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Home My WebLink AboutCONSENT Little Quil bridge replacement - Supp 3 Department of Public Works O Consent Agenda Page 1 of 1 Jefferson County Board of Commissioners Agenda Request To: Board of Commissioners Josh Peters, County Administrator From: Eric Kuzma, Public Works Director/ Agenda Date: June 22, 2026 Subject: Supplemental Agreement No. 3 with Sargent Engineers, Inc. for Little Quilcene River Bridge Replacement, County Project No. 18020970, Federal Aid No. BRS-Q161(010) Statement of Issue: Local Agency Supplemental Agreement No. 3 with Sargent Engineers, Inc. of Olympia, Washington for the Little Quilcene River Bridge Replacement. Analysis/Strategic Goals/Pro's Et Con's: The Little Quilcene River Bridge, located at Center Road MP 14.62, is classified as structurally deficient and has load restrictions for single unit trucks. Replacement of this bridge is of high importance because Center Road is Jefferson County's main north-south route for freight mobility and the travelling public. Public Works was awarded federal funding for bridge replacement in 2021. Sargent Engineers was hired by Public Works in 2022 for bridge design, and is currently working on PS&E and permitting for the bridge replacement. This agreement provides for revision and updates to the PSB.E in order to comply with the recently updated Stormwater Management Manual for Western Washington, and incorporation of Large Woody Debris project elements that were not included in the original scope of work. Supplement Agreement No. 3 also extends the agreement completion date to December 31, 2027. Fiscal Impact/Cost Benefit Analysis: The cost of this supplement is $75,516, which will increase the maximum amount payable under this agreement from $535,138 to $610,654. This will be funded at 100% by FHWA. Recommendation: Public Works recommends that the Board execute all three originals of the Supplemental Agreement with Sargent Engineers, Inc., and return two to Public Works for further processing. Department Contact: Mark Thurston, P.E., Project Manager, 385-9210. Reviewed By: (-- %25\() 67/(6,( -‘ Jos eters, County Administrator Date CONTRACT REVIEW FORM Clear Form (INSTRUCTIONS ARE ON THE NEXT PAGE) f� CONTRACT WITH: Sargent Engineers,Inc. Contract No:f O/O �� D Contract For: Little Quilcene River Bridge Replacement Term: December 31, 2027 J COUNTY DEPARTMENT: Public Works Contact Person: Mark Thurston/Chris Spell Contact Phone: ext.210/ext.208 Contact email: mthurston@co.jeferson.wa.us/cspall@co.jellerson wa us AMOUNT: $75,516 PROCESS: — Exempt from Bid Process Revenue: 18033320.333133.20970 Cooperative Purchase Expenditure: 18059500.41.000 Competitive Sealed Bid Matching Funds Required: No Small Works Roster Sources(s) of Matching Funds Vendor List Bid Fund # RFP or RFQ Munis Org/Obj ✓ Other: Consultant Supplemental Agreement APPROVAL STEPS: STEP 1: DEPARTMENT CERTIFIES COMPLIANCE WITH JCC 3.55.080 AND CHAPTER 42.23 RCW. CERTIFIED: ■❑ N/A:a 6/8/2026 Signature Date STEP 2: DEPARTMENT CERTIFIES THE PERSON PROPOSED FOR CONTRACTING WITH THE COUNTY (CONTRACTOR) HAS NOT BEEN DEBARRED BY ANY FEDERAL, STATE, OR LOCAL AGENCY. CERTIFIED: N/A: 6/8/2026 Signature Date STE 3: RISK MANAGEMENT REVIEW (will be added electronically through Laserfiche): Electronically approved by Risk Management on 6/16/2026. STEP 4• PROSECUTING ATTORNEY REVIEW (will be added electronically through Laserfiche): Electronically approved as to form by PAO on 6/12/2026. K at"Supplement Agreement Number 3" indicates Pre-approved by Phil; no other signature block appears. STEP 5: DEPARTMENT MAKES REVISIONS & RESUBMITS TO RISK MANAGEMENT AND PROSECUTING ATTORNEY(IF REQUIRED). STEP 6: CONTRACTOR SIGNS STEP 7: SUBMIT TO BOCC FOR APPROVAL 1 .47 Washington State .I/ Department of Transportation Supplemental Agreement Organization and Address Number 3 Sargent Engineers,Inc. Original Agreement Number 320 Ronlee Ln NW Olympia,WA 98502 LQBR-2022 Phone: (360) 867-9284 Project Number Execution Date Completion Date August 15, 2022 December 31, 2027 Project Title New Maximum Amount Payable Little Quilcene River Bridge Replacement $610,654 Description of Work Work consists of preparing Large Woody Material design, revised stormwater design, and associated updates to the Plans, Specifications, and Estimate. The Local Agency of Jefferson County Public Works desires to supplement the agreement entered in to with Sargent Engineers, Inc. and executed on August 15. 2022 and identified as Agreement No. LQRB-2022 All provisions in the basic agreement remain in effect except as expressly modified by this supplement. The changes to the agreement are described as follows: I Section 1, SCOPE OF WORK, is hereby changed to read: Preparation of Large Woody Material design, revised stormwater design, and updated Plans, Specifications, and Estimate as described in Exhibit B. II Section IV, TIME FOR BEGINNING AND COMPLETION, is amended to change the number of calendar days for completion of the work to read: The completion date is extended to December 31. 2027 III Section V, PAYMENT, shall be amended as follows: The cost of this supplement is $75,516 increasing the Maximum Amount Payable to $610,654. as set forth in the attached Exhibit A, and by this reference made a part of this supplement. If you concur with this supplement and agree to the changes as stated above, please sign in the Appropriate spaces below and return to this office for final action. By: Jessica Soward. Sargent Engineers By: Cc& ,LctJ Consultant Signature Approving Authority Signature Approved as to form only. PRE-APPROVED CONTRACT 02/28/2023 Date DOT Form 140-063 Philip C Hunsucker, Revised 09/2005 Chief Civd Deputy Prosecuting Attorney Exhibit "A" Summary of Payments Original Subconsultants Aspect Watershed Estimated Costs Sargent Consulting Science Clearway Skillings Total NHR Labor Cost $ 186,403 $ 25,664 $ 39,823 $ 124,100 $ 86,376 $ 462,366 Direct Non-Salary Costs $ 94 $ 20,507 $ 173 $ 30,610 $ 8,564 $ 59,948 Total 1 $ 186,497 $ 46,171 $ 39,996 $ 154,710 $ 94,940 1 $ 522,314 Supplement#1 Subconsultants Aspect Watershed Estimated Costs Sargent Consulting Science Clearway Skillings Total NHR Labor Cost $ - $ - $ - $ - $ 6,849 $ 6,849 Direct Non-Salary Costs $ - $ - $ - $ - $ 105 $ 105 Total 1 $ - $ - $ - $ - $ 6,954 1 $ 6,954 Supplement#2 Subconsultants Aspect Watershed Estimated Costs Sargent Consulting Science Clearway Skillings Total NHR Labor Cost $ - $ - $ - $ - $ 5,870 $ 5,870 Direct Non-Salary Costs $ - $ - $ - $ - $ - $ - Total 1 $ - $ - $ $ - $ 5,870 1 $ 5,870 Supplement#3 Subconsultants Aspect Watershed Estimated Costs Sargent Consulting Science Clearway Skillings Total NHR Labor Cost $ 19,282 $ - $ 6,496 $ - $ 49,738 $ 75,516 Direct Non-Salary Costs $ - $ - $ - $ - $ - $ - Total 1 $ 19,282 $ - $ 6,496 $ - $ 49,738 1 $ 75,516 Original + Supplement#1 +Supplement#2 +Supplement#3 Subconsultants Aspect Watershed Estimated Costs Sargent Consulting Science Clearway Skillings Total NHR Labor Cost $ 205,685 $ 25,664 $ 46,319 $ 124,100 $ 148,833 $ 550,601 Direct Non-Salary Costs $ 94 $ 20,507 , $ 173 $ 30,610 $ 8,669 $ 60,053 Total 1 $ 205,779 $ 46,171 $ 46,492 $ 154,710 $ 157,502 1 $ 610,654 ENTExhibit A Prime Consultant Cost Computations Little Quilcene River Bridge Replacement Stormwater Design Update & Large Woody Material Design Sen. Project Project Design Principal Engineer Engineer Engineer Task Cost Total Labor Rate: $249.28 $196.89 $152.43 $112.73 Task 1 -Project Management Project Coordination 16 $3,989 Task 1 Subtotal 16 0 0 0 $3,989 Task 8-Plans, Specification,and Estimate 8.3 Stormwater Design Update(Performed by Skillings, incl. in subconsultants costs below) 8.4 Plans,Specifications,and Estimate LWM Details 24 12 $6,554 Updated Plans 16 8 $4,370 Updated Estimate 8 4 $2,185 Updated Specifications 8 4 $2,185 Task 8 Subtotal 0 56 28 0 $15,294 Total Labor Hours 16 56 28 0 Direct Salary $78.50 $62.00 $48.00 $35.50 Overhead (187.56%) $147.23 $116.29 $90.03 $66.58 Profit(30%) $23.55 $18.60 $14.40 $10.65 Total Labor Rate: $249.28 $196.89 $152.43 $112.73 Total Labor Cost $3,989 $11,026 $4,268 $0 $19,282 Direct Costs&Subconsultants Mileage $0 Task 3-LWM Design (Watershed Science&Engineering) $6,496 Task 8.3-Stormwater Update(Skillings) $49,738 $56,234 Total for Stormwater Design Update & Large Woody Material Design $75,516 Management Reserve Fund $0 Requested Supplement $75,516 Prepared by:JSS Page 1 5/27/2026 40. WATERSHED Estimate of Professional Services �•� SCIENCE& ENGINEERING Prepared for: Sargent Engineers 506 2nd Ave,Suite 2700 Project: Little Quilcene Seattle,WA 98104 LWM Design Tel.(206)521-3000 Date: April 9,2026 Prepared By: Chris Frei Hours TASK DESCRIPTION Prin Sr.Eng.1 Sr.Geom Staff Eng. Jr Eng. Clerical Totals Final Hydraulic Design LWM Design(Tasks 1-3) 1 4 16 $3,661 Hydraulic Update(Task 4) 1 4 $854 Update Reporting(Task 5) 1 2 4 $1,332 Admin 2 2 $650 Total Hours and Direct Labor Cost(DL) 2.0 9.0 0.0 24.0 0.0 2.0 1 Labor Rate($/hr)(WSDOT Approved OH 146.882%,30%profit on DL) $245.65 $232.37 $185.90 $155.36 $119 51 $92.52 TOTAL LABOR COST $491 $2,091 $0 $3,729 $0 $1851 $6,496 Direct txpense uetaii Units Rate Cost Mileage $0 725 $0 Total $0 Cost Summary Total Labor $6,496 Total Direct Expenses $0 Total $6,496 jSKILLINGS D 6 $ p 0 6 SUBCONSULTANT COST COMPUTATION—HUMAN HOURS 22067 v SARGENT ENGINEERS,INC. p 9 p LITTLE QUILCENE BRIDGE REPLACEMENT 2 o m m m m m D 0 = 3 3 m Z Z Z 3. Z m r7 2 D o m Z �� 22 m m Gl 7� A -i m 0 A TASK# TASK DESCRIPTION 1 2024 SWMMWW Revisions to Stormwater Prepare 90%plans with preferred option for runoff treatment BMP and flow control BMP (up to 5 plan sheets and up to 7 detail 1 sheets). 12 60 70 Prepare 90%Special Provisions for 2 stormwater design. 4 10 Prepare 90%Quantities Notebook and Engineer's Estimate of Probable Costs to 3 Construct for stormwater design. 4 10 Update final stormwater drainage report documenting the preferred options for runoff treatment BMP and flow control BMP. Update SWPPP and prepare Final 4 Maintenance Plan. 4 40 20 Phone conference with Sargent to discuss 5 90%storm PS&E and comments. 2 2 Incorporate 90%storm PS&E comments, 6 prepare 100%storm PS&E package. 4 10 10 Provide project coordination and QA and QC 7 of deliverables. 4 12 2 HOURS PER DISCIPLINE 4 14 30 130 100 2 Project No.22067 Little Quilcene River Bridge Replacement (360) 491-3399 • 5016 Lacey Boulevard SE, Lacey, Washington 98503 • www.skillings.com jSKILLINGS 0 0 $ n 0 0 SUBCONSULTANT COST COMPUTATION—SUMMARY 22067 SARGENT ENGINEERS,INC. LITTLE QUILCENE BRIDGE REPLACEMENT NEGOTIATED HOURLY RATE(NHR): Classification Man Hours X Rate = Cost PRINCIPAL.IN•CHARGE 4 X $283.22 = 51,132.88 PROJECT MANAGER 14 x $272.62 = $3.816.67 PROJECT ENGINEER 30 X $230.97 = 56,929.07 ENGINEER 130 x $156.00 = 520,279.82 TECHNICIAN 100 X $172.66 = 517,265.87 PROJECT ADMINISTRATOR 2 x $156.79 = 5313.57 Total Hours= 280 Total NHR• REIMBURSABLES: Mileage 0 X $0.725 = $0.00 Miscellaneous Expenses $0.00 X 10% = $0.00 SUB TOTAL Rebnbursables• ' -, SUBCONSULTANT COST(See Exhibit Ej: _ Geotechnical $0.00 X 15% • $0.00 Subconsuttant 1 $0.00 X 10% • $0.00 Subconsuttant 2 $0.00 X 10% • $0.00 Subconsultant 3 50.00 X 10% • $0.00 SUB TOTAL Subconsultants=L 50.00. MANAGEMENT RESERVE FUND SUB TOTAL 549,737.88 X 0% • 50.00 GRAND TOTAL GRAND TOTAL = ( _ $49,737.88 PREPARED BY: Ian Lee,PE DATE: 5/12/2026 REVIEWED BY: Patrick Skillings,PMP DATE: 5/12/2026 Project No.22067 Little Quilcene River Bridge Replacement (360) 491-3399 • 5016 Lacey Boulevard SE, Lacey, Washington 98503 • www.skillings.com Exhibit B Scope of Work Little Quilcene River Bridge Replacement: Stormwater Design Update & Large Woody Material Design OBJECTIVE The objective of this supplement is to provide the professional services necessary to provide Large Woody Material (LWM) design and a revised stormwater design for the replacement of the Little Quilcene River Bridge in Jefferson County. The LWM design will provide hydraulic design of two LWM structures in the vicinity of the new bridge to increase channel stability and habitat. Plans and details will be developed, along with updated cost estimates,and specifications for the LWM. The stormwater design revision will provide final design, plans, and specifications for an updated stormwater system that follows the requirements of the 2024 Stormwater Management Manual for Western Washington, including preparation of the revised drainage report. Additionally, the project special provisions and bid items will be updated to the 2026 WSDOT Standard Specifications. DURATION The development of the LWM design, revised stormwater design, and completion of the associated changes to the PS&E (90%) are anticipated to require approximately six weeks following selection of the preferred stormwater system concept (redesigned concept being completed under original budget). Completion of the Final PS&E (100%) is anticipated to take approximately one week following County review of the 90% PS&E. SERVICES The Consultant will perform all services and furnish all materials necessary to accomplish the following work items: TASK 1—PROJECT MANAGEMENT(Sargent) This task includes the additional project management required for the stormwater system revision and LWM design. TASK 3-HYDRAULIC ANALYSIS(Watershed Science & Engineering) This task includes the additional hydraulic engineering services to support the design of LWM associated with the bridge replacement. Little Quilcene River Bridge Replacement Exhibit B Scope of Work Page 1 of 3 The hydraulic design tasks include: 1. Provide design details for LWM components that will be placed on site. Complete design calculations and determine the location and orientation of each piece and corresponding ballast/anchoring requirements. 2. Create sketches showing the design and installation requirements for LWM components to be placed at the site, to be used for preparation of CAD drawings for inclusion in the project plan set. 3. Prepare specifications for the LWM components. 4. Update the project HEC-RAS 2D hydraulic model to reflect the final crossing design grading, riprap countermeasures, and LWM, and run the model to evaluate hydraulic conditions, including 100-year water surface elevation and channel velocities. 5. Update the hydraulic design report to include the final design analysis. The Consultant will submit a draft of the final report for review. Upon receipt of comments, the Consultant will prepare a final report. Deliverable:Updated Draft and Final Hydraulic Report, with WSBIS scour code(PDF electronic file). TASK 8- PLANS, SPECIFICATION AND ESTIMATE(PS&E) This task includes the additional engineering services to prepare a revised stormwater design in accordance with the 2024 Stormwater Management Manual for Western Washington (SWMMWW), prepare revised stormwater plans and details, prepare LWM plans and details, and make corresponding updates to the plan set. The project quantities, cost estimate, and technical specifications will also be updated to include the new design elements, and to correspond to the 2026 WSDOT Standard Specifications. 8.3 Stormwater Design (Skillings) Stormwater design for the project previously used the 2019 SWMMWW. Under the 2019 SWMMWW,the project did not trigger evaluation of all minimum requirements, only MR1-5. This meant that runoff treatment and flow control were not required to be evaluated, and only implementation of LID BMPs were required to be considered. County code and NEPA approval requires the use of the latest drainage design manual,which was released by the Department of Ecology in July 2024. With the current 2024 SWMMWW manual,the project will trigger evaluation of all minimum requirements (MR1-9), which will require the evaluation of runoff treatment BMPs and flow control BMPs. Stormwater design tasks include: Little Quilcene River Bridge Replacement Exhibit B Scope of Work Page 2 of 3 1. Update final stormwater drainage report documenting the preferred options for runoff treatment BMP and flow control BMP. Update SWPPP and prepare Final Maintenance Plan. 2. Prepare 90% plans with preferred option for runoff treatment BMP and flow control BMP (up to 5 plan sheets and up to 7 detail sheets). 3. Prepare 90%Special Provisions for stormwater design. 4. Prepare 90%Quantities Notebook and Engineer's Estimate of Probable Costs to Construct for stormwater design. 5. Incorporate 90%storm PS&E comments, prepare 100%storm PS&E package. 6. Provide project coordination and QA and QC of deliverables. Deliverable: Preliminary and Final Storm water Drainage Report(PDF electronic file) Assumptions: 1. Runoff treatment and flow control modeling will use WWHM2012. 2. Runoff treatment BMPs are assumed to be a manufactured treatment device. 8.4 Plans,Specifications and Estimate (Sargent) The Consultant will prepare updated plans, specifications, and cost estimate for the bridge replacement to include the LWM details and revised stormwater design. The Consultant will prepare updated specifications for Division 3 thru 9 of the Special Provisions using WSDOT General Special Provisions to include the new design elements, and to align with the 2026 WSDOT Standard Specifications. The Consultant will provide an updated Engineer's estimate of quantities, construction costs, and bid items to include the new design elements, and to align with the 2026 WSDOT Standard Specifications. Deliverables: 1. 90 Percent PS&E Submittal: o Updated Drawings—pdf 11x17 electronic file o Updated Specifications—electronic, word format o Updated Cost Estimate—electronic, excel spreadsheet format 2. 100 Percent PS&E Submittals: o Stamped Drawings—pdf 11x17 electronic file, electronic AutoCAD file o Stamped Specifications (Divisions 3-9)—electronic,word format, and stamped cover sheet in PDF format o Cost Estimate—electronic, excel spreadsheet format o Bid Item List—electronic, excel spreadsheet or word format Little Quilcene River Bridge Replacement Exhibit B Scope of Work Page 3 of 3