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City of Culver City, California
Agenda Item Report
RECOMMENDATION:
Staff recommends that the City Council approve the final plans and specifications
and authorize the publication of a notice inviting bids for construction of the Sewer
Main Lining Rehabilitation Project (Phase III), P-906 and Lining of Abandoned Force
Main on Braddock Drive Project, P-939.
BACKGROUND:
Most of the sewer mains contained in this project are located along the rear property
line easements where they are difficult to access and maintain. These sewer lines
were constructed between the 1920’s and the 1940’s, and the video tape inspection
showed need for rehabilitation. Approximately 6.5 miles (out of the total 90 miles of
city sewer mains) are proposed to be rehabilitated on this sewer lining project. As
part of Project P-948, the existing abandoned 10 inch diameter force main on
Braddock Drive from the Braddock Sewer Pump Station to Overland Avenue that
was originally constructed in 1940’s, is proposed to be re-lined and to be re-
activated as a secondary discharge line in case the adjacent and current force main
is in need of repair. Trenchless construction technology is a new method to
rehabilitate sewer mains with minimum disruption to the public.
DISCUSSION:
After the study of the latest Closed Circuit Television (CCTV) inspection of the
existing sewer mains, it was determined that the subject sewer pipes have structural
Meeting Date: 04/02/2012 Item Number: C-3
CITY COUNCIL AGENDA ITEM: Approval of Final Plans and Specifications and
Authorization to Publish a Notice Inviting Bids for the Construction of Sewer Main
Lining Rehabilitation Project (Phase III), P-906 and Lining of Abandoned Force
Main on Braddock Drive Project, P-939
Contact Person/Dept.: Hong Wang/PW Phone Number: 310-253-5604
Fiscal Impact: Yes [X] No [] General Fund: Yes [] No [X]
Public Hearing: [] Action Item: [] Attachments: [X]
Commission Action Required: Yes [] No [X] Date: ________________
Public Notification: (E-Mail) Agenda and Meetings – City Council (03/30/12)
Department Approval:
Charles D. Herbertson (03/26/12)
City Attorney Approval:
Carol Schwab (by H. Baker) (03/28/12)
Chief Financial Officer Review:
Jeff Muir (by K. Marsden) (03/29/12)
City Manager Approval:
John M. Nachbar (03/29/12) City of Culver City, California
Agenda Item Report
integrity, but there is evidence of the need for rehabilitation. Therefore, the subject
sewer mains are scheduled to be rehabilitated with trenchless sewer reconstruction
technology. Instead of excavation and replacement of the existing sewer main, the
lining process provides for the insertion of a special lining material inside the existing
pipe and the liner is then heated or cured-in-place to the inside of the pipe. The new
liner creates a watertight, smooth surface within the existing sewer main pipe that is
structurally sound and long lasting.
In addition, based on review of the sewer videos, it is estimated that approximately
30% of the active sewer laterals studied have various degrees of root intrusion with
some of the roots extending into the City’s sewer main lines. As part of this project,
sewer laterals with root intrusion through damaged lateral connections to the sewer
main will receive a “top hat” trenchless lateral lining system at the main line
connection only. It is the homeowner’s responsibility to maintain their sewer lateral
from the building to City’s sewer main, per Culver City Municipal Code Section
5.02.007.
Engineering Division staff has completed the design and preparation of the plans
and specifications for the sewer rehabilitation projects. The IT Department’s GIS
staff prepared the construction plan sheets.
Phase II of this project will be bid together with this proposed Phase III project.
Phase II was approved for re-bid earlier this year.
FISCAL ANALYSIS:
As included in the City Council Adopted Budget for Fiscal Year 2011/2012, these
two projects are funded with t $7,243,981 of Sewer Enterprise Funds
ATTACHMENTS:
1. Location maps
MOTION:
That the City Council:
Approve the final plans and specifications and authorize publication of a notice
inviting bids for the construction of Sewer Main Lining Rehabilitation Project
(Phase III), P-906 & Lining of Abandoned 10" Force Main on Braddock Dr., P-
939.
MEETING DATE: 412112
AGENDA ITEM: Approval of Final Plans and Specifications and
Authorization to Advertise Bids for the construction of
Sewer Main Lining Rehabilitation Project (Phase III), P-
906 & Lining of Abandoned 10" Force Main on Braddock
Dr., P-984
ATTACHMENTS
Pages
1 Location Maps 1-3 S
NTS
SEWER MAIN LINING PROJECT, P-906 (PHASE III)
MAP 1 0F3 NTS
Legend
Culver City Boundary
SEWER MAIN LINING PROJECT, P-906 (PHASE III) &
P) LINING OF ABANDONED 10" FORCE MAIN ON BRADDOCK DR, P-984
MAP 2 OF 3 NTS
SEWER MAIN LINING PROJECT, P-906 (PHASE III)
MAP 3 OF 3