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Page 5 of 59 <br /> <br />City of Everett Merrill & Ring Bridge Replacement <br />WORK ELEMENT 2 SURVEYING <br />This Work Element will be provided by Furtado & Associates (Furtado) to provide topographic <br />survey and engineering basemaps of the existing Merrill & Ring Bridge and its surroundings, <br />including survey of wetland flagging placed for Ordinary High-Water Mark (OHWM) of the Ck <br />and topo mapping of the ravine below it. Please see the Surveying Limits Exhibits, included <br />herein for a depiction of the limits. <br /> <br />The east-west project limits along W. Mukilteo Blvd. will begin 150’ southwesterly of the bridge <br />structure and continue 110’ beyond the northeasterly end of the bridge structure. The limits <br />include the intersections with Mukilteo Ln. and Shore Ave. <br /> <br />Above the ravine mapping will be to full Right-of-Way from Mukilteo Ln. to the top of the <br />ravine and from Shore Ave to the top of the ravine. The limits include the top of bridge from <br />barrier edge to barrier edge. <br /> <br />The survey team anticipates using a 3D terrestrial scanner for mapping the roadways and the <br />underside of the bridge structure. <br /> <br />2.1 Project Management/ QA/QC <br />This task includes the survey project management, administrative duties, and quality <br />control proper for a project of this kind, complexity and need of coordination. The <br />survey team will assign a Survey Project Manager and a Survey Quality Leader for this <br />project. The Survey Quality Leader will provide a QC or QA role to support the Survey <br />Project Manager for appropriate delivery packages. <br /> <br /> <br />2.2 Surveying <br />2.2.1 Survey Control <br />This task includes the establishment of survey control for the project, including the <br />recovery of relevant existing survey control, as required for the project. Typically, survey <br />control will be comprised of both found and set control marks including any available <br />local monuments in immediate proximity of the project limits. This survey control is <br />established to support the mapping and ROW calculation effort and future phases of the <br />project. <br />x The horizontal datum for this project will be NAD83/2011(Epoch2010.0), <br />Washington State Plane, North Zone, using the unit of USFT. <br />x The vertical datum for the survey work shall reference NAVD88, using the unit <br />of USFT. <br />