Consistent with the need to evaluate the alternatives in the Delta Conveyance Project EIR, DWR has approved modifications to the soil investigations that were originally approved in July of 2020. Before considering the approval of the modifications, DWR prepared an addendum to the Final Initial Study/Mitigated Negative Declaration (IS/MND) for the soil investigations in the Sacramento-San Joaquin Delta (Delta). DWR considered both the Final IS/MND that was adopted in July 2020 and the Addendum prior to approving the project modifications. The approved modified soil investigation activities, as evaluated in the Addendum, include the removal and replacement of geotechnical investigation sites not previously evaluated in the Final IS/MND. DWR has determined and documented that these changes will not result in any new potentially significant impacts and no subsequent EIR or negative declaration is required.