hdrinc.com
2365 Iron Point Road, Suite 300, Folsom, CA 95630
T 916.817.4700 F 916.817.4747
January 16, 2026
Mr. John Smith
City of Fort Bragg
Public Works Department
416 North Franklin Street
Fort Bragg, CA 95437
RE: HDR’s Amendment to Provide Engineering Services During Construction for Water Treatment Plant Rehabilitation Project
Dear Mr. Smith:
This letter serves as formal request for Amendment No. 3 to the Professional Services Agreement between the City of Fort Bragg (City) and HDR Engineering, Inc., originally executed on December 18, 2020, for the Water Treatment Rehabilitation Project.
If approved, the Contract will be amended to include the work and compensation defined in Exhibit A of this Amendment No. 3.
Due to project demands exceeding the original scope, HDR reviewed a total of 135 submittals and resubmittals, compared to 35 submittals and resubmittals included in the original scope.
In addition, HDR reviewed 43 Requests for Information (RFIs), exceeding the 22 RFIs identified in the original scope.
As an optional task, this amendment also includes additional scope to develop record drawings based on Contractor’s red-line markups. HDR’s contract did not include developing CAD files from Contractor-provided drawings. This optional task provides the City with the option to have HDR prepare updated CAD files reflecting as-built conditions documented by the contractor.
All other Contract provisions not shown in Exhibit A remain unchanged and in effect.
Thank you for the consideration of this amendment request and opportunity to work with the City on this important infrastructure project.
Sincerely,
HDR ENGINEERING, INC.
J. David Zuber, PG (CA #5933) Ligaya C. Kohagura, PE (CA #56463) Vice President Project Manager
hdrinc.com
2365 Iron Point Road, Suite 300, Folsom, CA 95630
T 916.817.4700 F 916.817.4747
Exhibit A
Scope of Services
Amendment 3
This scope of work amends the Amendment 1 scope of work executed on November 13, 2023, as shown below.
Task 4 - Engineering Services During Construction
SUBTASK 4.3 – SUBMITTALS/RESUBMITTALS
HDR will review the contractor’s submittals, including shop drawings and operations and maintenance (O&M) manuals, for conformance with the contract documents. Up to additional 100 submittals and resubmittals are included in this amendment.
SUBTASK 4.5 - CONTRACT CLARIFICATIONS
HDR will answer questions and provide written interpretations of the requirements of the contract documents and evaluate the acceptability of substitute materials and equipment. The budget for this task includes up to 21 additional clarifications and responses to requests for information (RFIs).
Subtask 4.8 – Record Drawings (OPTIONAL)
HDR’s team will prepare record drawings of the final project depicting as-built conditions documented and submitted to the City through mark-ups by the contractor.
Deliverables: Electronic AutoCAD copy and Adobe Acrobat (PDF) copy of the record drawings.
Compensation
Table 1 shows the estimated work effort and cost to perform the scope of services described above.
Table 1 - Estimated Work Effort and Cost
Task Task Description Senior Project
Manager Engineer 2 Technical Specialist 4 CADD Tech Accounting Admin Ligaya
Kohagura
Jagpreet
Kamboj Bill Ettlich Steve Lari Nichole Wolfe Maika Winkler $ 140.00 350.00 $ 295.00 $ 155.00 $ 135.00 $ 130.00 $ 0 2.5% Task 4 - Engineering Services During Construction
4.3 Submittals/Resubmittals (up to additional 100) 8 25 6 3 8 50 9,515.00 0.00 0.00 0.00 0.00 9,515.00
4.5 Contract Clarifications (up to additional 21) 10 8 2 2 22 5,470.00 0.00 0.00 0.00 0.00 5,470.00
4.8 Record Drawings (OPTIONAL) 0 3 54 0 57 8,790.00 0.00 0.00 0.00 0.00 8,790.00 18 36 8 54 3 10 129 23,775.00 0.00 0.00 0.00 0.00 23,775.00 COLUMN TOTALS 18 36 8 54 3 10 129 23,775 $ - $ - $ - $ - $ 23,775 $ Total HDR
Labor Hours
Sub Consultant
Mark up
($)
HDR Expenses
($) Total HDR Labor
($)
Sub Consultant Cost
($)
Tech Charge
($)
Total Cost
($)
Subtotal Task 4
2025 Billing Rates
Client Name: City of Fort Bragg
Project Name: Fort Bragg Water Treatment Plant Expansion (Amendment 3) 1/15/2026 HDR Engineering, Inc.