HomeMy WebLinkAbout163-21 RESOLUTION113 West Mountain Street
Fayetteville, AR 72701
(479) 575-8323
Resolution: 163-21
File Number: 2021-0386
FTN ASSOCIATES, LTD. AMENDMENT NO. 1:
A RESOLUTION TO APPROVE AMENDMENT NO. 1 TO THE PROFESSIONAL
ENGINEERING SERVICES AGREEMENT WITH FTN ASSOCIATES, LTD. IN THE
AMOUNT OF $107,706.00 FOR FURTHER ASSESSMENT OF THE LAKE FAYETTEVILLE
SPILLWAY CAPACITY AND RECOMMENDED IMPROVEMENTS AS REQUIRED BY THE
ARKANSAS NATURAL RESOURCES COMMISSION
WHEREAS, on October 1, 2019, the City Council passed Resolution 223-19 to approve a
Professional Engineering Services Agreement with FTN Associates, Ltd. for the completion of Phase
One of the assessment of the Lake Fayetteville Spillway capacity and provided recommendations for
improvements as required by the Arkansas Natural Resources Commission; and
WHEREAS, the results of Phase One demonstrated that the current spillway has the capacity to pass
approximately 70% of the Probable Maximum Flood and Amendment No. 1 will provide funding to
consider several modification options to the spillway to achieve the capacity to pass 100% of the
Probable Maximum Flood.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
FAYETTEVILLE, ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby approves Amendment
No. 1 to the Professional Engineering Services Agreement with FTN Associates, LTD. in the amount
of $107,706.00 for further assessment of the Lake Fayetteville Spillway Capacity and to provide
recommendations for improvements to achieve the capacity to pass 100% of the Probable Maximum
Flood as required by the Arkansas Natural Resources Commission.
Page 1 PdMed on &1=1
Resolution: 163-21
File Number: 2021-0386
PASSED and APPROVED on 6/1/2021
Attest:
R k-A/7AVA �&JZIII
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Kara Paxton, City Clerk Treasurer ImIlIkO
Page 2 Printed on 612121
City of Fayetteville, Arkansas 113 West Mountain Street
Fayetteville, AR 72701
(479)575-8323
Text File
File Number: 2021-0386
Agenda Date: 6/1/2021 Version: 1 Status: Passed
In Control: City Council Meetinq File Type: Resolution
Agenda Number: A.18
FTN ASSOCIATES, LTD. AMENDMENT NO. 1:
A RESOLUTION TO APPROVE AMENDMENT NO. 1 TO THE PROFESSIONAL ENGINEERING
SERVICES AGREEMENT WITH FTN ASSOCIATES, LTD. IN THE AMOUNT OF $107,706.00 FOR
FURTHER ASSESSMENT OF THE LAKE FAYETTEVILLE SPILLWAY CAPACITY AND
RECOMMENDED IMPROVEMENTS AS REQUIRED BY THE ARKANSAS NATURAL
RESOURCES COMMISSION
WHEREAS, on October 1, 2019, the City Council passed Resolution 223-19 to approve a Professional
Engineering Services Agreement with FTN Associates, Ltd. for the completion of Phase One of the assessment
of the Lake Fayetteville Spillway capacity and provided recommendations for improvements as required by the
Arkansas Natural Resources Commission; and
WHEREAS, the results of Phase One demonstrated that the current spillway has the capacity to pass
approximately 70% of the Probable Maximum Flood and Amendment No. 1 will provide funding to consider
several modification options to the spillway to achieve the capacity to pass 100% of the Probable Maximum
Flood.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
FAYETTEVILLE, ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby approves Amendment No. 1 to
the Professional Engineering Services Agreement with FTN Associates, LTD. in the amount of $107,706.00
for further assessment of the Lake Fayetteville Spillway Capacity and to provide recommendations for
improvements to achieve the capacity to pass 100% of the Probable Maximum Flood as required by the
Arkansas Natural Resources Commission.
City of Fayetteville, Arkansas Page 1 Printed on 61212021
Tim Nyander
Submitted By
City of Fayetteville Staff Review Form
2021-0386
Legistar File ID
6/1/2021
City Council Meeting Date - Agenda Item Only
N/A for Non -Agenda Item
5/12/2021 WATER SEWER (720)
Submitted Date Division / Department
Action Recommendation:
Staff recommends approval of Amendment No. 1 to the Engineering Services Agreement with FTN Associates, Ltd.
in an amount not to exceed $107,706.00 for Assessment of the Lake Fayetteville Spillway Capacity and
Recommended Improvements as Required by the Arkansas Natural Resources Commission.
5400.720.1840-5314.00
Account Number
02064.1
Project Number
Budgeted Item? Yes
Does item have a cost? Yes
Budget Adjustment Attached? No
Budget Impact:
Water and Sewer
Fund
Water & Sewer Rate/Operations Study
Project Title
Current Budget
Funds Obligated
Current Balance
Item Cost
Budget Adjustment
Remaining Budget
$
241,885.00
$
26,947.63
$ 214,937.37
$
107, 706.00
V20180321
Purchase Order Number: Previous Ordinance or Resolution # 223-19
Change Order Number:
Original Contract Number:
Approval Date:
Comments: The original 2019 PO was closed out, a new PO and contract number will be issued for this amendment.
CITY OF
FAYETTEVILLE
ARKANSAS
MEETING OF JUNE 1, 2021
TO: Mayor and City Council
THRU: Susan Norton, Chief of Staff
Tim Nyander, Utilities Director
FROM: Corey Granderson, Utilities Engineer
DATE: May 12, 2021
CITY COUNCIL MEMO
SUBJECT: Amendment No. 1 to the Engineering Services Agreement with FTN
Associates, Ltd. for Assessment of the Lake Fayetteville Spillway Capacity
and Recommended Improvements as Required by the Arkansas Natural
Resources Commission
RECOMMENDATION:
Staff recommends approval of Amendment No. 1 to the Engineering Services Agreement with
FTN Associates, Ltd. in an amount not to exceed $107,706.00 for Assessment of the Lake
Fayetteville Spillway Capacity and Recommended Improvements as Required by the Arkansas
Natural Resources Commission.
BACKGROUND:
The Lake Fayetteville Dam is regulated by the Arkansas Natural Resources Commission
(ANRC) and is classified as an `intermediate -size, high -hazard' dam based on storage volume
and downstream conditions, respectively. The City of Fayetteville Water and Sewer Division is
responsible for Dam maintenance, inspection, and upkeep. The ANRC completed a
comprehensive inspection of the dam and available reports/plans most recently in Fall 2018.
One of the key findings by ANRC was that the spillway is reported to have a capacity to pass
50% of the Probable Maximum Flood (PMF), however, for an intermediate/high-hazard
classification the spillway must be capable of passing 100% of the PMF.
DISCUSSION:
FTN Associates, Ltd. is a local engineering firm with expertise in lakes, dams, hydraulics, and
hydrology. They were formally selected to provide engineering analysis and design regarding
the current Lake Fayetteville spillway capacity and to explore options for increasing this capacity
to pass 100% of the PMF. Phase One of this study is completed and provided the hydraulic and
hydrologic calculations necessary to define the PMF in this watershed, and demonstrated that
the current spillway passes about 70% of the PMF. Future Phases Two and Three would
analyze downstream effects (City of Johnson) and construction -level engineering design. After
each phase of this project, the City will meet with ANRC to ensure compliance and agreement
for next steps. With Phase One completed, and concurrence received from ANRC, Amendment
No. 1 will now provide funding for the Spillway Feasibility Analyses to look at several
modification options to the spillway to achieve the required 100% PMF. The hydraulic model will
Mailing Address:
113 W. Mountain Street www.fayetteville-ar.gov
Fayetteville, AR 72701
look downstream and assess the impacts of modifications at the spillway on downstream
property.
BUDGET/STAFF IMPACT:
Amendment No. 1 will increase the project cost by $107,706.00 for a total project budget of
$171,206.00. Funds are available in the Water & Sewer Rate/Operation Study account.
Attachments:
Amendment No. 1
Scope/Fee Matrix
Resolution 223-19
AMENDMENT NO. 1
To
AGREEMENT FOR PROFESSIONAL ENGINEERING SERVICES
Between
CITY OF FAYETTEVILLE, ARKANSAS
And
FTN ASSOCIATES, LTD. (FTN)
LAKE FAYETTEVILLE SPILLWAY IMPROVEMENTS
WHEREAS, on October 1, 2019, the City of Fayetteville, Arkansas (CITY OF FAYETTEVILLE)
and FTN Associates, Ltd. of Fayetteville, Arkansas (ENGINEER) entered into an Agreement for
engineering services in connection with the Lake Fayetteville Spillway Improvements (the
"Project"); and
WHEREAS, the CITY OF FAYETTEVILLE now wishes to increase the scope of work to include
performing a feasibility study, which may include updating the previously completed Phase I
hydrologic and hydraulic analyses and performing other analyses (if needed) to further support the
feasibility study and produce up to three (3) conceptual designs for proposed spillway alternatives,
which will provide the CITY OF FAYETTEVILLE with the basis for selecting a preferred alternative
for the spillway modification. The work shall also include project management, meetings, and general
coordination with the CITY OF FAYETTEVILLE contractor; and
WHEREAS, the current Agreement must now be amended to provide the additional scope and amount
of compensation to the ENGINEER for the additional work; and
NOW THEREFORE, in consideration of the mutual covenants and Agreements herein contained,
CITY OF FAYETTEVILLE and the ENGINEER, the parties hereto, stipulate and agree that the
Agreement for Engineering Services, dated October 1, 2019, is hereby amended in the following
particulars:
SECTION 5 — PAYMENTS TO ENGINEER
5.1 The increase in cost for Amendment No. 1 is $107,706.00, with the cumulative total Not to
Exceed for this project being $171,206.00. The CITY OF FAYETTEVILLE shall compensate
ENGINEER based on an hourly NTE basis.
APPENDIX A — SCOPE OF SERVICES
Add the following Paragraphs:
PHASE II — SPILLWAY FEASIBILITY ANALYSES
TASK I: UPDATE OF HYDROLOGIC AND HYDRAULIC ANALYSIS
FTN will review and update, as appropriate, the previously developed hydrologic and hydraulic
modeling, completed as part of Phase 1, with recent watershed changes and/or examine
proposed CITY OF FAYETTEVILLE projects that may impact the Lake Fayetteville spillway.
This task does not include further subdivision of existing hydrologic drainage basins, or
modeling of additional scenarios, storm events, or extents that were not previously included as
part of the Phase I — Existing and Proposed Conditions Evaluation. Modeling parameters for
Lake Fayetteville Spillway Improvements - Amendment No.1 Page 1
this task will be reviewed during any updates performed. Modification of model parameters
will only be performed if it is determined that the parameters provide more appropriate,
conservative values than those that were previously used in the Phase I analysis.
If further revisions (e.g., additional scenarios, storm events, or extents, etc.) are requested
beyond those described above, they can be performed as Additional Services.
TASK II: SPILLWAY FEASIBILITY ANALYSES SCENARIOS
Using the future conditions discharges developed in the previous Phases and Tasks as the
starting point, a proposed conditions model will be developed for up to three (3) conceptual
spillway modification scenarios. Due to the limited space at the current Lake Fayetteville
spillway location, the conceptual spillway scenarios may include, but not be limited to:
• An uncontrolled labyrinth weir to replace the existing spillway;
• An auxiliary, uncontrolled spillway placed at a secondary location on the dam, which
could include use of intake structure or culverts passing through the dam;
• Modify the crest elevation of the existing dam along with use of the current spillway;
• Develop a lake drawdown plan for active pre -storm management; and/or,
• A combination of any of the above.
At this time, there appears to be no one straightforward solution because of the spillway's
limited space and capacity, as each of the conceptual spillway scenarios has some limiting
constraint or inherent risk associated therewith. Prior to beginning analyses, FTN will meet
with the City to define up to three scenarios to be evaluated during this study.
Based on the size and hazard classification of the existing dam (i.e., intermediate size and high
hazard), the Spillway Design Flood (SDF) will be the full Probable Maximum Flood (PMF) in
accordance with Arkansas Natural Resource Commission (ANRC) rules. Various
configurations will be analyzed until a configuration is achieved that allows the SDF to be
conveyed through the structure without overtopping the dam.
TASK III: FEASIBILITY STUDY REPORT AND CONCEPTUAL DESIGNS)
Based on the results of the preceding tasks, FTN will develop schematic designs for up to three
(3) alternative designs and present these in a Feasibility Study Report. The report will include
a discussion of the analyses performed and supporting data, schematic drawings of proposed
improvements and conceptual design level opinions of probable construction costs.
TASK IV: COORDINATION AND PROJECT MANAGEMENT
Project management and client coordination, including preparation of monthly progress
reports, and up to three (3) meetings with the CITY OF FAYETTEVILLE personnel virtually
or in person.
Upon acceptance of this proposal, FTN will coordinate with the CITY OF FAYETTEVILLE
Point of Contact to schedule an initial meeting to go over the spillway scenarios for
consideration to assist the CITY OF FAYETTEVILLE in selecting up to three (3) conceptual
spillway scenarios for analysis prior to proceeding.
Lake Fayetteville Spillway Improvements - Amendment No.1 Page 2
DRAFT OUTLINE SCOPE OF WORK FOR SERVICES RELATED
TO REMAINING PHASES
PHASE III — DESIGN PHASE
(SPECIFIC SCOPE OF SERVICES TO BE DEVELOPED FOLLOWING COMPLETION OF PHASE 2)
(POTENTIAL FEE RANGE: $ $150, 000 - $225, 000)
TASK I: GEOTECHNICAL INVESTIGATION
TASK II: 30% CONCEPT DESIGN SUBMITTAL
TASK III: 75% DESIGN SUBMITTAL
TASK IV: FINAL DESIGN SUBMITTAL
TASK V: REGULATORY FLOODPLAIN COORDINATION AND COMPLIANCE
TASK VI: SECTION 404 PERMITTING (CONCURRENT WITH DESIGN TASKS
TASK VII: ADEEDEQ SHORT TERM ACTIVITY AUTHORIZATION (STAA)
TASK VIII: CONSTRUCTION STORM WATER PERMITTING
TASK IX: COORDINATION AND PROJECT MANAGEMENT
APPENDIX B — SCHEDULE AND DELIVERABLES
Add the following Paragraphs:
PROPOSED SCHEDULE
TASK
START *
END
PROJECT AUTHORIZATION
7/1/2021
HYDROLOGIC AND HYDRAULIC MODELING UPDATES
7/1/2021
10/31/2021
FEASIBILITY ANALYSES
10/1/2021
1/31/2022
FEASIBILITY REPORT AND CONCEPTUAL DESIGNS
12/1/2021
3/31/2022
PROJECT MANAGEMENT
7/1/2021
3/31/2022
* All dates calculated based off assumed start date of 7/1/2021.
DELIVERABLES
Feasibility Study Report describing the alternatives that were analyzed as part of the Project and
supporting data. Additionally, the report will include schematic designs for the alternatives considered.
Lake Fayetteville Spillway Improvements - Amendment No.1 Page 3
APPENDIX C — FEE SCHEDULE
2021 Fee Schedule'
FTN Associates, Ltd.
Labor Category Hourly Rate
Professional 7
$ 215.00
Professional 6
190.00
Professional 5
170.00
Professional 4
150.00
Professional 3
135.00
Professional 2
115.00
Professional 1
105.00
Technician 4
105.00
Technician 3
95.00
Technician 2
85.00
Technician 1
70.00
Executive Assistant
76.00
Word Processing
66.00
Direct Expenses
Should back-up data be requested for reimbursable expenses, it will be provided for an administrative fee.
Payment Terns
Unless other arrangements are made in writing, invoicing will be monthly for services completed and will
be sent via email to the Client. Payment is due in full within 30 days of invoice and are preferred to be paid
electronically through Automated Clearing House (ACH) system; however, other methods are acceptable.
A service charge of 1.5 percent per month will be charged on all balances over 30 days.
'Effective January 1, 2021 —December 31, 2021
IN WITNESS WHEREOF, CITY OF FAYETTEVILLE, ARKANSAS by and through its Mayor, and
ENOINEER, by its authorized officer have caused this Amendment to be duly executed this day of
2021.
CITY OF FAYETTEVILLC, ARKANSAS ENGINEER
Li
0
By:-�a
City Clerk
END OF AMENDMENT
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113 West Mountain Street
Fayetteville, AR 72701
(479) 575-8323
Resolution: 223-19
File Number: 2019-0588
FTN ASSOCIATES, LTD;
A RESOLUTION TO APPROVE A PROFESSIONAL ENGINEERING SERVICES AGREEMENT
WITH FTN ASSOCIATES, LTD., PURSUANT TO RFQ 419-01, IN THE AMOUNT OF $63,466.00 FOR
THE COMPLETION OF PHASE ONE OF AN ASSESSMENT OF THE LAKE FAYETTEVILLE
SPILLWAY CAPACITY AND RECOMMENDED IMPROVEMENTS AS REQUIRED BY THE
ARKANSAS NATURAL RESOURCES COMMISSION
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF FAYETTEVILLE,
ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby approves a professional
engineering services agreement with FTN Associates, Ltd., pursuant to RFQ #19-01, in the amount of
$63,466.00 for the completion of Phase One of an assessment of the Lake Fayetteville spillway
capacity and recommended improvements as required by Arkansas Natural Resources Commission.
PASSED and APPROVED on 101112019
No j� R K %T� sir
Attest: ■.■� ■■' GIiY .�yr••r
fA 5
�rrf-vi, •Fn
may'. �",qNS P`;•'.�.■.
Lisa Branson, Deputy City Clerkviz� ON CC)
Pa" 1 Printed on 101V19