HomeMy WebLinkAboutItem 1c: Accept Work by MNR Construction for Water Main Replacement ProjectSTAFF REPORT
Public Works Services Department
DATE: October 20, 2009
TO: Mayor and City Council
FROM: Pat Malloy, Assistant City Manager /Public Works Services Director
Prepared by: Lubomir Tomaier, Principal Civil Engineer
Tiffany Lee, Assistant Civil Engineer
SUBJECT: ACCEPT ALL WORK PERFORMED BY MNR CONSTRUCTION, INC.
FOR THE 2008 -09 WATER MAIN REPLACEMENT PROJECT AS
COMPLETE AND AUTHORIZE THE FINAL PAYMENT TO BE MADE IN
ACCORDANCE WITH THE CONTRACT DOCUMENTS
Recommendation: Approve
SUMMARY
On April 7, 2009 the City Council awarded a contract to MNR Construction, Inc. in the
amount of $369,097 for the 2008 -09 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 $386,695.51. This amount reflects the
original contract amount of $369,097 plus contract change orders for additional and
deleted work, totaling $17,598.51, or 4.77% of the original contract price.
Staff recommends that the City Council accept all work performed by MNR
Construction, Inc. as complete and authorize the final payment to be made in
accordance with the contract documents, subject to retention of $38,669.55.
DISCUSSION
Many of the pipes in Arcadia's water distribution system were installed in the early
1900's and are small in diameter in comparison to modern standards in water
distribution systems. The existing four inch (4 cast iron water main along the north
side of Foothill Boulevard had reached the end of its service life. It was installed in
1936 and had reduced flow due to corrosion on the inside of the pipe. Replacement of
the pipeline was necessary to increase water flow in the distribution system.
The project was designed to abandon the existing four inch (4 water line and
reconnect all the services to the exiting twelve inch (12 cast iron water line along the
south side of Foothill Boulevard. This solution was more economical with less
interference to traffic on Foothill Boulevard.
Page 1 of 3
Mayor and City Council
October 20, 2009
The work also involved replacement and addition of several fire hydrants on Foothill
Boulevard to meet current fire protection requirements and the replacement of
inoperable water main line valves on Old Ranch Road.
On January 20, 2009, the City Council also authorized the addition of the Longden
Blending Pipeline Project to the Water Main Replacement Program and appropriated
$90,000 for design, inspection and construction of the project to correct high nitrate
concentration levels in the water pumped from the facility.
The final construction cost of the Project is $386,695.51. This amount reflects the
original contract amount of $369,097 plus contract change orders for additional and
deleted work, totaling $17,598.51, or 4.77% 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
1
Amount
$3,659.95
Relocation of fire hydrants $2,514.95
Additional work to expose the existing 8" cast iron
pipe at Old Ranch RD Foothill Blvd, which was $280.46
inside a corrugated metal sleeve
Installation of an additional 8 -inch gate valve at
Rodeo Rd. and Foothill Blvd
Additional work required to increase size of pipe
fittings to tie in to existing water main
Installation of several extra fittings for the 6 -inch fire
hydrant laterals
Installation of an extra fitting for the 8 -inch ductile
iron pipe (DIP) to avoid a storm drain pipe
Additional 6 -inch pipe and fittings required to
bypass unforeseen underground utilities
Additional 10 -inch pipe and fittings required to
bypass unforeseen underground utilities
Bore and jack additional 6 -inch DIP
Hach Nitrate Analyzer price difference (verification
of nitrate concentration level)
Elimination of two (2) installations of 2 -inch water
services
Total Change Order $17,598.51
Page 2 of 3
$900.00
$6,250.00
$1,500.00
$6,400.00
$3,328.00
$512.00
$1,853.15
($9,600.00)
Mayor and City Council
October 20, 2009
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 MNR Construction, Inc. as complete and authorize the final
payment to be made in accordance with the contract documents, subject to retention of
$38,669.55.
ENVIRONMENTAL IMPACT:
This project involves the replacement, operation and minor alteration of existing utility
systems and mechanical equipment therefore, it is categorically exempt per 15301(b),
of the California Environmental Quality Act. Per the California Department of Health
Services requirement a Notice of Exemption for the Longden Blending Pipeline has
been filed with the State Clearinghouse as a part of their approval process.
FISCAL IMPACT:
Funds in the amount of $570,000 have been budgeted as a part of the 2008 -09 Capital
Improvement Program, for the design, inspection, and construction of Water Main
Replacement Project. On January 20, 2009, the City Council allocated an additional
$90,000 to the project for the design, inspection and construction of the Longden
Blending Pipeline. The total cost of the project including construction, inspection,
material testing and change order is $386,695.51.
RECOMMENDATION:
1. Accept all work performed by MNR 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 $38,669.55.
PM:LT:TL
Attachment
Approved:
Page 3 of 3
oY,alsi)
Donald Penman, City Manager
WATER MAIN REPLACEMENT PROJECT AT VARIOUS STREETS
AC
HUNTI
51111A
MITA
PARK
TUNAS DR
LONGDEN
ELKIN
LIVE 0
CAMINO
PROJECT LOCATION
OLD RANCH ROAD
PROJECT LOCATION
LONGDEN FACILITY
GRAND VIE
DRE BL
NORTH
CITY OF ARCADIA
PROJECT LOCATION
FOOTHILL BLVD
FROM SAN CARLOS TO
SANTA ANITA
ORANGE GROVE
LOCATION MAP
NOT TO SCALE