Item 20 - Authorize Agreement with Mark Thomas & Company, Inc.

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PROPOSAL STANDARD AVENUE PROTECTED BIKE LANES 3RD TO WARNER City of Santa Ana Mark Thomas will implement and maintain these quality control procedures during the preparation of plans and documents throughout the project. TASK 1.5 DELIVERABLES: • Quality Control Check List at Milestone Submittals TASK 2. PRELIMINARY ENGINEERING Task 2.1. Utility Mapping/Data Gathering Mark Thomas will perform research at the City, County, State, utility companies and other agencies to obtain as-builts and record maps of the project limits. This includes preparation and mailing of the Utility “A” letter upon City approval. Mark Thomas will obtain mapping from utility companies and develop a base map. A Utility Matrix will be created to track discussions and data received from utility agencies. Mark Thomas, with City staff, will perform a walking audit prior to concept development and 30% plans to identify anticipated Americans with Disabilities Act (ADA) upgrades at intersections and driveways along the corridor, define locations for bus stops, and identify potential impacts to parking. This effort will define the limits of ADA improvements to be included in the final design plans. TASK 2.1 DELIVERABLES: • Utility “A” Letter • Utility base mapping • Walking Audit Task 2.2. Topographic Surveys and Base Mapping Control Survey Network All Mark Thomas survey work for this project will use horizontal control based on the current Orange County horizontal control datum which is the CCS83, zone VI, 1991.35 and 2007.00 epoch adjustment. The Orange County network consists of approximately 2700 stations located on a ½ mile grid throughout the developed areas within the county. The majority of these stations have recorded cadastral references and all of them along with OCRTN, can be used to comply with the Ordinance 3809 Basis of Bearings requirement. Mark Thomas will establish the Horizontal and Vertical control network consisting of 22 aerial control ground targets required to control the aerial photogrammetry and LiDAR data acquisition. During the establishment of the Control Network, Mark Thomas will locate survey monuments in project area. Additional Survey work required to satisfy Monument Preservation is not included in this proposal or scope, only initial monument location. Supplemental base mapping and design surveys will be acquired through detailed field topography in areas designated by the Engineering Team. Record Data will be used to establish the Right Way along the project area and note any areas of possible encroachments that could impact the project schedule. If any such areas are found, additional boundary survey work may be required (additional Boundary Survey work is not a part of this scope or fee proposal). Photogrammetric Mapping Aerotech Mapping will provide photogrammetric mapping for the 2.2-mile segment on Standard Avenue. The photography will consist of 2 flight lines and 29 exposures utilizing 3.5cm digital imagery. Accuracies of plus or minus 0.23’ can be expected as it relates to the topographical information generated from the Digital Terrain Modeling (DTM) information. Accuracies of plus or minus 0.153’ can be expected as it relates to the DTM information itself.