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Home My WebLink About060733-A5 - Construction-Related - Contract - Brown and CaldwellCSC No. 60733-A5 AMENDMENT No . 5 TO CITY SECRETARY CONTRACT No. 60733 CSC No. 60733-A5 WHEREAS, the City of Fort Worth (CITY) and Brown and Caldwell, (ENGINEER) made and entered into City Secretary Contract No. 60733, (the CONTRACT) which was authorized by M&C 23-1075 on the 12th day of December, 2023 in the amount of $ 1,303,304.00; and WHEREAS, the CONTRACT was subsequently revised by: Amendment Number 1 in the amount of $ 1,797,323.00 which was authorized authorized by M&C # 24-5013 on June 11, 2024, Amendment Number 2 in the amount of $ 5,591,853.00 which was authorized authorized by M&C # 24-1132 December 10, 2024,Amendment Number 3 in the amount of $654,588.00 which was authorized authorized by M&C # 25-0089 on January 28, 2025, Amendment Number 4 in the amount of $515,450.00 which was authorized authorized by M&C # 25-1091 on December 9, 2025, WHEREAS, the CONTRACT involves engineering services for the following project: Emerging Contaminants - PFAS Treatability Study, CPN 104942; and WHEREAS, it has become necessary to execute Amendment No. 5 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 proposal attached hereto and incorporated herein. The cost to City for the additional design services to be performed by Engineer totals $677,860.00. (See Attached Funding Breakdown Sheet, Page -4-) 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 $10,541,377.00. City of Fort Worth, Texas. Prof Services. Agreement Amendment Revision Date: June 12, 2025 Page 1 of 4 OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX Emerging Contaminants - PFAS Treatability Study City Project No. 104942 3. All other provisions of the Contract, which are not expressly amended herein, shall remain in full force and effect. EXECUTED and EFFECTIVE as of the date subscribed by the City's designated Assistant City Manager. APPROVED: City of Fort Worth AUVW &— Dianna Giordano (Jul 29, 2026 08:26:08 CDT) Jesica McEachern Assistant City Manager 07/29/2026 DATE: 000vnn nn aQF FORt a ATTEST:o Oveg=0 !+g /lQ�4ilut2 („G2 Qatjnnt� 4g44w Jannette Goodall City Secretary APPROVAL RECOMMENDED: CF-nstopher Harde Jul 20, 2026 4:18:381T' CDT) Christopher Harder, P.E. Director, Water Department City of Fort Worth, Texas. Prof Services. Agreement Amendment Revision Date: June 12, 2025 Page 2 of 4 ENGINEER Brown a ald ell Adam Evans, P.E. Vice President DATE: June 19, 2026 OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX Emerging Contaminants - PFAS Treatability Study City Project No. 104942 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. -/; �Z-- Matt Kusnir, P.E. Senior Capital Projects Officer APPROVED AS TO FORM AND LEGALITY: jg� Douglas Black (Jul 22, 2026 10:51:10 CDT) Douglas W. Black Sr. Assistant City Attorney M & C N o . # : 26-0444 M&C Date: June 9, 2026 City of Fort Worth, Texas Emerging Contaminants - PFAS Treatability Study Prof Services. Agreement Amendment City Project No. 104942 Revision Date: June 12, 2025 Page 3 of 4 FUNDING BREAKDOWN SHEET City Secretary No. 60733 Amendment No. 5 Department I Fund -Account -Center I Amount Water I Fund 56002 - Water & Sewer Capital Project 1 $677,860.001 Total:1 $677,860.00 Emerging Contaminants - PFAS Treatability Study City Project No. 104942 April 16, 2026 EB:nAND .ell • Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study (CPN-104942) Amendment No. 5 - Additional Services Dear Matt: Additional services, not included in the original scope of the Project nor subsequent Amendments, were identified, discussed, and tracked for inclusion in a future contract amendment. The following proposed contract modifications (PCMs) are identified for in- clusion in Amendment No. 5: • PCM-11: Chemical Feed System and 48-in Transfer Pipe Modifications • PCM-12: PFAS Pilot Phase 3 Operations • PCM-13: Treated Water Pump Station HSC Evaluation • PCM-14: GAC Gallery Elevation Adjustment • PCM-15: Treated Water Pump Station Hydraulic Adjustment • PCM-16: Southeast Landfill Design for Electrical Service and Ancillary Support Systems The requested net contract change associated with these PCMs for Amendment No. 5 is $677,860.00, which brings the overall Project contract to $10,541,377.00. Included with this transmittal are the City Secretary - Amendment No. 5 form, the Texas Ethics Commission Form 1295 and the defined scope and proposed level of effort asso- ciated with each PCM. From our discussions it is understood that this amendment is planned for the May 12th City Council agenda. Please advise if you have any questions or additional information is required for this proposal. Very truly yours, Brown and Caldwell Chad Bartruff, Proje& Manager cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell CPM-104942 - Amend-05 20260417 City of Fort Worth Water Department Emerging Contaminants - PFAS Treatability Study CPN-104942 Amendment No. 5 - Budget Update Summary Phase Description Prior Budget (thru Amendment No. 4) Budget Revisions (Amendment No. 5) Revised Budget Totals 001 Project Management $72,503.00 $0.00 $72,503.00 002 Data Review and WQ Monitoring $284,851.00 $0.00 $284,851.00 003 PAC Bench -Scale Testing $124,537.00 $0.00 $124,537.00 004 GAC Bench -Scale Testing $250,438.00 $0.00 $250,438.00 005 Alternatives Assessment $240,424.00 $0.00 $240,424.00 006 Regulatory/Funding Coord $12,560.00 $0.00 $12,560.00 007 Treatability Evaluation Report $176,550.00 $0.00 $176,550.00 110 Project Management $98,720.00 $0.00 $98,720.00 120 Site Investigations $419,111.00 $0.00 $419,111.00 130 Process Integration Evaluations $353,107.00 $0.00 $353,107.00 140 Design Definition $464,221.00 $27,780.00 $492,001.00 150 Regulatory and Funding Coord $42,700.00 $0.00 $42,700.00 160 Implementation Analysis $193,873.00 $0.00 $193,873.00 170 Prelim Engineering Report $298,045.00 $0.00 $298,045.00 210 Project Management $235, 632.00 $27,140.00 $262, 772.00 220 TCEQ Pilot Study $675,220.00 $196,340.00 $871,560.00 230 Intermediate Design $2,974,961.00 $0.00 $2,974,961.00 240 Final Design $1,510,564.00 $221,583.00 $1,73Z147.00 245 Cathodic Protection Design $44,950.00 $0.00 $44,950.00 250 Regulatory and Code Compliance $77,070.00 $0.00 $77,070.00 260 Advert and Bid Support $176,810.00 $3,280.00 $180,090.00 270 NCP Compliance $372,920.00 $27,960.00 $400,880.00 301 Project Management $76,341.00 $11,460.00 $87,801.00 302 Data Collection and Review $50,639.00 $3,320.00 $53,959.00 303 Treatment Ails Assessment and Pilot Procurement $96,414.00 $3,360.00 $99, 774.00 304 Pilot Testing $194,002.00 $0.00 $194,002.00 305 Regulatory and Funding Coordination $19,840.00 $0.00 $19,840.00 306 Treatability Evaluation Report $51,874.00 $0.00 $51,874.00 307 Treatment System Design $274,640.00 $140,237.00 $414,877.00 308 Oncor and RNG Coordination $0.00 $15,400.00 $15,400.00 TOTALS $9,863,517.00 $677,860.00 $10,541,377.00 April 15, 2026 EBrnANa .well Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study CPN-104942 Proposed Change No. 11- Chemical Feed and 48-in Transfer Pipe Modifications (Rev1) Dear Matt: Amendment No. 2 - PFAS Treatment System Design (CPN-104942) identified specific scope items and additional assumptions and exclusions due to unknown project considerations at the time of scope development. Specific to this PCM, Amendment No. 2 defined limited scope related to the existing post-biofiltration sodium hypochlorite (SHC), liquid ammonium sulfate (LAS) systems, and pH adjustment chemical (sodium hydroxide). Attachment A of this PCM defines additional engineering design services to modify these existing chemical application systems as defined as part of the design progression and in coordination with FWWD in the project design coordination meetings. With integration of GAC process and Treated Water Pump Station it was known that the existing SHC and LAS injection points would require relocation. It was assumed that the planned treated water piping system layout could be configured to permit injection in proximity to the existing vaults at the Transfer Pump Station. With completion of the subsurface utility engineering (SUE) investigation, it was determined that the new treated water piping system could not be routed as planned and a more significant re- route of the existing SHC and LAS conveyance utilities (routing, manholes, utility coordination, etc) was required to facilitate maintenance of redundant SHC supplies from SHWTP and NHWTP and the LAS supply from NHWTP. SHWTP intermittently utilizes an existing post-biofiltration sodium hydroxide (caustic) application point, dependent upon water quality and chemistry, to maintain a target finished water pH. Requirements for post-GAC pH adjustment were not fully evaluated at the time of design scoping as pH impacts of biogrowth on the GAC pilot media were not yet observed. With progression of the GAC pilot, it was evident that the observed biogrowth did have a pH impact, decreasing the pH. Accordingly, installation of a secondary caustic feed point was discussed with FWWD operations staff. It was determined that a single new injection point could be installed on the common treated water pipe upstream of Clearwell No. 6. The planned installation requires a new injection manhole and chemical pipe trench/casing system with intermediate manholes as discussed in the 95% review meeting. The design of an active or passive approach to freeze protection of the caustic piping/tubing system is required. As presented in ORFI-019, the confirmed routing for the new treated water pipe to the existing transfer pipeline upstream of Clearwell No. 6 resulted in minimal existing piping to remain and required a special connection fitting to join the pipes, in addition to accommodating the new caustic injection manhole mentioned herein. To reduce project construction risks, replacement of the final pipe segments (<100 ft) of the 48-in pipe to the Clearwell No. 6 tee was recommended. Implementation of this design change required additional SUE coordination, site/profile design drawing updates and detailing for the installation. Upon your review, we would request your concurrence with this proposed contract change. Formal documentation of the contract change via amendment will be subsequently submitted aggregate to pending proposed change modifications (PCMs). Please advise if any questions or additional information is required for review of this proposal. Very truly yours, Chad Bartruff, P.EtPfoject Manager Brown and Caldwell cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell Nic Oltean, Brown and Caldwell ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 HOLLY WATER TREATMENT PLANTS CHEMICAL SYSTEM FEED AND 48-IN TRANSFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 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. PROJECT DEFINITION AND BACKGROUND Amendment No. 1 — SHWTP PFAS Process Preliminary Engineering (CPN-104942) included a preliminary review of the existing North WTP and South Holly WTP post -filtration disinfection strategies relative to integration of the GAC process (Task 3.3). The preliminary engineering review identified adjustments to the application of sodium hypochlorite (SHC) and liquid ammonia sulfate (LAS) post filtration at SHWTP. Design efforts included with the Amendment No. 2 design assumed reconnection of the existing the SHC and LAS systems to new injection points near the existing locations. However due to existing utilities that were subsequently identified, more significant utility design modifications were required. Based on these determinations, the following additional services will be performed: • Definition and development of demolition drawings and replacement designs for the existing SHC and LAS yard piping systems to feed the proposed application points at the TWPS and FTWTPS. • Modification of the existing SHC and LAS yard piping systems to integrate junction manholes and boxes to facilitate installation, operation, and maintenance. • Modify existing SHC/LAS utilities to accommodate the developed designs for the GAC PFAS infrastructure and to allow application at the modified FTWTPS and at the TWPS meter vault. • Maintain the SHWTP redundant SHC feed piping systems. The existing SHC and LAS feed pumps will be utilized. Per discussions with the CITY, static mixers will not be required based on the proposed injection locations and injector spacing. Further evaluation of the existing post -filtration pH management strategy was noted as dependent upon recommended piloting. GAC piloting was performed concurrent with design development as part of the Amendment No. 2 Phase 220 activities. ENGINEER reviewed the sodium hydroxide (caustic) application strategies and coordinated with the City of Fort Worth, Texas Attachment A PMO Release Date: 09.23.2012 Page 1 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 CITY for definition of a new SHWTP caustic application design. Based on these determinations, the following additional services will be performed: • Definition and development of design modification drawings for the SHWTP existing caustic application piping to provide a common application point upstream of Clearwell No. 6 and No. 7, with the preferred installation inclusive of the following: • Modify existing caustic feed pump discharge piping to permit manual switching of feed points. • Routing a carrier pipe and chemical feed hose from the existing Caustic Building to the application point. • Detailing of a pre -cast injection manhole and intermediate junction boxes similar to the existing SHC and LAS systems. • Definition of product and material specifications for the caustic system. • Design or ancillary installations such as heat trace and insulation. • The existing caustic feed pumps will be utilized and the existing FTWTPS application point will be maintained. • Perform five additional LEVEL A SUE locates. • Dependent upon confirmation of crossing utilities along 11 th Avenue and freeze protection options for the preferred flexible tubing system, alternative a HS-20 load rated, precast concrete trench system may be required and is assumed as basis of design for this PCM. As presented in ORFI-019, the confirmed routing for the new treated water pipe to the existing transfer pipeline upstream of Clearwell No. 6 resulted in minimal existing piping to remain and required a special connection fitting to join the pipes, in addition to accommodating the new caustic injection manhole mentioned herein. To reduce project construction risks, replacement of the final pipe segments (<100 ft) of the 48-in pipe to the Clearwell No. 6 tee was recommended to reduce construction risks. To implement this design change the following additional services will be performed: • Perform additional SUE coordination (four test holes) to supplement previous investigation data. • Develop extended pipe plan and profile drawings for the additional length of pipe. • Update site civil plans and adjust area layouts to include the additional areas of work. • Develop revised connection details and coordinate with the cathodic protection evaluation and design. This PCM-11 defines the engineering services for execution of these design tasks. This scope of work defines the tasks to develop biddable construction documents (design -bid - build) concurrent with the Amendment No. 2 design efforts. City of Fort Worth, Texas Attachment A Page 2 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 WORK TO BE PERFORMED This PCM-11 — Chemical Feed Modifications will be executed concurrent with Amendment No. 2 - SHWTP PFAS Treatment Design as defined by the following primary tasks. Phase 200 — PFAS Treatment Design Task 210. Project Management Task 240. Final Design / Issued for Bid Task 260. Advertisement and Bid Support Task -specific activities, associated assumptions and work products, and defined Deliverables are described in the following paragraphs. Overall assumptions are summarized at the end of this scope of work. PHASE 200 — PFAS Treatment Design TASK 210. Project Management. ENGINEER will perform project management duties to manage change, communicate effectively, coordinate internally and externally as needed, and proactively address issues with the CITY's Project Manager and others as necessary to make progress on the work described herein. The ENGINEER will perform the following tasks applicable to this PCM- 11 concurrent to the Amendment No. 2 project management activities but respective to the additional services described herein: 210.1. Project Management and Reporting • Lead, manage, and direct team activities. • Task and allocate team resources. • Communicate internally among team members. • Implement ENGINEER's quality assurance and quality control practices in performance of the defined scope of services. • Advise the CITY when the established project expectations cannot be met or when the engineering fee will increase as a change directive from the CITY for the scope of desired modifications. • Prepare and submit invoices monthly progress reports. • Update the design schedule as required in Attachment D of the Standard Agreement and according to the City of Fort Worth's Schedule Guidance Document. • Update ENGINEER's internal project management plan and quality management plan to guide the project team in execution of the project scope. Task Assumptions: • Status updates and meetings applicable to this scope will be conducted as defined in individual tasks of this PCM-11. City of Fort Worth, Texas Attachment A Page 3 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 Task Work Products: Monthly invoices, progress reports and schedule updates. TASK 240. Final Design / Issued for Bid As applicable to the design elements associated with this Amendment, ENGINEER will progress the Design, respective to the definition herein and per review comments provided by the CITY. 240.1. Final Design Package The Final Design Package will include the following as relative to this PCM-11 • Drawings: The drawings will include applicable updates from the 95% Design package as well as additional notes, layouts, dimensions, section cut and detail callouts with cross-references. • Technical Specifications — Update and develop technical specifications applicable to the design in CSI format. • Cost Estimate: ENGINEER will incorporate the design modifications into the opinion of cost estimate for Final Design will be an AACE Class 2 with an error range of -10% /+15%. • Facility Commissioning Framework: ENGINEER will incorporate the described modifications into the construction sequencing and commissioning plan concurrent with the Amendment No. 2 design. 240.2 Final Design Review Comments ENGINEER will provide the CITY with a draft version of the additional design elements described in this PCM-11 for their review and comment. Based on their comments, a final design will be incorporated with the overall design package. 240.3 Issued for Bid Following resolution of Final Design comments, ENGINEER incorporate the sealed design with the Issued for Bid package of the final design. Task Assumptions • Applicable design drawings and specifications defined herein will be integrated with the overall Amendment No. 2 design packages for transmittal to the CITY. • Review comments received on the Final Design package will be incorporated into the Issued for Bid package; resubmittal of a conformed Final Design Package is not included. • Production of the Issued for Bid package is limited to conforming the documents to address minor review comments from the Final Design review. Minor comments are expected to include correction to notations or similar minor clarifying changes. Modifications to layout, section, or details as reflected in the Final Design is not included. City of Fort Worth, Texas Attachment A Page 4 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 Task Work Products • Final Design Submittal Review Drawings, Technical Specifications, Lists, and Cost Estimate (AACE Class 2) • Issued for Bid (IFB) Package (Drawings and Technical Specifications), sealed by Texas -licensed professional engineer TASK 260. Advertisement and Bid Support ENGINEER will support the CITY in advertising the bid documents for selection of a contractor to construct the facilities and infrastructure defined in this PCM-11 and Amendment No. 2 as an integral project. For the scope of work defined herein, ENGINEER will provide the following services: 260.1. Advertisement and Bidding • Prepare/assemble bid package for solicitation for firm bids, including appropriate procurement documents and example contract • Receive, review and respond to contractor questions via addenda. Task Assumptions • Construction will be competitively bid; the ENGINEER will serve as the primary point of contact for questions. Task Work Products • Responses to bidder questions • Addenda SCOPE OF WORK ASSUMPTIONS In the development of this scope of work and associated task budgets defined in "Attachment B", ENGINEER has made the following governing assumptions: • Deliverables (draft and final) will be submitted in electronic/digital (PDF) format for CITY review and record. Paper submittals will not be required for any deliverables. • CITY will complete document reviews within five business days of submission. Review comments will be compiled/logged within a single (PDF) document or compiled into a spreadsheet file (Excel) and returned to the ENGINEER for documentation of responses and tracking of completion. • ENGINEER provision of forensic engineering or retained expert services is excluded from this scope of work. In the event ENGINEER is subsequently requested by CITY or others to provide documents or testimony regarding this scope of work, those additional services will be negotiated via change management pursuant to the rates and costs reflected in this Agreement, as may be amended in the future. • Adjustments to the design will be considered as project progresses and/or if regulatory aspects of the project evolve. If modifications are proposed, the City of Fort Worth, Texas Attachment A Page 5 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-11 CHEMICAL AND XFER PIPE MODIFICATIONS CITY PROJECT NO.: 104942 ENGINEER will identify them as early as possible for discussion with and consideration by the CITY's project manager. Final Design Engineering Assumptions: • Site investigations and activities during site visits do not include formal condition assessments of assets and will be limited to the identification of apparent issues. If conditions are identified that warrant additional investigation or a condition assessment, ENGINEER will suggest the additional services. Submittal Documents and Review Procedures. • Submittals will be delivered as defined herein. Project Delivery Approach and Schedule: • Project completion within the defined PCM-11 schedule does not otherwise guarantee the schedule for construction and start-up of the GAC Process. End of `Attachment A' City of Fort Worth, Texas Attachment A Page 6 of 5 (�o4 _ z / 2k� 2«j - wc= % E§§ m k C \ MLU LLLJ J 7§ ®�$ a < _j § )°\ � |m■ /) ) ,k/� kk!¥ / 2 ! $ H ., §� — //\ CO \ �k � �\ $t# �! a - , �m +S ! � } e m . \ - \ \\: 5 / �! �!- - _ \ \ !ƒ] April 15, 2026 EBrnANa .well Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study CPN-104942 Proposed Change No. 12- Phase 3 Pilot Operations (Rev1) Dear Matt: The work defined via Amendment No. 2 - PFAS Treatment System Design (CPN- 104942) included services to develop and oversee a demonstration pilot for validation of GAC performance for PFAS removal. This effort included a two-phase effort to fulfill TCEQ requirements and verify treatment performance. This PCM-12 defines additional pilot efforts to evaluate and confirm operational condi- tions relevant to the GAC process design and operations. Specifically, the Phase III pilot effort will evaluate the preferred GAC media in two gradations respective to hydraulic conditions and backwash operations. Primary objective of this effort is to validate ability to maintain a consistent clean -bed media hydraulic operational condition with a pre- scribed backwash operation. Per our prior discussions, BC has proceeded to initiate these efforts considerate of the overall project schedule, and we would request your concurrence with this proposed contract change. Formal documentation of the contract change via amendment will be subsequently submitted aggregate to pending proposed change modifications (PCMs). Please advise if any questions or additional information is required for review of this pro- posal. Very truly yours, Chad Bartruff, P.E. ect Manager Brown and Caldwell cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell ATTACHMENT B PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 PFAS PILOT PHASE 3 OPERATIONS CITY PROJECT NO.: 104942 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM NO. 12 PFAS PILOT PHASE 3 OPERATIONS CITY PROJECT NO.: 104942 The scope set forth herein defines the additional work to be performed by the ENGINEER for additional evaluation of the planned design and associated operations relevant to the overall project completion. Both the CITY and ENGINEER have attempted to clearly define the work to be performed and address the needs of the Project. PROJECT DEFINITION AND BACKGROUND The Amendment No. 2, Task 2 — TCEQ Pilot Study scope, defined the original plan for execution and evaluation of a demonstration pilot to validate performance of GAC as a primary treatment mechanism for the removal of PFAS. This was proposed as a two-phase pilot program: • Phase I - TCEQ pilot testing requirements for innovative/alternative treatment processes specified in TCEQ regulation 30 TAC 290.42 (g) for a duration of 90-days. • Phase II — Evaluation of PFAS treatment performance. The pilot system will be operated for a total duration of 12-months to observe PFAS breakthrough in the pilot columns. The Phase I TCEQ pilot report was submitted for their regulatory review. Phase II efforts are on -going, but were paused due to a required South Holly WTP maintenance shut -down (November 1, 2025 and a --45 day duration). Water quality analyses and sampling were completed to date per the original plan, however additional sampling and quality assurance measures were implemented for the Phase I and Phase II sampling/analyses efforts due to determinations from the Task 270 NCP Compliance, Quality Assurance Project Plan and Analytical Data Validation definition and coordination with the City's outside legal counsel. Based on observations from the Phase I and Phase II efforts, additional piloting and operations are recommended to evaluate the preferred media in two gradation sizes relative to GAC hydraulics and backwash operations. The following scope of work defines that planned activities for this Phase III of the GAC pilot efforts. WORK TO BE PERFORMED This PCM No. 12 will be executed as defined by the following primary tasks over a 5-month design duration (February — June 2026). Task 1. Project Management Task 2. Pilot Study City of Fort Worth, Texas Attachment B PMO Release Date: 07.23.2012 Page 1 of 1 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 Task -specific activities, associated assumptions and work products, and defined Project deliverables are described in the following paragraphs. Overall Project assumptions are summarized at the end of this scope of work. Execution of the work described herein will be dependent upon confirmation of City's agreement with the proposed piloting plan. It is assumed that pilot operation will be restarted February 2026. TASK 1. Project Management. ENGINEER will perform project management duties to manage change, communicate effectively, coordinate internally and externally as needed, and proactively address issues with the CITY's Project Manager and others as necessary to make progress on the work. The ENGINEER will perform the following tasks: 1.1. Project Management and Reporting • Lead, manage, and direct team activities. • Task and allocate team resources. • Communicate internally among team members. • Implement ENGINEER's quality assurance and quality control practices in performance of the defined scope of services. • Advise the CITY when the established project expectations cannot be met or when the engineering fee will increase as a change directive from the CITY for the scope of desired modifications. • Prepare and submit invoices monthly progress reports (5 months) in the format requested by the CITY. • Update Project Schedule as required in the Standard Agreement and according to the City of Fort Worth's Schedule Guidance Document. • Utilize ENGINEER's existing internal project management plan and quality management plan to guide the project team in execution of the project scope. 1.2 Project Meetings • Project Meetings — Conduct a bi-weekly update as to pilot progression and findings from the defined Phase III pilot protocol. Task Assumptions: • Project Meetings will be conducted virtually and include 2 ENGINEER team members (PM, Design/Pilot Manager). City of Fort Worth, Texas Attachment A Page 2 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 Task Work Products: • Monthly invoices, progress reports and schedule updates. • Meeting summaries with action item and decision logs. TASK 2. TCEQ Pilot Study ENGINEER will continue oversight, management and operation of the on -going demonstration pilot. The previously defined two-phase pilot program will be extended to include Phase III as defined herein and which will include two specific evaluations • Phase III(A) - Evaluation of headloss and backwash operations associated with restoring headloss through the GAC media following 12-months of pilot operation. o Evaluate GAC performance on process restart, following extended shutdown. o Assess operational headloss and evaluate washwater operations to restore pre -shutdown operational conditions. • Phase III(B) - Evaluation of hydraulic and PFAS treatment performance of an alternative sized, virgin, GAC media. o Evaluate GAC performance of virgin F300 and F400, side by side o Assess hydraulic characteristics of different sized GAC media o Operate, sample, and perform similar to the Phase I protocol. The Phase III work will include execution of the following scope elements to plan and execute these evaluations. 2.1. Pilot System Procurement ENGINEER will coordinate with the pilot system vendor to define cost to extend the pilot system rental period. This information will be summarized and transmitted to CITY with ENGINEER'S recommendations for execution. ENGINEER will utilize the existing ancillary pilot equipment. 2.2 TCEQ Coordination ENGINEER has allocated 8-hours for coordination or correspondence with TCEQ if the Phase III findings require follow-up discussion relative to the submitted Phase I Pilot Report. 2.3 Pilot Procurement ENGINEER has allocated 12 hours for pilot procurement coordination with Calgon, including extension of the rental agreement and maintenance of procurement agreement. 2.4 Pilot Operations Support • ENGINEER will serve as overall pilot manager, responsible for operational oversight to achieve pilot goals and objectives. City of Fort Worth, Texas Attachment A Page 3 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 • ENGINEER will coordinate pilot sampling schedule, including setup of contract with external laboratory for water quality analysis and coordination of all sample containers. • ENGINEER will update standard operational procedures for pilot operation, pilot system recording, and sample collection as applicable to the Phase III operational protocol. • ENGINEER will perform pilot sample collection and shipment to appropriate laboratory for all external laboratory samples. ENGINEER is responsible for payment of all third -party laboratory costs based on the analytical efforts and frequency as identified in Table 1 — Sampling Matrix. TABLE 1- Sampling Matrix Parameter Method Sampling Frequency TDS SM 2540C Biweekly (8 times) Alkalinity SM 2320B Biweekly (8 times) Bromide EPA 300 Biweekly (8 times) Chloride EPA 300 Biweekly (8 times) Sulfate EPA 300 Biweekly (8 times) DOC SM 5310C Biweekly (8 times) Hardness SM 2340B Biweekly (8 times) PFAS EPA 533 Biweekly (8 times) TOC SM 5310C Biweekly (8 times) UV254 SM 5910B Biweekly (8 times) Ammonia EPA 530.1 Monthly (3 times) Asbestos EPA 100.2 Monthly (3 times) Carbamate Pesticides EPA 531.2 Monthly (3 times) Color SM 2120B Monthly (3 times) Cyanide EPA 335.4 Monthly (3 times) Dioxin EPA 1613B Monthly (3 times) Diquat EPA 549.2 Monthly (3 times) Endothall EPA 548.1 Monthly (3 times) Fluoride SM 4500 F C Monthly (3 times) HAAS EPA 552.2 Monthly (3 times) Herbicides EPA 515.3 Monthly (3 times) Hydrogen Sulfide SM4500 S2 H Monthly (3 times) MBAS SM 5540C Monthly (3 times) Metals Suite (504.1/505/547) Monthly (3 times) Nitrate EPA 353.2 Monthly (3 times) Nitrite EPA 353.2 Monthly (3 times) Odor SM 2150B Monthly (3 times) Organochlorine Pesticides/PCBs Suite (245.1/200.7/200.8) Monthly (3 times) sVOCs EPA 525.2 Monthly (3 times) VOCs EPA 524.2 Monthly (3 times) Sulfide SM 4500 S2 D Monthly (3 times) Taste and Odor V210 Monthly (3 times) Trihalomethanes EPA 524.2 Monthly (3 times) • Additional sampling will be conducted at time of pilot restart including multiple samples for PFAS and arsenic. And, throughout operation of the pilot PFAS City of Fort Worth, Texas Attachment A Page 4 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 duplicates and matrix spike (MS) / matrix spike duplicates (MSD samples will be collected as noted in Task 7. • ENGINEER will perform regular checks of pilot operations and performance. The pilot manager will conduct weekly visits associated with Phase III(A) to check hydraulic performance and test various media disinfection methods, as necessary. The pilot manager will also conduct weekly visits associated with performance testing and documentation for Phase III(B). • CITY will supporting pilot demobilization including: transporting pilot skid from pilot location (South Holly filter gallery). • CITY will assist with daily operation and monitoring of the pilot system including: documentation of operational settings, manual adjustments to pump and rotameter settings to maintain column flow rates, and collecting field grab samples (pH, conductivity, temperature, turbidity). • Additionally, depending on the initial findings from Phase III(A), ENGINEER will coordinate with the CITY for their supply of treatment chemical (e.g. sodium hypochlorite, sodium hydroxide) and assistance in chemical handling if needed for GAC media disinfection. 2.5 Pilot Report • At the conclusion of Phase III pilot testing, the ENGINEER will incorporate findings from Phase III into the draft CITY pilot study report, previously composed of results from Phase I and Phase II of pilot testing. • The CITY pilot study report will be submitted for CITY review. Following CITY review, ENGINEER will update the report and submit a final version to the CITY. Task Assumptions • CITY will be the primary point of contact and responsible for FWWD execution and staff assignments, including daily operations and logging of conditions as well as completing sampling and analysis for field conditions. • ENGINEER's previously developed project -specific field work safety plan, applicable to the work described herein as to be conducted by their personnel and respective to the CITY's site -specific facility safety plans, will be updated as appropriate. • ENGINEER will complete sampling; all samples will be submitted for external laboratory analysis. • US EPA Method 533 will be used for any of the PFAS compound analyses in drinking water. Data validation will be performed as part of Task 7. • Pilot equipment leased from Calgon Carbon Corporation, who oversaw installation and commissioning of the pilot, will continue to provide technical support during operations. • Data collected during pilot testing will be suitable to meet expectations for approval by TCEQ. City of Fort Worth, Texas Attachment A Page 5 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 • Pilot Testing is anticipated to occur over a period of 100 days. Task Work Products • Quotations for lease extension of pilot equipment (Calgon Carbon Corporation). • CITY Pilot Test Report (Draft / Final for CITY) TASK 7. NCP Compliance ENGINEER will complete activities relative to the project design as required to maintain substantial compliance with National Contingency Plan (NCP) requirements for the assessment of PFAS impacts on the CITY's drinking water supply system and as defined in the previously developed Quality Assurance Project Plan (QAPP). The services shall include the following Tasks: 7.1 Not Used 7.2 Execution of Quality Assurance Project Plan and Analytical Data Validation ENGINEER will adhere to the previously developed QAPP in accordance with EPA QA/G-5, "Guidance for Quality Assurance Plans", to define testing and quality assurance requirements for PFAS sampling of the City of Forth Worth's drinking water supply system. The QAPP was developed as a stand-alone document relative to the data collected for completion of the Task 2 — Pilot Study, Task 7.1 - Preliminary Assessment, Task 7.3 — Focused Feasibility Study. For this PCM No. 12, the Engineer will: • Continue to review and perform a Level 2 data validation on PFAS data collected by the City of Forth Worth from its drinking water supply system to assess and document the useability of those data. • Perform level 2 data valization for all pilot and source water quality monitoring data collected by the ENGINEER used to inform the pilot study design. Level 2 data validation will include review of the following: • Data completeness and chain of custody • Case narratives and lab qualifiers • Preservation and hold times • Method reporting limits and method detection limits • Method blanks and field blank contamination • Method surrogate recoveries • Laboratory control sample recoveries (LCS/LCSD) • Matric spike and matrix spike duplicate samples (MS/MSD) • Lab duplicates City of Fort Worth, Texas Attachment A Page 6 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-12 - PFAS PILOT ADDITIONAL OPERATIONS CITY PROJECT NO.: 104942 Field duplicate comparison SCOPE OF WORK ASSUMPTIONS In the development of this scope of work and associated task budgets defined in "Attachment B", ENGINEER has made the following governing assumptions: • Schedule, relative to the stated time for restart of pilot operations, will be: • Overall pilot restart preparations, late -December 2025. • Start of the Phase III(B) 90-day study period February 2026 • End of the Phase III(B) 90-day study period May 2026 • Deliverables (draft and final) will be submitted in electronic/digital (PDF) format for CITY review and record. Paper submittals will not be required for any deliverables. • CITY will complete document reviews within five business days of submission. Review comments will be compiled/logged within a single (PDF) document or compiled into a spreadsheet file (Excel) and returned to the ENGINEER for documentation of responses and tracking of completion. • ENGINEER will document meeting/workshop notes and Project action items and decisions for Project records for identified meetings and workshops. Notes will be summaries of meetings/workshops and key points and shall not be considered verbatim documentation of meeting discussions. • ENGINEER provision of forensic engineering or retained expert services is excluded from this scope of work. In the event ENGINEER is subsequently requested by CITY or others to provide documents or testimony regarding this scope of work, those additional services will be negotiated via change management pursuant to the rates and costs reflected in this Agreement, as may be amended in the future. • Adjustments to the design will be considered as project progresses and/or if regulatory aspects of the project evolve. If modifications are proposed, the ENGINEER will identify them as early as possible for discussion of change management with and consideration by the CITY's project manager. End of `Attachment A' City of Fort Worth, Texas Attachment A Page 7 of 7 Z w 2 U H F- a Ids O LL U) w U w U) Z W w Z Z w J Q z O U) co w LL O w a vI Z O N w a r NO O cep Z Ow Z fn Q U _ � a a� w O a J cn U Q LL IL EBrnAND well April 15, 2026 Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study CPN-104942 Proposed Change No. 13- TWPS, Horizontal -Split Case Evaluation (Rev1) Dear Matt: Preliminary engineering to develop the basis of design for integration of a PFAS treat- ment process at the Holly WTPs was initiated as part of Amendment No. 1(June 2024). Biweekly meetings to review progression of the basis of design were conducted through- out the project to provide FWWD opportunity to review and comment on design progres- sion and engineering recommendations and to confirm design decisions in effort to ex- pedite design definition. During the draft preliminary engineering review meeting in December 13, 2024 BC presented the developed basis of design for the PFAS improve- ments. The Treated Water Pump Station (TWPS) basis of design and BIM model had been devel- oped as a vertical turbine pump (VTP) station using a wetwell to supply the pump can in- takes. This configuration was selected early in the basis of design development due to hydraulic and site considerations and limitations, and it was subsequently reviewed with FWWD and advanced with design concept development during the preliminary engineer- ing efforts. During the December review meeting FWWD staff advised that it was their preference to utilize horizontal split case (HSC) pumps in lieu of VTPs due to operation and maintenance considerations. FWWD requested that BC revisit a HSC configuration. Subsequent to the review meeting BC proceeded to re-examine configuration of the TWPS using HSC pumps and the primary efforts included the following: • Preliminary identification of viable HSC pump selections (treated water pumps and wash water pumps) and pumping unit combinations comparable to the se- lected VTP units and estimated system hydraulics. • Communications with select HSC vendors to validate custom candidate selec- tions and operational ranges and limitations, and to confirm numbers of pump- ing units. • Verification of physical specifications, dimensional characteristics, power re- quirements, and preliminary suction requirements (NPSH). • Development of plan layouts consideration of physical characteristics, piping lay- outs, Hydraulic Institute standards. • Review of integration plan with developed GAC process and electrical room lay- outs. • Conceptual development of site plan layouts relative to existing site conditions and utilities. • Developed a conceptual cost comparison of the pumping units and building and site development modifications. pcm-13 twps hsc eval Matt Kusnir, PE Fort Worth Water Department April 15, 2026 Page 2 BC summarized the draft findings from this evaluation and reviewed them with FWWD in the March 11, 2025 Design Coordination Meeting. In summary, the HSC configuration was determined to have a greater cost due to increased building footprint, greater pump costs, need for material handling equipment, and relocation of site utilities. Based on these draft findings, FWWD advised that the design should proceed with a VTP configu- ration. The effort to evaluate a potential change to an HSC configuration were identified at that time as additional efforts due to prior discussion of the VTP configuration and subse- quent design progression of those efforts. We would request your concurrence with this proposed contract change for completion of these work activities. Formal documenta- tion of the contract change via an amendment will be subsequently submitted along with other pending proposed change modifications (PCMs). Please advise if any questions or additional information is required for review of this pro- posa I. Very truly yours, Brown and Caldwell Chad Bartruff,P.E. ject Manager cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell pcm-13 twps hsc eval N � c CB � Q 0 y W C9 > d cu N i 3: o .� C >>i L 6) CO U — (D LL Q d Q 0 a� m f6 � tCL U 0 uo Q � W o CL U- d 0 Y U ,N a a U .o d d Go N fA � f n ti I� ti -� op c� m Z U J y � O c U U Q co ~ N - U w O a = a N t� N Q1 C O = W N to N '00 U N ti N O a d m Qj o ti m c0 w U U V = c � 3 � a y ,- O L U M ai U a o � Y- In ~ L a � a Brown ANa April 16, 2026 Caldwell Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study (CPN-104942) PCM No. 14- GAC Gallery Elevation Adjustment Dear Matt: In follow-up to our prior conversations, we are submitting this PCM-14 regarding specific design modifications identified for the subject project. Please refer to Attachment A for description of the planned scope and Attachment B for the respective efforts to com- plete this work. Please advise if any questions or additional information is required for review of this pro- posa I. Very truly yours, Brown and Caldwell cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell Brandy Martinez, Brown and Caldwell ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-14 GAC GALLERY ELEVATION ADJUSTMENT CITY PROJECT NO.: 104942 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-14 HOLLY WATER TREATMENT PLANTS GAC GALLERY ELEVATION ADJUSTMENT CITY PROJECT NO.: 104942 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. PROJECT DEFINITION AND BACKGROUND Amendment No. 2 — Holly Water Treatment Facility PFAS Treatment Design (CPN-104942) included support of the CITY's Project Manager relative to CITY building code coordination. As part of the allocated services, the ENGINEER participated in a pre -development conference (PDC) with the Project Manager to confirm project design permitting requirements that were not specifically defined at the time of Amendment No. 2 scope definition. Information communicated to the Project Manager and the ENGINEER during the PDC identified governing stormwater code requirements respective to the Project, including code - defined flood areas (FEMA and CITY) in addition to estimated potential high-water areas (PHWA), which are defined as `advisory' conditions. The PDC information confirmed that the Project site does not include code -defined flood areas, however the CITY identifies PHWAs on the Project site. From subsequent design review of this information with CITY staff, it was requested that the ENGINEER design facilities to position potentially vulnerable assets (electrical and instrumentation equipment) at elevations above the elevation defined by the 100-year PHWAs. Based on this direction, the ENGINEER will implement design modifications to position potentially vulnerable assets within the GAC Facility process pipe gallery at or above the CITY's estimated PHWA (EL 543). Primary efforts to implement this modification include adjusting elevations of assets and raising the gallery floor by approximately 18" to maintain accessibility for operation and maintenance. This PCM-14 defines the engineering services for execution of these design tasks. This scope of work defines the tasks to develop biddable construction documents (design -bid - build) concurrent with the Amendment No. 2 design efforts. The CITY has advised that advertisement for the Holly Water Treatment Facility PFAS Treatment Design will occur no earlier than January 2027. The ENGINEER and CITY Project Manager will coordinate Project execution schedule respective to this timeline. CITY of Fort Worth, Texas Attachment A PMO Release Date: 09.23.2012 Page 1 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-14 GAC GALLERY ELEVATION ADJUSTMENT CITY PROJECT NO.: 104942 WORK TO BE PERFORMED This PCM-14 will be executed concurrent with Amendment No. 2 - SHWTP PFAS Treatment Design as defined by the following primary tasks. Phase 200 — PFAS Treatment Design Task 210. Project Management Task 240. Final Design / Issued for Bid Task -specific activities, associated assumptions and work products, and defined Deliverables are described in the following paragraphs. Overall assumptions are summarized at the end of this scope of work. PHASE 200 — PFAS Treatment Design TASK 210. Project Management. ENGINEER will perform project management duties to manage change, communicate effectively, coordinate internally and externally as needed, and proactively address issues with the CITY's Project Manager and others as necessary to make progress on the work described herein. The ENGINEER will perform the following tasks applicable to this PCM concurrent to the Amendment No. 2 project management activities but respective to the additional services described herein: 210.1. Project Management and Reporting • Lead, manage, and direct team activities. • Task and allocate team resources. • Communicate internally among team members. • Implement ENGINEER's quality assurance and quality control practices in performance of the defined scope of services. • Advise the CITY when the established project expectations cannot be met or when the engineering fee will increase as a change directive from the CITY for the scope of desired modifications. • Prepare and submit invoices monthly progress reports. • Update the design schedule as required in Attachment D of the Standard Agreement and according to the CITY of Fort Worth's Schedule Guidance Document. • Update ENGINEER's internal project management plan and quality management plan to guide the project team in execution of the project scope. Task Assumptions: • Status updates and meetings applicable to this scope will be conducted as defined in individual tasks of this PCM. • Five additional project management coordination meetings are assumed. CITY of Fort Worth, Texas Attachment A Page 2 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-14 GAC GALLERY ELEVATION ADJUSTMENT CITY PROJECT NO.: 104942 Task Work Products: • Monthly invoices, progress reports and schedule updates. TASK 240. Final Design / Issued for Bid As applicable to the design elements associated with this Amendment, ENGINEER will progress the Design, respective to the definition herein and per review comments provided by the CITY. 240.1. Final Design Package The Final Design Package will include the following as relative to this PCM • Drawings: The drawings will include applicable updates from the 95% Design package as well as additional notes, layouts, dimensions, section cut and detail callouts with cross-references. • Technical Specifications — Update and develop technical specifications applicable to the design in CSI format. • Cost Estimate: ENGINEER will incorporate the design modifications into the opinion of cost estimate for Final Design will be an AACE Class 2 with an error range of -10% /+15%. 240.2 Final Design Review Comments ENGINEER will review with the CITY a draft version of the design modifications described in this PCM for their review and comment. Based on their comments, a final design will be incorporated with the overall design package. 240.3 Issued for Bid Following resolution of Final Design comments, ENGINEER incorporate the sealed design with the Issued for Bid package of the final design. Task Assumptions • Applicable design drawings and specifications defined herein will be integrated with the overall Amendment No. 2 design packages for transmittal to the CITY. • Review comments received on the Final Design package will be incorporated into the Issued for Bid package; resubmittal of a conformed Final Design Package is not included. • Production of the Issued for Bid package is limited to conforming the documents to address minor review comments from the Final Design review. Minor comments are expected to include correction to notations or similar minor clarifying changes. Modifications to layout, section, or details as reflected in the Final Design is not included. Task Work Products • Final Design Submittal Review Drawings, Technical Specifications, Lists, and Cost Estimate (AACE Class 2) CITY of Fort Worth, Texas Attachment A Page 3 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-14 GAC GALLERY ELEVATION ADJUSTMENT CITY PROJECT NO.: 104942 • Issued for Bid (IFB) Package (Drawings and Technical Specifications), sealed by Texas -licensed professional engineer SCOPE OF WORK ASSUMPTIONS In the development of this scope of work and associated task budgets defined in "Attachment B", ENGINEER has made the following governing assumptions: • Assumptions identified in the prior scopes of work for the Holly WTP facility PFAS design, defined in Amendments No. 2, No. 3 and No. 4, apply unless otherwise modified or restated in this PCM. • Deliverables (draft and final) will be submitted in electronic/digital (PDF) format for CITY review and record. Paper submittals will not be required for any deliverables. • CITY will complete document reviews within five business days of submission. Review comments will be compiled/logged within a single (PDF) document or compiled into a spreadsheet file (Excel) and returned to the ENGINEER for documentation of responses and tracking of completion. • ENGINEER provision of forensic engineering or retained expert services is excluded from this scope of work. In the event ENGINEER is subsequently requested by CITY or others to provide documents or testimony regarding this scope of work, those additional services will be negotiated via change management pursuant to the rates and costs reflected in this Agreement, as may be amended in the future. • Adjustments to the design will be considered as project progresses and/or if regulatory aspects of the project evolve. If modifications are proposed, the ENGINEER will identify them as early as possible for discussion with and consideration by the CITY's project manager. Final Design Engineering Assumptions: • Site investigations and activities during site visits do not include formal condition assessments of assets and will be limited to the identification of apparent issues. If conditions are identified that warrant additional investigation or a condition assessment, ENGINEER will suggest the additional services. Submittal Documents and Review Procedures. • Submittals will be delivered as defined herein. Project Delivery Approach and Schedule: • Project completion within the Project schedule identified in this PCM does not otherwise guarantee the schedule for construction and start-up of the GAC Process. End of `Attachment A' CITY of Fort Worth, Texas Attachment A Page 4 of 5 m w f a W � = a sooaa Z'3 c w� goc� w� og n g LL � CO C/) W W z U ZF aU) IL D LU z Q U wz z v FO Z U F> U d J LLJ z Ww w w�J Q W Z J Cl) J Q i� 1p = U Brown ANa April 16, 2026 Caldwell Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study (CPN-104942) PCM No. 15- TWPS Hydraulic Adjustment Dear Matt: In follow-up to our prior conversations, we are submitting this PCM-15 regarding specific design modifications identified for the subject project. Please refer to Attachment A for description of the planned scope and Attachment B for the respective efforts to com- plete this work. Please advise if any questions or additional information is required for review of this pro- posal. Very truly yours, Brown and Caldwell cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell Brandy Martinez, Brown and Caldwell ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 TWPS HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 HOLLY WATER TREATMENT FACILITY TREATED WATER PUMP STATION HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 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. PROJECT DEFINITION AND BACKGROUND Amendment No. 2 — Holly Water Treatment Facility PFAS Treatment Design (CPN-104942) included tasks to confirm preliminary design concepts for the GAC process and Treated Water Pump Station (TWPS). These tasks included pilot testing to evaluate the proposed GAC media and physical modeling for the TWPS preliminary layout, which affect the hydraulic design conditions for these process facilities. Due to the original accelerated project schedule, the pilot testing and physical modeling tasks were performed concurrent with design development through the 75% design milestone. ORFI-020 was submitted to summarize findings and design impacts identified from the GAC pilot testing and TWPS physical modeling, with the primary considerations being: • GAC operational conditions were impacted by expected biological growth, increasing head loss through the media requiring frequent backwashing at design loading rates. • TWPS suction configuration required reduction of the design wet well operating range due to possible air entrainment. Due to the observed pilot headloss conditions and the reduction of TWPS operating range per the physical model findings, an adjustment of the GAC contactor and TWPS hydraulic configuration was proposed to increase available total driving head for the GAC gravity contactor operation and to expand operating range for the installed pumps. The following recommendations were reviewed with CITY staff to confirm concurrence. • TWPS Inlet Weir o Modification ■ Lower from EL 555.0 to EL 550.0 ■ Maintain inlet weir plate and trough for flow distribution. Benefits ■ Proportionally increase GAC Contactor total driving head. ■ Enhance contactor run-time between backwash operations. City of Fort Worth, Texas Attachment A PMO Release Date: 09.23.2012 Page 1 of 6 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 TWPS HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 TWPS Suction o Modifications ■ Modify pump inlets from tee -head configuration to traditional below - grade pump can configuration. ■ Exclude isolation valves on individual pump suction piping. ■ Incorporate a suction inlet trench o Benefits ■ Increase design operating range from the reduced 4 feet to approximately 8 feet ■ Expand pump VFD operational control range. The TWPS suction configuration modifications identified in ORFI-020 were discussed among the ENGINEER's design team inclusive of Verdantas, who performed the original TWPS physical model. The modified configuration is viewed as feasible with implementation of pump suction / pump can configuration recommendations similar to those described in the original TWPS physical model, adherence to Hydraulic Institute pump can velocity limitations, and maintaining the estimated wet well operating level identified in ORFI- 020. The proposed minimum wet well operating level can be verified via an update to the physical model. Per the CITY's request, additional physical modeling is not included in this PCM. The design intent will be to field verify and adjust the minimum operating level at start-up and commissioning to confirm operational control levels and if needed implement mitigative measures to address potential hydraulic issues if observed. This PCM defines the engineering services for execution of these design tasks. This scope of work defines the tasks to develop biddable construction documents (design -bid -build) concurrent with the Amendment No. 2 design efforts. The CITY has advised that advertisement for the Holly Water Treatment Facility PFAS Treatment Design will occur no earlier than January 2027. The ENGINEER and City Project Manager will coordinate Project execution schedule respective to this timeline. WORK TO BE PERFORMED This PCM-15 — TWPS Hydraulic Adjustment will be executed concurrent with Amendment No. 2 - SHWTP PFAS Treatment Design as defined by the following primary tasks. Phase 200 — PFAS Treatment Design Task 210. Project Management Task 240. Final Design / Issued for Bid Task -specific activities, associated assumptions and work products, and defined deliverables are described in the following paragraphs. Overall assumptions are summarized at the end of this scope of work. PHASE 200 — PFAS Treatment Design TASK 210. Project Management. ENGINEER will perform project management duties to manage change, communicate effectively, coordinate internally and externally as needed, and proactively address issues City of Fort Worth, Texas Attachment A Page 2 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 TWPS HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 with the CITY's Project Manager and others as necessary to make progress on the work described herein. The ENGINEER will perform the following tasks applicable to this PCM- 15 concurrent to the Amendment No. 2 project management activities but respective to the additional services described herein: 210.1. Project Management and Reporting • Lead, manage, and direct team activities. • Task and allocate team resources. • Communicate internally among team members. • Implement ENGINEER's quality assurance and quality control practices in performance of the defined scope of services. • Advise the CITY when the established project expectations cannot be met or when the engineering fee will increase as a change directive from the CITY for the scope of desired modifications. • Prepare and submit invoices monthly progress reports. • Update the design schedule as required in Attachment D of the Standard Agreement and according to the City of Fort Worth's Schedule Guidance Document. • Update ENGINEER's internal project management plan and quality management plan to guide the project team in execution of the project scope. Task Assumptions: • Status updates and meetings applicable to this scope will be conducted as defined in individual tasks of this PCM. • Three additional project management coordination meetings are assumed. Task Work Products: • Monthly invoices, progress reports and schedule updates. TASK 240. Final Design / Issued for Bid As applicable to the design elements associated with this PCM, ENGINEER will progress the design, respective to the definition herein and per review comments provided by the CITY. 240.1. Final Design Package The Final Design Package will include the following as relative to this PCM • Drawings: The drawings will include applicable updates from the 95% Design package as well as additional notes, layouts, dimensions, section cut and detail callouts with cross-references. • Technical Specifications — Update and develop technical specifications applicable to the design in CSI format. City of Fort Worth, Texas Attachment A Page 3 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 TWPS HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 • Cost Estimate: ENGINEER will incorporate the design modifications into the opinion of cost estimate for Final Design will be an AACE Class 2 with an error range of -10% /+15%. 240.2 Final Design Review Comments ENGINEER will review with the CITY a draft version of the design modifications described in this PCM for their review and comment. Based on their comments, a final design will be incorporated with the overall design package. 240.3 Issued for Bid Following resolution of Final Design comments, ENGINEER incorporate the sealed design with the Issued for Bid package of the final design. Task Assumptions • Applicable design drawings and specifications defined herein will be integrated with the overall Amendment No. 2 design packages for transmittal to the CITY. Review comments received on the Final Design package will be incorporated into the Issued for Bid package; resubmittal of a conformed Final Design Package is not included. • Production of the Issued for Bid package is limited to conforming the documents to address minor review comments from the Final Design review. Minor comments are expected to include correction to notations or similar minor clarifying changes. Modifications to layout, section, or details as reflected in the Final Design is not included. Task Work Products • Final Design Submittal Review Drawings, Technical Specifications, Lists, and Cost Estimate (AACE Class 2) • Issued for Bid (IFB) Package (Drawings and Technical Specifications), sealed by Texas -licensed professional engineer SCOPE OF WORK ASSUMPTIONS In the development of this scope of work and associated task budgets defined in "Attachment B", ENGINEER has made the following governing assumptions: • Assumptions identified in the prior scopes of work for the Holly WTP facility PFAS design, defined in Amendments No. 2, No. 3 and No. 4, apply unless otherwise modified or restated in this PCM. • Deliverables (draft and final) will be submitted in electronic/digital (PDF) format for CITY review and record. Paper submittals will not be required for any deliverables. • CITY will complete document reviews within five business days of submission. Review comments will be compiled/logged within a single (PDF) document or compiled into a spreadsheet file (Excel) and returned to the ENGINEER for documentation of responses and tracking of completion. City of Fort Worth, Texas Attachment A Page 4 of 5 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-15 TWPS HYDRAULIC ADJUSTMENT CITY PROJECT NO.: 104942 • ENGINEER provision of forensic engineering or retained expert services is excluded from this scope of work. In the event ENGINEER is subsequently requested by CITY or others to provide documents or testimony regarding this scope of work, those additional services will be negotiated via change management pursuant to the rates and costs reflected in this Agreement, as may be amended in the future. • Adjustments to the design will be considered as project progresses and/or if regulatory aspects of the project evolve. If modifications are proposed, the ENGINEER will identify them as early as possible for discussion with and consideration by the CITY's project manager. Final Design Engineering Assumptions: • Site investigations and activities during site visits do not include formal condition assessments of assets and will be limited to the identification of apparent issues. If conditions are identified that warrant additional investigation or a condition assessment, ENGINEER will suggest the additional services. Submittal Documents and Review Procedures. • Submittals will be delivered as defined herein. Project Delivery Approach and Schedule: • Project completion within the defined Project schedule identified in this PCM does not otherwise guarantee the schedule for construction and start-up of the GAC Process and TWPS. End of `Attachment A' City of Fort Worth, Texas Attachment A Page 5 of 5 )§kB - Cal tj 2k{ io \ e CO �) U 0 2 § o 2c w § � « 2 }]& !�, § / �� G |ƒ / w z aLLI §( a ` z �2 0 ` � o It \]| ff ) ( \\ d {\_ ( e - - � � April 15, 2026 EBrnANa.well Matt Kusnir, PE Fort Worth Water Department 100 Fort Worth Trail Fort Worth, TX 76102 Subject: Emerging Contaminants - PFAS Treatability Study (CPN-104942) PCM No. 16- SEL Leachate Treatability Study -Design Services for New Electri- cal Service and Ancillary Support Systems Dear Matt: Amendments No. 3 and No. 4 to the CPN-104942 scope of services defined efforts to evaluate, select, and design infrastructure for implementation of leachate treatment technology to manage PFAS concentrations in the City's Southeast Landfill leachate and leachate condensate. Those efforts in conjunction with subsequent FWWD, stakeholder, and vendor design discussions determined that treatment implementation will require additional infrastructure improvements and project coordination, specifically: • The original scope of services assumed that the existing utility power service and site infrastructure would be adequate for the planned treatment installation and that a PLC for remote monitoring would not be required. • Engineering evaluation of vendor treatment systems and the existing landfill sys- tems has determined that additional supporting infrastructure is required for the installation - additional tankage and pumping systems. • Design development and site evaluation performed to date and subsequently re- viewed with FWWD determined that the treatment installation will require a new electrical utility service and a PLC system for remote monitoring. • Parallel to this project, FWWD's work to implement a renewable natural gas (RNG) system at the landfill site identified several points of intersection between the two projects, which requires additional services to allow for appropriate col- laboration and coordination. This PCM defines changes to the Southeast Landfill scope of services to include the additional electrical and controls design; facilitate and manage development of a new electrical service package with the electrical provider (Oncor); and support ongoing coor- dination and collaboration with the RNG project. Attachment A describes the scope changes and Attachment B summarizes the proposed level of effort. Upon your review, we would request your concurrence with this proposed contract change. Formal documentation of the contract change via amendment will be subse- quently submitted aggregate to other pending proposed change modifications (PCMs). Please advise if any questions or additional information is required for review of this pro- posal. Very truly yours, Brown and Caldwell Chad Bartruff, P. oject Manager cc: Mary Moiso, Brown and Caldwell Chris Patin, Brown and Caldwell Tim White, Brown and Caldwell ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 DESIGN SERVICES FOR ELECTRICAL SERVICE AND ANCILLARY SUPPORT SYSTEMS CITY PROJECT NO.: 104942 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. PROJECT DEFINITION AND BACKGROUND Amendment No. 3 — Southeast Landfill Treatability Study (CPN-104942) included study and design of a new PFAS treatment system. Specifically, the scope was based on collecting data on the existing leachate management system, completing a technology evaluation, and then developing a design for a treatment system to be integrated into the landfill operations. Execution of the engineering scope resulted in additional services, including expansion of the characterization efforts and the need for additional supporting components for the PFAS treatment, including electrical, controls, and ancillary process systems. The project will also now require a new electrical service. Additionally, there is a parallel renewable natural gas (RNG) service project, which requires coordination to allow for appropriate site infrastructure development. Based on these determinations, the following additional services will be performed: • Additional Project Management Services due to extension of the project schedule, including: • 20 biweekly progress meetings were included in the original scope; an additional 10 progress meetings are expected to be required. • The target for completion of the project scope will be extended to August 2026 • Additional data processing and design basis development to include consideration for the impacts to leachate generation and PFAS concentrations resulting from disposal of Village Creek WRF biosolids at SE Landfill. • Increased vendor coordination efforts to obtain budgetary and technical information necessary to establish a recommended process configuration to allow for multiple bidders. • Expanded design scope to included: City of Fort Worth, Texas Attachment A PMO Release Date: 09.23.2012 Page 1 of 8 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 • Storage tanks and pumps upstream and downstream of the PFAS treatment system to integrate the treatment system with newly installed Republic Services infrastructure and facilitate FWWD operations and monitoring. • New primary power electrical service and power distribution center to support newly required components outside of the vendor treatment package. • Instrumentation and controls to align with FW standards and provide for remote system monitoring. The primary power service requires coordination with the power utility (Oncor) to define the service agreement and associated power requirements and installation plan. ENGINEER will support these efforts and coordinate the utility plan with the electrical design. In parallel to the PFAS project, the City has entered into a separate contract with a renewable natural gas (RNG) supplier, who will design and install an on -site system for beneficial use of the landfill gases. This system will be installed adjacent to the new PFAS system and has overlaps with civil aspects of the treatment design as well as the potential to influence both electrical and process design. To minimize the potential for conflicting scopes, ENGINEER will support FWWD and collaborate with the RNG supplier on points of interface between the two FWWD projects in order to facilitate designs that work conjunctively (to the extent possible) for the best interest of the City This PCM-16 defines the engineering services for execution of these tasks. This scope of work defines the tasks to develop biddable construction documents (design -bid -build) concurrent with the Amendment No. 3 design efforts. WORK TO BE PERFORMED This PCM-11 — Chemical Feed Modifications will be executed concurrent with Amendment No. 3 - Southeast Landfill Treatability Study. The additional scope will be defined by the following primary tasks. Phase 300 — Southeast Landfill PFAS Treatability Task 301. Project Management Task 302. Data Collection and Review Task 303. Treatment Alternatives Assessment and Bench Testing Task 307. Treatment System Design Task 308 (new). Oncor and RNG Coordination Task -specific activities, associated assumptions and work products, and defined Deliverables are described in the following paragraphs. Overall assumptions are summarized at the end of this scope of work. The original scope anticipated a 12 month overall project timeline, with conclusion originally anticipated in February 2026. This Amendment recognizes that the completion of scope has required more time than anticipated, and the target for completion of the scope of services is revised to add 6 months to the duration, with target completion of August 2026. City of Fort Worth, Texas Attachment A Page 2 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 PHASE 300 — Southeast Landfill PFAS Treatability TASK 301. Project Management. ENGINEER will perform project management duties to manage change, communicate effectively, coordinate internally and externally as needed, and proactively address issues with the CITY's Project Manager and others as necessary to make progress on the work described herein. The ENGINEER will perform the following tasks applicable to this PCM concurrent to the Amendment No. 3 and No. 4 project management activities but respective to the additional services described herein: 301. Project Management and Reporting • Lead, manage, and direct team activities. • Task and allocate team resources. • Communicate internally among team members. • Implement ENGINEER's quality assurance and quality control practices in performance of the defined scope of services. • Advise the CITY when the established project expectations cannot be met or when the engineering fee will increase as a change directive from the CITY for the scope of desired modifications. • Prepare and submit invoices monthly progress reports (6 additional invoices anticipated) • Continue biweekly project status meetings with the client (10 additional meetings anticipated) • Update the design schedule as required in Attachment D of the Standard Agreement and according to the City of Fort Worth's Schedule Guidance Document. • Update ENGINEER's internal project management plan and quality management plan to guide the project team in execution of the project scope. Task Assumptions: • No new PM assumptions have been identified. Task Work Products: • Monthly invoices, progress reports and schedule updates. TASK 302. Data Collection and Review ENGINEER will complete analysis of data from the Village Creek WRF to assess the potential contribution to leachate generation because of biosolids (both pellets and cake) disposal at the SE Landfill. The assessment will include determination of the potential increase in leachate generation rate as well as potential changes (increase or decrease) in the observed PFAS concentration in the leachate. City of Fort Worth, Texas Attachment A Page 3 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 Task Assumptions • Biosolids data including mass loading, moisture content, and PFAS content will be provided by the City; sampling and analysis of biosolids is not included. • Analysis will be based on current average leachate production and PFAS quality. • Rates of release of moisture and PFAS from biosolids will be based on available literature; study of the degradation of biosolids in a landfill environment is not included. Task Work Products • Updated calculations to estimate project leachate generation rate and quality TASK 303. Treatment Alternatives Assessment and Bench Testing Amendment No. 4 included definition of vendor services for bench -scale foam fractionation testing and preparation of quotations. Testing guidelines were developed based on available leachate characteristics and general elements related to foam fractionation processes with consideration of the identified vendor technology systems and operations. Bench testing allowed vendor -specific evaluation of the process requirements and their efforts to optimize process performance relative to their treatment technology for the Southeast Landfill leachate characteristics. The testing results and treatment recommendations/proposals from the individual vendors were process specific. Based on review of the vendor -specific efforts, ENGINEER will perform the following tasks to align data and process information for comparative evaluation of treatment processes: • Complete additional coordination with vendors to address variability in testing protocols and report assumptions • Address questions from vendor on budgetary proposals and provide direction to align quotations around consistent assumptions Task Assumptions • Vendors to be directed to provide testing, at a minimum, testing that demonstrates the effectiveness of their standard system without the use of additives or other chemical adjustments • Quotations should assume procurement by a general contractor (design/bid/build) that has been competitively selected by Fort Worth in alignment with Procurement rules. Design/Build/Operate, Operate -for -Fee, or Leased systems are not appropriate proposal conditions. Task Work Products • Conformed testing protocols • Conformed budgetary proposals City of Fort Worth, Texas Attachment A Page 4 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 TASK 307. Treatment System Design The original scope of services assumed the design concept would be: "...using foam fractionation as the primary technology. The foam fractionation equipment will be a modular design consolidated into a skid or container suited for installation on a concrete slab. Upstream and downstream storage will be provided by the existing SEL facilities." The operating protocols for the foam fractionation systems are semi -batch in nature, resulting in multiple start/stop operations for the feed pumps, which places an extra burden on Republic operations or requires upgrades to the feed pump controls. Additionally, the feed supply from the Republic holding tanks must be balanced to meet arsenic discharge requirements. These two conditions lead to the need for a daily batching tank in lieu of direct feed from the existing units, which requires additional infrastructure (tank and pumps) In addition, the discharge from the foam fractionation units would not have sufficient pressure to reach the outfall from the landfill. A product tank is necessary to provide a feed reservoir for a new set of discharge pumps. The inclusion of additional infrastructure outside of the vendor's modular system will require a power supply that is separate from the vendors power panel. City standards also require a PLC to provide for remote monitoring of system performance. ENGINEER will provide the following services: • Add an influent tank and feed pumps to allow for operation of the PFAS treatment based on Republic transfer of an arsenic compliant volume equivalent to the processing capability of the PFAS unit within a 8 hour shift. • Add a product tank and discharge pumps to facilitate transfer of product water to the landfill discharge sewer. • Add electrical infrastructure to connect and distribute a new electrical supply to the FW-supplied equipment as well as the primary power feed to the modular PFAS system • Add a PLC to allow for external remote monitoring of equipment performance. Task Assumptions • The additional process and electrical equipment will be configured to allow for layout within the area designated for the PFAS treatment system • The new equipment will be located on the concrete slab that was planned for supporting the vendor modular equipment. The slab will include a raised containment curb and an automatic sump pump for discharging stormwater to the upstream Republic holding tanks. • The new Oncor power service will be configured to enter underground. Task Work Products • Additional Process Mechanical Sections and Details City of Fort Worth, Texas Attachment A Page 5 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 • Addition of Electrical drawings, including an Electrical Site Plan, Duct Bank Sections, Electrical Plan, Riser Diagram, Electrical Schematics, Electrical Details, PLC Interface Diagram • Addition of Controls details to P&IDs • Addition of a Network Architecture drawings TASK 308. Oncor and RNG Coordination The design of the PFAS treatment requires coordination between external entities and parallel project that requires coordination. ENGINEER will provide the following services: • Coordination with the power supplier (Oncor) to allow for integration of a new power into the overall design • Support collaboration with the RNG supplier on points of interface between the two projects in order to facilitate designs that work conjunctively (to the extent possible) for the best interest of the City Task Assumptions • Services are for coordination of design only; all fees associated with the new electrical service will be paid for by the City of Fort Worth. An authorized agent for the City will be responsible for any signatures and arranging payment. • Collaboration with the RNG provider is limited to points of interface between the projects; development of details and/or reconfiguring of the design for the benefit of the RNG project is not included. Task Work Products • Summary minutes from meetings / interactions with Oncor • Summary minutes from meetings / interactions with the RNG supplier. SCOPE OF WORK ASSUMPTIONS In the development of this scope of work and associated task budgets defined in "Attachment B", ENGINEER has made the following governing assumptions: • Assumptions identified in the prior scopes of work for the Southeast Landfill tasks, defined in Amendments No. 3 and No. 4, apply unless otherwise modified or restated in this PCM. • ENGINEER provision of forensic engineering or retained expert services is excluded from this scope of work. In the event ENGINEER is subsequently requested by CITY or others to provide documents or testimony regarding this scope of work, those additional services will be negotiated via change management pursuant to the rates and costs reflected in this Agreement, as may be amended in the future. City of Fort Worth, Texas Attachment A Page 6 of 7 ATTACHMENT A PROFESSIONAL ENGINEERING SERVICES FOR PCM-16 -SE LANDFILL ELECTRICAL SERVICE AND ANCILLARY SYSTEMS CITY PROJECT NO.: 104942 • Adjustments to the design will be considered as the project progresses and/or if regulatory aspects of the project evolve. If modifications are proposed, the ENGINEER will identify them as early as possible for discussion with and consideration by the CITY's project manager. Final Design Engineering Assumptions: • Site investigations and activities during site visits do not include formal condition assessments of assets and will be limited to the identification of apparent issues. If conditions are identified that warrant additional investigation or a condition assessment, ENGINEER will suggest the additional services. Submittal Documents and Review Procedures. • Submittals will be delivered as defined herein. Project Delivery Approach and Schedule: • Project completion within this defined PCM schedule does not otherwise guarantee the schedule for construction and start-up of the leachate PFAS Treatment process. End of `Attachment A' City of Fort Worth, Texas Attachment A Page 7 of 7 w w U w F � ONE w Z W U O co Uw0 a w w>U� U d W Z J ow LLJ Z Z U O ozz N J Q Cl) w❑ Z LLLL N Q JE O 4f} !F+ 0 a � N � o c 0 a N � m N U m a = a a NII 1 a UNION I (a O 1�,1111 V o m U N a � m 76 a v a � O t � Z � N 11,11 Hill m N H N L Cq a City of Fort Worth, Texas Mayor and Council Communication DATE: 06/09/26 M&C FILE NUMBER: M&C 26-0444 LOG NAME: 6060PFASTREATMENTSTUDYA5-BROWN AND CALDWELL SUBJECT (ALL) Authorize Execution of Amendment No. 5 to an Engineering Agreement with Brown and Caldwell in the Amount of $677,860.00 for a Revised Contract Amount of $10,541,377.00 for the Emerging Contaminants Per- and Polyfluoroalkyl Substances Treatment Study Project and Adopt Appropriation Ordinance to Effect a Portion of Water's Contribution to the Fiscal Years 2026-2030 Capital Improvement Program RECOMMENDATION: It is recommended that the City Council: 1. Authorize execution of Amendment No. 5 to City Secretary Contract Number 60733, an engineering agreement with Brown and Caldwell, in the amount of $677,860.00, for a Revised Contract Amount of $10,541,377.00 for the Emerging Contaminants Per- and Polyfluoroalkyl Substances Treatment Study project; and 2. Adopt the attached appropriation ordinance increasing estimated receipts and appropriations in the Water and Sewer Capital Projects Fund in the amount of $677,860.00, transferred from available PayGo funds within the Water and Sewer Fund, for the purpose of funding the Emerging Contaminants Per- and Polyfluoroalkyl Substances Treatment Study project (City Project No. 104942) to effect a portion of Water's Contribution to the Fiscal Years 2026-2030 Capital Improvement Program. DISCUSSION: The United States Environmental Protection Agency's (USEPA) ruling for regulating Maximum Contaminant Levels and Hazard Index for Per- and Polyfluoroalkyl Substances (PFAS) in drinking water has prompted the Water Department to formulate plans to monitor potential sources and reduce PFAS levels through source identification and treatment (if necessary). Prior to the adoption of USEPA's final rules, the Water Department initiated testing of multiple sources including raw water, sewer, and drinking water to better understand the full water life -cycle challenge in removing these contaminants. Through early testing, staff determined that additional advanced treatment may be needed at the drinking water treatment plants in order to comply with the proposed PFAS regulations. On December 12, 2023 Mayor & Council Communication (M&C 23-1075), the City Council authorized execution of an engineering agreement with Brown and Caldwell in the amount of $1,304,303.00 to conduct systematic sampling and testing of the water through various phases of the treatment process to help determine the optimal treatment strategy for reliable and economical removal of PFAS. Sampling has been conducted from all existing raw water sources and from various stages at all five City water treatment plants. The results will affect all existing and future customers. On June 11, 2024 (M&C 24-0513), the City Council authorized Amendment No. 1 to the engineering agreement in the amount of $1,797,323.00, for preliminary engineering design services. On December 10, 2024 (M&C 24-1132), the City Council authorized Amendment No. 2 to the engineering agreement in the amount of $5,591,853.00, for additional engineering design services regarding electrical, civil and process design improvements. On January 28, 2025 (M&C 25-0089), the City Council authorized Amendment No. 3 to the engineering agreement with Brown and Caldwell in the amount of $654,588.00 for additional engineering design services to identify potential treatment options and develop a final design for a treatment system to remove PFAS from wastewater generated at the City -owned Fort Worth Southeast Landfill. Wastewater from the facility was identified as a point source containing PFAS that discharges into the collection system. Anticipated benefits of this project include reducing PFAS concentrations in wastewater treatment plant influent, effluent, and biosolids, as well as establishing a demonstration facility that Fort Worth can showcase to other local and regional industries evaluating PFAS reduction and removal options. On December 9, 2025 (M&C 25-1091) the City Council authorized Amendment No. 4 to the engineering agreement with Brown and Caldwell in the amount of $515,450.00 for additional engineering design services to conduct bench -scale testing of selected treatment technologies for PFAS removal. The amendment includes added survey and Surface Utility Engineer (SUE) work, electrical system upgrades, landfill bench -scale testing, and additional National Contingency Plan (NCP) compliance tasks required by the updated regulatory approach. Amendment No. 5 will provide additional funding for chemical feed system and 48 inch transfer pipe modifications, PFAS Pilot Phase 3 operations, and evaluations related to the treated water pump station, including both hydraulic adjustments and HSC analysis. Additional work also includes adjustments to the GAC gallery elevation as well as the design of electrical service and ancillary support systems for the Southeast Landfill facility. It is the practice of the Water Department to appropriate its Capital Improvement Program (CIP) plan throughout the Fiscal Year (FY), instead of within the annual budget ordinance, as projects commence, additional funding needs are identified, and to comply with bond covenants. The actions in the M&C will appropriate funds in support of the Water Utility's portion of the City of Fort Worth's Fiscal Years 2026-2030 Capital Improvement Program. Funding is currently available in the Transfer to Water/Sewer account of the Water & Sewer Fund for the purpose of funding the Emerging Contaminants PFAS Treatment Study project. Funding for the Emerging Contaminants PFAS Treatment Study project is depicted below: Fund Existing Appropriations Additional Appropriations Project Total* Fund 56002 — W&S Capital $9,888,517.00 $677,860.00 $10,566,377.00 Project Project Total $9,888,517.00 $677,860.00 $10,566,377.00 *Numbers rounded for presentation purposes. FY2026 — Water PAYGO Appropriations per City Ordinance 27979-09-2025 FY2026 Amended PayGo YTD PayGo FY2026 FY2026 Original (includes any council Approved for / This M&C Remaining Adopted PayGo actions subsequent to Moved to Capital PayGo budget adoption) Projects Balance $101,090,082.00 $101,090,082.00 ($66,662,5407.29) ($677,890.00) $33,749644.71 Note: there may be other pending actions or recently approved actions that are not reflected in the table This project is located in ALL COUNCIL DISTRICTS. FISCAL INFORMATION / CERTIFICATION: The Director of Finance certifies that funds are currently available in the Water & Sewer Fund and upon the approval of the above recommendations and adoption of the attached appropriation ordinance, funds will be available in the W&S Capital Projects Fund for the Emerg. Cont. PFAS Trtmnt Study project to support the execution of the amendment. Prior to any expenditure being incurred, the Water Department has the responsibility of verifying the availability of funds. Submitted for City Manager's Office by. Jesica McEachern 5804 Originating Business Unit Head: Chris Harder 5020 Jerry Pressley 8257 Additional Information Contact: Makayla Johnson 6529 FORT WORTH. City Secretary's Office Contract Routing & Transmittal Slip Contractor's Name: Brown and Caldwell Subject of the Agreement: Engineering services for the Emerging Contaminants - PFAS Treatability Study project. M&C Approved by the Council? * Yes 0 No ❑ If so, the M&C must be attached to the contract. Is this an Amendment to an Existing contract? Yes 0 No ❑ 60733 If so, provide the original contract number and the amendment number. Is the Contract "Permanent"? *Yes 0 No ❑ If unsure, see backpage for permanent contract listing. Is this entire contract Confidential? *Yes ❑ No 0 If only specific information is Confidential, please list what information is Confidential and the page it is located. Effective Date: If different from the approval date. Expiration Date: If applicable. Is a 1295 Form required? * Yes 0 No ❑ *If so, please ensure it is attached to the approving M&C or attached to the contract. Project Number: If applicable. 104942 *Did you include a Text field on the contract to add the City Secretary Contract (CSC) number? Yes 0 No ❑ Contracts need to be routed for CSO processing in the followingorder: rder: 1. Katherine Cenicola (Approver) 2. Jannette S. Goodall (Signer) 3. Allison Tidwell (Form Filler) *Indicates the information is required and if the information is not provided, the contract will be returned to the department. 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