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EXHIBIT A <br />City of Tukwila <br />2018 Small Drainage Program <br />Scope of Work <br />March 28, 2018 <br />PROJECT DESCRIPTION <br />The Consultant shall prepare final Plans, Specifications and Estimates for the 2018 Small Drainage <br />Program. The project will include the following sites: <br />Site 1: Gilliam Creek Outfall Access Improvements <br />Install level access pad andfencing/railing to improve access and safety to flap gate apron. This site <br />may require an HPA and City of Tukwila Building Permit. <br />Site 2: S 180th Street Bridge Retaining Wall <br />Raise existing retaining wall and connect to bridge abutment. This project is to address a freeboard <br />deficiency that was identified in the recent Levee Certification analysis. This site may require an <br />HPA and City of Tukwila Building Permit. <br />Site 3: Interurban Catch Basin Grates <br />Existing concrete aprons around catch basins are cracking in a number of locations between Fort <br />Dent Way and S 137`" Street. Project will repair catch basin aprons with possible modification to <br />City Standard detail to improve durability. <br />Site 4: Levee 205 Drainage Repair <br />Failing CMP storm sewer and manhole south of Strander Blvd. has been identified by the Corps of <br />Engineers for necessary repair. Replace approximately 100' of 12" storm sewer and move manhole <br />behind levee. As an in-kind maintenance replacement, no permits are anticipated. <br />Site 5: Tukwila International Blvd. / Sabey pipe abandonment <br />Add type 1 catch basin and connection to downstream system. Fill and abandon existing <br />undercrossing of Tukwila International Boulevard. <br />The Consultant shall provide necessary surveying, project design, quantity and cost estimates, and utility <br />coordination required to complete final bid documents. It is anticipated that sites will be bid as a single <br />bid package for the 2018 Small Drainage Program as budget or other considerations allow. <br />The Consultant shall provide surveyed base maps with horizontal utility locations, or base maps created <br />from field measurements, ortho-photography, and GIS data as necessary for each site. If necessary, <br />surveyed base maps will include right-of-way line work based on available public records. Project <br />horizontal and vertical datum will be assumed on all sites. <br />City of Tukwila KPG, Inc. <br />2018 Small Drainage Program Page 1 of 5 March 1018 <br />49 <br />