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SCOPE OF SERVICES • Log of Test Borings (6) • Total Sheets: 36 8.4.2 Independent Check (non-std walls) Mark Thomas will perform an independent design check of the retaining walls in conformance with Caltrans bridge design procedures. The independent check will be completed by an engineer who was not involved in the original design of the structure. Calculations will be performed to check the layouts and structural integrity. Upon completion of the independent check, discrepancies between the designer and checker will be reconciled and plans updated. 8.5 Entry Pavilion/Canopy Remodel Pavilion Structures work consists of removing existing Entry Pavilion and portion of existing Canopy structure, replacing new Entry Pavilion Structure matching existing Entry Pavilion at the new entry location. Mark Thomas will prepare structural calculations and plans for the Pavilion Structures. For the purposes of this scope of work, it is assumed that new Pavilion Entry Structure will match existing and City will provide all as -built plans for the existing Canopy structure and Entry Pavilion Structure. The structure design will be in accordance with California Building Code (CBC, 2025), California Existing Building Code (CEBC, 2025) and ASCE 7-22. It is assumed that the following plan sheets will be prepared: Pavilion Structure Sheet Description • Structural general notes, design criteria, special inspections (2) • Structural demolition plan (1) • Demolition details, sequencing, temporary shoring, and protection notes (1) • Structure Site Plan (1) • Pavilion Foundation Plan (1) • Pavilion Roof Framing Plan (1) • Pavilion Elevation and Sections (1) • Platform Canopy Details (1) • Canopy Foundation Plan and Framing Plan (1) • Platform and Connection Details (1) • Additional Concrete Details (1) • Additional Canopy Details (2) • Total Sheets: 14 CITY OF SANTA ANA SANTA ANA BOULEVARD GRADE SEPARATION z. MARK THOMAS Mark Thomas will perform an independent design check of the Pavilion Structures in conformance with CBC, CEBC, and ASCE 7 design requirements. The independent check will be completed by an engineer who was not involved in the original design of the structure. Calculations will be performed to check the layouts and structural integrity. Upon completion of the independent check, discrepancies between the designer and checker will be reconciled and plans updated. 8.6 Aesthetics Structure aesthetics concept design and details will be prepared during PS&E for bridge and retaining walls, including up to one (1) plan sheet, one (1) section sheet and two (2) detail sheets to support the MT Transportation and Structure Team. The aesthetic design scope assumes one design per component, including the bridge barrier, pedestrian overcrossing barrier, fence, and retaining walls. 8.7 Geotechnical Investigation & Report 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, bridges, retaining walls, and other structures as required. Consultant shall prepare a preliminary geotechnical 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.