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HomeMy WebLinkAbout17-070 - Otak Inc - Riverton Creek Flapgate Removal Designit IFN' Tuk RP 11 6200 utl'icenter B uievard, Trukwfla WA 98188 Agreement IINurnber 17-0700) Council Approval N/A CONTRACT FOR SERVICES Amendment #9 Between the City of Tukwila and OTAK, Inc. TIi°mm if C ct l m�w"� .,,� �, �I et ween°m the City f Tuk OTAK, is hereby irnes f s: Section 1: Scope of Services. Work under this contract shall be amended to include reimbursement for direct expenses and costs associated with the additional contract scope of services as described in Exhibit A-1, attached. Section 3. Duration of Agreement Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending December 31, 2023, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than December 31, 2023 unless an extension of such time is granted in writing by the City. Section 4: Payment. Payment is hereby changed to include an additional $21,100.00 for this auul,uu,itional scope of services. See Exhibit S-1. The maximum amount (payable unier this contract as amen eu inclusive of all fees ani other costs shall not excee without express written moifications of the Auuu;reernent sineby the City. All other provisions of the contract shall remain in full force and effect. Dmte7th C T Y OF TU DS DocuSigned by: ACV 1:;;;°:kber y y September 2023. CONT'RA C "'t"C') R 9/7/2023 1 1:08 PM PDT Printed Name: a ° ATTt;: ST/AUT.IP,,,,il;;; II „11),.ICATE:IID DocuSigned by: aurisfti YFLatuxfii Christy O'Flaherty, MMC, City Clerk CA Revised December 2016 539,517 APPROVED AS TO FORM DocuSigned by: Office •f the City At urney EXHIBIT A-9 SCOPE OF WORK DESIGN/ENGINEERING SERVICES City of Tukwila Riverton Creek Flapgate Removal OTAK Project No. 32740 March 2023 Amendment No. 9 Introduction and Background LOCATION: 3225 S 116th St DESCRIPTION: Provide engineering support during additional construction of the Riverton Creek Flapgate Removal Project for contractor correction of tieback wall retrofit. Otak previously provided analysis, final design, bid support, and construction support services for this project. SCHEDULE: The anticipated project schedule is to have notice to proceed in July 2023 with Construction closeout for additional construction support to occur by December 31, 2023. This Scope of Work provides services for additional construction support and is described in detail in the following sections. The following table provides a summary of the contract value for the project as modified by Amendment No. 9. Contract Original Contract Amendment No. 1 Authorized Fee $105,363.00 $39,993.00 Amendment No. 2 Amendment No. 3 Amendment No. 4 Amendment No. 5 Amendment No. 6 Amendment No. 7 Amendment No. 8 Amendment No. 9 Total 0 $37,064.00 $0.00 $37,920.00 $98,112.00 $199,965.00 $0.00 $0.00 $21,100.00 $539,517.00 1 otak K:1Project1327001327401Contract1AMENDMENT 9 Addtl Const Support1Riverton Scope_STR New Task_2023_0724.doc Scope of Work Continued Scopeand Budget �����^��� Modifications ������o x�x���xnn��nn��ns 10.0 Construction Observation Support 10.3 Construction Revision Support (New) 10.3.A Construction Revision Engineering Support Otak will providemdditiona|conmtnuoUonmupportoenvicesbmimdudoon-mitmoboanaationofbebaokvxaU repairs. Repairs are assumed to include removing and reinstalling anchor cover plates, removal of portions of existing paint, preparation of wall surface for painting, and painting the wall. While cover plates are removed, Otak will observe the condition of visible portions of anchors and backfill, and advise the City of actions needed, if any, prior to replacing the cover plates. A summary of site observations will be emailed to the City within five (5) working days of the observation. After completion of the wall repairs, Obakvvi||ed|tthepnaviouwnnamoUUad^FiivertonCnoeh-TigbmckVVaUandEximUngConcneteVVa||Post- Construction Condition" addressing WSDOT comments to include a summary of the wall repairs. A draft memo will be sent to the City for review and for forwarding to WSDOT for review. The final memo will address comments from the City and WSDOT and will be stamped and signed by an Engineer licensed in the State of Washington. If requested, Otak will provide a detail for the tie -back wall face repair that may be adopted by the Contractor. 10.3.B Construction Revision Engineering Support If requested, Mayes Testing will be engaged as a direct cost vendor to provide verification testing for paint thichnemm, structural we|ding, and grout testing. Task 10.3 Deliverables 6 Review comments on Contractor's wall repair plan submittal (email) o Site observation summaries (email) o Draft and final memo summarizing wall repairs and addressing previous WSDOT comments (PDF via email) Task 10.3 Assumptions " Contractor will prepare a Wall Repair Plan submittal for review by Otak and WSDOT (consider reference to correcting defective work) • The City will continue to provide Construction Administration such as management of submittals and primary correspondence with the Contractor and WSDOT. • Up to four (4) days of site observation (8 hours per day) • WSDOT will provide one round of comments on the draft wall memo. Direct Expenses penses Direct expenses to be submitted for reimbursement include: • Mileage/Travel for site investigations and meetings • Testing vendor costs (Testing Vendor: Mayes Terracon) 2 Otak ENDMENT 9 Addtl Consaunpvmmvertunauupv_aTnNew Tunk_2ou3o7u4.doc > E N Q a ^a) U r C N 6 O E N v N > 0z 6 O 1— • U �+- c D • Z Uoa Exhibit B-9 Fee Es (weal) aed le;ol Bul;sal suAeyj s;so3 30J!O ()1e30) )jsel Aq eed lam U 2 (Wo) sJnoH le;ol X 30 X 30 0 O N ai 0 CO M N of 1- t 0 0. O . O 0 .00 0O 0 M ti 0 f0 a 0 U O �a 0. `1 CD COU 0 0 0. y lE 0. O. 2 O O r x 0. y d fQ m E m E To c IL 0 O 01 2 a O 0 a 0 c R 2 0 rn c U c O O M co m 0 0 O 2 EL 0 c m CO N 0 0 0) c 0 U c N 0 O a m J To O H O 0 O O N 0 0 y c 0 LU U 0) 0 O N endment No. 9) Project Total Round (1) Billing rates may vary based on the actual staff performing New Task_2023_0724 NT 9 Addtl Co ct\32700\32740\Co City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070(h) Council Approval N/A CONTRACT FOR SERVICES Amendment # 8 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 3: Duration of Agreement; Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending March 31, 2022, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than March 31, 2022, unless an extension of such time is granted in writing by the City. All other provisions of the contract shall remain in full force and effect. Dated this 15th day of December CITY OF TUKWILA CONTRACTOR HP C7/(Leu 6A-Ge/cg Key: at,,,f15,75S0edcZal,c1,1f1s,,,c Allan Ekberg, Mayor 12/15/2021 ,2021 I PzN WW,AI) Printed Name TYSON"HOUNSEL, P.E. ATTEST/AUTHENTICATED APPROVED AS TO FORM Ch C3/M1 Ke}: Sc7a7c1c1,1,,alsc,SI,JrcaSe0.2S0 Christy O'Flaherty, MMC, City Clerk Office of the City Attorney CA Reviewed May 2020 Page 1 of 1 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070 (g) CONTRACT FOR SERVICES Amendment #7 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 3. Duration of Aoreement Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending December 31, 2021, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than December 31,2021 unless an extension of such time is granted in writing by the City. All other provisions of the contract shall remain in full force and effect. Dated this 6th day of April , 2021. CITY OF TUKWILA CONTRACTOR es.mea via SeamlessDocs.com C7/(Law 6A-Ge/g Key: 1,clad,c11,1e01,,bee0,ftlti J1,55be Allan Ekberg, Mayor 04/06/2021 Digitally signed by 'Russell Gaston, PE, Principal Russell Gaston, PE, Principal Lelcatien: Everett WA Contact info: (425)18RO-237E Date2n'1 fl 4irl '12-94.0e110" Printed Name: A I EST/AUTHENTICATED APPROVED AS TO FORM es.mea seamlessDocs.com Ch/te:dg C36/(etheYMTg Key,ea.255.:1,0J1e,afccIff1,31f05, eSignecl via SeamlessDocs.com cj' oe. (1,5)adi-eK Key: ,19009,003Sta,c1,11,1oaboze.1 Christy O'Flaherty, MMC, City Clerk Office of the City Attorney 1/1 CA Revised December 2016 Page 1 of 1 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 17-070(0 Council Approval 6/15/20 Agreement Number; CONTRACT FOR SERVICES Amendment #6 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 1: Scope of Services. Work under this contract shall be amended to include reimbursement for direct expenses and costs associated with the additional contract scope of services as described in Exhibit A-6, attached. Section 4: Payment. Payment is hereby changed to include an additional $199,965 for this additional scope of services. See Exhibit B-6. The maximum amount payable under this contract as amended inclusive of all fees and other costs shall not exceed $518,417.00 without express written modifications of the Agreement signed by the City. All other provisions of the contract shall remain in full force and effect. Dated this 6 day of CITY OF TUKWILA AIIan Ekberg, Mayor ATTEST/AUTHENTICATED Christy O'Flaherty, MMC, City Clerk CA Revised December 2016 , 2020. CONTRACTOR Printed Name: APPROVED AS TO FORM asi,va SeamleasDoca.cnii, aWeeZ' Z'O=Ggra-117.7"'"'" Office of the City Attorney Page 1 of 1 EXHIBIT A-6 SCOPE OF WORK DESIGN/ENGINEERING SERVICES City of Tukwila Riverton Creek Flapgate Removal OTAK Project No. 32740 May 2020 Amendment No. 6 Introduction and Background LOCATION: 3225 S 116th St DESCRIPTION: Provide engineering support during construction of the Riverton Creek Flapgate Removal Project. Otak previously provided analysis, final design, and bid support services for this project. SCHEDULE: The anticipated project schedule is to have notice to proceed in June 2020 with Construction closeout for construction support to occur by January 30, 2021. The City will provide continued construction management through the plant establishment period. This Scope of Work provides additional services for construction support and is described in detail in the following sections. The following table provides a summary of the contract value for the project as modified by Amendment No. 6. Contract Authorized Fee Original Contract $105,363.00 Amendment No. 1 $39,993.00 Amendment No. 2 $37,064.00 Amendment No. 3 $0.00 Amendment No. 4 $37,920.00 Amendment No. 5 $98,112.00 Amendment No. 6 $199,965.00 Total $518,417.00 1 otak K:\project\32700\32740\Contract\AMENDMENT 6 CONST SUPPORT\Riverton SOW Amend 6 Const Support_2020_0519.doc Scope �� �� of WorkContinued Scope and Budget �� ��U� � x�x��"um��nnons 1.0 Project Managememt 1.1 Project Management and Coordination OTAK will coordinate with the City of Tukwila on a regular basis by phone and email to keep the City's project manager informed about projecprogress, projecissues and schedule. Regular communication with the City will occur on a bi-weekly basis, and a status report will be provided to the City before each meeting summarizing the status of action items and deliverabies, Project monitoring and reporting will include the coordination of construction engineering support team mennbera, internal project schadu|ing, and the preparation of a monthly progress report and a monthly billing statement. Task 1Deliverables • Bi -weekly project reports submitted to the City by email (electronic PDF file format) • Monthly progress report and monthly invoice Task 1 Assumptions o The duration of this task is estimated at nine monts, assuming a June 2020 start to construction, Physical Completion for the Contractor by November 2020, and project closeout for Construction Support completed with the City by January 30, 2021. The City will provide continued construction management beyond this date through the Plant Establishment Period, 9.0 Construction Administration Support (New) 9.1 Construction Administration Otak's Office Engineer will assist the City of Tukwila in administration of the construction contract in accordance with the foliowing: • Attend the preconstruction conference and set up daily report forms and other forms as needed. • Prepanetheinida|0noftRecordofK4ateria|aLoyond8ubmitto|sLog(e|e:tronicspn*adeheetfi|e). • Review material submittals, construction sequence schedules, and other items to verify compliance with the contract plans and specifications. • Coordinate with the Construction Inspector throughout the duration listed under Assumptions. Otak will provide support including field meetings with the Construction Inspector as necessary. • Attend progress meetings or make site visits at the frequency deemed necessary to promote effective communication between the City, the Inspector, engineering support staff, and the Contractor. • Review and respond to correspondence and RFI's from the Contractor and others. • Make recommendations to the City regarding changes and with the City's input and approval, negotiate change orders. 2 Otak ENT 6 CONST SOW _Amend oConst 8uppurL202O_On1S.uoo Scope of Work Continued • Prepare construction files and photofor projeccloseout. Task 9.1 Assu • The duration of this task is estimated at nine months, assuming a June 2020 start to construction, Physical Completion for the Contractor by November 2020, and project closeout completed vvith the City by January 30, 2021. • The City will provide the Resident Engineer and the primary Construction Inspector. • The City will be the primary point of contact for the Contractor unless approved by the City to communicate directPy with the Contractor. • Otak will not be reviewing pay estimates or payroll information. • The City will provide the primary construction administration role including record kaeping, submittal intake and approval Iogs, and tracking of quantities. 10.0 Construction Observation Support (New) 10.1 Site Ci il Construction Observation 10.1'A Site Construction Observation The City will provide the primary Construction Inspector to cover the Contractor's schedule on a daily basis. Otak will provide general construction observation support, as requested by the City, for project elements such as: • Temporary Erosion and Sediment Control • Temporary Stream Diversion • Channel Excavation • Streambed and scour protection material placement • Large Woody Debris Inspectors will perform the foliowing tasks: • Observe construction. • Provide field review for items requiring review by Engineer. • Attend the preconstruction conference. • Attend weekly progress meetings. • Complete daily inspection reports. Otak will provide daily inspection reports to the City within one week of the completed work week (electronically and hard copies prior to Contractor pay estimates). • Measure quantities, if requested. • Maintain a photograph log. • Maintain a set of plans, noting changes to the work, to be used as the basis for construction record drawings, along with the Contractor's as -built records. 3 Otak 8CONST GUPPORTV7ivenonSOW Amend 6 Cons8uppnrt_2020_0519.doo Scope �� � of ������ Continued When notified by the Contractor, Otak will participate in a final inspection with the City and compile a punch list. After the Contractor(s) has completed all punch list items, the design team will again inspect the project and estabUshthe physical completion date. Otak's Site Construction Inspector support time is estimated as for 5 days part-time for the Project Engineer (PE), 3 days part-time for a Water Resources Engineer (PE), and 15 days part-time for an Engineering Designer (EIT) with additional time for report preparation. Otak's Construction Observation Support also include 12 days part-time for the Pject Engineer to attend weekly progress meetings in the field. 10.1.B Structural Construction Observation Otak will provide general construction observation support, as requested by the City, for project structural elements such as: • Retaining Wall Demolition • Rebar • Concrete Placement • Bridge Installation This scope assumes 5 days part-time for the Structural Pject Engineer (PE) and 5 days part-time for a structural engineering inspector (PE) with additional time for report preparation. 10'1'C Water Quality Monitoring for In -water Work An Otak water resources engineer that is a Certified Erosion and Sediment Control Lead (CESCL) will provide turbidity testing of the Duwamish River per the monitoring plan that was presented to Department of Ecology during design. This plan includes monitoring turbidity evels from the river embankment upstream and downstream of the mixing zone during in -water work along the Duwamish River. This scope assumes 3 full-time field days for the CESCL and office time for report preparation. 10.1.D Fish Removal An Otak biologist and supporting environmental staffwill provide fish removal services, as required, such as: • Inspection for fish presence prior to and after Fish Screen and Temporary Stream Diversion installation by the Contractor. • Removal of fish entrapped due to Temporary Stream Diversion System • Fish removal during installation of floating silt curtain within the Duwamish River This scope assumes 4 site visits for two Otak environmental staff (one biologist, one support staff). 10.1.E Concrete Testing (Vendor - Mayes Testing) Otak will engage Mayes Testing as a vendor to provide concrete testing for cast -in-place concrete project elements such as: • Pile Caps 4 Otak KApn400h3270O\3274OvCuntnax8xMEwoMswT0CONST SUPPORTxR^mnnnSOW _Amend OConst 8upport_2O2[LU513.Uoc Scope of Work Continued • Bridge Abutment Walis • Existing Retaining Wall Cap The concrete testing services will include field testing of materials and collection of samples and laboratory analysis. Task 10.1 Assumptions • The duration of this task is estimated at six months, assuming a June 2020 start to construction, Physical Completion for the Contractor by November 2020. • The City will provide the primary Inspector with as -requested support from Otak. 10.2 Geotechnical Construction Observation (Subconsultant - GeoEngineers) ineers will provide geotechnical support as a subconsultant as described in the attached scope and fee estimate. 11.0 Record Drawings (New) The Contractor is responsible for providing as -built survey and record drawing markups during construction. Otak will review the record drawing markups and will revise the Construction Plans to conform to the information supplied by the Contractor. The Record Drawings will be prepared in accordance with the City's Record Drawing Requirements. Task 11.0 Deliverables • Record Drawings: Hardcopies — One Set of Mylars (full-size); Electronic — .pdf and CAD files Management Reserve Contingency ontingency If directed by the City, consultant will provide services needed to assist the City for unforeseen tasks related to this project that were not specifically addressed in this scope of work. When requested by the City, the consultant wil provide a scope and budget for the task identified by the City. The consultant will not proceed with the task until written authorization has been provided by the City.The allotted amount for this task is $15,000. Direct Expenses m~m^penses Direct expenses to be submitted for reimbursement include: • MileagefTravel for site investigations and meetings • Reproduction for hard copies ° Postage and Courier • Equipment and Materials for fish removal and water quality monitoring work • Other Misc. Expenses 5 Otak OMENT0CONST SUPPORTVRivortonSOW _Amend OConst Gupport_ 020_0519doc Exhibit B-6 - Fee Estimate City of Tukwila - Riverton Creek Flapgate Removal Otak, Inc., Project 32740 AMENDMENT NO, 6, May 19, 2020 Pro. Mgmt./Design Structural 14nvironmental Water Resource Adinin u Task Description 3- r 1.155 1.0 Project Management and Coordination 1.1 Project Management and Coordination 27 27 9.0 Construction Administration Support 10.1 Construction Administration 84 76 84 76 50 50 12 12 10.0 Construction Observation Support 11.1 Site Civil 0.)nstruction Observation 3.1.A Site Construction Obsei-vation 3.1.13 Structural Construction Observation 3.1.0 Water Quality Monitoring for in -water Work 3.1.D Fish Removal 1)1.2 3.1.E Concrete Testing (Vendor) Geotechnical Construction Engineering Support (Subconsultant) 11.0 Record Drawings 78 30 78 30 31) 32 32 32 32 8 8 50 96 96 P.- 14 14 40 40 4 1-4 v z 2- 41 41 $ 5,72 $5,7: 366 366 $ 49,7E 549,7 20 311 90 90 32 342 188 611 30 64 40 $ 45,62 525,91 58,6 S6,3: $ 4,82 Project Total Hours Billing Rate (including 011 and Profie 5234.61 Total Labor Cost, including Overhead and Profit Direct Expenses Management Reserve Contingency 197 106 5165.53 5172.72 5 32,610 S18,309 5115.15 9,212 44 5136.74 S 6,017 32 561.00 1,952 58 5158.00 $ 9,164 218 5109.40 S 23,851 54 589.82 4,851 789 $ 105,9( Project Total (Amendment No. 6) (1) Billing rates may vary based on the actual staff performing the work. K: \ project \ 32700 \ 32740 \ Contract \ AMENDMENT 6 CONST SUPPORT \Riverton Fee Est_Amend 6 Const Support_2020_051' 17-070(e) Council Approval 3/16/20 City of Tukwila Agreement Number: 6200 Southcenter Boulevard, Tukwila WA 98188 CONTRACT FOR SERVICES Amendment #5 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 1: Scope of Services. Work under this contract shall be amended to include reimbursement for direct expenses and costs associated with the additional contract scope of services as described in Exhibit A-5, attached. Section 3. Duration of Agreement; Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending April 30, 2021, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than April 30, 2021 unless an extension of such time is granted in writing by the City. Section 4: Payment. Payment is hereby changed to include an additional $98,112.00 for this additional scope of services. See Exhibit B-5. The maximum amount payable under this contract as amended inclusive of all fees and other costs shall not exceed $318,452.00 without express written modifications of the Agreement signed by the City. All other provisions of the contract shall remain in full force and effect. Dated this 23 day of 1-\ c.Arc.tN. , 2020. CITY OF TUKWILA e(VGZ_ Allan Ekberg, Mayor 312?/e07.0000/ ATTEST/AUTHENTICATED Christy O'F he y, MMC, Ci rk CA Revised December 2016 CONTRACTOR k Printed Name: Zuss-ol APPROVED AS TO FORM Office of the City Attorney Page 1 of 1 Exhibit A-5 Scope of Work Riverton Creek Flapgate Removal Project City of Tukwila February 6, 2020 Otak Project No. 32740 Amendment No. 5 The City has received comments from granting agencies, permitting agencies, and other stakeholders on the design for the Riverton Creek Flapgate Removal Project. At the request of the City, Otak provided support to provide responses and to modify the design as necessary to address the comments. A monitoring plan and a JARPA major modification have also been requested. In addition, Otak's geotechnical subconsultant has reviewed the revised channel design and they are recommending a second row of tiebacks in the existing west sheet pile wall. The additional tiebacks will also address comment from WSDOT. Additional boring investigations were also recommended to determine soil conditions supporting the proposed east soldier pile wall. This scope provides additional services to incorporate the changes and additions into the current design and then advance the design to final bid documents for construction in 2020. The following table provides a summary of the contract value for the project as modified by Amendment No. 5. Contract Authorized Fee Original Contract $105,363.00 Amendment No. 1 $39,993.00 Amendment No. 2 $37,064.00 Amendment No. 3 $0.00 Amendment No. 4 $37,920.00 Amendment No. 5 $98,112.00 Total $318,452 Exhibit A-5 Scope of Work Continued Scope and Budget Modifications Task I — Project Management The scope for this task is increased to provide project management and coordination for an extended project schedule for anticipated construction in 2020. This includes additional services for regular status update meetings with the City, project management, and preparation of project reports and invoices. Task 4 Permitting, Environmental Review and Coordination 4.1 JARPA Preparation Otak will update the JARPA electronic drawing package initially prepared by the City including overall formatting and adjustment of scales and labels to comply with application requirements. The Washington Department of Fish and Wildlife (WDFW) has requested a Major Modification to the original JARPA to incorporate design revisions made to address comments from the Army Corps of Engineers (ACOE) and Muckleshoot Indian Tribe (MIT). Otak will update the electronic JARPA drawing package with these design revisions and provide and electronic (.pdf) package. The City will prepare the Major Modification Form. 4.7 Permitting Support The level of effort originally estimated for developing response to permitting agency comments has been exceeded based on the comments received. The Task 4.7 scope is increased to provide additional services for continued permitting support. Otak will review email correspondence with multiple permitting agencies and will participate in additional meetings with the City to review agency comments and discuss potential revisions to the design as necessary. Otak will provide written email responses to Departrnent of Natural Resources (DNR) and the Muckleshoot Indian Tribe (MIT) to provide basis of design information and revised drawings to demonstrate how comments have been addressed. Otak will provide additional services to support the permitting process with WSDOT include reviewing comments and providing written responses as requested by the City. 4.8 Monitoring Plan (New) In response to MIT comments, this task provides details for providing a stream and fish passage monitoring plan for a tidal flapgate and culvert removal and pedestrian bridge installation project on K:\project \ 32700 \ 32740 \ Contract \ AMENDMENT 5 \Riverton SOW_Amend 5_2020_0206.docx 2 Exhibit A-5 Scope of Work Continued Riverton Creek, in the City of Tukwila, King County, Washington. The WDFW and ACOE require monitoring for culvert replacements with bridge structures and stream modifications to document proper conditions for fish passage. This task involves preparation of a culvert and stream monitoring plan based on guidance from WDFW protocols for monitoring bridge installation and design from the Water Crossing Design Guidelines (WDFW 2013). Monitoring plan elements will include fish passage data collection: photographs of the pedestrian bridge and the surrounding banks, qualitative descriptive information, and the physical measurements for the bridge and nearby streambeds recommended by WDFW. The monitoring plan will include performance standards for bridge design and function and nearby streambeds appropriate to the project and the stream systems. This task includes coordination with the City, WDFW, and the ACOE. This task will also include coordinating with regulatory agencies and tribal representatives on culvert and stream monitoring planning, goals, objectives, and plan specifics as needed. Assumptions: • Wetland mitigation and monitoring planning is not included in this scope. • Wetland buffer mitigation and monitoring planning is not included in this scope. • The culvert and stream monitoring plan will not include riparian or wetland planting plans. • If needed, up to two (2) two-hour meetings with the City, WDFW, ACOE, and tribal representatives may be included in this task. Task 5 — Final Design The Task 5 work assumes that there will only be one -round of revisions to address WSDOT comments. If further revisions are required, an amendment will be submitted for authorization of contingency funds to address the comments. 5.1 Final Design and Plan Sheets The following changes to the final design and plans will be incorporated at the 90%, 100%, and final bid document stages. 4 Creek Grading, Trail Restoration, and Bank Armoring Design Otak will revise the plans and details to address comments from permitting agencies regarding reducing the boulder drop structure height, adjusting the channel profile and grading, and the size of the logs for woody debris structures. Otak will update the structural calculations to incorporate the final geotechnical report recommendations and design data for submittal to WSDOT. K: \project \ 32700 \ 32740 \ Contract\ AMENDMENT \ Riverton SOW_Amend 5_2020_0206.docx 3 Exhibit A-5 Scope of Work Continued 6 Retaining Wall Design Otak will review the geotechnical soils data and recommendations for the east soldier pile wall that will be provided by the geotechnical subconsultant after supplemental explorations under Task 7. Otak will update structural calculations based on the soil properties at the location of the wall. The assumption is that the geotechnical findings and recommendations will require adjusting the pile length by up to 2'. Further revisions to the east soldier pile wall design, such as an increase in pile depth over 2' or the addition of tiebacks will require additional services and an amendment will be prepared to authorize contingency funds if requested by the City. 5.2 Specifications Otak will revise the Division 2-9 Special Provisions and details to address comments from permitting agencies regarding reducing the size of the logs for woody debris structures. Otak will also prepare special provisions for verifying the existing sheet pile wall depth per WSDOT comments. 5.3 Construction Cost Estimates Otak will revise the quantities and cost estimate to address comments from permitting agencies regarding reducing the boulder drop structure height, adjusting the channel profile and grading, and the size of the logs for woody debris structures. Otak will add construction cost information for verifying the existing sheet pile wall depth per WSDOT comments. 5.4 Preparation of the Contract Manual (New) Per Amendment No. 1 scope, The City would be preparing the master Contract Manual including Division 1 of the Special Provisions. Otak would only prepare Special Provisions for Divisions 2-9 under Task 5.2 to be incorporated in the manual by the City. This Amendment No. 5 scope adds new Task 5.4 for Otak to prepare the master Contract Manual including all Contract and Bid Forms, Amendments to the WSDOT Standard Specifications, and Appendices. Otak will incorporate Special Provisions provided by the City for items designed by the City such as the landscaping work. The City will provide current boilerplate Division 1 special provisions and bid form electronic files (.doc) that Otak will update and fill in information for this project. The City will also provide all permits to be included in the appendices. Otak will submit the Contract Manual to the City for review at the 90%, 100%, and final bid document stages. K: \ project \32700 \ 32740 \ Contract \ AMENDMENT 5 \Riverton SOW Amend 5_2020_0206.docx 4 Exhibit A-5 Scope of Work Continued Otak will provide the final version of the Contract Manual for bid advertisement. Task 7 — Geotechnical Analysis This task includes a geotechnical evaluation by GeoEngineers, a subconsultant to Otak. Previous work under Phase 1 and 2 included review of existing data, explorations for the bridge foundation design, and preparation of a final geotechnical report with recommendations for the proposed project improvements. This contract amendment includes scope and fee estimate for additional services to complete Phase 2 of the project. Our specific scope of additional services is presented below. 7.2 Supplementary Borings and Report Amendment (New) Prepare a draft and final amendment to geotechnical design report for the proposed east soldier pile wall. Our specific scope of services for the design -level report amendment will include the following: • Project vicinity map and site plan showing the location of the geotechnical exploration with • Summary of subsurface soil and groundwater conditions. • Seismic design recommendations based on the current International Building Code (IBC). • Design recommendations for the proposed soldier pile wall 7.3. Design and Permitting Support (New) Provide additional consultation to the design team including reviewing the plans and specifications for conformance to our geotechnical recommendations. If requested, this may also include developing responses to contractor questions during bidding. Provide review of comments from permitting agencies pertaining to the geotechnical analysis and provide written responses. Task 8 — Advertisement and Bid Support Services Otak will provide responses to bidders' questions and assistance to the City, including: 1. Support for Bid Advertisement 2. Attend bid opening 3. Respond to contractor questions 4. Interpretation of contract documents during the bidding process. 5. Preparing addenda to the bid documents. The City will coordinate the postings for bid advertisement. K: \project \ 32700 \ 32740 \ Contract \ AMENDMENT 5 \ Riverton SOW_Amend 5_2020_0206.docx 5 Exhibit A-5 Scope of Work Continued Direct Expenses Additional Reproduction costs for Final Contract Manual and Plans Management Reserve Contingency If directed by the CYO, consultant will provide services needed to assist the City for unforeseen tasks related to this project that were not specifically addressed in this scope of work. When requested by the CiO, the consultant will provide a scope and budget for the task identified bi the CiO. The consultant will not proceed with the task until written authorization has been provided by the Ci*. The allotted amount for this task is $15,000. Optional Task 9 - Construction Engineering Support Services (New) Construction engineering support services may be provided through this contract for the Riverton Creek Flapgate Removal, if requested by City of Tukwila. If requested, Otak and/or GeoEngineers will provide a more detailed scope and level of effort (LOB) for a Supplement. The engineering services during construction will address RFI responses, submittal review, site observation, construction meeting support, record drawing preparation, and other engineering construction services. K: \ project \ 32700 \ 32740 \ Contract \ AMENDMENT 5 \ Riverton SOW_Amend 5_2020_0206.docx 6 {lemZ K e 8 u ?S= Y snau . a >wt0 In• V.I.A9 Nd 1.101, - . s w u $� F{ "' 5e�� a ct Ill`.mi 11 i.101111111101, vku„ m m u r Cel aJAl a 1111331.1111.3 8%J..11.m ,aam8ug $ " �o $ I m m E:r � ` II unua. a PZ 11 M , m 00 C. / ltd'.. .., H e T ^ ill - 5 �9 a 1 1.1IPmject \lartagement and Coordination Permitting, Environmental Review and Coordination t - m a L II• ''' s� III�IIh®l� v c5 �c - II 6 6� 9 is r i _ L g {� II '" ?. t t g p • s $ 'dr .• 0. ., I1IIx C is 6 < 9 q 'd 6 E i O - 6 i°- i a pi:piann Management Reserve Contingency ••� E .t E� a Ig 1 11 F Y F F p w !~ a end 5_2020_0206.rIn t\AMENDMENT 5\Riverl City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070 17-070(d) Council Approval N/A. CONTRACT FOR SERVICES Amendment #4 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 2. Sco . e of Services. The Consultant agrees to perform the services, identified on Exhibit "A-4" attached hereto, including the provision of all labor, materials, equipment and supplies. Exhibit A-4 supplements Exhibits A, A-1 and A-2. Section 4. Payment. The Consultant shall be paid by the City for completed work and for services rendered under this Agreement as follows: A. Payment for the work provided by the Consultant shall be made as provided on Exhibit "B-4" attached hereto, provided that the total amount of payment to the Consultant shall not exceed $220,340.00 without express written modification of the Agreement signed by the City. Exhibit B-4 supplements Exhibit B, B-1 and B-2. B. The Consultant may submit vouchers to the City once per month during the progress of the work for partial payment for that portion of the project completed to date. Such vouchers will be checked by the City and, upon approval thereof, payment shall be made to the Consultant in the amount approved. C. Final payment of any balance due the Consultant of the total contract price earned will be made promptly upon its ascertainment and verification by the City after the completion of the work under this Agreement and its acceptance by the City. D. Payment as provided in this section shall be full compensation for work performed, services rendered, and for all materials, supplies, equipment and incidentals necessary to complete the work. E. The Consultant's records and accounts pertaining to this Agreement are to be kept available for inspection by representatives of the City and the state of Washington for a period of three (3) years after final payments. Copies shall be made available upon request. All other provisions Dated this CITY OF TUKWILA of the contract shall remain in full force and effect. day of , 2018:' CONTRACTOR Allan Ekberg, May ` ''' ` ' `i Printed Name: G CA Revised December 2016 Page 1 of 2 Exhibit A-4 Scope of Work Riverton Creek Flapgate Removal Project City of Tukwila May 30, 2019 Otak Project No. 32740 Amendment No. 4 The City has received comments from granting agencies on the design for the Riverton Creek Flapgate Removal Project which was last submitted as a progress version to the City on 5/18/2018. At the request of the City, Otak developed optional revisions and additional elements for the design to address the comments and enhance habitat function. The City selected the following habitat enhancement options to be incorporated into the design: Low flow augmentation structure, wood snag structures, lower channel boulder toe, channel opening grade step down structures, and Large Woody Debris (LWD) on lower channel banks. This scope provides additional services to incorporate the changes and additions into the current design and then advance the design to final bid documents for construction in 2020. The following table provides a summary of the contract value for the project as modified by Amendment No. 4. Contract Authorized Fee Original Contract $105,363.00 Amendment No. 1 $39,993.00 Amendment No. 2 $37,064.00 Amendment No. 3 $0.00 Amendment No. 4 $37,920.00 Total $220,340.00 Exhibit A-4 Scope of Work Continued Scope and Budget Modifications Task I — Project Management 1.1 Project Management and Coordination The scope for this task is increased to provide project management and coordination for an extended project schedule for anticipated construction in 2019. This includes additional services for regular status update meetings with the City, project management, and preparation of project reports and invoices. Task 5 — Final Design 5.1 Final Design and Plan Sheets The following changes to the final design and plans will be incorporated at the 90%, 100%, and final bid document stages. 3 Temporary Erosion and Sediment Control Design Otak will update the existing plans to include temporary erosion control, shoring, work isolation, and dewatering necessary for construction of the selected habitat enhancement options. Means and methods for shoring, work isolation, dewatering will be the responsibility of the Contractor, but the plans will indicate feasible means for bidding purposes and to meet permit requirements. 4 Creek Grading, Trail Restoration, and Bank Armoring Design (8 sheets) Four plan sheets are added to include details for the Low -flow Augmentation Structure, Wood Snags, Large Woody Debris in Lower Channel and the Channel Step -Down Structures. Otak will also update current plan sheets to include these elements and the revised channel grading to include the boulder toe in lower channel. 5 Bridge Design Otak will update the abutment wall plans and details to increase the wall depth to account for revised channel grading for the boulder toe and channel step-down structures. 5.2 Specifications Otak will provide special provisions for the selected habitat enhancement options including revised special provisions for temporary shoring, work -isolation, and dewatering measures necessary to construct the habitat enhancement options. Special Provisions for the habitat enhancement options K:\project\32700\32740\Contract\AMENDMENT 4\Riverton SOW_Amend 4_19_0530.docx 2 Exhibit A-4 Scope of Work Continued will be provided at the 90%, 100%, and final bid document stages, excluding the landscape and planting Special Provisions to be prepared by the City per Amendment No. 1 scope. Per Amendment No. 1 scope, The City will prepare Division 1 of the Specifications and compile the master Contract Manual including all Contract and Bid Forms, Amendments to the WSDOT Standard Specifications, and Appendices. The City will incorporate Special Provisions provided by Otak. 5.3 Construction Cost Estimates Otak will update the existing construction cost estimate to include the selected habitat enhancement options and revised temporary erosion control, shoring, work isolation, and dewatering items. The cost estimate additions and revisions will be included at the 90%, 100%, and final bid document stages. Deliverables: 1. One half-size electronic plan set at the 90% design stage. 2. One half-size electronic plan set and one full-size hard copy plan set at the 100% design stage. 3. One full-size electronic signed plan set for the bid document package. 4. Special Provisions Division 2-9 in MS Word format at the 90%, 100%, and bid document stages. 5. Engineer's Opinion of Probable Cost at the 90%, 100%, and bid document stages. 6. Comment Responses provided via email at the 90% and 100% design stages. Task 6 — Hydraulic Analyses 6.3 Hydraulic Analysis Otak will update the hydraulic analysis for design of the selected habitat enhancement options including the Low -flow Augmentation Structure at the downstream end of the upper wetland, the boulder toe in the lower channel, LWD in the lower channel, and the Channel Step-down structure at the confluence with the Duwamish River. This will include updating the detailed one-dimensional (1-D) steady flow HEC -RAS model of Riverton Creek for the study reach that extends from the confluence with the Duwamish River to the northbound SR -599 on ramp. Assumptions: • Available survey data are sufficient for the development of accurate cross sections for use in the hydraulic analysis K:\project\32700\32740\Contract\AMENDMENT 4\Riverton SOW_Amend 4_19_0530.docx 3 Exhibit A-4 Scope of Work Continued Deliverables: • Updated Electronic files of the hydraulic model 6.4 Channel Stability Analysis and Hydraulic Design of Scour Countermeasures Otak will update the channel stability analysis and scour countermeasures design to account for the selected habitat enhancement options including the Low -flow Augmentation Structure at the downstream end of the upper wetland, the boulder toe in the lower channel, LWD in the lower channel, and the Channel Step-down structure at the confluence with the Duwamish River. Utilize results of the hydraulic analysis to assess the impacts of the flap gate removal on hydraulic conditions and the stability of Riverton Creek, and to develop the hydraulic design of any necessary scour countermeasures at the site of the flap gate removal, replacement pedestrian bridge and selected habitat enhancement options. Any necessary scour calculations will be included in the analysis to support the design of scour countermeasures (toe -down depths). Assumptions: • Evaluation of channel stability impacts upstream of the flap gate removal will be based on assessment of changes in predicted hydraulic conditions and will not include detailed channel stability or sediment transport calculations. • This task does not include detailed design drawings or cost estimates that are assumed to be covered by other project tasks. Deliverables: • Updated Scour and design calculations 6.5 Technical Memorandum Otak will update the technical memorandum submitted previously to include the analysis and design of the selected habitat enhancement options. A revised draft will be submitted and revised to a final version to address City comments. Deliverables: • Updated Draft and Final technical memorandum in electronic format K:\project\32700\32740\Contract\AMENDMENT 4\Riverton SOW_Amend 4_19_0530.docx 4 1 (u.....)..dmoi $ -37,920 tenni II 110111. �Y IIIlIII1IIIIIIIHIIIIIIII1Il 0,E/0) 0H MU, 22 $ 3,175 22 $3,175 216 [$ 28.934 1 146 $18,592 2 S332 2 9332 3 1 $421 22 1 53,020 2 1 _._..53321 2 1 $332 45 $ 5,811 24 93,097 283 $ -- 37,920 IP ';�I1lIIIIIIIIIIlIIli1I� I�I - 'CI-iu 32 I 48 1 4 [ 62 i 20 42 2 50 1111111 8 I 2 i 2 ] 4 30 12 16 6 6 4 8 2 8172.721 $115.15 1 5136.74 1_ $109.40 ( $169.21 1 � V p V 0. Description N U' Project Management T 2 12 1,1 (Project Management and Coordination 2 12 5.1 Final Design and Plan Sheets 1.90% Plans...._ __. 4 f 16 3. Final PSE Bid Set -- 2 5.2Specifications 3, Final PSE Bid Set 2 5.3 (Construction Cost Estimates J3. Final PSE Bid Set [ 1 2 Hydraulic Analyses _.. 1 3 6.3 'Hydraulic Analyses ` 2 6.41Countermeasures 113illing Rate (including OH and Pr000) $234 60 - $165.53 !iota]. Labor Lost, including Overhead and Profit $ 1,408 $ 10,760 jDirect Expenses Project Total (Amendment No. 4) Amend 4_ 2019_0530.xlsx K:\project\32700\32740\Contract\AMENDMENT 4\Riverton Fee E City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070 CONTRACT FOR SERVICES Amendment #3 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 3. Duration of Agreement: Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending April 30, 2020, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than April 30, 2020 unless an extension of such time is granted in writing by the City. All other provisions of the contract shall remain in full force and effect. , 2011 Dated Dated this day of CITY OF TUKWILA CONTRACTOR Allan Ekberg, Mayor— ATTEST/AUTHENTICATED Ar Printed Name: APPROVED AS TO FORM aCLL U Christy O'Flah'rty, MMC', City Clerk Office of the Cily Attorney CA Revised December 2016 Page 1of1 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070(b) Council Approval 9/17/18 CONTRACT FOR SERVICES Amendment #2 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 2. Scope of Services. The Consultant agrees to perform the services, identified on Exhibit "A-2" attached hereto, including the provision of all labor, materials, equipment and supplies. Exhibit A-2 supplements Exhibits A and A-1. Section 3. Duration of Agreement; Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending April 30, 2019, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than April 30, 2019 unless an extension of such time is granted in writing by the City. Section 4. Payment. The Consultant shall be paid by the City for completed work and for services rendered under this Agreement as follows: A. Payment for the work provided by the Consultant shall be made as provided on Exhibit "B-2" attached hereto, provided that the total amount of payment to the Consultant shall not exceed $182,420.00 without express written modification of the Agreement signed by the City. Exhibit B-2 supplements Exhibit B and B-1. B. The Consultant may submit vouchers to the City once per month during the progress of the work for partial payment for that portion of the project completed to date. Such vouchers will be checked by the City and, upon approval thereof, payment shall be made to the Consultant in the amount approved. C. Final payment of any balance due the Consultant of the total contract price earned will be made promptly upon its ascertainment and verification by the City after the completion of the work under this Agreement and its acceptance by the City. D. Payment as provided in this section shall be full compensation for work performed, services rendered, and for all materials, supplies, equipment and incidentals necessary to complete the work. E. The Consultant's records and accounts pertaining to this Agreement are to be kept available for inspection by representatives of the City and the state of Washington for a period of three (3) years after final payments. Copies shall be made available upon request. CA Revised December 2016 Page 1 of 2 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: All other provisions of the contract shall remain in full force and effect. Dated this 1-1-` day of ("---11* , 2018. CITY OF TUKWILA CA Revised December 2016 CONTRACTOR Printed Name: Page 2 of 2 Exhibit A-2 Scope of Work Riverton Creek Flapgate Removal Project City of Tukwila August 7, 20I8 Otak Project No. 32740 Amendment No. 2 A 75 -percent design for the Riverton Creek Flapgate Removal Project was completed previously by a different consultant. Under the original Scope of Work, Otak performed an Intake Review of the previous design and found that on-site geotechnical evaluation, cultural resources, and hydraulic modeling and scour analysis had not been provided with the previous design, even though stability concerns had been documented. Further, based on a site investigation of existing conditions, Otak's team recommended that the proposed channel section be revised to address slope stability and erosion concerns. The previous .Amendment No. 1 added geotechnical services and some additional scope to revise the channel section to address long-term stability concerns. Once on-site geotechnical explorations and analysis were performed, the team met to review the geotechnical recommendations and identify necessary measures to address global stability, since, the adjacent Tukwila International Blvd. bridge abutment sheet pile wall and private parking lot will be supported by the proposed channel side slopes after flapgate and culvert removal and breaching of the revetment. Options considered included further stabilization measures for the existing sheet pile wall such as a new sheet pile wall at the base of the existing wall or the installation of a lower row of tie -back anchors nearer the base of existing wall. Options for a new retaining wall along the east side of the channel were also considered to maintain the existing private parking lot. Constructability and cost were compared between optional design elements for stabilization. In addition to the channel alignment and pedestrian bridge being shifted east, further away from the existing sheet pile wall, the team recommends that a second row of tie -back anchors be installed in the existing sheet pile wall, and a new, taller soldier pile wall be installed on the east side of the channel to minimize disturbance and excavation of the existing soils and parking lot. After constructability review, the team also recommends revising the construction sequencing shown in the 75% design by others in order to reduce the risk for mobilization of sediment into the Duwamish River during channel excavation. Sediment mobilization will likely be a concern to the environment review agencies. The recommended revisions to the previous design and the addition of new stabilization elements are beyond the final design scope. At the request of the City, Otak also met with WSDOT in the field to review the project and a general permit will be required from the WSDOT Local Agency and Development Services group. They have requested to review all Exhibit A-1 Scope of Work Continued technical analysis including the geotechnical report, hydraulic analysis, and structural calculations. Coordination with WSDOT and permitting support services to address comments are beyond the permitting support scope. The following scope is for additional final design services for the recommended stabilization measures based on the geotechnical analysis and additional services to support the City in addressing comments from permitting agencies. This scope also provides additional services for preparation of final bid documents which was removed in Amendment No. 1. The following table provides a summary of the contract value for the project as modified by Amendment No. 2. Contract Authorized Fee Original Contract $105,363.00 Amendment No. 1 $39,993.00 Amendment No. 2 $37,064.00 Total $182,420.00 Scope and Budget Modifications 1.1 - Project Management and Coordination The scope for this task is increased to provide project management and coordination for an extended project schedule for anticipated construction in 2019. This includes additional services for regular status update meetings with the City, project management, and preparation of project reports and invoices. 4.1 JARPA Preparation The scope for this task was reduced with Amendment No.1. The scope for this task is increased to provide services for development of grading quantities to be included in the Joint Aquatic Resources Permit Application (JARPA) being prepared by the City. The quantities will include the revised construction sequencing of the culvert removal and revetment grading. Otak will also provide the project summary narrative via email for the JARPA. 4.7 Permitting Support The scope for this task was reduced with Amendment No. 1. This scope provides services for developing responses to comments received during review of permit submittals. The scope for this W: \ PW Eng\ PROJECTS \ A- DR Projects \Riverton Flap Gate Removal (99830103 98-DR03) \Consultant Selection \ Phase 2\ contract\ Amendment #2 \Riverton SOW_Amend 2_18_0807.docx 2 Exhibit A-1 Scope of Work Continued task is increased to include one round of comment response for the JARPA and one round of comment response for the WSDOT General Permit. Task 5 — Final Design 5.1 Final Design and Plan Sheets 4 Creek Grading, Trail Restoration, and Bank Armoring Design The scope for this task is increased to include final design of the following elements: 1. Revised channel alignment and section to allow 2:1 channel side slopes. 2. Revised bridge location and existing concrete wall demo and tie-in extents to align with revised channel location. 3. Additional row of tie -back anchors in the lower portion of the existing sheet pile wall. 4. Revised construction sequencing shown in the plans to reduce the potential for in -water work and to minimize sediment mobilization during culvert removal and channel grading activities. 6 Retaining Wall Design (3 sheets) This scope is increased to include final design of a solider pile wall east of the proposed channel with greater vertical and horizontal extents. 5.2 Specifications Otak will provide final bid -ready General Special Provisions (GSP) and project -specific Special Provisions for Divisions 2 — 9, excluding the landscape and planting Special Provisions to be prepared by the City per Amendment No. 1 scope. Per Amendment No. 1 scope, The City will prepare Division 1 of the Specifications and compile the master Contract Manual including all Contract and Bid Forms, Amendments to the WSDOT Standard Specifications, and Appendices. The City will incorporate Special Provisions provided by Otak. 5.3 Construction Cost Estimates Otak will prepare a final Engineer's Estimate for construction. W:\PW Eng\ PROJEChS \ A- DR Projects \Riverton Hap Gate Removal (99830103 98-DRO3)\Consultant Select on \ Phase 2 \ contract \ Amendment #2 \ Riverton SOW_Amend 2_18_0807.docx 3 Exhibit A-1 Scope of Work Continued Deliverables: 1. Final bid -ready Special Provisions Division 2-9 in MS Word format 2. Final full-size signed Bid Plans 3. Final Engineer's Estimate 4. Comment Responses to permitting agencies provided via email W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #2\Riverton SOW Amend 2_18_0807.docx 4 Exhibit B-2 - Fee Estimate (Luray) aai ryloy a 2 Uf DUD - 9 >D at2og 0.0 81800 0 A 61.10) 'sey.Sq aaj regoy (Inc)) v11011 115101 Al gaa.1. 8uuaaLOIE ti Al lsuuaiag D I4d "aS / 31d +BVV and / IA 2D 1w!D NEd'53 / DId "aS U 011 d Bank Armoring Design 8 v V 9 0 .4 V Prot Total (Amendment No. 2) on\Phase 2\ (99830103 98-DR03)\Co City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 17-070(a) Contract Approval 11/20/17 CONTRACT FOR SERVICES Amendment #1 Between the City of Tukwila and OTAK, Inc. That portion of Contract No. 17-070 between the City of Tukwila and OTAK, Inc. is hereby amended as follows: Section 2. Scope of Services. The Consultant agrees to perform the services, identified on Exhibit "A-1" attached hereto, including the provision of all labor, materials, equipment and supplies. Exhibit A-1 supplements Exhibit A. Section 3. Duration of Agreement; Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending April 30, 2019, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. The Consultant shall perform all services and provide all work product required pursuant to this Agreement no later than April 30, 2019 unless an extension of such time is granted in writing by the City. Section 4. Payment. The Consultant shall be paid by the City for completed work and for services rendered under this Agreement as follows: A. Payment for the work provided by the Consultant shall be made as provided on Exhibit "B-1" attached hereto, provided that the total amount of payment to the Consultant shall not exceed $145,356.00 without express written modification of the Agreement signed by the City. Exhibit B-1 replaces Exhibit B. B. The Consultant may submit vouchers to the City once per month during the progress of the work for partial payment for that portion of the project completed to date. Such vouchers will be checked by the City and, upon approval thereof, payment shall be made to the Consultant in the amount approved. C. Final payment of any balance due the Consultant of the total contract price earned will be made promptly upon its ascertainment and verification by the City after the completion of the work under this Agreement and its acceptance by the City. D. Payment as provided in this section shall be full compensation for work performed, services rendered, and for all materials, supplies, equipment and incidentals necessary to complete the work. E. The Consultant's records and accounts pertaining to this Agreement are to be kept available for inspection by representatives of the City and the state of Washington for a period of three (3) years after final payments. Copies shall be made available upon request. CA Revised December 2016 456t.J ogi6/09e-s Page 1 of 2 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 17-070(a All other provisions of the contract shall remain in full force and effect. Dated this i2 ,j 51' day of hod /4ei , 2017. CITY OF TUKWILA CONTRACTOR Allan Ekberg, Mayor Printed Name: QA1Aael CA Revised December 2016 Page 2 of 2 Exhibit A -I Scope of Work Riverton Creek Flapgate Removal Project City of Tukwila October 17, 2017 Otak Project No. 32740 Amendment No. I A 75 -percent design for the Riverton Creek Flapgate Removal Project was completed previously by a different consultant. Under the original Scope of Work, Otak performed an Intake Review of the previous design and found that on-site geotechnical evaluation, cultural resources, and hydraulic modeling and scour analysis had not been provided with the previous design, even though stability concerns had been documented. Further, based on a site investigation of existing conditions, Otak's team recommended that the proposed channel section be revised to address slope stability and erosion concerns. The City requested an amendment to add services for the technical analysis and to make revisions to the previous design. In order to reduce the additional cost, tasks were identified that could be led by the City staff with support from Otak such as preparation of permit applications and landscape design. The following scope is for additional services required to complete the final design for the Riverton Creek Flapgate Removal Project. These services are in addition to those set forth in the Scope of Services of the Consultant Agreement for the project. The additional tasks are organized according to the tasks being supplemented in the original contract; in addition tasks that are proposed to be reduced or eliminated are described below. The following table provides a summary of the contract value for the project as modified by Amendment No. 1. Contract Authorized Fee Original Contract $105,363.00 Amendment No. 1 $39,993.00 Total $145,356.00 Exhibit A-1 Scope of Work Continued New Scope Items The following task list is new tasks that are to be added to the Contract. Following these tasks is a section pertaining to Contract items that are to be modified because of changes in scope. Task 2 — Intake Review 2.5 Alternatives Analysis and Meetings (New) Otak will complete additional work related to development of conceptual plans and cost estimates for two alternatives for the proposed open confluence of Riverton Creek and the Duwamish River. Alternative 1 will include a pedestrian bridge with a revised channel section to allow for channel side slopes less steep than the 1.25'H : 1'V slopes proposed in the 75% design by others. Alternative 2 will include a box culvert and wingwalls. Otak's subconsultant, GeoEngineers, will review the concept designs and provide comments on stability and recommendations for geotechnical evaluation. Task 4 — Permitting, Environmental Review and Coordination 4.8 Water Quality Monitoring (New) In order to provide an initial assessment of potential stormwater impacts to salmonids, Otak will evaluate water quality conditions in the system using the WSDOT Hi -Run model and field verification of existing conditions. The model and field verification will extend from the confluence of Riverton Creek and the Duwamish River upstream to the culverts conveying Riverton Creek under SR 599. Work for the Hi -Run modeling effort will involve collecting information on the discharge area for contributing stormwater, precipitation data, existing baseline conditions, end -of - pipe -loading subroutine, and receiving water dilution subroutine. Otak will prepare a technical memorandum describing and interpreting the modelling and field verification results. Task 6 — Hydraulic Analysis (New) This task includes the hydraulic analysis necessary to support the design of the removal of two flap gates and creek channel restoration for Riverton Creek at the confluence with the Duwamish River. A previous hydraulic analysis was conducted by Northwest Hydraulic Consultants (NHC) to evaluate any potential increased flood risk from the flap gate removal. The analysis was based on a long-term (52 -year) HEC -RAS unsteady flow simulation to evaluate potential changes in the frequency of water levels along the creek. The long-term simulation accounts for the complex W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03)\Consultant Selection\Phase 2\contract\Amendment #1 \Riverton SOW Amend 1_17_1027.docx 2 Exhibit A-1 Scope of Work Continued interaction of Riverton Creek and the Duwamish River wherein the hydraulic conditions at the confluence are governed by the timing of flows in the creek and stages on the river. However, due to the configuration of the model that includes a storage area at the upstream side of the existing outfall, detailed hydraulic information (velocities, etc.) in the design reach is not available. The hydraulic analysis presented here builds on the NHC hydraulic analysis to obtain the necessary hydraulic design information as described in this task. 6.1 Data Review Review the previous hydraulic model and report (NHC, 2010). 6.2 Statistical Analysis Perform a statistical analysis of the time series data from the NHC hydraulic analysis to develop the joint probability of flows in Riverton Creek and stages on the Duwamish River. This will provide a range of plausible flow scenarios for the hydraulic analysis of Riverton Creek at the confluence. Deliverables: • Results of the statistical analysis and recommended flows and stages for use in the hydraulic analysis of Riverton Creek. 6.3 Hydraulic Analysis Construct a detailed one-dimensional (1-D) steady flow HEC -RAS model of Riverton Creek for the study reach that extends from the confluence with the Duwamish River to the northbound SR -599 on ramp. Cross sections along Riverton Creek will be based on available topographic survey data of the study reach. The model will be configured for existing and proposed conditions and run for a range of design flows and Duwamish River stages based on the joint probability analysis performed for Task 6.2. Assumptions: • Available survey data are sufficient for the development of accurate cross sections for use in the hydraulic analysis Deliverables: • Electronic files of the hydraulic model 6.4 Channel Stability Analysis and Hydraulic Design of Scour Countermeasures Utilize results of the hydraulic analysis to assess the impacts of the flap gate removal on hydraulic conditions and the stability of Riverton Creek, and to develop the hydraulic design of any necessary scour countermeasures at the site of the flap gate removal and replacement pedestrian bridge. Any W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03)\Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW Amend 1_17_1027.docx 3 Exhibit A-1 Scope of Work Continued necessary scour calculations will be included in the analysis to support the design of scour countermeasures (toe -down depths). Assumptions: • Evaluation of channel stability impacts upstream of the flap gate removal will be based on assessment of changes in predicted hydraulic conditions and will not include detailed channel stability or sediment transport calculations. • This task does not include detailed design drawings or cost estimates that are assumed to be covered by other project tasks. Deliverables: • Scour and design calculations 6.5 Technical Memorandum Write a draft and final technical memorandum that documents the hydraulic analysis and results. Deliverables: • Draft and final technical memorandum in electronic format Task 7 — Geotechnical Analysis (New) This task includes a geotechnical evaluation by GeoEngineers, a subconsultant to Otak. Phase 1 geotechnical services included a brief review of preliminary drawings and available existing subsurface information, including the 1996 geotechnical report, as -built drawings of the existing TIB bridge and sheet pile wall, and a site visit with the design team. Phase 2 services will include completing geotechnical explorations for the planned pedestrian bridge, completing engineering analysis to support final design, preparing a final geotechnical report for the project, providing consultation, and reviewing the project plans and specifications, as needed. This contract amendment includes scope and fee estimate for Phase 2 of the project. Our Phase 2 scope assumes the as -built drawings will provide information on the backfill type and geometry behind the sheet pile wall for design of the ground anchors and explorations behind the wall are not necessary. Our specific scope of services for Phase 2 is presented below. 7.1 Explorations and Final Design Report 1. Review available subsurface information including our 1996 geotechnical report, as -built drawings of the existing sheet pile retaining wall, and available geologic and topographic W:\PW Eng\PROJECTS\A- DR Projects \ Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW Amend 1_17_1027.docx 4 Exhibit A-1 Scope of Work Continued maps. We assume Otak, Inc. (Otak) and the City of Tukwila (City) will provide as -built information for the existing bridge and wall. 2. Review preliminary drawings for the planned project including trail improvements, flapgate removal and culvert modifications, and upgrades to the bulkhead. 3. Complete a site reconnaissance to observe the existing surficial conditions of the site. 4. Develop approach for tie -back and sheet pile wall analyses. 5. Explore subsurface conditions at each end of the planned pedestrian bridge by completing two geotechnical borings to depths of about 50 to 60 feet. The preliminary depths were estimated to determine the contact elevation between the anticipated sand layer and lower very soft organic silt layer. It may be necessary to drill deeper borings through the lower organic silt layer, depending on the foundation loads and seismic requirements of the bridge structure. The drilling services will be subcontracted to GeoEngineers and will be completed using hollow -stem auger or mud rotary drilling equipment. We will contact the Washington State One -call service to locate the explorations in areas that are clear of underground utilities. We will also use a subcontract a private utility locate service, to locate utilities not covered by the one -call service. The drilling will generate excess soil that will not be replaced in the borehole. Our scope and fee estimate assumes that the soil cuttings will be left on site and that the site restoration, is not necessary. If the soil cuttings will need to be hauled off- site, then additional expenses will be needed. The borings will be backfilled in accordance with the Department of Ecology's requirements. 6. Evaluate pertinent physical and engineering characteristics of the site soils based on laboratory tests from the borings. The laboratory tests will include moisture content, grain - size distribution, Atterberg limit determination, and percent fine contents, as appropriate. 7. Prepare a draft and final geotechnical design report. Our specific scope of services for the design -level report will include the following: • Project vicinity map and site plan showing the location of the geotechnical exploration with • respect to the proposed development including new or previously completed explorations. • Previous boring logs and boring logs and laboratory test results completed for this study (if • completed). • Summary of subsurface soil and groundwater conditions. • Seismic design recommendations based on the current International Building Code (IBC). • Foundation design recommendations (axial and lateral pile capacity) for the proposed • pedestrian bridge. We have assumed the foundations will consist of deep piles. • Anchor recommendations for stabilization of the existing sheet pile wall. • Recommendations for stability of site slopes, including stability evaluations and • recommendations for the existing steep slopes in front of the sheet pile wall where tie -backs • may be needed for the planned project. W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW Amend 1_17_1027.docx 5 Exhibit A-1 Scope of Work Continued • Recommendations for earthwork including: o Stripping, removal of soft, organic or other unsuitable material; o Excavation considerations including temporary cut slope inclinations; o Placement and compaction of structural fill; o A discussion on the effects of weather and construction equipment on the site soils; and o A discussion on site drainage and dewatering, if necessary. 8. Provide consultation to the design team including reviewing the plans and specifications for conformance to our geotechnical recommendations. W:\PW Eng\ PROJECTS \A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW_Amend 1_17_1027.docx 6 Exhibit A-1 Scope of Work Continued Scope and Budget Modifications Several tasks are forecasted to be under budget or are reduced in scope, which will reduce the budget requirement, and include the following: 2.4 Develop Permitting Strategy Plan This task is omitted. The City will lead the permitting effort. Any permitting support, if requested by the City, will be provided under Task 4.7 Permitting Support. 3 Coordination Meetings This task is omitted. Otak will facilitate meetings to review assessment of alternatives under new Task 2.5. Any participation of a meeting with permitting agencies, if requested by City, will be provided under Task 4.7 Permit Support. 4.1 JARPA Preparation The scope for this task is reduced. The City will prepare the Joint Aquatic Resources Permit Application (JARPA) for the project including the preparation of the required drawings. The JARPA and existing Critical Areas Report will be used to apply for and support a Washington State Department of Fish and Wildlife (WDFW) Streamlined Hydraulic Project Approval (HPA) for a fish habitat enhancement project. The City will prepare the complete application and manage the submittal. Otak will provide support and review of the draft application materials, as requested. 4.2 Specific Project Information Form (SPIF) The scope for this task is reduced. The City will prepare and submit the Specific Project Information Form (SPIF), per the Programmatic Biological Assessment (PBA) for Restoration Actions in Washington State and associated Biological Opinion (BiOp). Otak will provide support and review of the draft form. 4.3 Cultural Resources This task is revised to include a Cultural Resources Assessment by Cultural Resource Consultant (CRC), a subconsultant to Otak. CRC will provide the following project components as part of this cultural resources assessment: • CRC will conduct a search of site files recorded at Washington Department of Archaeology and Historic Preservation (DAHP); review of relevant correspondence between the project proponent, stakeholders and DAHP; and, review of pertinent environmental, W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03)\Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW Amend 1_17_1027.docx 7 Exhibit A-1 Scope of Work Continued archaeological, ethnographic and historical information appropriate to the project area from a variety of available resources. • CRC will contact the cultural resources staff of tribes that may have an interest in the project area. This communication is intended to inform the cultural resources assessment and does not constitute government -to -government consultation. • CRC will provide a field investigation of the project location for identification of archaeological and historical resources and, if necessary, excavation of shovel test probes or other exploratory excavations in environments that might contain buried archaeological deposits. Field methods will be consistent with DAHP guidelines. • CRC will monitor during geotechnical explorations (two borings anticipated) in order to observe subsurface conditions near the proposed culvert removal. • CRC will document and record archaeological and historic sites within the project area, including preparation of Washington State archaeological and/or historic site(s) forms. Documentation will be consistent with DAHP standards. • CRC will prepare a technical memo describing background research, field methods, results of investigations, and management recommendations. The report will provide supporting documentation of findings, including maps and photographs, and will conform to DAHP reporting standards. Report and support materials will be provided electronically. 4.4 Ecology Construction Stormwater General Permit This task is omitted. The City or the Contractor will submit for this permit once the project is scheduled for construction. 4.5 Wetland Delineation The scope for preparing a Critical Areas Report is reduced to only include the preparation of a memorandum to supplement the Critical Areas Assessment prepared with previous work. 4.6 Agency Meetings This task is omitted. Any participation of a meeting with permitting agencies, if requested by City, will be provided under Task 4.7 Permit Support. 4.7 Permitting Support The scope for this task is reduced to include the attendance of up to two meetings with permitting agencies by two Otak staff. Each meeting is assumed to take 3 hours including travel time. Task 5 — Final Design W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW_Amend 1_17_1027.docx 8 Exhibit A-1 Scope of Work Continued The preparation of final signed bid set plans and specs is removed from the scope. A final bid set can be prepared later once additional funding has been secured for construction. 5.1 Final Design and Plans Sheets 4 Creek Grading, Trail Restoration, and Bank Armoring Design The scope for final design and plan preparation is revised as the City will perform all landscaping design for revegetation of Riverton Creek and for edge restoration along Green River Trail. The City will provide construction plan sheets for all landscaping features including the placement of Large Woody Debris (LWD). The City will also provide all planting details. Otak will provide the details for LWD. Otak will also provide electronic drawing files for the sheet titleblock and any civil basefiles that the City will need to prepare the landscaping sheets. Otak will revise the grading prepared previously (by others) to allow for channel side slopes with a maximum slope of 1.75'H : 1'V. It is assumed that this proposed slope will be able to be stabilized with a bio -engineered system with components such as LWD, rip -rap, plastic geocell, and biodegradable matting that is compatible with the City's design for slope vegetation. This scope does not include engineering for a mechanically stabilized earth wall or soil nails for channel slope stabilization. 6 Retaining Wall Design (3 sheets) The scope for final design and plan preparation is revised to include a retaining wall adjacent to the parking lot with greater vertical and horizontal extents. It is assumed that this wall will be a reinforced concrete retaining wall. A computer -modeled visualization is omitted from the scope. 5.2 Specifications The scope for this task is reduced as the City will lead the preparation of the master Contract Manual and the preparation of landscaped Special Provisions. Otak will provide General Special Provisions (GSP) and project -specific Special Provisions for Divisions 2 — 9, excluding the landscape and planting Special Provisions. The City will prepare Special Provisions for all landscape and planting work including topsoil, compost, seeding, and plant establishment. The City will prepare Division 1 of the Specifications and compile the master Contract Manual including all Contract and Bid Forms, Amendments to the WSDOT Standard Specifications, and Appendices. The City will incorporate Special Provisions provided by Otak. W:\PW Eng\PROJECTS\A- DR Projects\Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract\Amendment #1\Riverton SOW_Amend 1_17_1027.docx 9 Exhibit A-1 Scope of Work Continued Otak will provide a review of the Specifications Manual at the 90 percent and Final design levels. The City will provide revisions as necessary. Otak will prepare an estimated construction schedule to determine the number of working days for the construction contract, for review by the City at approximately the 90 percent design level. Deliverables: 1. Special Provisions at 90 -percent and 100 -percent design (pdf format and MS Word format)., sealed by a Washington state registered PE. 2. Estimated construction schedule, draft and final in Microsoft Project (.mpp and .pdf format). 5.3 Construction Cost Estimates The scope for this task is reduced as the City will provide quantities and unit costs for all landscaping bid items. Otak Project Expense Budget Expense costs will be significantly less than projected and site visits that will incur mileage costs will be limited. W:\PW Eng\PROJECTS\A- DR Projects \ Riverton Flap Gate Removal (99830103 98-DR03) \ Consultant Selection\Phase 2\contract \Amendment #1\Riverton SOW Amend 1_17_1027.docx 10 - d 1.°1 - " ^ E " I '' in ! I I n """ 8 e 3 9 " 4$ °^. S _ " R n R ^4 e R. E E " Ie R »3 »»» EIR E, »»e 3 7n7 » I I - 1 » 1 { " » § u w g " r " - -.. { $ 106,656: $ 300 I $ 32,600 1$ 5,600 • I $ 106,656 $ 300 I $ 32,600 1 $ _ 5,600 ti e.an9°3 • n.,84';'4 »ISA»» F4 s 2I n n _»»» Bio o- 1» Is i « & _» .. »» w (v«O)v.j, uno1(4") 1 s R n_ - v, `B n i mi ma .._ .. J 4 . - vR= •-•e -. .: e« e a « _...° __ - - . 9 ° 4 « f I I I I I I I ~ 14 - » » » 4o - - aAIq".L 58.9 °3 1 » « '" 3 - r N '1 1 .1 « - » In ,Ir"v ad.xp°c� ,1 _ » :6:'.LL. R' P ry 1 - _ -- Q3 iAI 1 » -""�.' -^I� - -}'- �« - I _. = x37 - I-- 1 �- » 9_ " .. 1:= ' R=_ ,.9.49» 3. 5 �__ng — »8» e 103 — ___1__ y jIII 30 3.3 —� a - g 111..°as ` $ rF�' .'�'�l_� ._= 9. _ }1 III Imna,s I4a » . e ' n 11137 Zic't 0. OZc I - 01 06 I 61 �1 _..1_ _ - _�.� _., Al n _ .. y,°-,�'� E in 37 e� n « « --- I J 190 • 4 $134.90 0165,16 1 $ 23.631 $ 757 • I I 1 i IVd'tS/71d 499 1 —mm �e e .�. - _.. -� :°.e°o I ... �I_.,.... d€1,41n wa 'S H �T 5 r !6 E @ 1e I ° t. _ 6 3f1 a t.t. -.A6 .jr .3r-n...,61.,ri_r._�....-_._ Phase 1 Total Hours -T 1Tal Labor Con, mchnd'mg Overhead and Profit ----.. .i r.i - 1 o a e 9 1c 1- 4 - 4 Z.n 1 - .L 1 » ° I°:. » au 11.A a i{ ark? Geotechnical Analyris 7.1; Ey,brmiaas and Final Design Report Phase 2 Total Hours Tail Labor Cott, including Overhead and Profit -121rcct Esprnus Phase 2 Project Total Project Total Hours (Phasei 1-2)• Billing Ram f cludiog OH and Pmfo) Total Labor Cost, hachrding Overhead and Profit _ Direct E . nes Pro' tTotal Phases 1-2 ° F F a F F �LL Z F Z Z 8 O oci z n 6 nt a 1\Copy of Riverton Fee Est_Amend cts\Riverton Flop Cote Removal (99830103 98-DR03)\C City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Contract Number: 17-070 Council Approval 4/17/17 CONSULTANT AGREEMENT FOR DESIGN & PERMITTING SERVICES THIS AGREEMENT is entered into between the City of Tukwila, Washington, hereinafter referred to as "the City", and OTAK, hereinafter referred to as "the, Consultant", in consideration of the mutual benefits, terms, and conditions hereinafter specified. 1. Project Designation. The Consultant is retained by the City to perform design and permitting services in connection with the project titled Riverton Creek Flapgate Removal Project. 2. Scope of Services. The Consultant agrees to perform the services, identified on Exhibit "A" attached hereto, including the provision of all labor, materials, equipment and supplies. 3. Duration of Agreement; Time for Performance. This Agreement shall be in full force and effect for a period commencing upon execution and ending within 365 calendar days, unless sooner terminated under the provisions hereinafter specified. Work under this Agreement shall commence upon written notice by the City to the Consultant to proceed. 4. Payment. The Consultant shall be paid by the City for completed work and for services rendered under this Agreement as follows: A. Payment for the work provided by the Consultant shall be made as provided on Exhibit "B" attached hereto, provided that the total amount of payment to the Consultant shall not exceed $105,363.00 without express written modification of the Agreement signed by the City. B. The Consultant may submit vouchers to the City once per month during the progress of the work for partial payment for that portion of the project completed to date. Such vouchers will be checked by the City and, upon approval thereof, payment shall be made to the Consultant in the amount approved. C. Final payment of any balance due the Consultant of the total contract price earned will be made promptly upon its ascertainment and verification by the City after the completion of the work under this Agreement and its acceptance by the City. D. Payment as provided in this section shall be full compensation for work performed, services rendered, and for all materials, supplies, equipment and incidentals necessary to complete the work. E. The Consultant's records and accounts pertaining to this Agreement are to be kept available for inspection by representatives of the City and the state of Washington for a period of three (3) years after final payments. Copies shall be made available upon request. , 5. Ownership and Use of Documents. All documents, drawings, specifications and other materials produced by the Consultant in connection with the services rendered under this Agreement shall be the property of the City whether the project for which they are made is executed or not. The Consultant shall be permitted to retain copies, including reproducible copies, of drawings and specifications for information, reference and use in connection with the Consultant's endeavors. The Consultant shall not be responsible for any use of the said documents, drawings, specifications or other materials by the City on any project other than the project specified in this Agreement. 6. Compliance with Laws. The Consultant shall, in performing the services contemplated by this Agreement, faithfully observe and comply with all federal, state, and local laws, ordinances and regulations, applicable to the services rendered under this Agreement. 7. Indemnification. The Consultant shall defend, indemnify and hold the City, its officers, officials, employees and volunteers harmless from any and all claims, injuries, damages, losses or suits including attorney fees, arising out of or resulting from the acts, errors or omissions of the Consultant in performance of this . Agreement, except for injuries and damages caused by the sole negligence of the City. Should a court ofcompetent jurisdiction determine that this Agreement is subject to RCW 4.24.115, then, in the event of liability for damages arising out of bodily injury to persons or damages to property caused by or resulting from the concurrent negligence of the Consultant and the City, its officers, officials, employees, and volunteers, the Consultant's liability hereunder shall be only to the extent of the Consultant's negligence. It is further specifically and expressly understood that the indemnification provided herein constitutes the Consultant's waiver of immunity under Industrial Insurance, Title 51 RCW, solely for the purposes of this indemnification. This waiver has been mutually negotiated by the parties. The provisions of this section shall survive the expiration or termination of this Agreement. 8. Insurance. The Consultant shall procure and maintain for the duration of the Agreement, insurance against claims for injuries to persons or damage to property which may arise from or in connection with the performance of the work hereunder by the Consultant, its agents, representatives, or employees. Consultant's maintenance of insurance as required by the agreement shall not be construed to limit the liability of the Consultant to the coverage provided by such insurance, or otherwise limit the City's recourse to any remedy available at law or in equity. A. Minimum Amounts and Scope of Insurance. Consultant shall obtain insurance of the types and with the limits described below: 1. Automobile Liability insurance with a minimum combined single limit for bodily injury and property damage of $1,000,000 per accident. Automobile Liability insurance shall cover all owned, non -owned, hired and leased vehicles. Coverage shall be written on Insurance Services Office (ISO) form CA 00 01 or a substitute form providing equivalent liability coverage. If necessary, the policy shall be endorsed to provide contractual liability coverage. 2. Commercial General Liability insurance with limits no less than $1,000,000 each occurrence, $2,000,000 general aggregate. Commercial General Liability insurance shall be written on ISO occurrence form CG 00 01 and shall cover liability arising from premises, operations, independent contractors and personal injury and advertising injury. The City shall be named as an insured under the Consultant's Commercial General Liability insurance policy with respect to the work performed for the City. 3. Workers' Compensation coverage as required by the Industrial Insurance laws of the State of Washington. CA revised : 1-2013 Page 2 4. Professional Liability with limits no Tess than $1,000,000 per claim and $1,000,000 policy aggregate limit. Professional Liability insurance shall be appropriate to the Consultant's profession. B. Other Insurance Provision. The Consultant's Automobile Liability and Commercial General Liability insurance policies are to contain, or be endorsed to contain that they shall be primary insurance with respect to the City. Any Insurance, self-insurance, or insurance pool coverage maintained by the City shall be excess of the Consultant's insurance and shall not be contributed or combined with it. C. Acceptability of Insurers. Insurance is to be placed with insurers with a current A.M. Best rating of not less than A:VII. D. Verification of Coverage. Consultant shall furnish the City with original certificates and a copy of the amendatory endorsements, including but not necessarily limited to the additional insured endorsement, evidencing the insurance requirements of the Consultant before commencement of the work. Certificates of coverage and endorsements as required by this section shall be delivered to the City within fifteen (15) days of execution of this Agreement. E. Notice of Cancellation. The Consultant shall provide the City with written notice of any policy cancellation, within two business days of their receipt of such notice. F. Failure to Maintain Insurance. Failure on the part of the Consultant to maintain the insurance as required shall constitute a material breach of contract, upon which the City may, after giving five business days' notice to the Consultant to correct the breach, immediately terminate the contract or, at its discretion, procure or renew such insurance and pay any and all premiums in connection therewith, with any sums so expended to be repaid to the City on demand, or at the sole discretion of the City, offset against funds due the Consultant from the City. 9. Independent Contractor. The Consultant and the City agree that the Consultant is an independent contractor with respect to the services provided pursuant to this Agreement. Nothing in this Agreement shall be considered to create the relationship of employer and employee between the parties hereto. Neither the Consultant nor any employee of the Consultant shall be entitled to any benefits accorded City employees by virtue of the services provided under this Agreement. The City shall not be responsible for withholding or otherwise deducting federal income tax or social security or for contributing to the state industrial insurance program, otherwise assuming the duties of an employer with respect to the Consultant, or any employee of the Consultant. 10. Covenant Against Contingent Fees. The Consultant warrants that he has not employed or retained any company or person, other than a bonafide employee working solely for the Consultant, to solicit or secure this contract, and that he has not paid or agreed to pay any company or person, other than a bonafide employee working solely for the Consultant, any fee, commission, percentage, brokerage fee, gifts, or any other consideration contingent upon or resulting from the award or making of this contract. For breach or violation of this warrant, the City shall have the right to annul this contract without liability, or in its discretion to deduct from the contract price or consideration, or otherwise recover, the full amount of such fee, commission, percentage, brokerage fee, gift, or contingent fee. 11. Discrimination Prohibited. The Consultant, with regard to the work performed by it under this Agreement, will not discriminate on the grounds of race, religion, creed, color, national origin, age, veteran status, sex, sexual orientation, gender identity, marital status, political affiliation or the presence of any disability in the selection and retention of employees or procurement of materials or supplies. CA revised : 1-2013 Page 3 12. Assignment. The Consultant shall not sublet or assign any of the services covered by this Agreement without the express written consent of the City. 13. Non -Waiver. Waiver by the City of any provision of this Agreement or any time limitation provided for in this Agreement shall not constitute a waiver of any other provision. 14. Termination. A. The City reserves the right to terminate this Agreement at any time by giving ten (10) days written notice to the Consultant. B. In the event of the death of a member, partner or officer of the Consultant, or any of its supervisory personnel assigned to the project, the surviving members of the Consultant hereby agree to complete the work under the terms of this Agreement, if requested to do so by the City. This section shall not be a bar to renegotiations of this Agreement between surviving members of the Consultant and the City, if the City so chooses. 15. Applicable Law; Venue; Attorney's Fees. This Agreement shall be subject to, and the Consultant shall at all times comply with, all applicable federal, state and local laws, regulations, and rules, including the provisions of the City of Tukwila Municipal Code and ordinances of the City of Tukwila. In the event any suit, arbitration, or other proceeding is instituted to enforce any term of this Agreement, the parties specifically understand and agree that venue shall be properly laid in King County, Washington. The prevailing party in any such action shall be entitled to its attorney's fees and costs of suit. Venue for any action arising from or related to this Agreement shall be exclusively in King County Superior Court. 16. Severability and Survival. If any term, condition or provision of this Agreement is declared void or unenforceable or limited in its application or effect, such event shall not affect any other provisions hereof and all other provisions shall remain fully enforceable. The provisions of this Agreement, which by their sense and context are reasonably intended to survive the completion, expiration or cancellation of this Agreement, shall survive termination of this Agreement. 17. Notices. Notices to the City of Tukwila shall be sent to the following address: City Clerk City of Tukwila 6200 Southcenter Boulevard Tukwila, WA 98188 Notices to Consultant shall be sent to the following address: 11241 Willows Road NE Suite 200 Redmond, WA 98052 18. Entire Agreement; Modification. This Agreement, together with attachments or addenda, represents the entire and integrated Agreement between the City and the Consultant and supersedes all prior negotiations, representations, or agreements written or oral. No amendment or modification of this Agreement shall be of any force or effect unless it is in writing and signed by the parties. CA revised : 1-2013 Page 4 DATED this - day of , 20 17 . CITY OF TUKWILA Al an kberg, ' ayor Attest/Authenticated: CONSULTANT By: LAate Printed Name: Russell Gaston, PE Title: Principal Approved as to Form: City Clerk, C+iristy O'Flaherty ! Office of the City Attorney CA revised : 1-2013 Page 5 Exhibit A - Scope of Work Riverton Creek Flapgate Removal Project City of Tukwila April 03, 2017 Otak Project No. 32740 Introduction and Background Tukwila has adopted policies to identify and restore habitat and ecological function along the Duwamish River where restoration can succeed with existing conditions and adjacent uses. The removal of flapgates and perched culverts at the outlet of Riverton Creek is a key opportunity to remove a fish barrier and re -open a historical stream outfall and restore rearing and migrating habitat adjacent to the Duwamish. For this project, the City is requesting Otak to finalize the design of the Riverton Creek Flap Gate Removal improvements initiated by a previous consultant working for the City. This will include taking the 75 -percent design to final design and preparing construction documents, updating environmental assessment reports and technical supporting documents, and providing technical support to obtain permits. This project may also include construction support services. Based on our discussions with the City, the project will be accomplished in two phases — Phase 1 - Intake Review and Charter Meeting, Phase 2 - Peuuitting and Final Design. If construction support or other supplemental services are requested, a supplement will be submitted to add Phase 3 services. This scope of work describes activities within the first two phases - initially with broad teitus, and then with specific tasks for each phase. Phase I—Intake Review and Charter Meeting The first step we will take is performing a detailed review of the 75 -percent design including all reports and supporting documentation made available by the City. This review will include a field visit to assess the existing conditions and note any discrepancies from the data and descriptions from the 75 -percent design which was performed from 2009-2011. The Intake Review will also include development of a simple Permitting Strategy Plan that identifies all regulatory requirements and design criteria for various agencies so that permitability of all project elements can be confirmed. After the Intake Review, we will facilitate a project Charter Meeting with Tukwila to assess how project challenges have been addressed as part of the completed existing design (75 - percent level) and what will need to be addressed by the Otak team. After the Charter Meeting has been completed, but prior to completion of Phase 1, Otak will review the scope of work for Phase 2 and, if required and authorized by the City, make any adjustments in the scope, schedule and budget for City review and contract processing. Upon completion of Phase Exhibit A-1 Scope of Work Continued 1, a contract supplement will be prepared, if necessary, to carry the project into final design and construction document preparation. Otak will not proceed beyond Phase 1—Intake Review and Charter Meeting without authorization of the City. Phase 2 — Permitting and Final Design In Phase 2, Otak will bring the 75 -percent plans completed by another consultant up to a 100 - percent complete construction documents, including plans, specifications, and construction cost estimate (PS&E). Project Criteria The City will designate the project parameters and design criteria. Reports and plans, to the extent feasible, shall be developed in accordance with the latest edition and amendments as of the date of the Notice to Proceed, of the following documents. Changes in any design standards or requirements after work has begun may result in Extra Work. City of Tukwila • City of Tukwila Infrastructure Design and Construction Standards 2010 • City of Tukwila Development Guideline and Design and Construction Standards • City of Tukwila Comprehensive Plans, including Sewer, Water, Surface Water and Land Use King County • King County Surface Water Design Manual (KCSWDM) 2016 Washington State Aquatic Habitat Guidelines Program • Stream Habitat Restoration Guidelines 2012 • Integrated Streambank Protection Guidelines 2002 Washington State Department of Fish and Wildlife (WDFW) • Water Crossing Design Guidelines 2013 Washington State Department of Transportation (WSDOT) • Washington State Department of Transportation Standard Specifications for Road, Bridge, and Municipal Construction (M41-10) 2016 • Standard Plans for Road, Bridge, and Municipal Construction (M21-01) United States Department of Transportation, Federal Highway Administration (FHWA) • Manual of Uniform Traffic Control Devices (MUTCD) as amended and approved by WSDOT American Association of State Highway and Transportation Officials (AASHTO) K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 2 Exhibit A-1 Scope of Work Continued • LRFD Bridge Design Specifications, Fourth Edition, 2007 and the current Interims • A Policy on Geometric Design of Highways and Streets, 5th Edition, 2004 • Guide for the Development of Bicycle Facilities 1999 Project Schedule The preliminary project schedule will be developed upon notice to proceed for the project and updated as changes occur. The anticipated major milestones are: Phase Milestone 1 Intake Review 1 Charter Meeting 1 Submission of Joint Aquatic Resource Permit Application (JARPA) 2 Preparation of 100 -percent Plans, Specifications, and Estimate The duration of the reviews by the City, WSDOT, WDFW, Ecology, and the Corps of Engineers will be provided in the project schedule. Mutually agreeable changes to the project schedule, whether initiated by the City or Otak, may be the basis for adjustments in the project budget. Items and Services to Be Furnished by the City The City will provide the following items and services to Otak that will facilitate the engineering design and preparation of the construction documents for work within the limits of the project. Otak is entitled to rely on the accuracy and completeness of this and other data furnished and represented by the City and others, including but not limited to survey, and hydrologic and hydraulic analyses. • Available as -built drawings and information on other projects in the immediate vicinity. • Topographic survey needed for the project in AutoCAD format (2007 or compatible), including field locates of utility markings, sensitive area delineation flags, potholes and boring locations. Included in the survey work provided by the City will be any bathymetry or underwater surveying required for the project. • Boundary mapping including right-of-way determination and property lines adjacent to project vicinity. • Final stamped and signed right-of-way plan, based on proposed project needs determined by the Consultant. • Rights -of -entry upon all lands necessary for the performance of the work, including official notices to property owners and agencies. • Timely reviews of Otak submittals at the mutually agreed upon times set forth in the project schedule and the consolidation of all review comments by others onto one review set prior to return to Otak. Payment of all application reviews and/or permit fees. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 3 Exhibit A-1 Scope of Work Continued • Compilation, reproduction, and distribution of Bid Documents to potential bidders and interested parties. • Mailing list preparation and distribution cost for public notices. • Advertisement for Bid PHASE I—INTAKE REVIEW AND CHARTER MEETING Task I — Project Management(Phases 1 and 2) 1.1 Project Management and Coordination Otak will manage contract issues, coordinate execution of the project, and meet periodically with the City project manager and City staff. Some of the tasks include: • Preparing a work plan. • Conducting a kickoff meeting at the beginning of the project. • Meeting with the City project manager and/or staff periodically. • Modify Phase 2 services of the project, if required and authorized by the City. A project work plan will be prepared and a kickoff meeting held at the start of the project to define project goals and design criteria, and to discuss project approach, process and schedule with the design team. A project schedule (MS Project) will be developed and maintained as part of this task. Otak's project manager will provide direction to the project team, including subconsultants, and conduct project coordination meetings with appropriate task leaders. The project manager will monitor the project planned budget versus actual progress and take corrective actions if necessary. Otak will prepare and submit monthly invoices and a brief progress report to reflect progress over the last billing period and anticipated activities over the next billing period. 1.2 Quality Assurance/Quality Control (QA/QC) The project work will receive quality checks at appropriate junctures in the progress. Specifically, the design plans, cost estimates, technical memoranda, and reports will be reviewed by at least one senior design team member with knowledge of the subject matter and by Otak's Project Manager/ Principal in Charge. Assumptions: 1. Otak's Project Manager will meet face to face with the City Project Manager and or Project Engineer on as -needed basis. For budget purposes, Otak will assume four meetings, excluding kick-off meeting; one meeting will be held at Otak's office. Meeting time for the Project Manager and Principal In Charge is budgeted under this task. Meeting time for other design team members is budgeted under the tasks each works on. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 4 Exhibit A-1 Scope of Work Continued 2. Internal project team coordination meetings will be held on a monthly basis during the project duration. These meetings will be in addition to the coordination meetings held with the City, but budgeted as part of the specific work tasks. 3. QA/QC will be required for review of plan sheets, specifications, cost estimates, and technical memoranda. Calculations for structures and hydrologic and hydraulic modeling are provided by Tukwila and are not included in this scope of services, if need calculations will be provided as an additional service. 4. .Phases 1 and 2 will be completed in three (3) months. Deliverables: 1. Monthly Invoices and Progress Reports. 2. Project Work Plan. 3. Meeting summary notes. Task 2 — Intake Review 2.1 Review Existing Data Otak will gather information pertinent to the project and review the base map prepared by the City for project use. Some of the tasks include the following: • Conduct a site visit to become familiar with the site conditions and take photographs, gather field measurements, and record observations. • Coordinate with the City to collect available information pertinent to the project, including the following documents prepared in association with the 75 -percent plans: o Critical Areas Assessment for Riverton Creek Flap Gate Removal Project o Riverton Creek Flap Gate Removal Hydraulic Analysis o Riverton Creek Flap Gate Removal Project- Flood Prevention Feasibility Study o Riverton Creek F lap Gate Removal Project- Preliminary Stream Enhancement Plan o Report- Geotechnical Engineering Services Proposed Pacific Highway South Bridge o Riverton Creek Flap Gate Removal Project Wall Strengthening Feasibility Study o King County Assessor's Map o 75 -percent PS&E o Concept Plan • Request additional information as needed for project use. 2.2 Site Reconnaissance Otak will perform site reconnaissance to confirm the characterizations and delineations shown in the existing project reports are still valid, and that these are sufficient to support the permit applications. The following features will be included in the reconnaissance: • Confirmation of previously conducted wetland delineation and characterization. • Confirmation of Stream habitat conditions. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 5 Exhibit A-1 Scope of Work Continued • Confirmation of Existing surficial conditions. • Confirmation of Retaining wall conditions. 2.3 Intake Review Memo and Develop Design Criteria Otak will document the design criteria for stream restoration, bridge, retaining walls, stoini drainage, trails and utilities in a technical memorandum for review and comment by the City prior to the Charter Meeting. The City's comments will be incorporated into the intake memorandum during Phase 2. 2.4 Develop Permitting Strategy Plan Otak will identify all regulatory requirements for various agencies so that the applications for permits from local, state, and federal agencies can be completed. Otak will identify what additional studies and drawings that need to be completed to submit permit applications. These additional studies and drawing details will be documented in a technical memorandum for review and comment by the City prior to the Charter Meeting. This task will also include pre -application meetings with the US Army Corps of Engineers (COE), the Washington Department of Fish and Wildlife (WDFW), and representatives of the Native American Tribes presumably the Muckleshoots Tribes (Tribes). Deliverables: 1. Intake Review and Design Criteria technical memorandum 2. Permitting Strategy Plan technical memorandum Assumptions: 1. The City will provide the base map and 75 -percent plans in AutoCAD format (2007 or compatible), and will provide additional survey to pick up delineation flags, center -line of stream flags, etc. as necessary to complete the project. 2. The City will provide the existing information and requirements relevant to the project as available, including as -built drawings and information on utilities. 3. Project management Phase 1 and 2 is 6 -month duration. Task 3 — Coordination Meetings Otak will facilitate a project charter session with City staff to assess how the project goals and challenges have been addressed through the existing reports and the existing 75 -percent plans. We will discuss our understanding of the design criteria (Task 2.3) and our proposed permitting strategy (2.4). We will present our recommendations for completing the permit applications (Task 4.1) based on these discussions, including any additional studies that may be required for these permit applications. Otak will prepare meeting minutes summarizing the discussions and decisions made during the meeting, and actions items noting the person responsible and the anticipated schedule for K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 6 Exhibit A-1 Scope of Work Continued completion. A Draft of the Meeting Minutes will be circulated, and revisions incorporated into the Final Minutes. Otak will attend one permit pre -application meeting in the field with representatives from permitting agencies and WSDOT. Deliverables: 1. Meeting Agenda. 2. Draft and Final Meeting Minutes. Assumptions: 1. The City will provide list of requested attendees and send out invitations to them. 2. The City will provide a suitable meeting room, with audio-visual equipment. PHASE 2—PERMITTING AND FINAL DESIGN The scope and fee for this task will be updated, if necessary and authorized by the City, after the Phase 1 Intake Review and Charter Meeting is completed. Task 4 — Permitting, Environmental Review and Coordination The objective of this task is to identify and assist with acquiring all the permits, environmental review and coordination required for this project. Permitting and regulatory compliance will be done in parallel with design development. Any additional studies necessary to complete the permit applications will be considered additional work and an amendment will be submitted if requested by the City. 4.1 JARPA Preparation Otak will provide project specific information for a Joint Aquatic Resources Permit Application (JARPA) for the project based on the existing 75 -percent design stage. The JARPA and existing Critical Areas Report will be used to apply for and support a Washington State Department of Fish and Wildlife (WDFW) Streamlined Hydraulic Project Approval (HPA) for a fish habitat enhancement project. The City will prepare the complete application and manage the submittal. 4.2 Specific Project Information Form (SPIF) K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 7 Exhibit A-1 Scope of Work Continued In order to comply with the Endangered Species Act (ESA), Otak will prepare a Specific Project Information Foini (SPIF), per the Programmatic Biological Assessment (PBA) for Restoration Actions in Washington State and associated Biological Opinion (BiOp). 4.3 Cultural Resources Otak will review the cultural and historic resource investigation completed for the Tukwila International Boulevard bridge project. That investigation may need to be supplemented to include the City's project. If additional cultural resource investigation is required, that work will be included in a supplement submitted to the City, if requested. 4.4 Ecology Construction Stormwater General Permit Otak will prepare a Notice of Intent (NOI) to be submitted electronically to the Washington State Department of Ecology. The Consultant will prepare a Stormwater Pollution Prevention Plan (SWPPP) for the project for the project construction site. 4.5 Wetland Delineation Otak will field verify the wetland delineation prepared as part of previous work conducted for the project's critical areas assessment, and will update site conditions by conducting a wetland delineation for the project. Otak biologists will conduct a wetland delineation using the Corps of Engineers Wetlands Delineation Manual (1987) as amended, and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains Valleys, and Coast Region (2010), as required by the City of Tukwila, Washington Department of Ecology, and the U.S. Army Corps of Engineers. Wetland ratings for project wetlands will be determined using both the 2004 Washington State Wetland Rating System for Western Washington per Tukwila Municipal Code (TMC) 18.45.050(B), as well as the updated Washington State Wetland Rating System for Western Washington (Hruby, 2014. Wetland buffer widths will determined per TMC 18.45.050(D). Otak will collect field data to allow for characterization and designation of watercourses and fish and wildlife conservation areas in the project vicinity, and will establish buffers for these critical areas per TMC 18.45.100 and 18.45.150. Otak will prepare a critical report for the project, including wetlands, watercourses, and fish and wildlife conservation areas. 4.6 Agency Meetings Otak will attend meetings with City staff and representatives from regulatory agencies and interested tribal representatives. Field meetings will be conducted to explain project goals and objectives, project design, and to facilitate the permitting and regulatory compliance process. The first field meeting, after the pre -application meeting, will be determined upon completion of the intake review and charter meeting, preferable after the 75% plans have been updated. A second meeting will be schedule with the regulatory agencies, at Otak or Tukwila's office, to review the 90% plans. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 8 Exhibit A-1 Scope of Work Continued 4.7 Permit Support Otak will provide support to the City for communications with state and federal permitting and regulatory agencies, as well as any interested tribal representatives, for the duration of the project. This task includes addressing all comments and answering questions concerning environmental documentation and permit application materials. Deliverables: 1. List of all permits, environmental review and special studies required to finalize design and construct this project. 2. Field meeting summary memorandum for each one (Electronic PDF). 3. One draft and one final Critical Areas Report (Electronic Microsoft Word and PDF, and hard paper copies as needed by each permit). 4. One draft and one final of Joint Aquatic Resources Permit Application GARPA) supporting drawings (Electronic PDF, and hard paper copies as needed by each permit). 5. One draft and one final of Specific Project Information Form (SPIF) (Electronic Microsoft Word and PDF, and hard paper copies as needed by each permit). 6. Application (NOI) for Ecology Construction Stormwater General Permit submitted on-line. SWPPP submitted to the City. 7. One draft and final application package for each permit and environmental review (Electronic PDF and hard paper copies as needed by each permit) Assumptions: 1. The City will be the main point of contact with the permitting agencies. 2. This task does not include geotechnical exploration and analysis. 3. The Critical Areas Report for this task includes wetlands, streams and other fish and wildlife habitat conservation areas, and will not include information and analysis associated with frequently flooded areas, geologically hazardous areas, and/or aquifer recharge areas. 4. The project will be designed and qualify as a Fish Enhancement Project and will receive a streamlined Hydraulic Project Approval (HPA), per Regulatory Code of Washington RCW 77.55.181 and Washington State Department of Fish and Wildlife. 5. As a Fish Enhancement Project, the project will be exempted from the requirements of SEPA, and no SEPA environmental checklist will be prepared as part of this scope. If SEPA is required, then the City will prepare the SEPA documents based on design documents prepared by Otak under the tasks in the approved scope of services. 6. The project may require local (City of Tukwila) permits, including critical areas ordinance compliance, shoreline permits, flood hazard permits, and other relevant local permits. Applications and support documentation for local permits will not be prepared as part of this scope, if required, Tukwila will complete and submit the required local permit applications. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 9 Exhibit A-1 Scope of Work Continued 7. The JARPA and the Specific Project Information Form (SPIF) will be used to obtain ESA compliance and to support the application for a Department of the Army (Section 404) Nationwide 27 permit from the Corps of Engineers. 8. The project will be designed to meet the criteria of one or more of the restoration actions outlined in the Programmatic Biological Assessment (PBA) for Restoration Actions in Washington State and associated Biological Opinion (BiOp). 9. An individual Biological Evaluation or Biological Assessment will not be prepared as part of this scope. 10. The Army Corps of Engineers, National Marine Fisheries Service, and U.S. Fish and Wildlife Service will concur that the project meets the criteria of one or more of the restoration actions outlined in the PBA/BiOp. 11. The project will result in a No Effect or a May Affect, Not Likely to Adversely Affect determination for listed fish species that may occur in the project action area. 12. The project will not require compensatory wetland or stream mitigation, and no compensatory mitigation plan is included in this scope. 13. A monitoring plan for post -construction project performance will not be prepared as a component of this scope. 14. The project will not require an individual Section 401 Water Quality Certification from Washington State Department of Ecology (Ecology). However, Ecology will receive the project's JARPA application so that they can make an official determination that no Ecology permits are required for the project. 15. Ecology Construction Stormwater General Permit will be required. 16. The Consultant is not responsible for transfer of coverage for the Construction Stormwater General Permit for the project. 17. The Consultant is expected to follow up and address any comments that may arise in the permit review process. 18. Riverton Creek stream characterization will be taken from the existing Critical Areas Assessment and the existing Stream Enhancement Plan for the project. 19. There will be up to two field meetings with City staff, representatives from permitting agencies, and tribal organizations. 20. Any additional studies identified during the Charter Meeting will be completed under Task 14. Task 5 — Final Design This is based on updating the plan sheeting provided by Tukwila for the 75% complete plans. Plans will be reviewed during the Intake Review and Charter Meeting (Phase 1: Tasks 2 and 3) to determine if additional sheets are needed to provide a complete project bid package. If necessary, the preliminary scope and fee estimate for this task will be revisited and a supplement will be submitted for the work to provide additional sheets. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 10 Exhibit A-1 Scope of Work Continued Plans will be submitted at the 90 -percent, 100 -percent, and. Final (Bid Set) design levels for review and comment by the City. Each submittal will be provided to the City in .pdf format or other reproducible electronic format. When the 100 -percent design plan set has been approved by the City, Otak will provide a full-size .pdf set, sealed by a Washington state registered Professional Engineer (PE), Structural Engineer (SE), Professional Landscape Architect (PLA), or Professional Land Surveyor (PLS) as appropriate, with electronic files in AutoCAD. After the City has reviewed the 90 -percent submittals, a meeting will be held at the City to discuss review comments. Otak's project manager and up to three designers will attend. The preliminary sheet list used to estimate the budget for this task is based up on updating only the 16 plan sheets provided by the City for the 75 -percent design, with the addition of 2 sheets for details. 5.1 Final Design and Plans Sheets (18 updated sheets) I. General Plan Sheets (3 sheets) Otak will update the cover sheet and the construction staging plan provided by Tukwila showing table of contents, vicinity map, and existing conditions survey basemap and staging plan. Otak will also a new plan sheet, which includes a legend, abbreviations general construction notes. 2. Construction Traffic Control ,Trail Detour and Staging Plan (I sheet) Otak will update the existing 75 -percent design plans to finalize plans and details showing the detour route and signage for closing of Green River Trail between Tukwila International Boulevard at South 112th Street and East Marginal Way at South 116th Street. Otak will prepare a final plan showing the construction staging areas and traffic control requirements. Detailed traffic control plans will be prepared by the Contractor during construction for approval by the City. 3. Temporary Erosion and Sediment Control Design (2 sheets) Otak will update the existing 75 -percent design plans to finalize plans and details showing the temporary erosion and sediment controls for protecting the water quality of Riverton Creek and the Duwamish River during construction. These drawings can be used for the Stormwater Pollution Prevention Plan. 4 Creek Grading, Trail Restoration, and Bank Armoring Design (5 sheets) Otak will update the grading plans and details for restoring a stable stream channel and floodplain, with scour counter-measures and habitat features, this will include grading the floodplain, creek bankfull channel, and a low flow channel under the new bridge, and will include channel stability and habitat enhancement features including live Vegetation (included in Task 8.1.8). Large Woody Debris (LWD), riprap scour counter-measures including details.. The grading design will compliment and fit to the slope protection along the south side of the Duwamish River. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 11 Exhibit A-1 Scope of Work Continued Otak will prepare landscaping plans and details for revegetation of Riverton Creek and for edge restoration along Green River Trail. Decorative features added to the bridge or retaining walls will be detailed on the bridge or wall plans. 5 Bridge Design (4 sheets) Otak will update the bridge plans for construction of Green River Trail Bridge over Riverton Creek. The plans will include the following information: • Bridge layout and roadway profile. • General notes, design criteria and material specifications. • Construction sequence of new bridge. • Foundation type, dimensions and details. • Design details and dimensions of the bridge and structural components, including bridge abutments, superstructure framing and deck, bearing details, and pedestrian railings. • Attachment details for utilities on the bridge and transitions. • Concrete finishing, and aesthetic features of bridge (as required). 6 Retaining Wall Design (3 sheets) Otak will update the design and details for the retrofit of the sheet pile wall along Tukwila International Boulevard Bridge approach. Based on the 75 -percent design, it is anticipated that the retrofit will consist of tie -back anchors extending behind the wall into the roadway approach fill. In addition, it is estimated that there will be two new structural walls, one at each corner of the north side of the bridge. Based on the existing 75 -percent design, the existing retaining wall on the south side will be utilized to the extent feasible to support the Riverton Creek Grading. The new wall system will be either cantilevered or attached to the bridge foundation. A computer -modeled visualization of the proposed project will be prepared to assist with public outreach efforts. Deliverables: 1. Stamped structural calculations sealed by a Washington state registered SE. 2. Stamped plan sheets as described in the estimated sheet list below. 3. Electronic copy of AutoCAD files. Assumptions: 1. Green River Trail will be closed to pedestrian and bicycle traffic for the duration of the project. No staged construction will be necessary. 2. The Contractor will design temporary structures required during construction. K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 12 Exhibit A-1 Scope of Work Continued 5.2 Specifications Otak will provide specified General Special Provisions (GSP) and project -specific Special Provisions for Divisions 2 — 10, as necessary, to supplement the WSDOT/APWA Standard Specifications for Road, Bridge and Municipal Construction. Otak will also review Division 1 of the Contract Provisions for the project, prepared by the City, and provide comments and revisions as necessary. Otak will prepare an estimated construction schedule to determine the number of working days for the construction contract, for review by the City at approximately the 90 percent design level. Assumptions: 1. The City will provide the boilerplate for the Proposal and Division 1 of the Contract Provisions, and seal that portion of the Contract Provisions. 2. Specifications will be based on the 2016 edition of WSDOT/APWA Standard Specifications for Road, Bridge and Municipal Construction, current amendments, City requirements, and General Special Provisions. 3. This scope assumes that the project will be advertised for bid before April 2018 such that the 2016 edition of the Standard Specifications will be used. Deliverables: 1. Special Provisions at 100 -percent design (pdf format and MS Word format)., sealed by a Washington state registered PE. 2. Estimated construction schedule, draft and final in Microsoft Project (.mpp and .pdf format). 5.3 Construction Cost Estimates Otak will compile the quantities and estimated construction cost (i.e., engineer's estimate) at 90 - and 100 -percent level design for submittal to the City. The estimate will be prepared using historical unit prices from the WSDOT Unit Bid Analysis, City of Tukwila's recent projects, as appropriate, and other pertinent data. The water main bid items will be separated into a separate bid schedule for sales tax assessment. Deliverables: 1. Construction Cost Estimate at 100 -percent design (.pdf and MS Excel spreadsheet format). 2. Quantity calculations, with assumptions noted, at 100 -percent design (.pdf format). SUPPLEMENTAL SERVICES (Not Included in Authorized Contract) Otak has identified the following potential supplemental services that may be required by the City or permitting agencies. If requested by Tukwila, detailed scope and fee will be submitted for any supplemental services which could include: K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 13 Exhibit A-1 Scope of Work Continued • Geotechnical Exploration and Analysis • Utility Coordination • Design Report • Stream Hydrologic and Hydraulic Analyses to Support Final Design • Structural Design to Support Final Design • Construction Support Services • Supplemental Survey and Easement Documentation. • Supplemental Studies to Support Permit Requirements. • . Cultural Resources Investigation and Reporting. • Public Meetings and Stakeholder Coordination. • Grant Application Assistance K:\project\32700\32740\Contract\Riverton Creek Flapgate Removal SOW 040317.docx 14 >naa dy'+a mot; Quaav�avgoa�� ...D. awpv +aa�md q Al 3. "tav�v3 11,>„rvvvP Aman IA+A .dw.murl 113.1 IA 33 Wd''s / Old VT) 8I IA SD _ _ M9 Wd 'S / DId'+5 aN 8 I �1 g.N,g g:°.a § M tl E 3 S 3 53 S 3 8 A�� o® CERTIFICATE OF LIABILITY INSURANCE DATE(MM/DD/YYYY) 4/4/2017 THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER, AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED, the policy(les) must be endorsed. If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy, certain policies may require an endorsement. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). PRODUCER ,JD Fulwiler & Co. Insurance, Inc. 5727 SW Macadam Ave PO Box 69508 Portland OR 97239 CONTACT PeggyMacMillan NAME: Alc°.No.Ext): (503)293-8325 FAX (NC. No): (503)293-5418 E-MAIL ADDRESS:pmacmillan@'dfulwiler.com INSURER(S) AFFORDING COVERAGE NAIC # INSURERA:Travelers Indemnity Co of CT 25682 INSURED Otak Inc. 808 SW 3rd Ave Ste 300 Portland OR 97204 INSURERB:TraVelerS Indemnity Co of Am 25666 INSURERc:Saif Corporation 36196 INsuRERDBeazley Insurance Company Inc $ 1,000,000 INSURER E AGCS Marine Insurance $ 300,000 INSURERF: COVERAGES CERTIFICATE NUMBER:17/18 Gen Use REVISION NUMBER: THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. INSR LTR TYPE OF INSURANCE ADDL INSD SUBR WVD POLICY NUMBER POLICY EFF (MM/DD/YYYY) POLICY EXP (MM/DDYYY) /Y LIMITS A X COMMERCIAL GENERAL LIABILITY 6805H242469 1/1/2017 1/1/2018 EACH OCCURRENCE $ 1,000,000 DAMAGE TO PREMISES Ea occurrence) $ 300,000 CLAIMS -MADE X OCCUR MED EXP (Any one person) $ 5,000 X WA Stop Gap Liability PERSONAL &ADV INJURY $ 1,000,000 GENERAL AGGREGATE $ 2,000,000 GE 'L AGGREGATE POLICY OTHER: X LIMIT APPLIES ,ECT PER: X LOC PRODUCTS - COMP/OP AGG $ 2,000,000 Employee Benefits $ 1,000,000 A AUTOMOBILE X X LIABILITY ANY AUTO ALL OWNED AUTOS HIRED AUTOS SCHEDULED AUTOS NON OWNED AUTOS BA1502P892 1/1/2017 1/1/2018 COMBINED SINGLE LIMIT (Ea accident) $ 1,000,000 BODILY INJURY (Per person) $ BODILY INJURY (Per accident) $ PROPERTY DAMAGE (Per accident) $ Towing $ B X UMBRELLA LIAB EXCESS LIAB X OCCUR CLAIMS -MADE CUP5C8570811247 1/1/2017 1/1/2018 EACH OCCURRENCE $ 10,000,000 AGGREGATE $ 10,000,000 $ DED X RETENTION$ 10,000 WORKERS COMPENSATION AND EMPLOYERS' LIABILITY ANY PROPRIETOR/PARTNER/EXECUTIVE OFFICC (Mandatory in BER EXCLUDED? (Mandatory in NH) If yes, describe under DESCRIPTION OF OPERATIONS below Y / N N / A OREGON 967262 OTAK Architects Inc 487431 OTAK INC 4/1/2017 1/1/2018 X PER STATUTE OTH- ER E.L. EACH ACCIDENT $ 1,000,000 E.L. DISEASE - EA EMPLOYEE $ 1,000,000 E.L. DISEASE - POLICY LIMIT $ 1,000,000 D E A&E Prof'1 W/Pollution Inland Marine V10267160801 MXI93070329 1/1/2017 1/1/2017 1/1/2018 1/1/2018 Limits per Claim/Agg/Ded $2m/$4m/$200K MlscUnscheduledltems/Ded $100,000/$lk DESCRIPTION OF OPERATIONS / LOCATIONS / VEHICLES (ACORD 101, Additional Remarks Schedule, may be attached if more space is required) RE: Riverton; The City of Tukwila is included as an additional insured on the general and auto liablity with regard to operations of the named insured subject to policy terms, conditions and exclusions per attached forms CGD381 & CAT353; It is further agreed that coverage is primary and non-contributory; CERTIFICATE HOLDER CANCELLATION Mike.Perfetti@TukwilaWA.go City of Tukwila Public Works Department Attn: Mike Perfectti 6300 Southcenter Blvd Suite 100 Tukwila, WA 98188 SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN ACCORDANCE WITH THE POLICY PROVISIONS. AUTHORIZED REPRESENTATIVE P MacMillan/TMAYDA 4.9),-s2—/OGZL6:2--"L ACORD 25 (2014/01) INS025 (201401 © 1988-2014 ACORD CORPORATION. All rights reserved. The ACORD name and logo are registered marks of ACORD