HomeMy WebLinkAboutC22870 CA3 Soundwall on NB Portola AvenueREQUEST:
SUBMITTED BY:
APPLICANT:
DATE:
CONTENTS:
Recommendation:
CITY OF PALM DESERT
PUBLIC WORKS DEPARTMENT
STAFF REPORT
Approve Amendment No. 3 to Contract No. C22870 with Moffatt &
Nichol to Design Soundwall on Northbound Portola Avenue Between
Magnesia Falls Drive and the Portola Bridge
Mark Greenwood, P.E., Director of Public Works
Moffatt & Nichol Engineers
220 Commerce, Suite 250
Irvine, CA 92602
February 22, 2007
Contract Amendment No. 3
Fee Proposal
Vicinity Map
By minute motion, approve:
1. Amendment No. 3 to Contract No. C22870 with Moffatt & Nichol in the
amount of $32,915.00 for the design of a soundwall on northbound
Portola Avenue between Magnesia Falls Drive and the Portola Bridge
(adjacent to Wedgwood Glen Community), and
2. The appropriation of $32,915.00 for this amendment from unobligated
funds in Account 400.
Background:
On October 4, 2004, City Council approved Contract No. C22870 with Moffatt & Nichol for
design and construction support services in the amount of $563,467.00, plus a 10%
contingency for the Portola Bridge over the Whitewater Channel Project. On July 14, 2005,
City Council approved Amendment 1 to Contract No. C22870 in the amount of $50,751.00
for additional services to address unforeseen design requirements. City Council on August
24, 2006, also approved Amendment 2 to Contract No. C22870 in the amount of
$48,500.00 for additional construction design support services to address unforeseen
requests for information, previous change orders, and the girder failure that occurred.
On July 31, 2006, the east half was completed and traffic was moved to that portion of the
bridge. Construction of the entire bridge is scheduled to be complete in June 2007.
Discussion:
The original environmental document included noise readings in this area that exceeded the
City's noise standards for single-family residences. The environmental document
concluded that the elimination of the steep grade would cause Tess gearing and revving
noise and that the overlay of rubberized asphalt paving on the roadway would minimize
traffic noise. Therefore, a soundwall was not included in the project.
Amendment 3 to C22870 with Moffatt & Nichol-Portola Bridge over Whitewater
Page 2of2
February 22, 2007
After construction began, staff received traffic noise complaints from the residents of the
Wedgwood Glen Association on the east side of Portola Avenue between Magnesia Falls
Drive and the Portola Bridge. The residents complained that the trees which were removed
for construction had provided them with a sound buffer and that the raised roadway created
a visual impact upon their properties. Staff subsequently obtained a more thorough noise
study that did recommend a soundwall be provided at this location.
The recommended 10-foot-high soundwall would be constructed on Wedgwood Glen
property along the approximate same alignment as the existing property wall, and will
mitigate both the traffic noise and the visual impact. It is necessary to expedite the design
so that a change order can be issued to Granite Construction to build the soundwall and do
the replacement planting as part of the bridge project. The estimated soundwall
construction cost is approximately $400,000.00. The construction change order will be
presented to City Council for approval after design is completed and the cost is negotiated
with Granite. If we are unable to negotiate this change with Granite, the soundwall and
landscaping would need to be done as a separate project. A right-of-way agreement with
Wedgwood Glen Association will also be required that would include reimbursement for the
landscaping within their property removed for soundwall construction.
Staff has determined that the negotiated costs for the additional design services are
equitable. Therefore, staff recommends that City Council approve Amendment 3 to
Contract C22870 with Moffatt & Nichol in the amount of $32,915.00 and authorize the
Mayor to execute the amendment. Amendment 3 also includes revising the landscaping
plans at the soundwall location and changes in planting of the areas adjacent to the
Chaparral Country Club and the CVWD property. The revised total contract amount of
$695,633.00 is approximately 6.9% of the construction cost, which is well within the
acceptable range.
This unforeseen expenditure was not budgeted. Therefore, staff also requests approval of
the appropriation of $32,915.00 from unobligated funds in Account 4'0 for this expenditure.
Joho/A. Garcia" P.E.
Engineering Manager
Approval:
Homer Croy
ACM for Development Services
Carlos Orte
City Manager
Depart
d:
Mark Green ood, P.E.
Director of Public Works
Paul Gibson
Finance Director
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CITY OF PALM DESERT Contract#/P O # c228�o 11866
Amendment No. 3
PROFESSIONAL SERVICE AMENDMENT Contingency YES N
Contract Purpose Portola Bridge Over Whitewater Channel Design Account No. 400-4359-433- 1
Consultant's Name Moffatt& Nichol Project No. 647-04
Add�ess: 220 Commerce, Suite 250 vendor No. 1101
Irvine, CA 92606
You are hereby requested to comply with the following changes to the contract:
DECREASE INCREASE
DESCRIPTION OF CHANGES In Contract Price In Contract Price
1. Design soundwall and revise landscaping plans on northbound Portola $27,915.00
Avenue between Magnesia Falls Dr. and Portola Bridge.
2. Revise existing landscaping plans for changes in planting of the areas $5,000.00
adjacent to the Chaparral Country Club and CVWD property and for design
construction support services for soundwall.
TOTALS: - $32,915.00
NET CHANGE IN CONTRACT PRICE: $32,915.00
JUSTIFICATION:
1. The new soundwall and landscaping revisions are necessary to mitigate traffic noise and visual impacts to the
adjacent Wedgwood Glen Community. 2. The landscaping plans also need to be revised for changes in planting
adjacent to the Chaparral Country Club and CVWD property. Additional minor design construction support services
are also required for new soundwall.
TOTAL BUDGET FOR PROJECT: + $12,642,904.00 CONTINGENCY:
Less: Expend. & Encumb. To Date: - $12,642,904.00 Amount Approved by Council: + $56,346.70
Less: This Change Order Amount: - $32,915.00 Less: Prior Change Order(s): - $56,346.70
BALANCE OF BUDGET ($32,915.00) Less: This Change Order: - $0.00
REMAINING FOR PROJECT: Balance Remainin of Contin enc : $ -
The amount of the Contract will be increased by the Sum of: Thirty-Two Thousand, Nine Hundred and Fifteen
Dollars ($32,915.00).
W\Agenda Items\2007-Feb 22\Moffatt Nichol Amendment No 3 Portola Bridge 647-04�P,mendment 3 to C22870 Moffatt Nichol 647-04 doc Continued on reverse ...
Contract C22870 Amendment No. 3 Continued from front
This Professional Service Amendment covers changes to the subject contract as described herein. The Consultant
shall perform all work as necessary or required to complete the Professional Service Amendment items for a not-to-
exceed price agreed upon between the Consultant and the City of Palm Desert, otherwise referred to as Owner.
Contract Time Extension: None Days.
Revised Contract Total $695,633.00.
The undersigned Consultant approves the foregoing Professional Service Amendment# 3 as to the changes, if any, in
the contract price specified for each item including any and all supervision costs and other miscellaneous costs
relating to the change in work, and as to the extension of time allowed, if any, for completion of the entire work on
account of said Professional Service Amendment # 3. The Consultant agrees to furnish all labor and materials and
perform all other necessary work, inclusive of that directly or indirectly related to the approved time extension, required
to complete the Professional Service Amendment items. This document will become a supplement of the contract and
all provisions will apply hereto. It is understood that the Professional Service Amendment shall be effective when
approved by the Owner.
Execution of this Professional Service Amendment by the Consultant constitutes a binding accord and satisfaction that
fully satisfies, waives, and releases the Owner from all claims, demands, costs, and liabilities, in contract, law or
equity, arising out of or related to the subject of the Professional Service Amendment, whether known or unknown,
including but not limited to direct and indirect costs and/or damages for delay, disruption, acceleration, and loss of
productivity, as well as any and all consequential damages.
This document will become a supplement to the Contract and all provisions will apply hereto, all items included above
must have required signatures as per the purchase resolution.
1. REQUESTED BY: 2. ACCEPTED BY:
DEPARTMENT HEAD CONSULTANT Date Accepted
3. CERTIFIED
FUNDS AVAILABLE: 4. APPROVED BY:
FINANCE DIRECTOR RICHARD S. KELLY, MAYOR Date Approved
NOTE: No payments will be made prior
to City Manager and Council approval CITY MANAGER Date Approved
W\Agenda Items\2007-Feb 22\Moffatt Nichol Amendment No 3 Portola Bridge 647-04�P,mendment 3 to C22870 Moffatt Nichol 647-04 doc Continued on reverse ...
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Crty �f Palm Ly�sert
73-510� l�recl �r�.t-ir�g Driiv�
Pal�n Des�a�t, C���ifaz���i� 922�6Q
Att�ti: JoIu1 Ciat��;ia
Subj: Portola �.venL�e ���id�e o�re��tl�e V�JlittcEv�ter R�ver Channe�
M&1�1 ril'e: 553?\�'�'n-2�L
Dear John:
Bel.�ati� is ow-propasal to develop FS&E far a new souildwall and �o irrcorporlte �-evisions
tn th� landscapi��g�nd irrigation desi�l for�he above referencec�project.
TA.SI� 1: NEW SOIJI�1DtiVALL ALONG EAST S1DE OI' Pt�RT��,A A`JEN�E
BETWEEN IVIAGNESI�FA�,LS DL�I�TE AND WHITE�'VAT�R R.I�'�R _
Tliis worlc inclbides tl�e c�evelo�n�ent of canstruction plans for a ne��r soundwaIi and
�andsc�.pin�/iniga.tioi� plans f�,r replacement plat�ting in tllis region to�etl�er ti�ith relatec�
construction sup��oz-t services.
It i� our und�rsta��ding t�1at construction of tllese iteins will be accomplished as a change
orde�-to tlle c�irrent consti-i.�ction contract.
l.l Soundwall Acoustics Study.................,..,.....................$6,840
1.� Prelimi���iy Soui�dwall LayoL�t.....................................$3,575
�.3 C�.tT�pl�te So����dwall PS&E.......................................$13,000
�.4 Geotecl�nical Foundation Review ................................$2,000
1.5 �.andscapill�/I�ri�ation Plans........................................�1,250
1.6 R�lated Consttliction Slippoi-t Ser-�rice5........................�1,250
TOTAL TASI� 1 �27,915
Our�ffoz-�s will lie invoiced on a#ime arld mater�al basis not tu e�ceed the indicated fee.
TA�K 2: �EVISI+ONS TO PRaJECT LANI?SCAPING A1_'�1D IRRIGA�'I�N
T��is w�or�: i�lclu�ies tl�e rev�sion of c�.in•ellt �anc�sca�ing and ir-i-igation ��lans to accomplish
the followiil�; (1) Revisioi�s at Quicksilver iiltersection to inldicate la��dscaping in this
�..
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r Ivli. Jol1i1 G��ci�
i_____ �ity o�pa�i�l Desert
Pa�� 2
re�;�on is "l�y ��h�ts'', �2) Rev�sians (anc� n��tT ��I�r�s) ��lon.� �est s�cie o�fi I'o�tc�Ta Ave����e �
l�et�«r�er� �GTi�ut��u���c��� �.iv��a• and C�u.i�ksi��f�r I�iiv� �o l���vir�e fou�� r����l�c�en���i�t �1.���ti��tz��
b��onc� tl�e ��ioject gr��dirti� linli�s, E�.nd (3j� Revis�vov�� �lan�� th� ��r�s� side� e�f 'Partola
A��enue `vitlyi�7 CVt�D R./Vt�sotttll ot�1Jll�te���•ater�i�rer to del�fie pl��.r�ts��d ii-��`ati�n� �,�1d
ex�a��d rac.kscape. I� �s ot�r ti�rlderstai��ifl� th��t cc��lst���uct�on ef��rts «il� ve incorpa�•ated
i�1 �chan�e ard�i-ta �l�e cut��ni const�-��ction col�tr�ct.
2.1 Plan�i��� a�lc� �i�rigatia�i Platl�.. ..................................��,630
2.2 Rel��ed �ailstilzcti_QL� Suppa�-t S�rvices...................... .�2,37Q
Z'QTAL TASK.2 �5,(}C�0
TlZese e�forts ��vill i�i� iitvoicec� o�z � tir�le aild tilat.crial basis i�ot to exc�ed the indiea�e�D
r-��.
If y�ou I1�V� (�U�'S110t1S CC��1C�I'L11I1� �I1TS �7t•o�la�s�l or n�e� �.ddrtio��a] el�,rif�;�tion, ��ease
call.
ve�y tr-uly yours,
MQFFATT & N�CHOL
f e�'`'�`� t. _ _
Alle�i Ely
Project Mailager
ALE/nlsw
Enclosures
cc: Ai-un Jain
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PROJECT LOCATION - PORTOLA AVENUE 0 87.5 175 350 525 �oo
CROSSING AT WHITEWATER CHANNEL Feet