Exhibit_D_-_Detailed_SOW_for_SW_Quadrant.pdf

Complete PS&E Engineering Design Package and Services Consultant Scope of Work Summary Planning and Public Works – Surface Water Management (PPW-SWM) 1428 128th ST E – Southwest (SW) Quadrant Setback Levee/Revetment Project

Project Overview, Purpose and Primary Goals

The purpose of this Request for Qualifications (RFQ) is to retain a consultant to develop, prepare, and provide complete engineering design, construction Plans, Specifications, and Estimates (PS&E) and other associated services for the Southwest (SW) Quadrant Setback Levee/Revetment project.

The SW Quadrant Setback Levee/Revetment project is located along the west side (left bank) of the Puyallup River, south of 128th Street East (approximately between river miles 16.7 and 17.5). The length is approximately 5,300 Lin-Ft.

See attached project Site Vicinity Map for visual reference. Also attached is a Setback Conceptual Map exhibit of the SW Quadrant Setback project. The conceptual map exhibit is from the completed 128th Street East Comprehensive Setback Levee Feasibility Study, dated May 2023.

The primary goals of the proposed project are to provide flood risk reduction, increase and improve aquatic habitat, and water quality benefits.

Major scope of work tasks for the SW Quadrant Setback Levee/ Revetment includes preparing full PS&E engineering design construction plans. PS&E deliverables will include (but not limited to) advancing the existing 5% alternative through Stage 2 (15%), Stage 3 (30%), Stage 4 (60%), Stage 5 (90%) and Stage 6 (100% PS&E) bid ready design plans and specifications. See Attachment 1 for the PPW-SWM Stage Gate Delivery Process for more information.

Major scope of work tasks for the SW Quadrant Setback Revetment includes a Delivery Strategy Plan.

This is a plan that addresses how the design, property rights, funding, permitting, and construction are progressed for the NW, SW, and NE Quadrant setback projects. This may include all three setback quadrants advancing together and times where a specific quadrant may accelerate forward. The delivery strategy will also need to include identification of potential setback alternatives in the Southeast Quadrant area and a recommended preferred alternative. The recommended alternative will need to be included in the hydraulic modeling for the NE, SW, NW, and SE Quadrant setback projects.

See Attachment 1 for the PPW-SWM Stage Gate Delivery Process.

The SW Quadrant Setback Levee/Revetment project will progress the full setback levee/revetment alternative (identified from the completed 128th Street East Comprehensive Setback Levee Feasibility Study, dated May 2023). The feasibility study can be viewed via this link: 128th ST E Comprehensive Setback Levee Feasibility Study https://www.piercecountywa.gov/6867/128th-Street-Comprehensive-Setback-Levee https://www.piercecountywa.gov/6867/128th-Street-Comprehensive-Setback-Levee

Other associated tasks for the project include hydrologic and hydraulic modeling basis of design reports, geotechnical evaluation and investigation, preparing property acquisition plan, providing stakeholder and public outreach support, preparation of and providing completed FEMA Conditional Letter of Map Revision (CLOMR) application(s) with associated required hydraulic modeling, documentation, and other associated task items.

It is assumed that the FEMA CLOMR review and approval for the SW Quadrant Setback project will also include the NE and NW Quadrant Setback projects, rather than obtaining separate CLOMRs for each of the quadrant setback projects.

It is also assumed that the FEMA CLOMR and associated modeling data for the Planning and Public Works Office of the County Engineer (PPW-OCE) Rhodes Lake Roads Corridor (RLRC) project will be the basis for the SW, NE, NW, and SE Quadrant Setback projects to build from. As of September 2026, FEMA has not issued a CLOMR for the RLRC project.

Meetings with FEMA will be required to determine and establish an approved approach and submittal to obtain a FEMA CLOMR respective to the NE, SW, NW, and SE Setback projects and the RLRC project

CLOMR.

The SW Quadrant setback project is envisioned to be comprised of a setback levee transitioning to a setback revetment (from upstream to downstream). It will include a levee prism feature (upstream segment) and an engineered bio-revetment (that may include toe and some facing rock), engineered log jams, other wood and fish habitat features, plantings, maintenance and operation access measures, existing levee removal and/or notching, and other associated elements.

While the design phases may progress concurrently, Pierce County has obtained the majority of known property rights for this phase, allowing the NE Quadrant to be able to accelerate into construction. The SW Quadrant will require property rights, which is expected to add additional time with construction to lag one or more years behind.

Task 1. Project Management

• Prepare an Itemized Project Task and Sub-Task Summary including associated costs for Progress Tracking and Billing Invoice purposes.

• Prepare a schedule for the Scope of Work tasks, including major milestones, and deliverables with dates.

• Perform Data Gap Analysis.

• Attend and participate in every other month (or more frequent as may be needed) project status update team meetings with PPW-SWM as needed (Preliminary 30% Design through 100% Final Design Plans Phases).

• Prepare and Update (for each Stage Gate Phase) a Project Management Plan.

• Monthly Status Reports.

• Monthly Invoice Billings.

• The work and tasks to produce and deliver the complete PS&E Package and Engineering Services shall follow the PPW-SWM Stage-Gate Progression Process, to the applicable extent. Each Stage Gate shall go through a Gate Review and Approval with PPW-SWM Management, prior to progressing to the next stage.

• Identify private properties that will need to be accessed for the preliminary design work, so that PPW-SWM can pursue and obtain Right of Entries (to the extent possible).

• Attend one field on-site project Kick-Off Meeting.

Task 2. Data Collection

A. Review Existing Available Data and Collect New Data

• Review available existing data sets relative to the project (i.e. LiDAR topography, bathymetry data, other topo survey, hydrologic and hydraulic (H&H) models, environmental data, critical and sensitive areas, etc.)

• Identify Topographic Survey Data Needs (upstream, downstream, across stream, above river channel, below river channel, and water body areas including adjacent floodplains and wetlands)

• Consultant shall retain a bathymetry survey consultant to collect any needed bathymetry channel and water body data.

• PPW-SWM will perform topographic survey of upland areas, above river channel and water bodies.

• Arrange for Utility Field Locations.

• Prepare a Recommendation Summary for any additional data needs for the preliminary design work.

B. Hydrologic and Hydraulic Modeling

• B1. Review of Existing H&H Data o Review and synthesize information from existing hydrologic and hydraulic analysis, models, and reports. This includes:

- PPW-Office of the County Engineer (OCE) Rhodes Lake Road Corridor (RLRC) Project

- PPW-SWM 128th ST E Setback Levee Feasibility Study (May 2023)

- PPW-OCE McCutcheon Road Canyon Falls Creek Culvert Replacement Project H&H

Analysis and Modeling.

- FEMA Effective FIRM and FIS H&H Analysis and Models (which include riverine seclusion areas).

- Draft Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) H&H Analysis Models Update (which was never adopted by FEMA; however, Pierce County uses the model results as best available data for regulatory and permitting purposes).

- Update existing USGS Gage records for peak flow regression analysis (as may be needed).

- Other existing H&H analysis and models as applicable

• B2. H&H Modeling and Analysis o The underlying presumption is that the proposed new setback levee feature will not be accredited.

o Establish criteria and approach for H&H modeling early on with the Pierce County Floodplain Administrator.

o Identify any other concerns and/or issues as it pertains to Zero Rise Certification and FEMA CLOMR approval.

o Perform H&H analysis and modeling (2-D) for Existing Conditions, with levees in-place.

o Perform H&H analysis and modeling (2-D) for Existing Conditions, without levees in-place.

o Perform H&H analysis and modeling (2-D) for Proposed Conditions with Climate Change

Factors. Climate Change Factors shall not be included for Zero Rise and CLOMR H&H analysis.

o Perform Updated H&H analysis and modeling (2-D) that accounts for:

- The RLRC project proposed improvements (i.e. existing and proposed roadways, new bridge structure, culverts, stormwater facilities, etc.).

- The OCE CRP-5846 McCutcheon Road and Canyon Falls Creek Culvert Replacement project (Note: available design details may be limited and not fully available initially).

o Perform Zero Rise Analysis and Hydraulic Modeling to identify and determine Base Flood

Elevation Impacts, impact locations (including the project limits, upstream, downstream, and across stream, existing house structures, infrastructure, public, and private property).

• B3. SW Quadrant Setback Revetment o Develop and perform H&H analysis and modeling.

- Identify and evaluate base flood elevation and property impacts. This will assist with development of a property acquisition plan, for the preferred option selection.

o Perform additional H&H analysis and modeling (2-D) as needed, to identify measures, features, and/or actions to mitigate for Zero Rise impacts.

o Prepare a H&H Technical Report (draft and final versions).

C. Property Acquisition Plan

• Identify affected properties.

• Prepare a draft Property Acquisition Plan based on modeling results, identified impacts, and proposed design.

o The Property Acquisition Plan includes drawings, property areas (full and partial areas), full and partial property acquisitions, owner name, site address, delivery address, parcel number, etc.

D. Sediment and Geomorphic Analysis and Evaluation

• Review and synthesize existing geomorphic and sediment information and analysis.

• Perform sediment evaluation and analysis for existing conditions.

• Perform sediment evaluation and analysis for proposed conditions.

• Perform sediment evaluation and analysis for proposed conditions with climate change factors.

• Sediment collection sampling and lab analysis with report.

• Evaluate and analyze the risk of terrace bank erosion impacts for existing conditions and proposed project conditions.

E. Environmental Evaluation and Assessments

• The assumption is that the project will need to obtain a USACE Individual 404 Permit and WA Department of Ecology 401 Water Quality Certification.

• Prepare a permitting strategy and schedule outline and report to coordinate efforts with the PPW-SWM Biologist.

• Wetland delineation of affected areas and survey point mapping of wetland delineation (for locations where legal right of entry is obtained by Pierce County).

• Evaluate and analyze existing wetlands within the project and affected areas.

• Identify wetland impacts.

• Perform and prepare a wetland evaluation, analysis, and mitigation plan and report (draft and final versions).

• Perform and prepare a Fish and Wildlife Habitat evaluation, assessment, mitigation plan, and report (draft and final).

• Identification, delineation, and mapping of Ordinary High Water Line (OHWL) of the river, water bodies, side channels, and wetlands.

• Derive and provide all relevant information, plans, maps, and data to populate State Environmental Policy Act (SEPA) Checklist and Joint Aquatic Resources Permit Application

(JARPA).

• Prepare a Shorelines Compliance Data and Report to support required applicable permits.

• Prepare WA Department of Natural Resources Aquatic Lands Use Data and Report for permitting purposes.

• Perform and prepare Endangered Species Act Biological Assessment and Evaluation (draft and final).

• Perform and prepare a Cultural Resources Study Assessment, Evaluation, and Report for Cultural Resources requirements (draft and final).

• Develop and prepare a report for PC Code 18E110.020 Erosion Hazard Report/Geotechnical Analysis (draft and final).

• Prepare digital maps, plans, and attribute table that contains GIS data information respective to the proposed design measures and features, wetland delineation, mitigation measures and their locations. This will help to provide a tool to navigate to the various measures and features specific field site locations.

• Develop and prepare a report for USACE 404/408 to address PL84-99 levee removal/breach data, information and requirements (draft and final).

• Provide other and overall permit application(s) support as needed.

Task 3. Design Stage 2 (15%) Planning and Pre-Design – Progress the chosen 5% conceptual alternative to 15% as a proof of concept/refinement, prior to progressing the alternative to the 30%/60%/90% design stages.

• Progress the full Setback Levee/Revetment Alternative from the completed 128th ST E Comprehensive Setback Levee Feasibility Study (May 2023) Identify up to three refined options for the SW Quadrant Full Setback Levee/Revetment Alternative from the completed 128th ST E Comprehensive Setback Levee Feasibility Study (May 2023).

• The design objective for the setback feature is to achieve 100-year Level of Protection plus 3- Ft of Freeboard and to withstand erosion forces and impacts. Levee features and segments shall be designed to meet current US Army Corps of Engineers levee certification standards.

• Refinement options of the Full Setback Levee/Revetment Alternative may include several options, shall incorporate significant terrain modifications, updated hydrologic and hydraulic modeling, existing and proposed features, in which the completed feasibility study did not incorporate. This includes proposed features for the Rhoades Lake Road Corridor project and McCutcheon Road Canyon Falls Creek Culvert Replacement projects.

• Setback feature design alternatives and elements must meet the following criteria:

o Remove approximately 3,500 linear feet of existing levee face rock.

o Notch levee fill material in several places.

o Include a new setback levee structure of approximately 4,200 linear feet or a combination of a setback levee structure and other bank protection measures conducive to fish habitat.

o Reconnect the river to approximately 60 acres of floodplain.

• Full Setback Levee/Revetment Refinement options will include conceptual level design drawings and cost estimates.

• Include a Risk Assessment for each identified refined option. Risk Assessment shall include environmental, permitting issues and concerns, and property rights.

• Prepare a technical information report of the refinement options, including drawings, cost estimates, maps and other associated documents.

• Conduct up to two meetings with PPW-SWM to review refinement options leading to the selection of a preferred alternative, by PPW-SWM.

• Prepare a Public Outreach Plan in collaboration with PPW-SWM and the Pierce County Communication Department.

Task 4. Design Stage 3 (30%)

• Develop and prepare draft and final 30% engineering construction design plans, applicable details, special notes, for the selected preferred alternative (see Attachment 2 for summary of 30% design minimum content.

• Finalize Property Acquisition Plan.

• Prepare cost estimates to acquire the properties identified in the Property Acquisition Plans.

• Other Associated Tasks and Items include (but not necessarily limited to) the following:

o Cover Sheet o Key and Vicinity Maps o Legend o Survey Information o Summary of Quantity Tables

• Prepare construction cost estimate for the selected preferred alternative. This includes materials and associated quantities.

• Prepare draft and final Basis of Design Reports, for the 30% Stage Gate.

• Prepare draft and final Drainage Reports, for the 30% Stage Gate.

• Incorporate measures and features to protect the existing terrace bank and adjacent land/property from river migration and erosion.

• Include recommendations for Geotechnical Investigation and Analysis that will be needed for 60% design level plans.

• Utilize PPW-SWM drawing sheet templates.

• Final Risk Assessment.

• Address and prepare responses to review comments from public and stakeholder outreach events.

• Develop and prepare a Recommended Delivery Strategy and Timelines for each of the NE, SW, NW, and SE Quadrant Setback projects.

Task 5. Stage 4 (60%) Engineering Design & Construction Plans

• Advance project from 30% Engineering Design Construction Plans to 60% Engineering Design Construction Plans (see Attachment 2 for 60% design minimum content).

• Address and prepare responses to review comments from public and stakeholder outreach events.

• Perform GeoTechnical Engineering Analysis, Evaluation, and Investigation for the proposed setback levee/revetment designs.

• Other Associated Tasks include (but not necessarily limited to) the following:

• Develop and prepare 60% engineering design construction plans for the proposed levee/revetment designs that also include the following tasks and items (see Attachment 2 for summary of 60% design minimum content):

o Levee/Revetment prism and armoring design. Revetment segments of the setback features shall use bio-engineering stabilization protection measures and features.

o Existing Utility Locations and Identify if Utility Relocations are needed.

o Designs and details for proposed levee prism and revetment features.

o Levee and revetment armoring designs and details.

o Identify and incorporate mitigation measures for impacts identified in the Preliminary

Engineering level of engineering designs, plans, profiles, cross sections, and details.

o Identify and design Engineered Log Jams and details.

o Include Engineering Design Construction Plan notes.

o Includes Stormwater Pollution Prevention Plan and Notes.

o Includes Summary of Quantities Tables.

o Associated Notes (i.e. Construction, Sequence, and other similar notes).

o Clearing and Grubbing Plans.

o Proposed Existing Levee Removal and/or Breaching Plans and Details.

o Levee/Revetment Tie-In to Existing Levee Plans and Details (Upstream and Downstream

Ends) o Planting Plans and Notes.

o Traffic Control Plans (coordination with PPW-OCE Traffic Division is required).

• Incorporate maintenance access measures and features.

• Perform Final Zero Rise Hydraulic Analysis and Modeling for Floodplain Permit Review.

• Refine Construction Quantity and Cost Estimates

• Refine draft and final Intermediate Basis of Design Reports.

• Refine Drainage Reports.

• Develop and prepare draft Engineering Design Contract Plan Specifications.

• Refine and finalize Environmental Evaluations, Assessments, and Mitigation Plans, as needed.

• Attend two meetings with PPW-SWM project staff during the intermediate design phase.

Task 6. FEMA Conditional Letter of Map Condition (CLOMR): NE, SW, NW, and SE Quadrant Setback Levee/Revetment (Stage 4)

• Finalize Hydrologic and Hydraulic Analysis and Modeling.

• Provide support to PPW-SWM for FEMA CLOMR requirements and procedures. This will involve attending meetings with FEMA to determine an allowable and FEMA approved approach to pursue and obtain a FEMA CLOMR for both the NE and SW Quadrant setback projects and respective to the RLRC project.

• Prepare draft and Final FEMA MT-2 Application including all required supporting documentation, narrative, forms, analysis, modeling, maps, exhibits, and other associated items.

• Manage FEMA CLOMR Application, Submittal, Review, and Approval Process. This includes responding to multiple rounds of FEMA review comments, preparing and submitting required documents, maps, analysis, modeling, etc.

• Timeframe for FEMA CLOMR Review and Approval process assumes 1.5 years, from MT-2 Application Submittal.

Task 7. Public Outreach and Education Support: SW Quadrant Setback Levee/Revetment (Stage 3)

• Attend up to two (virtual and one In-Person) Community, Landowner, and Stakeholder Outreach meetings/events for both 30% and 60% design level plan phases.

• Provide map exhibits and handouts that clearly illustrate and explain the proposed design and identified refined options.

• Prepare a Q&A Hand-out and Talking Points Summary.

• Document public outreach discussions, input and comments.

• Address and prepare responses to public and stakeholder outreach comments.

• Coordinate and support PPW-SWM and the Pierce County Communication Department staff for outreach and community meeting effort and events.

• Coordinate and collaborate with PPW-SWM to address submitted public comments and to help prepare comment responses. Comments received may result in design refinements.

• Attend One Field On-site Meeting with Regulatory and Tribal Resource Agencies. Provide drawing map exhibits of the proposed designs and identified refined options and preferred selected refined option, for the field site meeting.

Task 8. Stage 5 (90% PS&E) and Stage 6 (100% PS&E) Final Engineering Design

• Prepare draft and final Engineering Design Construction Plans for both 90% and 100% design level plans.

o Prepare the 90% and 100% design plans upon knowledge and evidence that FEMA will issue the CLOMR Approval, without any further significant review comments.

• Prepare draft and final Engineering Design Contract Plan Specifications, for both 90% and 100% design level plans (see Attachment 2 for summary of 90% and 100% design minimum content).

• Prepare Final Construction Quantity and Cost Estimates.

• Prepare a Final Basis of Design Reports.

• Prepare Final Drainage Reports.

• Attend two meetings with PPW-SWM project staff during the final design phase.

• 100% Final Engineering Design Construction Plans include professional engineer stamped seal, signature, and date on drawing sheets.

• 100% Final Plans plotted on full size plan sheets, that may possibly be needed.

• 100% Final Plans 11” x 17” reduced sheet size (PDF).

• Final 100% PS&E Package

• Prepare a formal Contract Proposal Pay Items Table Form

• Prepare draft and final Operation and Maintenance Manuals.

• Prepare draft and final Monitoring Plans.

Task 9. Other Items Associated with the SW Quadrant Setback Levee/Revetment

• Submit Engineering design construction plans, contract specifications, reports.

• All documents developed and prepared for the above scope of work summary shall be provided. to PPW-SWM. This includes but is not limited to the following:

o Native word, excel, PowerPoint, AutoCAD drawing files, PDF, and other applicable digital files o Native H&H model files.

o Calculations.

o Bathymetry survey files.

o All supporting documentation including map exhibits, notes and other applicable files and documents.

o Other applicable data, documents, and information not listed above.