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City of Pleasanton Phase 1A Recycled Water Distribution System Design Final Draft • City GIS is tied to California State Plane coordinate system,Zone 3 (NAD 83), for horizontal and to NAVD 88 for vertical • City will provide existing city monument locations and data suitable for use in establishing control points for project surveys and tied to the City GIS mapping and datums • Consultant will not provide project wide topographic surveys but will only supplement available mapping through ground surveys and only as authorized in advance by the City • Mapping will be compiled using the City GIS mapping as a base and supplemented with survey data obtained for the project • If City GIS mapping is determined to be inadequate by Consultant and City, additional survey and mapping scope and budget will be required for authorization by City Subtask 3.2 Deliverables: • Meeting agenda,materials and summary(.pdf format via email) Subtask 3.3: Geotechnical Investigation Consultant's geotechnical subconsultant shall perform geotechnical engineering work for the Pleasanton Recycled Water project pipelines, including: • Reviewing readily available and relevant published geologic and geotechnical information, including from USGS and other resources • Analyzing available geotechnical data and preparing design and construction recommendations for Project facilities including pipelines and appurtenant structures • Evaluating seismic hazards including fault rupture, liquefaction potential, and seismic site classification in accordance with the latest version of the California Building Code(CBC)utilized by the City. • Preparing draft geotechnical engineering report with findings and recommendations for design and construction of the facilities. • Finalizing draft geotechnical engineering report. The final report will include: 1) incorporating a single set of written comments received and 2) updating the project description, findings, conclusions, and recommendations in draft report to reflect any minor redesigns. Subtask 3.3 Assumptions: • City will provide available geotechnical data from project area • The City has elected to not do soil borings for the project and instead rely on available geotechnical data. The added associated risk of potential changed conditions claims by a construction contractor is accepted by the City. The Consultant and its' geotechnical engineering subconsultant will use appropriately conservative assumptions and criteria in design of the project pipelines and related facilities. Subtask 3.3 Deliverables: • Draft geotechnical report(one hardcopy and one .pdf) • Final geotechnical report(one hardcopy and one.pdf) Subtask 3.4: Utility Research and Coordination The City has gathered utility information for the anticipated pipeline locations. The City will provide the initial utility records received from all utility owners along the pipeline alignments. Consultant will develop base maps showing utilities and shall send mapping and `B" letters back to each utility for Scope of Work Revs Page 5 of 17 August 20,2014