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curb and gutter that are damaged to the extent that they will affect pavement rehabilitation (i.e., tree root damage extending into pavement). Consultant will notify City of extensively damaged or offset curb and gutter, and discuss repair approaches to such locations; additional time may be required to complete the surveys. Prior to survey of the curb and gutter, consultant will meet with the City and establish condition criteria for assessment and replacement. Based on the criteria established with the City, consultant will then determine what level of curb and gutter replacement will be pursued for design plans and documents. Sidewalk replacement is not included in this scope of work but can be added, if required, for additional scope and fee. 26) Pavement Deflection Testing: Consultant will perform non-destructive pavement deflection testing in accordance with California Test Method (CTM) 356 to evaluate the structural capacity of the existing pavement section on the subject arterial and collector streets. The Falling Weight Deflectometer (FWD) is a conceptually simple yet powerful device for measuring the response of pavements under simulated wheel loads and estimating their structural capacities. All travel lanes of each arterial and collector street section will be tested at approximately 100 -foot intervals that will be staggered at one-half the test interval length in adjacent lanes or the opposite lanes of traffic. Separate data files will be established for each travel direction so that separate analyses can be performed, if desired or warranted. Approximately 410 data points will be collected; it is estimated that the FWD testing will take 2 days to complete. The final number of data points to be collected may change to accommodate field constraints. Consultant will arrange for traffic control services during the deflection testing to minimize any inconvenience to traffic, parking and public access. Traffic control will conform to the latest standards contained within the Manual of Uniform Traffic Control Devices (MUTCD) Part VI and the Caltrans Traffic Manual Chapter 5 "Traffic Control for Construction and Maintenance Work Zones," as well as any local requirements that exist. Consultant will apply for and obtain a no -fee encroachment permit from the City prior to starting the deflection testing. Preparation of individual traffic control plans for deflection testing is assumed not to be required. 2C) Pavement Coring: Consultant will collect pavement section core samples (4" — 8" diameter cores) on all street sections at locations determined by consultant. Pavement cores will be obtained approximately every 1,000 to 1,500 feet or less with a minimum of two core samples per street. A minimum of one pavement core at each intersection identified for the 2020 Pedestrian Crossing Improvements will be taken (Aurora Drive and Walnut Drive, Williams Street and Joyce Street, and Monterey Blvd and Anza Way) to support pavement design recommendations for potential pavement regrading to meet ADA requirements. It is estimated that up to 61 core locations will be performed. For each core sample, consultant will measure and record the thickness and material type of each layer encountered in the pavement structural section, including the presence of any pavement reinforcing fabric. Consultant will collect bulk samples of subgrade in support of potential street reconstruction. Consultant will collect bulk samples of subgrade materials at the core locations for laboratory testing such as R -value, moisture content and Atterberg Limits (plasticity index) determinations. It is assumed that up to 20 bulk Consulting Services Agreement between City of San Leandro and Nichols Consulting Engineers for Annual Street Overlay/Rehabilitation 2019-21, Project No. 2020.0050 Exhibit A — Page 4 of 10