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HomeMy WebLinkAboutAdden 5 CAG-15-224,Add en#5-19 L\fY o., + + FN70e� AMENDMENT NO. 5 TO AGREEMENT FOR CEDAR RIVER 205 PROJECT LEVEE RECERTIFICATION CAG-15-224 THIS AMENDMENT, dated June 19, 2019, is by and between the City of Renton (the "City"), a Washington municipal corporation, and Tetra Tech, Inc. ("Consultant"), a Washington Corporation. The City and the Consultant are referred to collectively in this Amendment as the "Parties." Once fully executed by the Parties, this Amendment is effective as of the last date signed by both parties. Whereas, the City engaged the services of the Consultant under Agreement CAG-15-224, dated December 7, 2015, to provide necessary services for the Cedar River 205 Project Levee Certification (referred to herein as the "Agreement"); Whereas, the Parties wish to amend the Agreement to change the scope of work, change the time for performance, and change the compensation in order to design and permit the improvements needed for certification. NOW THEREFORE, It is mutually agreed upon that CAG-15-224 is amended as follows: 1. Scope of Work: Section I, Scope of Work, is amended to add work as specified in Exhibit A-5, which is attached and incorporated herein. 2. Time of Performance: Section V, Time of Performance, is amended pursuant to the schedule(s) set forth in Exhibit B-5. All Work shall be performed by no later than July 1, 2022. 3. Compensation: Section VI, Compensation, is amended so that the maximum amount of compensation payable to Consultant is increased by $724,608 from $603,086 to $1,327,694 plus any applicable state and local sales taxes. The additional compensation shall be paid based upon Work actually performed according to the rate(s) or amounts specified in Exhibit C-5, which is attached and incorporated herein. 4. All terms of the Agreement not explicitly modified herein shall remain in full force and effect and such terms shall apply to Work performed according to this Amendment as if fully set forth herein. IN WITNESS WHEREOF, the Parties have voluntarily entered into this Agreement as of the date last signed by the Parties below. CITY OF NTON CONSULTANT r` By: By• Denis Law William Fullerton Mayor Vice President, Tetra Tech Inc. -"7�f���' Jam( /1 2c/ Date .a!,`.{ p F 104`4,„ Attest *o� ,..r�"" 1n1'4,, ''�.�, �aI /6t * SEAS, 62" Z '� ,\ Jason A.Seth City Clerk . 4/ED SEQ;6`\\`� Approved as to Legal Form By: Shane Moloney Renton City Attorney Contract Template Updated 03/12/2019 (I) PAGE 2 OF 2 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III EXHIBIT A-5 CEDAR RIVER 205 PROJECT LEVEE CERTIFICATION PHASE III - ENGINEERING DESIGN SCOPE OF WORK OVERVIEW The following scope of work is to provide professional engineering consulting services to design improvements and perform permitting necessary to certify the Cedar River 205 Levees in accordance with Federal Emergency Management Agency(FEMA) requirements as codified in 44 CFR Section 65.10. The levee system is located between Lake Washington and approximately the Williams Avenue South Bridge and is approximately 2.5 miles in length (1.25 miles on each side of the river). The certification project is a multi-phase effort. Phase I,the Needs Assessment effort; and Phase II, Engineering Analysis and Certification have been completed. Phases III (Engineering Design) and IV (Construction Engineering Support), were optional phases only necessary if structural improvements were required of the levee system to meet FEMA certification standards. As structural improvements were determined to be necessary in Phase II,this scope of work covers the necessary Phase III tasks to design the structural improvements, as well as all necessary environmental permitting, including showing compliance with the Endangered Species Act(ESA) as required by FEMA for levee certification. The effort includes development of Section 408 permit required by the US Army Corps of Engineers (USACE)to modify the federally authorized and constructed project. The Scope of Work is detailed below.The Schedule to complete the work is included as Exhibit B-5.The Cost Estimate associated with performing the scope of work is provided in Exhibit C-5.An Anticipated List of Plan Sheets is provided in Attachment 1. Improvement Locations addressed in this Scope of Work are provided in Attachment 2. PHASE III — Engineering Design, Permitting and Environmental Compliance Scope of Work Phase II included the technical engineering analysis required for certifying the levees and the compilation of the certification report. Phase III advances the certification process by completing the design of the improvements identified based on the analyses that were conducted in Phase II.Three design submittals will be prepared: 30%, 75%,and 100% (Final)design. Permitting and documentation of ESA compliance will start after the 30%design level is completed and be submitted at the time of the 75%design. This will involve a slight repackaging of the CLOMR certification report and its technical appendices.The final products are design drawings of levee improvements and all relevant permits, an updated Levee Certification Report and associated technical memoranda, and preparation of all required CLOMR application documents, including confirmation of ESA compliance. The USACE Section 408 approval will be started with the 30%designs and submitted based on the 75%designs.The Section 408 submittal will involve repackaging a Basis of Design report that is accompanied by report from the various engineering disciplines. ESA compliance and NEPA are also a part of the Section 408 approval. Task 1 - Project Management and Meetings Project management activities required for the completion of the Levee Improvement design (henceforth referred to as"design")are described below. A-1 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III Subtask 1.1—General Management Prior to the kickoff meeting,the CONSULTANT will prepare and submit a draft project schedule to the CITY that details activities and clearly defines the critical path work elements. It will also include the time frame associated with uncertainties associated with approvals of permits and other submittals by agencies.The CONSULTANT and the CITY will discuss this schedule and the Kickoff meeting and decide on the best assumptions to on review periods to incorporate in the schedule. It will also be determined what tasks will go forward while approvals of submittals are awaiting. If there are risks associated with going forward with certain tasks or subtask before receiving an approval, these will also be identified and discussed to help inform scheduling decisions. The schedule will be updated after the Kickoff meeting and subsequently updated monthly or as needed. Additional project management activities will involve, team management, invoicing and budget monitoring. Subtask 1.2 —Coordination Meetings Five coordination meetings with the client will be held during Phase III. Each will be a 2-hour meeting at the City of Renton.The first will be a kickoff meeting. The remaining three will occur after submittal of the 30%,75%and 100%. The fifth meeting will occur after the updated certification report has been submitted to the City and will consist of reviewing and discussing the findings of the certification report as well as any system upgrades identified. Up to five staff from the consultant team may attend each meeting:the PM,the lead Geotechnical Engineer,the lead Hydraulic Engineer,the lead Landscape Architect,and the Lead Environmental Scientist(permitting). Subtask 1.3 — Bi Weekly 30 Minute Phone Call Bi-weekly 30-minute calls to discuss project progress will be held between the Renton PM and the Tetra Tech PM.Twelve (12) meetings are assumed for the duration of Phase III.Task leaders will attend those meetings when there are specific issues that need to be discussed in detail for their task. Prior to these meetings, internal staff progress and coordination meetings will be conducted. Subtask 1.4—Site Visit and Kickoff Meeting The Project team will participate in the combined site visit and kickoff meeting at the outset of the project. Participants will include the Project Manager,Sr. Civil Engineer, Hydraulic Engineer, Sr. Geotechnical Engineer,Structural Engineer and Landscape Architect. Tetra Tech will develop an agenda for the Kickoff Meeting/Site Visit.The site visit will include a walk of project limits and review areas of Improvement including taking photos and notes. It will involve an opportunity for the various disciplines to coordinate their efforts and identify aspects of interest to other disciplines.The meeting will provide an opportunity for each discipline to discuss their aspect of the project in front of City representative from the various departments that will have needs to address and or input to provide during the design. As discussed in Subtask 1.1,the schedule will be discussed and potentially modified at the Kickoff Meeting. Task 1-Assumptions: • Coordination meetings are 2-hour duration. • Bi-weekly progress meetings are 30-minute duration Phone Call. • 8 hours per attendee are budgeted for the combined kick-off meeting and site visit. • Primary project execution period is approximately 24 months(including FEMA and ESA review periods). A-2 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • Addressing FEMA comments on the certification package is covered in Task 10. • The current proposal does not include Engineering During Construction. Task 1-Deliverables • Five coordination meetings at City of Renton. • Notes and Actions Identified during 30-minute phone calls. Task 2—Topographic Survey The purpose of this task is to collect the survey information needed to support the design effort as well as the FEMA CLOMR submittal. Two types of surveys will be performed, a top of levee/floodwall/high point survey for both design and CLOMR submittal support and a topographic/structural survey. The specifics for each survey are identified below. Subtask 2.1—Levee/Floodwall Highpoint Survey The survey effort will include a profile survey of the top of levee, floodwall, and high point along both sides of the lower Cedar River as shown on Attachment 2.The survey profile will collect measurements at minimum 50-foot intervals and will capture all major grade breaks at the highest points along the river. The survey will be used to finalize the extent of the levee system improvements necessary to meet freeboard requirements, provide tie-in information for the improvements and provide a current system profile consistent with the design survey for the CLOMR submittal. Subtask 2.2 —Topographic/Structure Survey Topographic mapping of the 11 areas as shown Attachment 2 will be provided. The mapping will be of sufficient accuracy and density to provide contours at an interval of one foot.The mapping limits will be as shown on the Attachment 2.The topographic mapping will include: The field survey will locate visible evidence of the following improvements: • Buildings • Curbs • Sidewalks/Paths • Driveways/curb cuts • Pavement-delineation between concrete and asphalt • Pertinent bridge features • Floodwalls • Floodwall/levee closure structures • Adjacent airport infrastructure • Retaining walls and fences—materials and heights • Storm drainage and storm drain structures • Sanitary sewer manholes • Water valve boxes • Electrical power vaults and associated surface features • Telephone pedestals • Natural gas • Cable or fiber optic pedestals • Street lighting A-3 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • Fire Hydrants • Signage • Ponds • Overhead wires, guy wires • Underground utility location paint marks set by others. • Significant trees(4" DBH or larger, diameter as measured at breast height). • Significant landscaping features. Note: Survey crews are not allowed to enter sub-surface vaults. Work will be conducted from the surface, using measure-down techniques. Crews will also not open any structure covers in excess of 80 pounds. The survey data will be referenced to NAD83, SPC WA North (US survey feet) and NAVD 88 (US survey feet). To ensure consistency with the NHC cross-section surveys used for the CLOMR hydraulic modeling, a check-in with control used for the NHC cross section surveys will be performed. Task 2-Assumptions: • The survey crew will have reasonable access to all areas requiring surveys. • For safety reasons personnel are not permitted to enter enclosed utility structures. These structures will be detailed and inventoried only to the extent feasible from the surface. • All electronic mapping standards will be based on APWA drafting standards unless specified otherwise. • Survey field crews may need to perform minor brushing with machetes to conduct this survey, and we have Client's permission to do so. • The City will provide the previously surveyed horizontal coordinates and elevations for the points to check for consistency between the current survey datum and the NHC cross section surveys. • Scope does not include survey support during construction or for as-built documentation for LOMR or USACE post-construction submittals. Task 2-Deliverables • A copy of the survey on electronic media with property and easement lines from assessor's map. Drawing shall be compatible with AutoCAD and shall be one drawing file. • An ASCII file of reduced survey points including the point number,northing,easting,and elevation based on the required horizontal and vertical control to be used. • An electronic AutoCAD file with the triangulated irregular network (TIN) of the digital terrain model for the topographic in Civil 3D. Task 3—Geotechnical Support for 30% Design Provide Geotechnical support including design reviews, analysis and specification recommendations Geotechnical support for the 30%design. Subtask 3.1 - Revise and Develop Design Cross Sections Work with design team to develop levee cross sections for 30% design and review for function and stability. A-4 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III Settlement analyses of the levee embankment were conducted during Phase II that assessed the potential for settlement of the levee to reduce freeboard over time. For Phase III, settlement analyses will be conducted on areas where the levee system will be improved. The settlement analysis will be based on methods from the USACE Engineering Manual 1110-1-1904"Settlement Analysis" and/or standard engineering practice. Subtask 3.2 - Certification Report Revisions and MT-2 Forms • Review project plans and specifications developed for the 30%design submittal and provide input to the design team as necessary. • Revise Phase II analyses to include comparison of existing conditions to proposed conditions developed in Phase III. Revisions will also include presenting multiple analysis methods including circular and block failure analyses with optimized and non-optimized failure surfaces. This work will be performed during the 30% design and updated if necessary at the subsequent design levels. • Revise Levee Stability Analysis, Certification Report to include analysis of modified areas developed in 30% level. Subtask 3.3 - Roadway and Retaining Wall Design and Construction Recommendations • Provide recommendations for embankment reviews to identify preferred alternative and provide geotechnical analysis and design parameters for the 30%level design. • Recommend retaining wall and roadway construction, provide recommendations for pavement design sections,and criteria for design and construction of either cast in place retaining walls or structural earth walls for development of the 30%design submittal. • Create draft and final design memo for team review and comment for the 30%design support. • In support of the developing the 30%design, review project I-Wall design concepts and finalize the November 13, 2017 DRAFT report"Recommendations for Floodwall Analysis,Cedar River 205 Levee Recertification"as appropriate to become part of the Phase III CLOMR submittal package.This will also be included in the Section 408 submittal. Subtask 3.4—Geotechnical Specifications Provide geotechnical specifications or special provisions for inclusion in overall project specifications developed by Tetra Tech.This will consist of contributions to the specifications outline for the 30% design. Task 3-Assumptions: • Specifications will be in WSDOT/APWA format. • Analyses can be performed and submitted in Slope/W. Local USACE district review or a national USACE risk management center review will not require different analysis tools. • Project features being addressed by the design are those presented in the Phase II CLOMR submittal and based on the hydrology and hydraulics presented in the Phase II CLOMR submittal. • No new geotechnical exploration and testing will be required. A-5 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III Task 3-Deliverables: • Settlement Analysis will be incorporated into Geotechnical Levee Analysis and Certification Report. No separate deliverable will be provided for the settlement analysis. • Roadway and retaining wall design recommendation memorandum (internal review Draft and Final)will be provide at the 30%design level. • Geotechnical Levee Analysis Report. Task 4—Environmental Permitting This task includes development of application and supporting materials needed to obtain environmental permits for the project.The project will be required to comply with the City's Shoreline Master Plan (SMP) and the State Environmental Policy Act(SEPA), including documenting project impacts to habitat areas within the riparian buffer and Shoreline Management Zone,which will require habitat restoration and/or mitigation.The permitting process will be initiated after the 30%design level plans are completed.As part of this task,the project team will develop the following environmental reports and application materials:Critical Areas Assessment Report; Conceptual Habitat Mitigation Plan; and SEPA Checklist. Subtask 4.1 — Field Work The Consultant will complete a one-day field assessment to support development of the environmental reports and application materials. Subtask 4.2—Critical Areas Report The Consultant will complete a baseline critical areas assessment based on 30%designs and submit a Critical Areas Report(within approximately 1 month of completion of 30%designs.). City will lead the SEPA and SMP review processes; Critical Areas requirements will be documented as part of the SMP approval. Documents supporting these applications identified in the scope of services will be provided to the City's project manager and/or planning department for City use in documenting these approvals. It is anticipated that the City can complete internal environmental reviews within approximately 2 months of receipt of supporting technical documents. It is assumed that the improvements to the existing levee system are an allowed use according to the City's SMP (Renton Municipal Code Section 4-3-090F.5).The Project will require a Shoreline Substantial Development Permit(SSDP) or be classified by the City as Exempt from the City's SMP.The Critical Areas Assessment Report and Conceptual Habitat Restoration/Mitigation Plan will be used to document no net loss of ecological function in the shoreline environment.The Conceptual Habitat Restoration/Mitigation Plan will incorporate vegetation restoration or enhancement plans designed and prepared by the Project Landscape Architect. Subtask 4.3 —Cultural Resource Investigation Conduct a Cultural Resources Assessment.This will include a literature review and fieldwork of the project area and incorporate findings into a Technical Report. Prior to fieldwork, a Utility Locate will be completed as required under State law. Fieldwork will include pedestrian and subsurface survey to identify archaeological and historic properties within the project area.Subsurface testing will be done using hand-dug shovel probes to a depth of 1 meter or until glacially-originated sediments are A-6 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III encountered.All spoils will be screened through''/<-inch hardware mesh and any identified artifacts will be recorded, bagged, and reburied in their original location. Up to 25 shovel probes will be excavated. One reconnaissance-level historic property inventory form will be completed for the 1953 building at 30 Logan Avenue South (parcel number 722930-0625). The cost estimate includes a contingency effort to be initiated if an archaeological site(not human remains) is identified.The contingency task will record and delineate the site and evaluate it for its potential eligibility to be listed in the National Register of Historic Places. Delineation will consist of excavation of cardinal shovel proves at a 5-meter distance from positive probes. Excavation will follow the same methods used during the initial survey. Up to 16 probes will be excavated.A Washington State Archaeological Site Form will be submitted to the Washington State Department of Archaeology and Historic Preservation. Findings from the Cultural Resources Assessment will be incorporated into the SEPA Checklist. Subtask 4.4—SEPA Checklist The project will require a SEPA checklist to meet City and local permitting requirements. The information created in Tasks 4, 5 and 9 will be utilized to complete a Draft and Final SEPA Checklist. Subtask 4.5 — Hydraulic Project Approval The project will require a Hydraulic Project Approval (HPA) permit from the Washington Department of Fish &Wildlife(WDFW)for activities within the 100-year floodplain to comply with the Washington Hydraulic Code rules(Washington Administrative Code [WAC] 220-660). GeoEngineers will complete a field assessment, and develop and submit an HPA Application, and act as authorized agent for the HPA application on behalf of the City. Task 4-Assumptions: • Other environmental permitting documents will be finalized based on the 75%design submittal. We anticipate submitting a Habitat Mitigation Plan and SEPA Checklist within approximately one month of approval of the 75%design. • City will lead the SEPA and SMP review processes; Critical Areas requirements will be documented as part of the SMP approval. Documents supporting these applications identified in the scope of services will be provided to the City's project manager and/or planning department for City use in documenting these approvals.We anticipate the City can complete internal environmental reviews within approximately 2 months of receipt of supporting technical documents. • It is assumed that improvements to the existing levee system are an allowed use according to the City's SMP(Renton Municipal Code Section 4-3-090F.5). • Project is outside of the jurisdiction of the Clean Water Act and Washington Hydraulic Code Rules and will not require a Section 404 Clean Water Act permit from the U.S.Army Corps of Engineers. • City will provide rights-of-entry, if needed,for the Cultural Resources Assessment. • For the Cultural Resources Assessment, it is assumed that the levees and bridges in the Project Area are less than 50 years old and do not require recording on historic property inventory forms. • If more than one historic property is identified during the Cultural Resources Assessment, an amendment may be necessary. A-7 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • If human remains are found during the Cultural Resources Assessment,an amendment may be necessary. • The U.S.Army Corps of Engineers will submit the final Cultural Resources Assessment Technical Report to the Washington State Department of Archaeology and Historic Preservation. Task 4-Deliverables: • Critical Areas Assessment Report(Draft and Final). • Conceptual Habitat Mitigation Plan (Draft and Final). • SEPA Checklist(Draft and Final). • Environmental Permitting Tracking Matrix updated monthly. • Two draft hard copies of the Cultural Resource Technical Reports(one to City,one to U.S.Army Corps of Engineers) along with a PDF to both parties. • One final Cultural Resource Technical Report electronic format with Historic Property Inventory Form and site form (if site is identified and contingency task is initiated). • WA Dept.of Ecology Notice of Intent for NPDES construction stormwater permit. • Agenda and meeting notes for a NEPA kickoff meeting with the Corps. • Hazardous Materials Discipline Report(Draft and Final). Task 5—ESA Compliance The CLOMR process will require documentation of ESA Compliance.The Section 408 process will require NEPA review and approval.The project team will coordinate with the Corps to identify an appropriate NEPA process for the Project, including setting up and leading a NEPA kickoff meeting with the Corps and the Project design team.The project team will prepare the following NEPA-and ESA-related documents in support of these processes: Biological Assessment(BA) Report; Hazardous Materials Assessment Discipline Report. GeoEngineers will submit the BA and coordinate with the federal ESA agencies and FEMA Lead to document ESA Compliance and to support the Corps' NEPA process. Subtask 5.1 NEPA Coordination and Kickoff Meeting NEPA/Section 408 kickoff should be completed as early in the design process as feasible, once appropriate conceptual or 30%design drawings are available to share with the Corps.The Corps will lead the NEPA process and provide the required NEPA documentation.The consultant team will provide supporting documentation including a cultural resources report, hazmat assessment, and ESA document as identified in this scope, but will not prepare the NEPA document(e.g., Documented Categorical Exclusion [DCE], Environmental Assessment [EA],or Supplemental Environmental Impact Statement [SEIS]). Subtask 5.2—Biological Assessment Report The BA Report will be developed based on the 30%design;we anticipate submittal of the BA to federal ESA agencies within approximately one month of completion of the 30%design. It is estimated to take a minimum of two additional months and up to 135 days to obtain ESA concurrence. Subtask 5.3 —Endangered Species Act Coordination ESA concurrence will be provided to the FEMA Lead in support of the CLOMR application and to the Corps in support of NEPA. A-8 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III Subtask 5.4— Hazardous Materials Investigation A Hazardous Materials Discipline report will be completed as a draft and a final version of a Right-Sized Hazardous Materials Discipline Report, complete with maps/figures, applicable data, and photos, including two (2) document review cycles with comment resolution per the deliverable/report. The methodology for this Hazardous Materials Discipline Report is as follows: • Initial Site Screening: Review the results of a federal, state, local and tribal environmental database search (e.g., Environmental Database Resources [EDR] Report)for listings of sites with known or suspected environmental conditions on or near the Project, generally within the search distances specified by ASTM International (ASTM)Standard E 1527 13. • File Review and Site Reconnaissance: Review pertinent historical files for suspect sites identified by the database review that have a potential to affect acquisition decisions and construction activities due to the possible or known presence of contaminants. Pertinent files for suspect sites will be reviewed to identify the nature and extent of any known contamination, completed remedial activities and the effect these sites may have on environmental conditions within the project corridor.This task will be accomplished by performing the following activities: o Review publicly available records from Washington State Department of Ecology (Ecology) at their office, or available electronically for moderate and high-risk sites. o Review available geologic literature and topographic maps to evaluate surface drainage paths as well as groundwater depth and flow direction in the study area. o Review available aerial photographs to evaluate historical uses at suspect sites. o Review fire insurance maps as necessary. o Complete a site reconnaissance as accessible from the right-of-way or if ROE is granted. • Final Site Screening:Screen suspect sites based on their location relative to ROW construction areas and additional site-specific environmental data available in regulatory agency files.This screening process will identify conditions that represent the potential to significantly affect the ROW acquisition areas, design, property acquisition or construction. • Mitigation Measures: Evaluate potential impacts that known or suspected contamination may have on project development, including property acquisition and construction activities and potential environmental cleanup or soil handling costs. Identify potential mitigation measures and options to minimize potential impacts of hazardous substances to the proposed project. Task 5-Assumptions: • Other NEPA disciplines that may be requested by the Corps are not included in the project team's scope.These may include Social and Community Effects/Environmental Justice, Noise, etc. A-9 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • ESA review will result in an informal consultation (i.e., Not Likely to Adversely Affect listed species and designated critical habitat) which will be documented by the lead federal ESA. agencies(Assume Corps of Engineers is lead during the 408 process) in a Letter of Concurrence. • The project is anticipated to qualify for a NEPA Categorical Exclusion in accordance with Page D- 7(Section D-4.e)of Appendix D to the Corps of Engineers Policy Guidance Circular#EC 1165-2- 220 (10 September 2018) and 33 CFR 230.9(b). Task 5-Deliverables: • Agenda and meeting notes for a NEPA kickoff meeting with the Corps. • Biological Assessment(BA) Report(Draft and Final). • Hazardous Materials Discipline Report(Draft and Final). Task 6—30 Percent Design The Tetra Tech team will advance the current conceptual designs of the improvements identified in the Phase II CLOMR to the 30 percent level (Geotechnical support for Task 3 will be conducted under Task 3).Attachment 1 provides the anticipated Sheet List.Thirty percent design plans will be prepared for the areas requiring improvements as listed below: • Right Bank Sta 40+60—Improve transition between levee/floodwall. • Right Bank Sta 54+50 to Sta 55+20—Raise levee/sidewalk. • Right Bank 57+50 to Sta 58+90—Floodwall or embankment levee. • Left Bank Sta 1+30 to Sta 3+10—Raise levee for freeboard. • Left Bank Sta 20+35—Improve transition between levee/floodwall. • Left Bank Sta 26+60 to Sta 35+20—Raise floodwall from Sta 26+60 to about 30+50. • Raise left bank levee from about Sta 30+50 to Sta 35+20. • Left Bank Sta 56+75 to Sta 58+00—On the left bank from Sta 56+75 to Sta 58+00,the levee embankment crown was identified as being too narrow.The area is confined by the river on one side and a roadway on the other.To increase the width of the levee crown in this confined area, it was determined that adding retaining wall at the landward tore of the embankment was the preferred approach. Evaluate up to three concepts(structural earth wall, reinforced steep slope, and cast in place wall based on WSDOT standard retaining walls)for minimum embedment criteria and construction limitations. • Left Bank Sta 59+60 to Sta 61+05—Raise wall and levee for freeboard. Evaluate two wall concepts(segmental block retaining wall and cast in place flood wall)for minimum embedment criteria and construction limitations. Finalize analysis of selected alternative in one cross section. Subtask 6.1 —30% Landscape Design Landscape design will be primarily focused on the right bank from stations 57+50 to 58+90 (the Renton Senior Activity Center). Landscape design will include coordination with Renton Parks Department and City Community Services staff,as well as the structural and geotechnical design teams, and will be focused on producing construction drawings which will consist of the following items: • Landscape Planting Plans-These plans will include graphic locations of areas to be planted. A-10 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • Landscape Details-Typical details for planting installation, soil preparation, planting schedules and planting cross sections. • Landscape Specifications—Outline of specification content (WSDOT/APWA format). • Landscape Construction Cost Estimate-Anticipated bid items and unit prices for the cost estimate. Subtask 6.2 —30%Civil Design Civil engineering design efforts will be performed at all improvement locations and will integrate the efforts of the other design disciplines(hydraulic engineering, structural engineering,geotechnical engineering, landscape architecture and land surveying). Specific items to be produced by the civil engineering team include the following. • Erosion Control Plans—These plans will implement erosion control features and BMP's for the project. • Site Plans--These plans will include the locations of new or improved floodwalls,fill areas and grading listed above. • Civil Details--Sections and details for constructing fill areas and floodwalls. • Civil Specifications--This task includes a list of anticipated technical construction specifications in WSDOT/APWA format. • General Estimate of Probable Construction Costs--anticipated bid tabs and unit prices for the cost estimate. Subtask 6.3 —30% Structural Design In Phase II,a structural analysis and evaluation was performed for the floodwall sections in accordance with FEMA and USACE requirements for floodwall design, using the USACE computer program "CWALSHT"to analyze the different I-wall sections for stability(USACE, 2007) in accordance with USACE ETL 1110-2-575 "Evaluation of I Walls." For Phase III,the structural analysis will be updated to include all structures where improvements are designed, as well as the floodwall at the upstream limit of the levee system on the right bank. On the left bank from Sta 56+75 to Sta 58+00, a retaining wall will be designed to allow for the levee to be widened where it transitions into a floodwall. At the other locations(LB 26+66 to 35+20, LB 59+60 to 61+05, RB 75+50 to 58+90)there are existing structures that will require modification to meet freeboard requirements. Structural design will include coordination with the landscape architecture and geotechnical design teams and will be focused on producing construction documents which will consist of the following items: • Structural Details--Sections and details for constructing the floodwalls. • Structural Specifications--This task includes a list of anticipated technical construction specifications in WSDOT/APWA format. • General Estimate of Probable Construction Costs--anticipated bid tabs and unit prices for the cost estimate. Task 6-Assumptions • The previous hydrology and freeboard analysis, including R&U with sedimentation,and the geotechnical approach to the seismic stability will be accepted by FEMA as they were in the first CLOMR submittal.This means that the features from Phase 2 conceptual design will be sufficient to achieve certification (This assumption applies to all levels of design). A-11 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • At the closure structures,the City will use sandbags to provide closure we are designing(there are all in the area of Logan Avenue and the Senior Center), and project team will not need to design stop logs or other closure means (This assumption applies to all levels of design). • The Task 2 top of levee survey will not identify any areas of deficiencies that were not identified in the 2016 (This assumption applies to all levels of design). Task 6-Deliverables • 30% Plans in PDF and AutoCAD formats, Specifications, and General Estimate of Probable Construction Costs. Task 7—75% Design Comments from the City on the 30%design plans along with increased level of detail will be incorporated into the 75%design level plans. The specifications and cost estimate will also be updated. The 75%design level drawings will be submitted to USACE for Section 408 review and approval. Subtask 7.1—75% Landscape Design Landscape design will be updated to incorporate comments from the 30%design level plans and will consist of the following items: • Landscape Planting Plans--These plans will include graphic locations of areas to be planted. • Construction Details--Typical details for planting installation, soil preparation,and irrigation system components. • Irrigation Plans-(TBD based on whether temporary or permanent irrigation is deemed appropriate). • Landscape Architectural Specifications-Draft specifications in WSDOT/APWA format • Construction Cost Estimate-Updated Estimate from 30%submittal. Subtask 7.2 —75% Civil Design Civil engineering design will be updated to incorporate comments from the 30%design level plans and additional details.This effort will consist of the following items: • Erosion Control Plans—These plans will implement erosion control features and BMP's for the project. • Site Plans--These plans will include the locations of new or improved floodwalls,fill areas and grading listed above. • Civil Details--Sections and details for constructing fill areas and floodwalls. • Civil Specifications—Draft specifications in WSDOT/APWA format. • Construction Cost Estimate--Updated Estimate from 30%submittal. Subtask 7.3 —75%Structural Design Structural design will be updated to incorporate comments from the 30%design level plans and will consist of the following items: • Construction Details--Typical sections and details for constructing the floodwalls. • Construction Specifications--This task includes draft technical construction specifications. A-12 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • Construction Cost Estimate-- Updated Estimate from 30%submittal. Subtask 7.4—75% Geotechnical Design Geotechnical aspect of review comments on the 30%design of the retaining walls(new and modified), modified levee sections, modified floodwall sections, and roadways/pavement sections.This task provides geotechnical support for the 75%design and the USACE Section 408 Submittal and includes the following items: • Review project plans and specifications developed or advanced by the project team. • Revise slope stability analyses to include comparison of existing conditions to proposed conditions. Revisions will also include presenting multiple analysis methods including circular and block failure analyses with optimized and non-optimized failure surfaces. • Consolidate analysis of modified areas into document for USACE Section 408 submittal. • Provide geotechnical input WSDOT/APWA format to draft plans and specifications. Task 7-Assumptions • Slope stability analyses can be performed and submitted in Slope/W. Local USACE District (Seattle) review or a national USACE Risk Management Center review will not require different analysis tools or methods. Task 7-Deliverables • 75% Plans in PDF and AutoCAD formats, Draft Specifications, and Updated Cost Estimate. • Geotechnical Levee Analysis Report. Task 8—Improvement Design—100% Comments from the City on the 75%design plans will be incorporated into the 100%design level plans, specifications and cost estimate. Subtask 8.1- 100% Landscape Design Landscape design will be updated to incorporate comments from the 75%design level plans and will consist of the following items: • Landscape Planting Plans--These plans will include graphic locations of areas to be planted. • Landscape Details--typical details for planting installation,soil preparation, and irrigation system components. • Irrigation Plans (TBD—based on whether temporary or permanent irrigation is deemed appropriate) • Construction Specifications--This task includes updated technical construction specifications • Construction Cost Estimate-- Bid tabs and unit prices for the cost estimate. Subtask 8.2— 100% Civil Design Civil engineering design will be updated to incorporate comments from the 75%design level plans and will consist of the following items: • Erosion Control Plans—These plans will implement erosion control features and BMP's for the project. A-13 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III • Site Plans--These plans will include the locations of new or improved floodwalls.,fill areas and grading listed above. • Civil Details--Sections and details for constructing fill areas and floodwalls. • Civil Construction Specifications--This task includes 100%technical construction specifications • Construction Cost Estimate--Bid tabs and unit prices for the cost estimate Subtask 8.3 — 100% Structural Design Structural design will be updated to incorporate comments from the 75%design level plans and will consist of the following items: • Construction Details--typical sections and details for constructing the 100%floodwalls. • Construction Specifications--This task includes 100%technical construction specifications. • Construction Cost Estimate-- Bid tabs and unit prices for the cost estimate. Subtask 8.4— 100%Geotechnical Design Geotechnical support during 100%design will involve review of geotechnical aspects of the plans and specifications developed by the other technical disciplines.This will include any revisions required due to address geotechnical aspects of construction. Task 8-Assumptions • There will be comments from one review cycle of the 100%submittal that the project team will address to produce the final bid documents. Task 8-Deliverables • 100%Plans in PDF and AutoCAD formats, Specifications,and Cost Estimate. • There will be comments from one review cycle of the 100%submittal that the project team will address to produce the final bid documents. Task 9—Update CLOMR Submittal and Prepare USACE Section 408 Submittal The body of the certification report summarizes the results of the technical analyses and the report attachments include the supporting information. Under this task, a new CLOMR submittal will be developed.The new submittal will be an update of the material in the original (Phase II)April 2018 CLOMR submitted to FEMA in April 2018.The material will be updated to reflect the 75%design of the modifications identified in Phase II and document compliance with ESA.The following CLOMR Submittal items will be updated from the Phase II work previously completed for the project or added based on the current permitting effort conducted under Tasks 4 and 5.The USACE Section 408 submittal will also be compiled as part of this Task. Subtask 9.1 — Update Structural Attachment to Certification Report The structural engineering analysis to develop the in the 30%and 75%design is performed in Tasks 6 and 7.The structural engineering discussion in the Certification Report and the structural engineering Attachment J will be updated to reflect these analyses. Subtask 9.2— Update Hydraulic Evaluation Attachments to Certification Report The hydraulic analysis performed in Phase II identified the areas requiring improvements to provide the minimum freeboard. For Phase III,the freeboard analysis and R&U analysis will be updated to reflect A-14 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III the improvement design elevations. The hydraulic evaluation will be conducted after the 30%design level plans are completed. It is assumed that the designed improvements will not affect hydraulics at the 100-year discharge. Accordingly,water surface elevations calculated in Phase II will be used to perform the updated freeboard analysis by comparing the previously calculated water surface elevation against the design top-of-levee elevations. For the R&U analysis,the HEC-FDA model will be updated with the design top-of-levee elevations to update the conditional non-exceedance probability at improvement locations.Attachment B and C will be updated to reflect the updated hydraulic analyses. Subtask 9.3 — Update Overall Certification Report and MT-2 Forms The body of the certification report prepared in Phase II will be updated to describe the proposed modifications based on the 75%design and discuss the results of the geotechnical, structural and hydraulic analyses performed and described in further detail in the various attachments.The updated report will also document ESA compliance (developed in Tasks 4 and 5). The CLOMR submittal will be compiled and will include the levee forms(the MT-2 FEMA Form 1— "Overview&Concurrence", Form 2—"Riverine Hydrology& Hydraulic", and Form 3—"Riverine Structures") and all other supporting information.Tetra Tech will submit the package to the City of Renton for review and comment prior to submitting to FEMA for their review and approval.As part of the submittal of the update CLOMR,Tetra Tech will submit payment for the CLOMR filing fee. Subtask 9.4—Compile USACE Section 408 Submittal The project team will modify the engineering materials developed for the FEMA CLOMR submittal to fit the requirements of the USACE Section 408 submittal.The technical appendices from the CLOMR submittal will serve as discipline reports and a basis of design report will be developed from the certification report.The environmental permitting(Task 4)and the NEPA and ESA(Task 5) materials will included as necessary in the Section 408 submittal. Task 9-Appendices May Include: • As-builts of the original Section 205 project(from Phase II submittal). • Plans of Improvements (updated to reflect 75% submittal). • MT-2 Forms(updated to reflect 75%design and environmental compliance). • Previous Inspection Reports (Updated from Phase II submittal if more recent USACE inspections available). • Operations& Maintenance Manual and Emergency Preparedness Plan (from Phase II Submittal with minor updates to reflect proposed improvements including new closures). • Hydrologic/Hydraulic Reports(R&U analysis updated from Phase II to reflect design height of levees and floodwalls). • Geotechnical Report(Updated per Task 3 of this scope of work). • Work Map and Annotated FIRM (Potentially minor updates from Phase II to reflect proposed improvements). Task 9-Assumptions: • Phase III improvements will not affect the channel hydraulics developed in Phase II. • The hydrology developed in Phase II will not be updated and will be accepted by FEMA. • No changes in the design after 30%will be made that require rerunning the freeboard analysis and R&U analysis. • Tetra Tech will be pay the CLOMR filing fee and be reimbursed by the City(estimated at$7,000). A-15 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III Task 9-Deliverables: • Draft and Final certification report.The draft will be reviewed by the City and the final report will represent the Consultant's revisions to the report to address the City's comments. • Updated Technical Memorandum incorporating the improvement design elevations. • Revised Levee Stability Analysis and Certification Report(internal review Draft and Final). • Prepare geotechnical portions of FEMA MT2 forms(levee certification documentation forms). • USACE Section 408 Submittal. Task 10—Respond to FEMA Comments This task involves responding to FEMA comments including coordination with FEMA on the CLOMR submitted under Task 9 of this Scope of Work.After the previous Phase II April 2018 CLOMR submittal, there was extensive coordination with FEMA. However,for resubmittal of the CLOMR in Phase III, it is anticipated that the level of coordination with FEMA will be reduced from Phase II. Based on input from FEMA during the previous CLOMR submittal process,the only remaining issue to resolve is compliance with environmental regulations, in particular,the Endangered Species Act. However, FEMA would not commit that all the documents would not go through the complete review process which could result in new questions and issues to resolve that were not brought up during the previous CLOMR submittal. Therefore, a reserve pool of hours has been established to address potential comments.This task includes the following work items: • Review FEMA comments and participate in a phone call meeting with City staff to discuss approach to addressing the comments. Appropriate staff member from Tetra Tech and GeoEngineers and will participate in this phone call meeting. The consultant team will provide a brief letter to the City that outlines the approach to addressing the comments and the expected level of effort necessary to address the comments. • If necessary,Tetra Tech and GeoEngineers will participate in a phone call meeting with the FEMA reviewers and/or FEMA regional technical representative present and coordinate our approach to addressing the comments on the CLOMR prepared in Task 9 of this scope.The overall purpose of the call would be to develop an understand between the consultant team and FEMA on what is needed and will be provided to minimize the need for time consuming back and forth submittals. • The consultant team will address the comments in a letter to FEMA. If additional information is required, it will be attached to the letter. It is assumed that CLOMR will not be revised and resubmitted (CLOMR submittal is covered in Task 9). Task 10-Assumptions: • One round of comments will be all that is necessary to satisfy FEMA's comments. • There will only need to be one call with FEMA to go over the comments and the consultant team's responses to the comments as well as to refresh FEMA on the previous submittal (April 2018). Potential team participants are the Project Manager, Lead Hydraulic Engineer, Lead Geotechnical Engineer, and Lead Environmental Scientist. Task 10-Deliverables: • Memo to the City summarizing the discussion with FEMA on the response to CLOMR comments including the proposed approach to responding to the comments and identification of any materials to be submitted with the response letter. A-16 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work, Schedule &Fee Estimate—Phase III • Letter to FEMA detailing the consultant team's responses to FEMA's comments and associated attachments if necessary. Task 11 Construction Bidding Support Construction bidding support will be provided to select a contractor to perform construction of the final improvement plans. This will consist of attending a preproposal meeting and assisting answering bidding related questions as requested by the City. Task 11-Deliverables; • Summary matrix of environmental commitments. • Response to bidders, as requested. Task 12 Unforeseen Design and Permitting Changes This task was created to provide a pool of hours to cover unforeseen design changes and permitting needs the come-up as the project is executed.The funds under this task may be distributed to any of the Tetra Tech team members as determined appropriate by the City and Tetra Tech to perform the unforeseen work. Task 12—Assumptions • Fund in this task will be allocated to the appropriate Tetra Tech team members when unforeseen work is identified. • When the need for conducting work covered by this task arises, the Tetra Tech will prepare a scope of work and cost estimate an submit it to the City's Project Manager for approval. Task 12-Deliverables • To be determined and identified in the scope of work for each unforeseen work effort. A-17 CEDAR RIVER 205 PROJECT LEVEES CERTIFICATION Scope of Work,Schedule&Fee Estimate—Phase III EXHIBIT B-5 CEDAR RIVER 205 PROJECT LEVEE CERTIFICATION SCHEDULE A project schedule was developed based on the level of effort for the various tasks, accommodation of review by the City of various submittals and typical agency approval times.This schedule is presented in Table B-5.1. It is estimated that the project will take approximately 24 months to have the Final Bid Documents prepared and obtain approvals from FEMA for the CLOMR and from the USACE for Section 408. However,there are several unknowns in the schedule that are dependent on agency turnaround of submittals.The primary ones are the response from NMFS on the BA,the approval of the CLOMR by FEMA and the approval of the design by the USACE under Section 408. The Project Team proposes that a schedule will be developed that shows the range of the potential anticipate lengths of the various approval processes and bring that to the kick-off meeting to discuss with the City. The schedule will be finalized based on interaction with the City to determine assumptions on approval lengths as well as what tasks can go forward while various submittals are waiting on approval. 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