Agmt19 BKF Engineers, Surveyors, Planners

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REV: 05-12-2021 SK iv.Gas valve boxes and gas lines. v.Traffic signal boxes, street light boxes, utility vaults, electrical poles, loop detectors, traffic sign posts, street lights, and electrical lines. vi.Cable TV boxes, Cable TV lines, telephone poles, telephone lines and overhead lines. vii.Fiber optics communication lines. viii.Street monuments and/or benchmarks. ix.Tax assessors lot lines, Property line or lot boundaries, easements and right-of-way lines, house addresses (approximate, from City Block Books and County Recorder/Maps office), water services, gas services and sewer laterals. x.Curb & gutter, sidewalks, driveways and wheelchair ramps within the right of way with minimum diameter 6-inches at breast height and street facing fences within the right of way (indicate fence type/material). xi.Trees and fences. c.Base map shall be completed in Autodesk Civil 3D, 2018 or latest version (using the City's standard CAD layers) at a scale of 1"=20'. Text information and other entities shall be readable at this scale when plotted on a plan and profile sheet. Final plotted text height shall be 0.1". Civil 3D surface shall be provided in the drawing with 1-foot contour intervals. Each major contour interval shall be labeled accordingly. i.Survey station shall be at center line of street at 50 feet intervals, 25 feet stations on curves, beginning at centerline of street intersections or manholes as noted on the location map (see attached location map). Indicate the following items: spot elevations at each 50-foot station, centerl i n e , lip of gutter or edge of pavement, face of curb at flow line, back of curb, sidewalk, planting strip or landscape area and right-of-way line or property line. ii.Base map topographic survey shall extend 25 feet beyond centerline of end manholes and/or shall extend 50 feet beyond street intersections in all possible directions. Please see attached location map for reference. iii.Survey stationing 1+00 shall start at centerline of street intersection or centerline of manholes unless otherwise noted. Please see attached location map with notations of recommended starting point of Station. iv.Redwood City Datum shall be used in preparing the topographic survey. The City will provide the location of the nearest benchmark if required. Benchmark information used shall be noted on the topographic survey. North American Vertical Datum of 1988 (NAVD88) shall be used. All data on other vertical datums shall be converted to NAVD88. The North American Datum of 1983 (NAD83) shall be used as horizontal and geometric control datum. ATTY/AGR.2021-Amend No. 1/BKF Engineers, Surveyors, Planners (Page 5 of 7)