HomeMy WebLinkAboutItem 1a: Accept work performed by Downing Construction for the Water Main Replacement ProjectSTAFF RI -;PORT
Public Works Services Department
DATE: January 3, 2012
TO: Mayor and City Council
FROM: Tom Tait, Public Works Services Director
Prepared by: Ken Herman, Deputy Public Works Services Director
Mark Rynkiewicz, Associate Civil Engineer
SUBJECT: ACCEPT ALL WORK PERFORMED BY DOWNING CONSTRUCTION,
INC. FOR THE WATER MAIN REPLACEMENT PROJECT AS
COMPLETE AND AUTHORIZE THE FINAL PAYMENT TO BE MADE IN
ACCORDANCE WITH THE CONTRACT DOCUMENTS
Recommendation: Approve
SUMMARY
On May 17, 2011, the City Council awarded a contract to Downing Construction, Inc. in
the amount of $335,390 for the 2010 -11 Water Main Replacement Project. The terms
and conditions of this project have been complied with and the work has been
performed to staff's satisfaction for a total project cost of $343,203. This amount reflects
the original contract amount of $335,390 plus contract change orders for additional
work, totaling $7,813, or 2.33% of the original contract price.
Staff recommends that the City Council accept all work performed by Downing
Construction, Inc. as complete and authorize the final payment to be made in
accordance with the contract documents, subject to retention of $34,320.
DISCUSSION
The 6 -inch cast iron water mains along Santa Maria Road and Louise Avenue were
installed in the 1950's and City crews have frequently made emergency repairs to these
locations due to the age and material of the pipe.
The 2010 -11 Water Main Replacement project replaced the existing 6 -inch cast iron
pipes with 8 -inch ductile iron pipes which lessen the potential for future water main
breaks and improves water flow in the pipes. This improves the overall reliability of the
City's water system in the event of a catastrophic event. The project also replaced
under -sized fire hydrants and installed additional new fire hydrants to meet current fire
protection requirements
The final construction cost of the Project is $343,203. This amount reflects the original
contract amount of $335,390 plus contract change orders for additional work, totaling
Page 1 of 2
Mayor and City Council
January 3, 2012
$7,813, or 2.33% of the original contract price. A summary of the items included in the
change orders is as follows:
Change Order Description of Change or Work Amount
Additional asphalt work, cross gutter and spandrel,
1 and additional work due to unmarked utilities and $16,257.00
areas with thickened asphalt sections
2 Reduction in quantity of the installation of 2 -inch
long side services and 8 -inch ductile iron pipe ($8,444.00)
Total Change Order $7,813.00
The terms and conditions of this contract have been complied with and the work has
been performed to staff's satisfaction. Staff recommends that the City Council accept
all work performed by Downing Construction, Inc. as complete and authorize the final
payment to be made in accordance with the contract documents, subject to retention of
$34,320.
ENVIRONMENTAL ANALYSIS:
This project consists of the replacement and minor alteration of an existing utility system
with no expansion of the system and therefore qualifies as a Class 2 categorical
exemption per 15302 (c) of the California Environmental Quality Act.
FISCAL IMPACT:
Funds in the amount of $400,000 have been budgeted as part of the 2010 -11 Capital
Improvement Program for the Water Main Replacement Project.
RECOMMENDATION:
1. Accept all work performed by Downing Construction, Inc. for the Water
Main Replacement Project as complete.
2. Authorize final payment to be made in accordance with the contract
documents, subject to retention of $34,320.
TT:KH:mr
Attachment
Approved:
Page 2 of 2
Donald Penman, City Manager
WATER MAIN REPLACEMENT PROJECT AT VARIOUS STREETS
NORTH
CITY OF ARCADIA
LKINS
PROJECT LOCATION
SANTA MARIA RD.
ORANGE GROVE
OLORADO
HUNTINGItN
CAMINO REAL
TUNAS DR
PROJECT LOCATION
LOUISE AVE.
NORTH OF
RODELL PL.
LOCATION MAP
NOT TO SCALE