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• Review background information and interpret historic photos and maps and complete an initial “desktop” geomorphic assessment of the project site. • Consultant shall review and leverage, to the extent practicable, an assortment of existing studies and prior work that has been completed at the site, including the Marsh Manual (ESA 2007) and Long Beach Levee Breach Ecological Evaluation (Wood Biological Consulting 2020), as well as regional planning guidance documents, including the New Life for Eroding Shorelines report (SFEI & Baye 2019), the Baylands Ecosystem Habitat Goals (Goals Project 1999, 2010, and 2015), and the San Francisco Bay Shoreline Adaptation Atlas (SFEI 2019). • Consultant shall synthesize the existence studies and information in a brief memo to raise additional questions and highlight potential data gaps. • Consultant shall carefully consider what data gaps exist and propose how to fill those gaps. Consultant shall coordinate with the city to discuss the implications of the identified gaps on the ability to complete the current proposed project and future phases. Task 4.1 Deliverables • Memo summarizing review of background information and synthesizes prior studies and historical maps and photos, in PDF format. • Memo summarizing identified data gaps (if required) in PDF format Task 4.1 Schedule • Memo report: Six weeks from Notice to Proceed (NTP) Task 4.2 Topographic and Bathymetric Surveys Consultant shall prepare a field data collection plan shortly after the review of the background data and initial site reconnaissance. The field data collection plan shall be circulated for review by the City and TAG. Consultant may survey the project area using a combination of the following three methods: • Bathymetric data from a boat during high tide with an echosounder • Topographic data using drone during low tide (structure-from-motion, photogrammetry, LiDAR, or similar methods of comparable accuracy and quality) • Targeted ground survey during low tide to verify and augment both the bathymetric and drone survey. Task 4.2 Deliverables • Proposed survey plan in PDF format • A brief technical memorandum describing the survey data collection methods, dates of data collection, survey control, and graphics showing the spatial extents of the collected data.