HomeMy WebLinkAbout23A - PROJ - BROADWAY WATER MAINREQUEST FOR
COUNCIL ACTION
CITY COUNCIL MEETING DATE:
APRIL 15, 2014
TITLE:
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CONTINGENCY INCREASE FOR
BROADWAY REHABILITATION AND
WATER MAIN IMPROVEMENTS FROM
CIVIC CENTER DRIVE TO SANTA CLARA
AVENUE {PROJECTS 116743 & 1164151
CITY MANAGER
RECOMMENDED ACTION
CLERK OF COUNCIL USE ONLY:
❑ As Recommended
❑ As Amended
❑ Ordinance on 1" Reading
❑ Ordinance on 2o0 Reading
❑ Implementing Resolution
❑ Set Public Hearing For®
CONTINUED TO
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Increase the contract contingency for the Broadway Rehabilitation and Water Main
Improvements Project by $650,000, which increases the Christensen Brothers General
Engineering, Inc., construction contract to a maximum of $5,383,144.65.
2. Authorize the City Manager to execute change orders in an amount not to exceed the total
authorized contract.
DISCUSSION
The recommended action will allow the City to cover cost extras anticipated on Broadway north of
171h Street similar to those conditions encountered south of 17th Street. These cost extras are
related to underground and pavement conditions on Broadway that were unforeseen.
The Broadway Rehabilitation Project consists of upgrades and /or replacement of underground utilities,
including the city's water main and water services, followed by street improvements including
replacement of curb and gutter, removal and replacement of damaged sidewalks and curb ramps, and
reconstruction of the pavement. The work limits on Broadway are between Civic Center Drive and
Santa Clara Avenue.
On August 5, 2013, the City Council awarded a contract to Christensen Brothers General
Engineering, Inc., in the total amount of $4,733,144.65, which included a 10 percent contingency.
While potholing the existing utilities in advance of installing the new water main along Broadway,
unforeseen concrete pavement was encountered beneath the street, despite coring logs that
showed cement treated base at certain locations. Staff also discovered that a sewer trench
constructed in the late 1960's was not properly compacted, causing significant voids under the
concrete pavement. Consequently, these unforeseen conditions resulted in necessary redesign
and additional quantities of asphalt to pave the street.
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Contingency Increase
Broadway Rehabilitation Project
April 15, 2014
Page 2
The underground work on Broadway south of 17th Street is nearly completed, and the pavement
conditions have been fully revealed. Staff is anticipating similar conditions north of 17th Street and
staff therefore recommends making financial preparations to accommodate cost extras without
delaying the construction activities. This is critical now that the project is in the second half of the
construction phase.
ENVIRONMENTAL IMPACT
There is no environmental impact associated with this action.
FISCAL IMPACT
Funding for the increased construction contingency of $650,000 for the Broadway Rehabilitation
and Water Main Improvements Project is available as follows:
• $200,000 - Traffic Congestion Relief HUT Fund (Account 05917663 - 66220)
$450,000 - Water Utility Capital Projects Fund (Account 06617647 - 66301).
The Revised Cost Analysis (Exhibit 1) has been adjusted to reflect the total estimated project
delivery cost of $5,813,430.65.
APPROVED AS TO FUNDS AND ACCOUNTS:
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Edwin "William" G [Vez, P.E. Francisco Gutierrez
Interim Executive Director Executive Director
Public Works Agency Finance & Management Services Agency
EWG /tc
Exhibit: 1. Revised Cost Analysis
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REVISED COST ANALYSIS
PROJECT NOS. 116743 AND 116415
CONTRACT AWARD FOR BROADWAY REHABILITATION AND BROADWAY
AND WASHINGTON AVENUE WATER MAIN IMPROVEMENTS
Construction Contract (base) $4,302,858.65
Contingency (Original 10 %) $430,286.00
Added Contingency (-15 %) Recommended $650,000.00
$5,383,144.65
Contract Administration $172,114.00
Inspection and Testing $129,086.00
Survey $129,086.00
TOTAL ESTIMATED PROJECT DELIVERY COSTS $5,813,430.65
Exhibit 1
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