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topographic survey data, site soils/geology data, infrastructure locations, wastewater effluent quality, and land ownership details. DELIVERABLES: Summary compilation of previous data, design drawings/details and report sources collected and reviewed to support the design development. TASK 2.2 — COLLECTION OF SITE TOPOGRAPHY AND UTILITY DATA Towill, Inc., in coordination with the lead Terraphase Civil Engineer (Hans Kramer) will conduct professional surveying services to augment existing topography and investigate property boundary, utility, easement and land ownership constraints. Towill previously performed surveying and mapping at the San Leandro WPCP in 2009 and 2016, and at the neighboring basin in 2008. Detailed site topographic and boundary surveying will support development of the base map for the construction design drawings, will determine and verify specific tie-in locations, and will identify specific landscape features such as existing levee cross-sections. A combination of global positioning system (GPS) technology and conventional land surveying equipment and techniques will be employed to establish horizontal and vertical control. Utility locations will be field surveyed and reflected in the updated topographic mapping. Property corners and easements will be researched and identified. Results of a title search will be provided identifying easements, covenants, use restrictions, or other encumbrances on the property. A detailed topographic survey of the Site will be performed including additional coverage in adjacent areas immediately outside the Project limit of work. The field survey will pick up all the surface and visible underground improvements throughout the Site to facilitate the Project design and to support potential future site improvements. Utility line locating and/or potholing will be provided to accurately identify existing utilities throughout the site. We will survey all locations/alignments, rims, grates and invert elevations of all visible sanitary sewer and storm drain structures within the Site, and immediately upstream and downstream of the existing infrastructure inlet and outlet points, based on the established datum and local control points. DELIVERABLES: • Summary of ground (photo) control coordinates and brief descriptions of the points including the primary control monuments used as the basis for our horizontal and vertical surveys. • Condition of Title Report • Set of 1,000 dpi copies of the aerial photography site imagery in JPEG format • Site topography, utility and property survey in AutoCAD format (including boundary lines and easements) [AutoCAD drawing files and/or MicroStation design files containing the digital plan imetric/topographic map and digital terrain data] • Existing conditions site plan and base map for construction design drawings TASK 2.3 — ASSESSMENT OF SITE OPPORTUNITIES AND CONSTRAINTS AND EXISTING DATA GAPS Consulting Services Agreement between City of San Leandro and Last revised September 10, 2019 Terraphase Engineering for Treatment Wetland Design Services Exhibit A — Page 21 of 38