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SCOPE OF SERVICES that deviate from SCRRA standards and manuals. These are anticipated to include requests for deviations from 1) minimum temporary horizontal clearance requirements, 2) the requirement that a minimum of two columns be provided per track, and 3) bridge skew angle. 4.3 Design Exceptions — Caltrans Our team will coordinate with Caltrans regarding any existing non-standard design features at the I- 5 ramp intersection. It is not expected that this grade separation project will create any new non- standard features that would require a Design Standard Design Document (DSDD) to be prepared. Task Deliverables: • City Design Memorandum • SCRRA Design Exception Memorandum Task 5 Site Survey 5.1 Project Control Mark Thomas will establish horizontal control based on CCS83, Zone VI, and vertical control will be based on the City of Santa Ana Vertical Datum, to be confirmed with the City prior to control establishment. Mark Thomas to set temporary control points for future design and construction survey within the project limits. Mark Thomas to obtain applicable encroachment permits prior to beginning any field survey work. Mark Thomas to also coordinate and verify datum(s) with SCRRA, where appropriate. 5.2 Aerial Topography Once the project control is established, Mark Thomas will establish supplemental horizontal and vertical control necessary for orienting the photogrammetric survey. Mark Thomas will acquire new color stereo image data covering the above - mentioned project area that will be suitable in resolution, scale and image quality for developing key topographic break lines and improvements. Mark Thomas will collect data during the primary data acquisition mission using conventional flight methods. Aerial imagery will be obtained when the ground is not obscured by smog, haze, fog or dust, and when cloud or cloud shadow coverage will not appear in any image. Refer to MAGENTA area in CITY OF SANTA ANA SANTA ANA BOULEVARD GRADE SEPARATION MARK 7MOMAS Figure 1 below illustrating the general footprint of the topographic data/aerial imagery to be captured and processed. Mark Thomas will map all planimetric feature data in three dimensions to generate an Aerial Topographic Survey Base Map with aerial imagery background at 1" = 40' scale. Mapped features will generally include roof outlines of buildings and other major structures, tops/toes of channels, edge of pavement for all paved surfaces, manholes, drop inlets, parking areas, curbs/gutters, sidewalks, fences, walls, signs, utility poles, light poles, above ground utility service facilities, storm drain facilities, ditches, streams, trees/tree outlines, dense brush, bulkheads, and other visible improvements at the surface elevation. Mass points and break lines will be collected along all mapped improvements listed above to create continuous contours with a 1.0' interval and a Digital Terrain Model (DTM). Assumptions • Up to eight (8) aerial ground control targets will be established • Aerial topographic mapping will not be reviewed by Caltrans (no "ABC" submittal for this project) • Field surveys to be conducted under traffic control plan, if required. Task Deliverables • Project Control in CSV and PDF formats • Basemap LandNet file in AutoCAD, PDF formats • Aerial Topographic Survey Base Map in AutoCAD, PDF and SHP formats • Color Digital Orthophotography (JPG or TIFF format) • Digital Terrain Model (DTM) in CAD format • Site Photos, Videos and Field Notes 5.3 Field Survey Once the geometries are refined utilizing the aerial mapping, Mark Thomas will perform supplemental as -built design surveys within the Project Area, approximate areas as shown below in Figure 1, per direction of the resident engineer. Topographic survey data to be collected using a conventional Total Station, statictmobile LiDAR and/or GPS and