The geotechnical data currently being evaluated consist of summary reports, well drilling reports and/or soil investigations by DWR (including flood projects), Caltrans and other state agencies. These data files include confidential personal information (e.g., property owner names). Due to the confidential nature of these files, most of the individual well logs and soil borings cannot be released. Soil boring data was provided for several locations in previous conceptual engineering reports for canal alignments in the eastern and western Delta and a central-Delta tunnel alignment. Soil boring data was also summarized in the following reports as part of previous studies: