CSA Nichols Consulting Eng. Lewelling Blvd Class IV Bike Ways Prg.

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Consulting Services Agreement between City of San Leandro and Last revised June, 2025 NCE for Lewelling Blvd. Class IV Bike Ways Project Exhibit A – Page 3 of 9 NCE will review relevant available data and records from the City and other sources that may be appropriate to support the preparation of project contract documents. These may include, but are not limited to, as-built street improvement and infrastructure plans, including any preliminary plans for future work that may conflict or impact this project. The gathered information will be compiled and included in the base map used for design. A visual assessment of all curbs will be included to identify areas where drainage, the adjacent pavement, or the existing AC curb has been compromised. Based on criteria established with the City, NCE will determine what level of curb and gutter replaceme nt will be pursued for design plans and documents. Record data will be shown in their approximate location. Utility depths from the GPR survey (Optional Task 7) and available as-builts will be included in the base map. Based on NCE’s review, NCE will identify any data gaps or missing information and provide this information to the City for review and discussion. Task 2A Deliverables: Included in subsequent tasks. 2B Topographic Survey NCE’s topographic surveyor, Mountain Pacific Surveys, will complete monument/control recovery, field investigation, and field surveys sufficient to prepare a topographic mapping product for Lewelling Boulevard. The mapping shall be compiled at an agreed -upon scale with a 1-foot contour interval and will be based on the City Datum. The mapping area shall be a corridor along the street section between the City right-of-way boundaries, typically assumed to be back of walk to back of walk, starting and stopping at the Wicks Boulevard and Washington Avenue intersections, and including th rough the returns of these terminating streets. The mapping will extend 25 feet beyond the curb and return up each intersecting side street. The topographic data to be collected is more specifically defined as: • Cross-sections at 50-foot intervals along with detailed surface topography and/or additional spot elevations as required, defining the longitudinal and cross -slope grade breaks. • Surveyed locations for significant surface features. A structure inventory for sanitary and storm drain facilities reflecting rim and invert elevations, pipe direction, and size will be provided for accessible structures. • Location of all surface-evident street monumentation within the mapping corridor. • Location of underground utility locator markings, where provided (Optional Task 7). • Provide a finished draft topographic survey for each area of work and AutoCAD Civil3D DTM surface. NCE’s surveyor will calculate the record data location of the existing right-of-way for the mapping corridor and will calculate and show the location of each adjoining parcel lot line from record data (assessor’s parcel data, record mapping, and apparent lines of occupation). It should be noted that property line data will not be based upon a field survey and is considered approximate. Task 2B Deliverables: Topographic survey results. 2C Review City Traffic Study and Reporting and Existing Conditions Under this task, NCE’s traffic engineering subconsultant, Fehr & Peers, will review previously prepared traffic operational analysis along Lewelling Boulevard to determine the appropriate signal phasing at Docusign Envelope ID: 213129C2-DE35-4B27-B32D-B0EE23A6898E