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EXHIBIT A- SCOPE OF SERVICES Task 2—Data Collection and Review Subtask 2.1 — Background Information and GIS Data Review. This subtask includes the collection and review of information needed for the study. Woodard & Curran will prepare a request list of additional or updated data and information that may be relevant to the study effort. The information may include additional data, facility information and other required information including but not limited to: • The City's most current digital collection system map and database in GIS; • Current GIS base mapping, including parcels, streets, and other relevant layers; • Digital mapping related to the City's general plan or other specific planning areas, as available, including planning maps and data used for the City's water system capacity evaluation project; • Record drawings of any sewer facilities for which up-to-date data is not included in the current GIS; • Pump station SCADA data, record drawings and operating information; • Latest County tax assessor's database for the City's service area or similar City database, which includes parcel land use information, or parcel data related to land use, dwelling units, lot sizes, etc; • Water consumption data by parcel (e.g., monthly water use for winter months for past 2 to 3 years), as available; • Water demand estimates and factors developed for the Tri-Valley Demand Study and the City's ongoing water distribution system modeling and capacity evaluation project; • Historical SSO and maintenance records and information on known sewer"hot spots"; • Historical cost data/bid tabulations from City sewer projects; • City design standards and specifications; • Sewer model developed for the City's 2007 Wastewater System Master Plan and converted/updated for the 2013 East Amador Relief Sewer Pumping Station project; Woodard &Curran will review the data in order to assess the information available for preparing the study. For any data that is not available but critical for the study, Woodard & Curran will recommend an approach for obtaining the information or making use of existing data and will discuss this approach with the City. Subtask 2.2a—Supplemental Field Surveying. Based on the data review and initial model network development under Task 3, Woodard & Curran will identify locations for supplemental field surveys to fill in data missing in GIS or resolve data discrepancies. The purpose of the field surveys will be to obtain missing rim and invert elevations for critical manholes and other structures. The survey work will include surveying of up to 50 manholes, consisting of locating the horizontal and vertical location of all sanitary sewer infrastructure including the following: • X&Y coordinates and elevations of manhole rims (provided in Excel or equivalent format) • Pipe sizes, depth to pipe invert, direction of flow, and compass positions (NW, E, etc.) of all inlet and outlet pipes • Notation and relevant elevations of any unusual features observed in the manholes, including but not limited to manholes with more than one outgoing pipe, weirs (surveyor to note weir orientation and record width and depth to top of weir), overflow sewers, concrete or other intentional blockages, and gates (surveyor to capture dimensions and height of gate opening). • In the case of drop manholes, invert elevations shall be collected at both upper and lower incoming pipes for inside drop manholes. Woodard &Curran -2- 12/20/21