Osborn Consulting Inc. 6/10/2022

• Topographic mapping will consist of all above ground planimetric features,paving limits,curbs, walks,fences,trees(greater than 6"BDH in right-of-way),etc.,and all above and underground utilities,as specified. • Prepare an existing conditions survey base map,showing a 1-foot contour topographic survey at a l"=20' scale. • Prepare an existing conditions DTM based on the topographic survey data. • Surveyor will engage a locate service to assist with underground private/public utility location. • All field data will be processed in accordance with City of Everett survey and CADD standards and sent in AutoCAD format. City of Everett's Responsibilities • City will provide existing survey base maps and as-built information for the storm drain,sanitary sewer,and water systems in the project area,if available. • Permission to enter property parcels(if any)will be secured by the City. Assumptions: • The limits of the topographic survey shall be within the City Right of Way. • Only one site topographic survey will only be required based on the selected preliminary design layout. • This scope does not include the resolution of physical encroachments and occupation that may be disclosed during the course of the field survey. • Easement description/exhibits are not included. Deliverables: • Survey base map and DTM(in AutoCAD Civil3D format) • Stamped survey sheets for inclusion in plan set(PDF) Task 3.2 Geateclinical Services The Consultant will coordinate and provide geotechnical investigations for the project, as needed,to document subsurface conditions. Geotechnical review and investigation will be provided by a subconsultant. After the completion of the site investigation,the geotechnical engineer will prepare a geotechnical report summarizing site soil conditions and estimated ground water elevations,if encountered,and presenting geotechnical recommendations for construction of the proposed improvements. Assumptions: • Geotechnical investigations will be limited to one exploration boring at the preferred facility location. • No infiltration tests will be required. • Traffic control will be provided by the geotechnical engineer. Deliverables: • Traffic control plan(PDF). • Geotechnical Report,Draft and Final(PDF). City of Everett 3rd Ave SE Water Quality Treatment Page 4 of 10