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Consultant shall submit railroad bridge concept and plans to SCRRA via the City for review and approval. B. Geotechnical Design Geotechnical design shall be conducted in conformance with current City, Caltrans, and SCRRA standards, design manuals, and requirements. Consultant shall conduct a site visit to observe the topography and visualize the proposed improvements at the project location. Consultant shall review available subsurface data from nearby structures or published geologic maps, to determine general subsurface conditions at the project site. Geotechnical borings shall be performed by the Consultant. Consultant shall provide geotechnical, geologic and seismic design recommendations. Consultant shall provide geotechnical and foundation recommendations for roadway, bridge, retaining walls, and other structures as required. Consultant shall prepare a geotechnical, materials and bridge foundation report with information gathered during the site visit and review of existing subsurface data, geotechnical borings, results obtained from the alternative analysis and the preliminary bridge and retaining wall foundation data. Consultant shall prepare and submit a geotechnical review and exploration plan for the City to review. Consultant shall obtain right -of -entry permits prior to exploration. Geotechnical borings within. the railroad ROW or adjacent with the potential to foul the tracks will require SCRRA review with right of entry permit, training, and flagging. Consultant shall conduct subsurface investigation and evaluate the results in accordance with specified testing criteria. Consultant shall analyze the results and present them in the geotechnical report. The geotechnical report shall be prepared to include recommendations for design and construction of bridge foundations, bridge type selection, earth retaining structures, cut and fill slopes, pavement, and drainage facilities. Results obtained from the field and laboratory testing shall be used to establish an idealized soil profile and strength parameters for bridge foundation design, and slope stability and settlement calculations for the approaches. Consultant shall provide information on remediation measures if the site soils are corrosive to concrete or steel structures. R-value shall be used to determine composite pavement structural sections using Traffic Indices. All reports shall be in accordance with Caltrans procedures, regulations, manuals, standards, policies, and format. The pavement structural sections shall be determined by a qualified Geotechnical Engineer in accordance with Caltrans policies and procedures. A qualified geotechnical engineer shall prepare a Geotechnical Report for foundation design of the bridge, and roadway pavement and embankment in accordance with Caltrans requirements. Sufficient borings and material samples shall be taken to determine the road structural section and slope stability. Consultant shall propose a Traffic Index (TI) for the all lanes and obtain City and Caltrans concurrence. It shall be the responsibility of the Consultant to notify Underground Service Alert and provide traffic control. Consultant shall tie position