HomeMy WebLinkAboutC2024-274 - 3/19/2024 - Approved Docusign Envelope ID: 1A1AABAD-B336-4ECC-A8BA-AD087EE0225D
O�tP Service Agreement No. 204
CITY OF CORPUS CHRISTI
AMENDMENT NO. 10 to the
CONTRACT FOR PROFESSIONAL SERVICES
1852 .
The City of Corpus Christi, Texas, hereinafter called "CITY," and ARDURRA GROUP, INC. dba LNV
hereinafter called "CONSULTANT," agree to the following amendment to the Contract for Professional
Services for OSO WATER RECLAMATION PLANT (WRP) PROCESS UPGRADE & BREAKPOINT
CHLORINATION (BPC) FACILITY DECOMMISSIONING (Project E12206 — Design Contract, Project
20084A— Construction Contract), as authorized and amended by:
Original Contract June 11, 2013 Motion No. M2013-102 $ 9,998,629.00
Amendment No. 1 May 11, 2015 Administrative Approval $ -
Amendment No. 2 October 26, 2015 Administrative Approval $ -
Amendment No. 3 Aril 13, 2016 Administrative Approval $ -
Amendment No. 4 January 31, 2017 Administrative Approval $ -
Amendment No. 5 July 2, 2018 Administrative Approval $ -
Amendment No. 6 January 23, 2020 Administrative Approval $ -
Amendment No. 7 February 22, 2021 Administrative Approval $ -
Amendment No. 8 May 3, 2021 Administrative Approval $ -
Amendment No. 9 October 27, 2022 Administrative Approval $ 49,900.00
IN THE ORIGINAL CONTRACT, EXHIBIT A, SCOPE OF SERVICES, shall be modified as shown in
the attached Exhibit A.
IN THE ORIGINAL CONTRACT, COMPENSATION shall be modified as shown in the attached Exhibit
A for an additional fee not to exceed $ 999,167.00 for a total revised fee not to exceed $11,047,696.00.
All other terms and conditions of the June 11, 2013, contract between the "CITY' and "CONSULTANT"
and of any amendments to that contract which are not specifically addressed herein shall remain in full
force and effect.
CITY OF CORPUS CHRISTI ARDURRA GROUP, INC dba LNV
Signed by:
DocuSigned by: ,I
<��� 1/27/2025 �OU/t, S' �,t,l1t,I�,dt,G�t,V 1/24/25
A9677079C39E468...
Je dmonds, P.E. Date Dan S. Leyendecker, P.E. Date
Director of Engineering Services Managing Principal & Regional Director
801 Navigation, Suite 300
Corpus Christi, Texas 78408
APPROVED AS TO LEGAL FORM: dlevendecker(@ardurra.com
DocuSigned by:
J (� 1 " 1/27/2025
ss's an I y Attorney Date M2024-039
Authorized By
Council 3/19/2024
ATTEST RH/SB
Kebecca 1fgata
City Secretary Date
Docusign Envelope ID: 1A1AABAD-B336-4ECC-A8BA-AD087EE0225D
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ARDURRA
November 21, 2024
Mr. Jeff Edmonds, P.E.
Director of Capital Programs
City of Corpus Christi
P.O. Box 9277
Corpus Christi, Texas 78469-9277
RE: AMENDMENT 10 TO PROFESSIONAL SERVICES CONTRACT
Oso WRP Process Upgrades and BPC Facility Decommissioning
City Project 20084A
Dear Mr. Edmonds:
Please consider this letter to be Amendment 10,which requests: 1)new funding which modifies
Original Basic and Additional Services for services to be performed in addition to what was
previously authorized; ii) modification of Original Basic as a result of originally scoped item
removed from the original design; iii) new funding which modifies Original Basic and
Additional Services for designing and constructing new control panels at the Oso WRP.
Note:
Start-up & Training task funds is expected to be needed two (2) years from start of
construction at commissioning of items under Phase BI of the Oso WRP Phasing plan. It
is anticipated that additional funding will be sought near the Start-up period..
BACKGROUND
A summary of the scope of work for the original contract along with the previously executed
contract amendments is described below:
Original Contract- The original contract, Oso Water Reclamation Plant Nutrient Removal and
Re-rate to 24 MGD—Phase 2, was approved by City Council on June 11, 2013 by Motion No.
M2013-102 for an amount not to exceed $9,998,629.00. The scope of the project included
major facility improvements and capacity upgrades at the Oso WRP(Contract"A") along with
the decommissioning and replacement of the Laguna Madre WWTP with lift station (Contract
`B"). However, LNV/Ardurra only received Notice to Proceed (NTP) for permitting and
preliminary design services, for a total not to exceed fee of$1,493,283.
Amendments No. 1 - 5 - From 2015 through 2018, LNV/Ardurra received authorization
through various zero-dollar amendments. These amendments included a combination of new
tasks not originally anticipated along with some portions of the original scope of work. For
AMD. NO. 10
EXHIBIT "A"
801 NAVIGATION I SUITE 300 1 CORPUS CHRISTI,TEXAS 78408 Page 1 of 9
OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM g
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instance, on May 6, 2016, the City issued an NTP to design the new lift station and headworks
at the Oso WRP. These facilities had been included in the original scope of work and due to
the condition of the existing facilities,the City elected to expedite the work by separating them
into their own bid package and proceeding with construction of these improvements.
Construction of the new lift station and headworks is now nearing completion.
Amendment 6—This was executed in 2020 and the scope of work included updates to two (2)
construction packages shown below:
• Oso WRP Lift Station and Headworks (E12206): Amendment 6 included a re-
allocation of budget for services to be performed in addition to what was previously
authorized. These included an extended construction duration, conformed documents,
pump witness testing, decommissioning plan, SCADA& I&E coordination,bar screen
change order, generator change order and start-up and training.
• Oso WRP Process Upgrades (20084A): Amendment 6 also included a re-allocation of
budget for services associated with designing,bidding, and constructing a modified set
of improvements at the Oso WRP, including a 3rd aeration basin,process air upgrades,
a new blower building, secondary clarifier traveling bridge modifications and chlorine
contact chamber improvements to meet the goals established in the Treatment Process
Evaluation Technical Memorandum, dated April 2019.
The improvements proposed under the Oso WRP Lift Station and Headworks project are
substantially complete and the Oso WRP Process Upgrades are currently in Bid Phase.
Amendment 7 — This was executed on February 22, 2021 and requires Ardurra to adhere to
special project procedures outlined in the "Wastewater Consent Decree" during the
performance of engineering work on this project.
Amendment 8 — On May 5, 2021, Ardurra received authorization for amending the original
contract, which was a zero-dollar amendment. The purpose of the amendment was to provide
additional services for Solids Handling and Miscellaneous upgrade needs identified at the 75
percent design completion milestone of the Oso Process Upgrades project (City Project
20084A).
Amendment 9 — On October 27, 2022, Ardurra received authorization for amending the
original contract.As a part of 90%design review comments received from the City, staff chose
to reduce the overall construction budget by approximately $1 OM and eliminated a number of
items from the scope of work. The objective was to address critical needs for reliable
wastewater treatment at Oso WRP and maintain the estimated cost of construction under the
City's current budget of$70M. As a result of the reduction in the scope of the work, the 90%
AMD. NO. 10
EXHIBIT "A"
801 NAVIGATION I SUITE 300 1 CORPUS CHRISTI,TEXAS 78408 Page 2 of 9
OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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design package, along with Solids Handling PER would have to be revised to account for the
removal and/or revision of various items.
DESCRIPTION OF AMENDMENT NO. 10
With the on-going Oso Process Upgrades project currently under construction, the City
requested that Construction Phase Services and Additional Services for various projects scope
additions and the amendments of existing contract fees. This amendment has been divided into
two (2) scope of work sections for simplicity. The following sections summarize the items to
be included in the scope of work:
➢ SCOPE OF WORK 1: OSO WRP PROCESS UPGRADES
The tasks outlined in Section 1 shall apply to the following summary of previously scoped work:
• Additional Construction Phase Services Due To Delays in Start of Construction
and Extended Construction Duration — A 28-month delay in start of construction
(02/2022 to 06/2024) due to the addition of various scoped items to the original
contract a resulted in impacts to labor rates in prior approved fees under Amendment
6. In addition, the extension of construction duration from 32 months to 51 months (19
months addition) due to the size of complexity of the project will require additional
level of effort for construction phase services.
o As a result, this amendment will include additional fees to account for
escalation of labor rates for design team labor rates because of the delays and
additional effort for construction administration due to the contract time
extension.
o This Amendment will allocate budget for Construction Phase Services and
Windstorm Certification services associated with solids handling
improvements (Polymer building) of Amendment 8. The tasks included in this
Amendment were not included in previously executed contracts.
• Deduct for Reduced Scope (CCC 1-4 Scope Removal from Original Scope) —
During the final designs review City staff requested the removal of the Chlorine
Contact Chambers 1-4 from the overall scope of work to reduce the overall
construction budget. For this reason, Construction phase budget in the original
contract are being modified to offer a credit to the City.
These tasks are intended to be included in the Oso Process Upgrades for construction and the
scope of work for the tasks are described in detail below.
AMD. NO. 10
EXHIBIT "A"
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OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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The Engineer will perform the following tasks:
A. BASIC SERVICES
1: Preliminary Design Phase— Completed
2: Design Phase—Completed
3: Bid Phase—Completed
4: Construction Phase - Construction Phase Services that have been scoped in the original
scope of work will be provided. However, the level of effort of this task will only apply to
the work described above.
Meetings:
• Pre-construction conference—N/A
• General Administration and Project Meetings
• Conduct regular site visits to site (at least two (2)per month) for an additional 15-
month construction contract extension.
• Four(4) additional Substantial/Final Completion Inspection
Deliverables:
Review equipment submittal and maintain submittal log.
• Review and interpret field and laboratory tests.
Provide interpretations and clarifications of contract documents.
Review Contractor or City-requested change as necessary
• Substantial Completion Recommendations & Punch list
Final Completion Recommendation and Punch List
(1)Ful size of Record Drawings
B. ADDITIONAL SERVICES
5: Start-Up & Training—N/A
• To be requested in the future
6: Warranty Phase (T&M)—N/A
• To be requested in the future
7: SCADA & O&M Documentation (T&M)
• Included in the scope of services under Amendment 6
Task 12: Windstorm Certification - Windstorm Certification: The Engineer will perfonn
Windstorm calculations, inspections, and provide certification for the new polymer
building and canopy, supports and foundations. This includes all Windstorm tasks outlined
in the original scope of work to ensure design meets IB code and TDI requirements.
AMD. NO. 10
EXHIBIT "A"
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OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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➢ SCOPE OF WORK 2: OSO WRP HEADWORKS CONTROL PANEL
RELOCATION
The tasks outlined in Section 2 shall apply to the following summary of work to be added to the
Process Upgrades Project:
In 2022, under City Project E12206, the Oso WRP Headworks and Lift Station project was
completed, providing a new headworks facility (including a new Multi-Rake Screen and grit
removal system), Lift Station, and Odor Control Units. Recently, the plant has experienced
multiple issues with portions of the electrical components at the headworks facility that have
affected the daily operations of the plant. Upon investigation by both plant staff and Ardurra
(Engineer), areas of corrosion were observed on the electrical main control panels located on
the upper level of the Headworks facility. The Headworks facility is a crucial part of the
operation of a wastewater treatment plant by reducing the presence of rags, floatable and grit
that can damage the downstream equipment. Reduced performance of the Headworks units can
result in reduced performance of the plant and, ultimately, the exceedance of permit limits at
the effluent. Therefore, the City has requested that Ardurra provide plans and specifications for
the relocation of the Headworks' main control panels to address the issue of corrosion and
prevent any further damage to the equipment.
The electrical panels to be relocated include the main control panels for the Muliti-Rake Screens
with Washer/Compactors, and the grit removal equipment (Teacups, Hydrogritter and grit
pumps). With this relocation, extensive modifications will be required for the routing of the
electrical and control conduits and wires from ECR5 to the control panels and from the control
panels to the process equipment. Existing upper level "hands-on" devices, such as control
switches and indicating lights will remain at the local control stations adjacent to the process
equipment. The new main control panels will have limited user interface devices.
The purpose of this task authorization is to provide the plans and specifications for the relocation
of the process equipment's main control panels located on the upper level of the Headworks
facility to a new location on the lower level. These plans and specifications will be integrated
into the construction phase of the City Project 20084A- Oso WRP Process Upgrades and BPC
Facility Decommissioning project which is currently in construction phase.
SCOPE OF WORK
The Engineer will perform the following tasks:
A. BASIC SERVICES
1: Preliminary Design Phase—N/A
2: Design Phase
AMD. NO. 10
EXHIBIT "A"
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OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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2.01. Perform project management tasks including the preparation of project work plan,
schedules and invoices, and providing status update reports.
2.02. Conduct Kickoff Meeting to introduce the project team to City staff, establish project
communications protocols, confirm project goals and objectives,review scope, schedule,
and budget, and coordinate initial project tasks.
2.03. Review Headworks record drawings and specifications, and coordinate with process
equipment vendors of existing equipment and control panels for cost and delivery time
estimates for the control panels replacement.
2.04. Conduct site visit to determine the main control panels to be demolished and replaced at
new location; to determine preliminary routing of electrical and control conduit between
the ECR 5 and the new location of the panels and between the process equipment and the
new location of the panels; and determine optimal new location for the control panels.
2.05. Conduct interdisciplinary coordination for the completion of the tasks under this task
authorization as well as the integration of these items with the Oso WRP Process
Upgrades project.
a. Update the relevant contract documents and plans in the Oso WRP Process Upgrade
and BPC Decommissioning project to incorporate and reflect changes made as part
of the control panels relocation.
2.06. Prepare and submit 60% plans and technical specifications, including civil, structural,
architectural, electrical, and HVAC systems.
2.07. Prepare 60% construction cost estimates.
2.08. Attend one (1) 2-hour face-to-face review meeting with the City for the 60% design
deliverable and provide agenda and minutes as necessary.
2.09. Address City comments on the 60% submittal.
2.10. Perform quality assurance and quality control (QA/QC) on all design deliverables.
Document internal QA/QC review comments on the 60% Design drawing and
specifications and address all comments.
Meetings:
• One (1) two-hour Kickoff meeting
• Fourteen (14) one-hour weekly internal meeting
• One (1) two-hour 60% face-to-face Review Workshop
Deliverables:
AMD. NO. 10
EXHIBIT "A"
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OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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• Monthly status reports and invoices
• 60%Design Completion
0 2 Sets of Plans
0 2 Sets of Technical Specifications
o Construction Cost Estimates
o Portable Document Format(PDF) copies of all documents
3: Bid Phase—N/A
4: Construction Phase
Included in the Construction Phase Services SOW 1 (This amendment)
Meetings:
• Included in the Construction Phase Services SOW 1 (This amendment)
Deliverables:
• Included in the Construction Phase Services SOW 1 (This amendment)
• Submittal review and RFI Responses
• Record drawings
B. ADDITIONAL SERVICES
5: Start-Up & Training—N/A
• To be requested in the future as part of the Oso Process Upgrades project
6: Warranty Phase (T&M) -N/A
• To be requested in the future as part of the Oso Process Upgrades project
7: SCADA & O&M Documentation (T&M)
• Included in the scope of services under Amendment 6
11:Architectural Services - The Engineer will provide architectural services to support tasks
outlined above for scope of work 2.
12:Windstorm Certification - The Engineer will perform Windstorm calculations,
inspections, and provide certification for the new building, supports and foundations. This
includes all Windstorm tasks outlined in the original scope of work to ensure design meets IB
code and TDI requirements.
22: Construction Sequence Plan Development & MOPO (Lump Sum)
22.01. Incorporate control panels relocation design updates to the Oso WRP Process Upgrades
project's construction sequence plan to communicate sequencing to the Contractor.
AMD. NO. 10
EXHIBIT "A"
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22.02. Attend one (1) two-hour construction sequencing review workshop with the City.
Meetings:
• One (1) two-hour construction sequencing review workshop with plant staff and
construction department personnel.
SCHEDULE:
All work under Amendment No. 10 of this contract, as requested by the City, shall be
completed by the Engineer in accordance with the schedule shown below.
TASK DURATION
SCOPE OF WORK 1: OSO WRP PROCESS UPGRADES
Basic Services
4. Construction Phase 51 Months After Bid
Additional Services
5. Start-Up & Training N/A
6. Warranty Phase (T&M) N/A
SCOPE OF WORK 2: OSO WRP HEADWORKS CONTROL PANEL RELOCATION
Basic Services
1. Preliminary Design Phase N/A
2. Design Phase 3.5 months from NTP
3. Bid Phase N/A
4. Construction Phase 13.5 months from NTP
Additional Services
5. Start-Up & Training N/A
6. Warranty Phase (T&M) N/A
22. Construction Sequencing Plan Development
3.5 months from NTP
and MOPO
AMD. NO. 10
EXHIBIT "A"
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OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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ARDURRA
FEES:
A. The fee for basic and additional services for the different items listed in this
amendment is shown in the table below. The City will pay the Engineer for
all Basic and Additional Services as shown in"ATTACHMENT F. The fees
for all basic and additional services except Construction Phase, Warranty
Phase will be Lump sum fees and shall represent full and total compensation
for services and for all expenses incurred in performing these services.
Construction Phase services will be billed on a Time and Material (T&M)
basis and will be billed in accordance with the Engineer's standard hourly rate
for a maximum-not-to-exceed amount.
The Engineer will submit monthly statements for services rendered and fees
will be billed in accordance with "ATTACHMENT F. The City will make
prompt monthly payments in response to the Engineer's monthly statements.
B. Summary of fees: Refer to ATTACHMENT 1.
If you have any questions or if you would like to discuss in more detail, please feel
free to call me at 361-883-1984.
Sincerely,
V 1
40�64
Logan Burton, PE
Central Region Water Practice Director
lburton(&.ardurra.com
O: (361) 883-1984
M: (361) 876-0673
801 Navigation Blvd., Suite 300
Corpus Christi, TX 78408
www.ardurra.com
AMD. NO. 10
EXHIBIT "A"
801 NAVIGATION I SUITE 300 1 CORPUS CHRISTI,TEXAS 78408 Page 9 of 9
OFFICE 361.883.1984 1 FAX 361.883.1986 1 WWW.LNVINC.COM
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