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DocuSign Envelope ID: B6332ADE-FC6B-4804-B30C-B48CD37F916F
<br />Task 3 — Plans, Specifications & Estimates (PS&E)
<br />The work that will be performed during the development of design PS&E are outlined in the subsequent
<br />tasks.
<br />3A) Design Data Gathering:
<br />Consultant will review relevant available data and records from the City, public and private utility providers,
<br />and other sources that may be appropriate to support the preparation of project contract documents, These
<br />may include but are not limited to the City drainage structure inventory maps, aerial photographs of the
<br />City, as -built street improvement and infrastructure plans, striping and markings, as -built plans from utility
<br />providers, including any preliminary plans for future work that may conflict with this project. The gathered
<br />information will be compiled and included in the topographic surveys used for design.
<br />Consultant has assumed that the City will be able to provide the following:
<br />1. Any information readily available regarding utilities (i.e,, water, sanitary sewer, electrical, and storm
<br />drain), boundary and property limits (if available), tree locations, site features and existing
<br />construction as is available from City.
<br />2. Readily available aerial maps.
<br />3. As -built drawings for existing lighted pedestrian crossing facilities (i.e. wiring, structures) on the
<br />overlay program street list and the 2020 Pedestrian Crossing Improvements.
<br />4. Indicate any other planned improvements adjacent to the 2020 Pedestrian Crossing Improvements.
<br />313) Topographic Survey and Preliminary Design:
<br />Consultant will complete monument/control recovery, field investigation and field surveys sufficient to
<br />prepare a topographic mapping product for all streets in the project. The mapping shall be compiled at an
<br />agreed upon scale with a 1' contour interval and will be based on the City Datum.
<br />The mapping area shall be a corridor along each of the street sections between the existing back of walk to
<br />opposite back of walk, starting and stopping at the designated locations and including through the returns
<br />of the terminating streets. In the absence of an existing sidewalk, the survey will extend to 5 feet behind the
<br />curb or edge of pavement, or up to the first substantial barrier (wall, fence, etc.), whichever occurs first.
<br />Lastly, the mapping will extend 25 feet beyond the curb return up each intersecting side street.
<br />The topographic data to be collected for the Annual Overlay/Rehabilitation street list is more specifically
<br />defined as:
<br />• Cross-sections at 50' intervals along with detailed surface topography and/or additional spot
<br />elevations as required defining the longitudinal and cross slope grade breaks. Typically the cross
<br />section will include back of walk, top of curb, flowline and lip of gutter, pavement % point (if one
<br />exists), and pavement centerline.
<br />• Surveyed locations for significant surface features, such as curbs, gutters, sidewalks, driveways,
<br />misc. concrete, pavement, striping, fences, surface utilities, trees, signs, street lights and signals
<br />will be included. A structure inventory for sanitary and storm drain facilities reflecting rim elevations,
<br />invert elevations, pipe direction and pipe size will be provided for accessible structures within the
<br />mapping limit. To the extent visible, consultant will obtain a measurement from the top of manhole
<br />rim to the top of cone, and note any adjustment rings. Consultant shall not enter a manhole to
<br />obtain any data.
<br />Consulting Services Agreement between City of San Leandro and Nichols Consulting Engineers
<br />for Annual Street Overlay/Rehabilitation 2019-21, Project No. 2020,0050 Exhibit A— Page 6 of 10
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