HomeMy WebLinkAboutContract 52483-A3 CSC No.52483-A3
AMENDMENT No.3
TO CITY SECRETARY CONTRACT No. 52483
WHEREAS, the City of Fort Worth (CITY) and Halff Associates,
Inc. , (ENGINEER) , made and entered into City Secretary Contract No. 52483,
(the CONTRACT) , which was authorized by M&C No. C-29147 on the 11 day of
June, 2019 in the amount of $ 930, 000 . 00 (Nine hundred and Thirty
Thousand Dollars) ; and
WHEREAS, the CONTRACT involves engineering services for the
following project:
CentrePort Trail Phase I and Phase II Project; and
WHEREAS, it has become necessary to execute Amendment No. 3 to the
CONTRACT to include an increased scope of work and revised fee.
NOW THEREFORE, CITY and ENGINEER, acting herein by and through their
duly authorized representatives, enter into the following agreement,
which amends the CONTRACT:
1 .
Article I of the CONTRACT is amended to include the additional
engineering services specified in a scope of services proposal, a copy of
which is attached hereto and incorporated herein (Attachment A) . The
cost to City for the additional design services to be performed by
Engineer totals $35,945. 00 (see attached Funding Breakdown Sheet, page
3) . The amount in Amendment No.1 is $27,000. 00 and the amount in Amendment
No.2 is $37,000. 00.
2 .
Article II of the CONTRACT is amended to provide for an increase in
the fee to be paid to Engineer for all work and services performed under
the Contract, as amended, so that the total fee paid by the City for all
work and services shall be an amount of $1,029,945. 00.
3.
All other provisions of the Contract, which are not expressly
amended herein, shall remain in full force and effect.
OFFICIAL RECORD
City of Fort Worth
Professional Services Agreement Amendment Template CITY SECRETARY
CFW Official Release 9/19/2017
Page 1 of FT. WORTH, TX
EXECUTED and EFFECTIVE as of the date last written by a signatory,
below.
APPROVED:
City of Fort Worth ENGINEER
Halff Associates, Inc.
Y4'('&r4-LLA"�V� '-M" �
Valerie Washington(Dec 28,2 010:34 CST)
Valerie Washington Ovid Buchanan
Assistant City Manager Director of Landscape Architecture
DATE: Dec 28, 2020 DATE: December 15, 2020
APPROVAL RECOMMENDED:
,&hw-adZa1a14
Richard Zavala(Dec 17,202016:03 CST)
Richard Zavala
Director, Park & Recreation Department
DATE: Dec 17, 2020
Contract Compliance Manager:
By signing, I acknowledge that I am the person responsible for the
monitoring and administration of this contract, including ensuring all
performance and reporting requirements .
Jing Yang
Project Manager
APPROVED AS TO FORM AND LEGALITY:
M&C: N&C
Dec 23 2020
DBlack(Dec 23,202014:32CST) Date :
Douglas W. Black
Assistant City Attorney on
Ay FFooar 0
0
ATTEST: ��o �o�•1d
=d
0, o° d
Q�*o0 0. *�
aaa>z�nna0-0 p Dec 28, 2020
TFXA`�oa4a
Date:
Mary J. Kayser
City Secretary
City of Fort Worth OFFICIAL RECORD
Professional Services Agreement Amendment Template CITY SECRETARY
CFW Official Release 9/19/2017
Page 2of3 FT. WORTH, TX
FUNDING BREAKDOWN SHEET
AMENDMENT No. 1
TO CITY SECRETARY CONTRACT No. 52483
DEPARTMENT FUND-ACCOUNT-CENTER AMOUNT
PARD 31001-5330500-0800450-100082-5030 $35, 945. 00
City of Fort Worth
Professional Services Agreement Amendment Template
CFW Official Release 9/19/2017
Page 3 of 3
ONE 1201 North Bowser Road
MEN HALFF ATTACHMENT A Richardson,Texas
75081
(214)346-6200-6200
Fax(214)739-0095
ADDITIONAL SERVICES CONFIRMATION
To: Jing Yang Date: December 11, 2020
From: Laura Johnson AVO: 34838.001
Email: LJohnson@halff.com Project: CentrePort Trail - Phase I
VIA: email
The scope of services provided below are a continuation of the scope of services stated in the Standard Form of
Agreement dated July 2, 2019 between The City of Fort Worth (CLIENT)and Halff Associates(CONSULTANT)for
CentrePort Trail— Phase 1. The specific geotechnical services provided as part of this amendment are as follows:
Additional Services
PROJECT DESCRIPTION
AGG previously performed a geotechnical investigation (AGG Report No. DE19-282)for the CentrePort Trail
Phase I alignment. It is understood that the City of Fort Worth would like to preserve the existing trees without
flattening the existing steep slopes. It is further understood that additional test borings have been requested in
order to provide recommendations for soil nail reinforced and/or drilled shafts for retaining walls F and G.
See the attached Add Service from Alliance Geotechnical Group.
To perform these additional services, Halff is requesting a lump sum fee of$35,945.00 for the geotechnical work
by AGG.
Additional Services total: $35,945.00
We request your signature below to confirm the scope and fee. If the scope and/or fee is not acceptable, please
notify us immediately.
CITY OF FORT WORTH HALFF ASSOCIATES INC.
By: By:
(Print name)
Title: Title:
Signature: Signature:
Date: Date:
����,,ft_UMC C GEOTECHNICAL ENGINEERING
� ENVIRONMENTAL CONSULTING
GEOTE-CM�'y , CI_+- CONSTRUCTION MATERIALS ENGINEERING AND TESTING
tLc(�;,Jyr CONSTRUCTION INSPECTION
December 3, 2020
Ms. Laura Johnson
Senior Project Manager
Half Associates, Inc.
1201 N. Bowser Road
Richardson, Texas 75081
Phone: (214) 346-6311
Email: ljohnson@halff.com
Re: Proposal for Supplementary Geotechnical Investigation
CentrePort Trail —Retaining Walls F & G
Fort Worth/Grand Prairie, Texas
AGG Proposal No. P20-1105E-R1
Dear Ms. Johnson,
Alliance Geotechnical Group (AGG) understands that we have been selected to provide
geotechnical engineering and testing services at the above noted project. We understand that
AGG has been selected based on qualifications in accordance with the Professional Services
Procurement Act for providing geotechnical services. A detailed scope and project pricing are
provided below.
PROJECT DESCRIPTION
AGG has previously performed a geotechnical investigation (AGG Report No. DE19-282) for the
CentrePort Trail Phase I alignment. It is understood that the City of Fort Worth would like to
preserve the existing trees without flattening the existing steep slopes. It is further understood
that additional test borings have been requested in order to provide recommendations for soil nail
reinforced and/or drilled shafts for retaining walls F and G.
SCOPE OF WORK
The geotechnical investigation performed for the referenced project will consist of field and
laboratory investigations, engineering analysis, and a report prepared by a Registered
Professional Engineer. This proposal includes only the field and lab investigations.
Field Invest! ation
The site is generally not accessible to truck mounted drilling equipment due to steep slopes and
dense trees. Therefore, we will generally profile steep existing slopes by hand sampling along the
slopes as described below.
This site is accessible to buggy mounted drilling equipment at 3 locations. Therefore, three (3)
additional test borings will be drilled for retaining wall F and retaining wall G. These borings must
be drilled at the top of the steep existing slopes about 60 to 80 feet from the actual wall alignment.
Dallas - Ft. Worth -� Frisco - Dayton - Longview - Huntsvill-e
3228 Halifax Street - Dallas, Texas 75247
Te1: 972-444-8889 - Fax: 972-444.8893 - www.aggengr.com —OR'B'
fLUfiNCE
AGGGEOTECHNICRL
GROUP Proposal for Supplementary Geotechnical Investigation
CentrePort Trail— Retaining Walls F & G
Fort Worth/Grand Prairie, Texas
AGG Proposal No. P20-1105E-R1
Page 2
The retaining wall test borings will be drilled until 15 feet of unweathered rock is penetrated or 30
feet below the bottom of finished trail grade, whichever is deeper. In order to drill 30 feet below
the bottom of the finished trail grade, we anticipate drilling the test borings to depths of 75 feet.
The three test borings will be used to identify the bearing stratum and provide design parameters
for straight shaft piers
Subsurface soil samples will be secured with thin walled tube and/or split spoon samples
depending on soil type and consistency. Rock encountered in the borings will be evaluated using
the Texas Department of Transportation Penetrometer (TxDOT Cone). For the retaining wall
borings, TxDOT cone testing will be performed in the soil at a depth of 3 feet then on 5 foot
intervals and rock on 5 foot intervals. All samples will be properly logged, packaged, sealed, and
placed in a core box for transportation to the laboratory.
In addition to drilling additional test borings, soil probings will be taken along the steep slopes in
three separate areas in order to identify the stratigraphy along the slopes. It is assumed that the
soils encountered along the slopes are representative of the horizontal soil stratigraphy for that
elevation. Classification testing will be performed on the samples gathered from the soil probings.
Alliance Geotechnical Group assumes that the client will obtain the right-of-entry to the private
properties. It is understood that access to the boring locations will require an ATV buggy drill rig
to travel down existing dirt roads in order to access the boring locations. We understand that some
tree limbs may be required to be cut down in order to provide access to our ATV Buggy drilling
rig. A line item has been included in our scope for cutting down selected tree limbs to access the
boring locations. The tree clearing fee is based upon the downed tree limbs being left on site.
Should unusual access or soil conditions be encountered, we will call you with a recommendation
and cost estimate to explore these unusual conditions. AGG understands that any Right of Entry
permits required to enter TRE's ROW will be obtained by the client.
AGG will contact Texas 811 and the City of Fort Worth's and Grand Prairie's Water Departments
to have underground utilities located prior to beginning field activities. However, AGG is not
responsible for damage to underground utilities that are not identified prior to drilling.
Laboratory Investigation
Laboratory tests will be conducted to classify the soil and to evaluate the volume change potential
and strength of the soil present at the site. Soil classification tests will consist of Atterberg limits
(plasticity index), moisture content and sieve analyses. The strength of the soil will be estimated
using hand penetrometer tests and unconfined compression strength testing.
Engineering Analyses
Results of field and laboratory work will be presented in an engineering report that is signed and
sealed by Registered Professional Engineer of Texas. The report will include the following:
1. Plan of borings, boring logs, water level observations, and laboratory test results.
LIMCE
G OTECHNICIRL
L(SOUP Proposal for Supplementary Geotechnical Investigation
CentrePort Trail— Retaining Walls F & G
Fort Worth/Grand Prairie, Texas
AGG Proposal No. P20-1105E-R1
Page 3
GEOTECHNICAL FEES
Based on the proposed scope of work, the lump sum fee for this geotechnical investigation would
be $35,945.00.
TERMS AND CONDITIONS
If this proposal meets with your approval, please sign below to authorize Alliance Geotechnical
Group to perform the work. Please contact us after reviewing our proposal if you have any
questions. We look forward to working with you on this project.
Sincerely,
ALLIANCE GEOTECHNICAL GROUP
C Z
Login Tucker, E.I.T. Mark J. F row, .E
Staff Engineer Senior Vice President
ACCEPTED BY:
Name/Title Date