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AMENDMENT No.1 CONTRACT MO.
TO CITY SECRETARY CONTRACT No. 38823
WHEREAS, the City of Fort Worth (CITY) and S&B Infrastructure, Ltd. ,
(ENGINEER) made and entered into City Secretary Contract No. 38823, (the
CONTRACT) which was executed authorized by M&C C-23584 on the 9th day of
June, 2009 in the amount of $159, 371. 05; and
WHEREAS, the CONTRACT involves engineering services for the
following project :
Upper Widow Lake Channel Master Plan Open Channel Stu 4y, Study No.
SWS-013; and
WHEREAS, it has become necessary to execute Amendment No. 1 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 proposal dated December 1st, 2014, a
copy of which is attached hereto and incorporated herein. The cost to
City for the additional design services to be performed by Engineer
totals $17,125. 80.
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 $176,496, 85,
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rn 3.
All other provisions of the Contract, which are not expressly
amended herein, shall remain in full force and effect.
City of Fort Worth
Professional Services Agreement Amendment Template OFFICIAL RECORD
PMO Official Release 8/1/2012
Page I of 2 CITY SECRETARY
Fir.WORTH, TX
EXECUTED and EFFECTIVE as of the date last written by a signatory, elow.
APPROVED: t
City of Fort Worth ENGINEER J
S&B Infrast ucture, Ltd.
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Fernando Costa Name
Assistant City Manager Title "
DATE: DATE:
APPRO AL RECOMMENDED:
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Douglas W. bWiersig, Ph.D. , P.f
Director, TransportatioiVPublic Works
APPROVED AS TO FORM AND LEGALITY: M&C: N/A
CWO.1� Date:
Douglas W. Black
Assistant City Attorney
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Professional Services Agreement Amendment Template GOTY ISECRETARV
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Page 2 of 2 F-9. i1tJ�Q OlT\{�,q 11�p�.r�
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5&B INFRASTRUCTURE,LTD.
December 1, 2014
Ms. Mary Hanna,P.E., CFM
Stormwater Management,TPW
City of Fort Worth
1000 Throckmorton Street
Fort Worth,Texas 76102
RE; Upper Willow Creek Open Channel Study
SWS-013
Dear Ms. Hanna:
With this letter, S&BI is requesting approval of Amendment 1 to address the remaining outstanding
technical comments to the above referenced project that are above and beyond the original contract
scope. Enclosed with this letter is a supplemental scope and fee estimate for this work.
Project Budget Summary
Original Total Contract Additional
Task ID Task Description Contract Previous Amount Amount per
Amount Invoices Remaining Amendment
#1
Task 3 Development of Hydrologic Models $ 20,925.60 $ 20,925.60 $ $ 7,981.50
Task 4 Develo ment of Hydraulic Models $32,393.55 $ 32,393.55 $ - $ 9,144.30
Totals $53,319.15 $53,319.15 $ 17,125.80
Please feel free to contact me if you should have any questions or need additional information on this
request.
Sincerely,
Nelson B. "Barb"Nuckles, P.E.
Senior Project Manager
Enc. Attachment A,Amendment 1 Scope
Amendment 1 Level of Effort Estimate
3535 Sage Road Houston,Texas 77056 T: 713.845.5401 F: 713.993.9301 www.sbinfra.com
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ATTACHMENT "A" AMENDMENT 1
Scope of Work Upper Willow Lake Channel Master Plan Open Channel Study
Study No. SWS-013
The scope set forth herein defines the work to be performed by the ENGINEER in
completing the project. Both the CITY and ENGINEER have attempted to clearly define the
work to be performed and address the needs of the Project.
OBJECTIVE
The objective of this supplement is to address the remaining outstanding technical
comments from Halff and Associates and from City of Fort Worth.
WORK TO BE PERFORMED
Task 1. Project Management—No Change Proposed
Task 2. Data Search, Collection, Field Reconnaissance, Stream Condition —
Supplement Added
Task 3. Development of Detailed Hydrologic Models—Supplement Added
Task 4. Development of Hydraulic Models and Floodplain Maps—Supplement Added
Task 5. Watershed Flood Hazard Assessment—No Change Proposed
Task 6. Proposed Flood Mitigation Alternative Analysis—No Change Proposed
Task 7. Quality Assurance and Quality Control Procedures— No Change Proposed
Task 8. Letter of Map Revision Application and Support—No Change Proposed
TASK 2. DATA SEARCH, COLLECTION, FIELD RECONNAISSANCE, STREAM
CONDITION
ENGINEER will provide services as follows.
2.1. Provide finished floor elevations and lowest adjacent grades of buildings and
residential homes within the current effective floodplain and anticipated revised
areas.
TASK 3. DEVELOPMENT OF DETAILED HYDROLOGIC MODELS
3.1. Hydrologic Model Development
• Additional watershed delineation and HMS model development and analysis to
address current Halff and City of Fort Worth technical comments.
3.2. Results and Conclusions
• Revise exhibits and summary of results for updated HEC-HMS model
• Modifications to Task Summary Report
City of Fort Worth,Texas
Attachment A Amendment 1
Page 1 of 2
TASK 4. DEVELOPMENT OF DETAILED HYDRAULIC MODELS
4.1. Hydraulic Model Development
• HEC-RAS cross section location revision
• Hydraulic model development and analysis
• Additional modeling efforts for IH-20 drainage structure
4.2. Results and Conclusions
• Revise exhibits and summary of results for updated HEC-RAS model
0 Modifications to Task Summary Report
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City of Fort Worth,Texas
Attachment A Supplement i
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