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• Lateral Earth Pressures <br />• Minimum Foundation Embedment <br />• Foundation Soil Bearing Capacity <br />• Coefficient of Base Friction <br />• Passive Earth Pressures <br />• Soldier Pile Design Parameters <br />• Drainage Considerations <br />• Constructability Considerations <br />• Wall Backfill Material Type and Compaction <br />• Embankment Fill Stability (static & seismic) <br />Seismic Site Characterization — This will include developing recommendations for design peak ground <br />accelerations that have a 7% probability of exceedance in 75 years in accordance with AASHTO and the <br />WSDOT Bridge Design Manual. The acceleration will be recommended based on existing seismic hazard <br />mapping. Site-specific ground response analysis will not be performed. The appropriate AASHTO soil <br />profile type will be identified. <br />Construction Considerations and Advisory Specifications — Construction considerations will be identified <br />and discussed for the feasible foundation types. Where appropriate, advisory specifications consistent with <br />the current WSDOT Standard Specifications, General Special Provisions or Bridge Special Provisions will <br />be developed for inclusion in the contract special provisions regarding geotechnical issues and ground <br />conditions expected to be encountered. <br />Draft Geotechnical Report <br />A draft geotechnical report will be prepared and submitted for review by Sargent and Kittitas County. <br />PanGEO will meet with the design team to discuss any revisions that may be necessary for the final report. <br />Final Geotechnical Report <br />PanGEO will incorporate comments or revisions to the draft report and submit a final geotechnical report for <br />the project. <br />The scope of work does not include evaluation of chemical properties of soil and groundwater, or the <br />potential presence of hazardous materials on site. <br />Roadway Design <br />The consultant will prepare the design to improve the road by widening the present road section. This will <br />include the improvement of the design of retaining walls, the improvement of slopes, the improvement of <br />guard rails, the improvement of obstacles near the road, and improvement of culvert ends. <br />Retaining Wall Design <br />Sargent Engineers will propose wall types in the vicinity of Banti Creek Road and Tree Haven Road with <br />the assistance of PanGEO. There will also be walls along the alignment to contain the widened road. The <br />preliminary details of these walls will be developed so that a final selection can be made for final design. <br />The final details for the walls will be developed for the plans, specifications, and estimate. <br />Plans <br />