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EXHIBIT A-6 <br />Supplement 6 <br />Additional Construction Management Services <br />Scope of Work <br />March ���"o2019 <br />City of Tuk,w^U@y <br />Project No. 99110301 <br />TIB Project No.: 8-1-116K012&_1 <br />KPG Project #: 15085 <br />BACKGROUND <br />This work willl provide additional construction management services for the construction contract to <br />complete 53m Avenue S Roadway Improvements /S 144'h' Street to S 137" Street). These additional <br />services are the result of: <br />Additional working days added through approved change orders (43 working days . <br />Anticipated additional working days for force account work and to allow SCL to complete wiring, <br />energization, of underground systemi, and wreckout of aerial system (27 working days estimated). <br />a Weather days (3O.Sapproved todate, estimate 351o1a through physical completion) <br />The original contract duration was Z1Sworking days, beginning onApril 9,J0I8and ending mnFebruary <br />15,2019. An additional 105 working days are anticipated based on, the change orders and weather days <br />described above, resulting inacompletion date of1u|yI7,3019. <br />This supplement is provided to continue construction management and inspection services in accordance <br />with the original authorization and as detailed below: <br />N. INTRODUCTION <br />The following scope of services and associated costs are based upon the assumptions outlined below. <br />General Assumptions: <br />The proposed project team for additional working days vviU| include one part-time project <br />manager, one part-time resident engineer, mnepart'tirnedocummentathonoontrolspedaUst,ome <br />full-time inspector, additional part-time inspector for certain work elements, design team, <br />management, and administrative support as required, sub -consultants to provide services for <br />materials testing, and other supporting tasks ssdeemed necessary. |1isanticipated that fuN-tinne <br />site observation will berequired for the entire duration ofconstruction. <br />City 4/Tukwila S3mAve 5 <br />Additional Construction Management 5emice <br />5copeoƒWork —Jupp6ymeot6 <br />Page I of 4 <br />KPG <br />Project #15085 <br />March 2019 <br />24 <br />