11-0301_PETERSON-CHASE GEN ENG CONST., INC_Agenda Report_D15 1111312012
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City of San Juan Capistrano
Agenda Report
TO: Karen P. B ust, City Manager
FROM: Jam Ross, Interim Public Works Director
Pr are by: Nisha A. Patel, P.E., Associate Engin
DATE., ove ber 13, 2012 "
SUBJECT: C sideration of a Change Order to the Construction Contract for the Del
Obispo Street Widening from Alipaz Street to Paseo Adelanto Project
(Peterson-Chase General Engineering Construction, Inc.)
RECOMMENDATION.-
By
ECOMMENDATION:By motion, approve a change order in the amount $57,750.00 with a 10% contingency
for a total of $63,525.00 to the Construction Contract with Peterson-Chase Engineering
Construction, Inc. for the Del Obispo Street Widening from Alipaz Street to Paseo
Adelanto Project for the Trabuco Creek Bridge Approach Repair Improvements.
EXECUTIVE SUMMARY:
Peterson-Chase General Engineering Construction, Inc.. (Peterson-Chase) is currently
constructing the Del Obispo Street Widening from Alipaz Street to Paseo Adelanto
project. The project widens the. existing bridge over Trabuco Creek at Del Obispo Street
by 24 feet.
The existing bridge built in 1946, which is just north of the current bridge widening, has
been eroding under the bridge cantilever end where it joins with the pavement. The
Trabuco Creek Bridge Approach Repair Project, a separately budgeted project,
addresses the erosion issues by installing concrete slurry beyond the bridge end
cantilever under the pavement, lining the sloped area under the cantilever end with
shotcrete, and excavating and backfilling the bridge adjacent pavement area with a new
roadway section. This is the optimum time to construct the approach repair project. The
City still has permits in place with the environmental agencies and the County of Orange
Flood Control. The current bridge widening project has a water diversion in the creek.
Also, it would be beneficial to construct the approach repair project before the rainy
season. Peterson-Chase is currently still working on the Del Obispo Street Widening
City Council Agenda Repurt
November 13, 2012
Page 2 of 3
from Alipaz Street to Paseo Adelanto project, and they are familiar with the work area.
Peterson-Chase can construct the approach repair project in mid-November.
Therefore, staff requests a change order for a total of $63,525.00 ($57,750.00 with a
10% contingency) to the Construction Contract with Peterson--Chase for the Del Obispo
Street Widening from Alipaz Street to Paseo Adelanto Project (CIP 07107) for the
Trabuco Creek Bridge Approach Repair Improvements (CIP 09105).
DISCUSS]ON/ANALYSIS-
On March 1, 2011, the City Council awarded a contract to Peterson-Chase General
Engineering Construction, Inc. in the amount of $3,453,842.46 to construct the Del
Obispo Street Widening from Alipaz Street to Paseo Adelanto project (CIP 07107). The
project involves 24 feet of bridge construction, channel improvements, traffic signal and
striping, and utility construction.
Plans for the Trabuco Creek Bridge Approach Repair Project were originally developed
by AKM Consulting Engineers in 2001 to address the slope erosion under the cantilever
ends of the existing bridge section built in 1946. They proposed closure walls between
the column bents and the side wall. The enclosed space was to be backfilled with
pervious material. The walls were required to be drilled and dowelled to the existing
structure which would have modified the behavior of the original structure. It would have
also been difficult or impossible to backfill the enclosed areas as indicated on the plans.
RBF Consulting recently reviewed the previously designed plans and the current site
condition. They proposed lining the sloped area under the cantilever ends with
shotcrete, installing concrete slurry beyond the bridge end cantilever under the
pavement, and excavating and backfilling the bridge adjacent area with a new roadway
section. The cost estimate received from Peterson-Chase for the construction is
$57,750.00. With a 10% contingency, the additional contract amount issued to them
would be $63,525.00.
FISCAL IMPACT:
The Trabuco Creek Bridge Approach Repair Project (CIP 07109) currently has
$100,000.00 of funds available in the Fiscal Year 2012-2013 Budget, carried over from
the prior year. This project is funded from the Capistrano Circulation Fee Program
(CCFP) funds for construction of these improvements,
ENVIRONMENTAL IMPACT:
The proposed work is within the scope and has similar impacts as the original bridge
widening project for which the City prepared a MND (Mitigated Negative Declaration).
Potential impacts of this minor change to the scope of work will be addressed by the
mitigation measures in the MND.
City Council Agenda Repurt
November 13, 2012
Page 3 of 3
PRIOR CITY COUNCIL REVIEW:
On March 1, 2011, the City Council awarded a Construction Contract to Peterson-
Chase in the amount of $3,453,842.46 to construct the Del Obispo Street Widening
from Alipaz Street to Paseo Adelanto project (CIP 07107).
COMM ISSIONICOMMITTEEIBOARD REVIEW AND RECOMMENDATIONS:
Not applicable.
NOTIFICATION:
Dick Vogels, Peterson-Chase General Engineering Construction, Inc.
ATTACHMENT(S):
Attachment 1 — Contract Change Order
Exhibit A-- Photos of Existing Situation
Exhibit B -- Sketch of Existing Situation
Exhibit C — Sketch of Proposed Work
Exhibit D — Contractor Bid Proposal
STATE OF CALIFORNIA•DEPARTMENT OF TRANSPORTATION
CONTRACT CHANGE ORDER Sheet - 1 of _. .
CEM-4900(REV 0512001)CT#7549-3501-0 Change Requested by: Xengineer contractor
--- __ ...............
CCO NUMi3ER SUPPL.NUMBER CONTRACT NUrNBER ROAD IFE[7 RAL NUMBER(S)
1-non-part, ACIP 07107 113el Obispo St Bridge Widening !non-pail icipating work
To
Peterson-Chase General Engineering Construction,Inc„Irvine, CA contractor
You are directed to make the foflo wing changes from the pians and specifications or do the following described work not included in the
plans and specifications for this contract. NOTE. This change order is not effective until approved by the engineer.
Description of work to be done,estimate of quantities and prices to be paid. (Segregate between additional work at contract price,
agreed price and force account.) Unless otherwise stated, rates for rental of equipment cover only such time as equipment is actually
used and no allowance will be made for idle time. The last percentage shown is the net accumulated increase or decrease from the
original quantity in the engineers estimate.
The work will repair the erosion under the cantilever ends of the existing bridge section constructed in 1946,It will also construct a
treatment to the slope lining between the column bents and the side wall.The existing conditions are depicted in the photos and
sketch in Exhibits A and B, The proposed work is as detailed in the attached sketch (Exhibit C).It involves lining the sloped area
under the cantilever ends with shoterete, installing concrete slung beyond the bridge end cantilever under the pavement,and
excavating and backfilling the bridge adjacent area with a new roadway section.The total cost of the work is$57,750 as detailed in
the contractor proposal(Exhibit p). With a 10%contingency added in,the total contract change is$63,525.00.
Estimated Cost: ® Increase F Decrease $63,525.00
By reason of this order the time of completion will be adjusted as follows:
SUBMITTED BY
SfGNATURE (PRINT NAME&TITLE) DATE
James Prather, Construction Inspector,Assistant RE ((
APPROVAL RECOMMENDED BY
SIGNATURE (PRINT NAME&TITLE) DATE
James Prather, Construction Inspector,Assistant RE
ENGINEER APPROVAL BY
SIGNATURE !(PRINT NAME&TITLE) DATE
Nisha A. Patel,PE,Associate Engineer, RI
We the undersigned contractor,have given careful consideration to the change proposed and agree, if this proposal is approved, that
we will provide all equipment, furnish the materials, except as may otherwise be noted above,and perform all services necessary for
the work above specified, and will accept as full payment therefor the prices shown above. NOTE: If you,the contractor,do not
sign acceptance of this order,your attention is directed to the requirements of the specification as to proceeding with the
ordered work and filing a written protest within the time therein specified.
CONTRACTOR ACCEPTANCE BY
(PRINT NAME&TITLE) JDATE
I
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ADA Notice write Records and Forms Management,1120 N Street,MS-89,Sacramento,CA 95814.
ATTACHMENT 1
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PETERSON-CHASE
GENERAL ENGINEERING CONSTRUCTION,INC
1792 KAISER AVE.,IRVINE,CA 92614
PH#(949)252-0441 FAM(949)252-0266
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TO: City of San Juan Capistrano FROM: Dick W.Vogels
Public Works
32400 Paseo Adelanto DATE: September 25,2012
San Juan Capistrano CA 92675
ATTN: NISHA PATEL
SUBJECT: Revised Pricing for Slope Paving and
Bridge Approach Structural Section :;a
Replacement-1945 Del Obispo Bridge
JOB#: 642 CONTRACT#: C 07107 `
PH#:443-6350 FAX#: PH#: (949)252-0441 FAX#: (949)252-0266
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Nisha, 5 '
The following is our proposal to perform the installation of slope paving under the 1945 portion of the
original Def Obispo Bridge, and to excavate the bridge approach and departure structural section, and
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compact new base!asphalt at the old 1945 bridge section as per attached details:
Slope Paying:
Grade!Pour Slope Paving both abutments 18 CY) Lump Sum $ 14,250.00
Replace Structural Section at Bridge Approaches:
Roadway excavation , cement slurry, asphalt paving per attached detail Lump Sum $ 39,000.00 x
E Traffic Control:
Perform traffic control for above operations: Lump Sum $ 4,500.00
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Grant! Total: Lump Sura 57 750.00
We request deferred time to perform this work. Exclude restoration of striping, loop detectors, relocation of
utilities.
Please call if questions arise.
Sincere[
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EXHIBIT D