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City of Everett Edgewater Creek Bridge Replacement <br /> 2.1.3 Geodetic Survey Control <br /> 2.1.3.1 Horizontal <br /> Typically, survey work shall reference the Washington State Plane Coordinate System of 1983 as <br /> established in accordance with Chapter 58.20 Revised Code of Washington. <br /> 2.1.3.2 Vertical <br /> Typically,the Vertical Datum for the survey work shall reference the North American Vertical <br /> Datum of 1988 (NAVD88). <br /> 2.2 Field Surveying and Mapping <br /> This task includes the field surveying and mapping required for this specific effort. <br /> Topographic—approx. 600 linear feet along W. Mukilteo Blvd and a portion of the park to the <br /> northeast corner of the project which is designated for staging area. The consultant shall locate <br /> and map visible features necessary for the creation of an engineering design base map as shown <br /> in Exhibit A. Typical features include: <br /> • Topographic and Planimetric, including channelization. <br /> • Edge of Pavement,gravel,grass, concrete,etc. <br /> • Curb and sidewalk, including curb cuts and ADA ramps. <br /> • Signs and signals. <br /> • Trees and edges of significant vegetation in the laydown area(see Exhibit A). <br /> • Walls,rockeries, and fences (or faces of). <br /> • Ground measurements will be captured sufficient to generate a digital terrain <br /> model (DTM)at one-foot contours. <br /> • Visible improvements situated within the described mapping limits. <br /> • Bridge abutment as-builts and soffit elevations. <br /> 2.3 Utility Surveying Services <br /> This task includes the mapping of utilities throughout the survey limits, including within the <br /> roadway. Underground `Conductible' Utility Locates. The Consultant shall arrange for <br /> underground `conductible' utility locating, by means of a private utility firm. This service shall <br /> locate utilities within the project corridor limits. The consultant will reasonably rely upon the <br /> accuracy,timeliness, and completeness of the information provided by the utility locating <br /> service. Franchise utilities are typically marked by the franchise. Underground utilities to be <br /> mapped include: power, natural gas,water, fiber optic line, cable TV,telephone, and traffic. <br /> 2.3.1 Surface Observable to include: power poles, vaults, risers, fire hydrants,water <br /> valves/meters, gas valves,traffic signal/traffic control boxes, and overhead utility lines. <br /> 2.3.2 Stormwater structures—The center of rims on catch basins and storm drain manholes will <br /> be collected. <br /> 2.3.3 Sanitary sewer structures—The center of rims on sewer manholes will be collected. <br /> Page 5 of 42 <br />