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Exhibit A <br /> Continued <br /> This survey will utilize GPS real-time kinematic (RTK) equipment and/or conventional total station <br /> instruments. <br /> Any features noted during the Site Reconnaissance (Task 3.2)will be surveyed and included in the <br /> project base map. Field boundaries of OHWM on the waterward side of the dike will be surveyed <br /> with survey-grade equipment. The field boundaries of wetlands will be located with resource-grade <br /> GPS equipment. These boundaries will be incorporated into the project base map after these <br /> boundaries are flagged (Task 4). <br /> This field survey data,in addition to the City's GIS data and LIDAR will be utilized by the Otak <br /> team to create a base map sufficient for evaluating alternatives for repairs and improvements.The <br /> map will show planimetric features,wetland boundaries,ordinary high water,surveyed cross section <br /> points along the top of the dike,and site topography of the identified distressed areas noted during <br /> the site reconnaissance (Task 3.2). <br /> The base map will include right-of-way margins,parcel lines, (taken from the County's assessor's <br /> maps and other record data) and easements within the project area. <br /> Deliverables <br /> • Site survey base map stamped by Professional Land Surveyor,registered in the State of <br /> Washington. <br /> • The base map will show 2-foot contour intervals with elevations referenced to the North <br /> American Vertical Datum 1988 (NAVD88). <br /> • The map will be referenced to the Washington State Plane Coordinate System. <br /> • AutoCAD/CIV3D base map drawing(*.dwg) file of project survey with topographic (digital <br /> terrain model—DTM) surface of surveyed area. <br /> Assumptions <br /> • Preliminary base map CAD files to be provided by the City. <br /> • The County's bathymetric survey of Union Slough will be provided by the City. <br /> • Access and rights-of-entry will be provided by the City. <br /> • As-builts,utility records,easements records, survey control and existing CAD design files for the <br /> project area will be provided by the City. <br /> • Estimates of survey and mapping are based on no more than 20 areas identified as distress area <br /> requiring survey and mapping of these features. <br /> Task 3—Geotechnical Investigation and Design Recommendations <br /> DD5 Dike Repairs and Improvements Project 4 <br /> otak <br /> K:\project\32700\32758\Contract\Scope for Phase 1—DD5 dike repairs final 7-22.docx <br />