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City of Everett Edgewater Creek Bridge Replacement <br /> Insurance maps,historical aerial photos, historical topographic maps and historical city <br /> directories for the streets included in the project corridor. <br /> 3.4.2 Site Reconnaissance: CONSULTANT will complete a site reconnaissance from public <br /> rights-of-way or publicly accessible properties(i.e.,windshield survey). <br /> 3.4.3 Generate Hazardous Materials Analysis Report: CONSULTANT will prepare draft and <br /> final Hazardous Materials Analysis Reports summarizing the data reviewed and assessing <br /> the potential presence of contaminants in soil, groundwater, sediment, and/or surface <br /> water in the project corridor. <br /> 3.5 Engineering Analysis <br /> 3.5.1 Evaluate Field and Laboratory Data: Based on the borings and the laboratory test results <br /> of selected samples, CONSULTANT will generate estimates of the soil strength and <br /> other properties needed to evaluate the effects the subsurface conditions will have on the <br /> proposed improvements. <br /> 3.5.2 Develop Geologic Cross-Sections: CONSULTANT will construct a geologic cross- <br /> section along the centerline of the project. This cross section will show soil conditions <br /> along the bridge alignment and will be provided in a geotechnical report. <br /> 3.5.3 Generate AASHTO seismic design parameters: Based on the soils encountered along the <br /> alignment, CONSULTANT will determine the Site Class for seismic design. The design <br /> spectral acceleration parameters will then be selected in accordance with the AASHTO <br /> Specifications for Road and Bridge. <br /> 3.5.4 Evaluate Slope Stability: CONSULTANT will evaluate the global slope stability of the <br /> steep slopes to identify potential impacts to the project. Results of the field <br /> reconnaissance, exploration, and testing programs will be incorporated in the analysis. <br /> Global stability will be evaluated using the limit equilibrium approach under both static <br /> and seismic loading conditions. <br /> 3.5.5 Evaluate soils for Liquefaction and Lateral Spread Potential:CONSULTANT will evaluate <br /> the susceptibility to liquefaction of the soils along the bridge alignment for the design event <br /> required by AASHTO. Once the susceptibility to liquefaction is determined, we will <br /> evaluate the potential for lateral spreading. <br /> 3.5.6 Evaluate Bridge Foundation Vertical Capacity: CONSULTANT will perform analyses of <br /> foundation vertical capacities using accepted drilled shaft and/or spread footing <br /> estimation methods provided in the AASHTO LRFD Bridge Specifications and the <br /> Washington State Department of Transportation(WSDOT) Geotechnical Design Manual <br /> (GDM). <br /> 3.5.7 Evaluate Bridge Foundation Lateral Capacity: CONSULTANT will develop bridge <br /> foundation lateral parameters. The lateral parameters will be provided in the form of <br /> Page 11 of 42 <br />