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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration 24 planned for overwater work and would therefore have no impact on the land based historical resources. Additionally, no rock outcroppings are known from this area and no structures or buildings are disturbed. While there would be a less than significant impact to scenic resources, implementation of Mitigation Measure MM AES-1 would further avoid, minimize and/or reduce the potential for impacts. c) Would the project substantially degrade the existing visual character or quality of public views of the site and its surroundings? Less than Significant Impact. The Proposed Project is not expected to substantially degrade the existing visual character or quality of public views of the Study Area or surroundings due to the small footprint, temporary nature of the work, and lack of any permanent structures associated with the Proposed Project. While there would be a less than significant impact to existing visual character and quality of public views, implementation of Mitigation Measure MM AES-1 would further avoid, minimize and/or reduce potential impacts. d) Would the project create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? No Impact. The Proposed Project is not expected to create a new source of substantial light or glare which would adversely affect day or nighttime views in the area. Lighting may be used on barges or drill ships; however, it is not expected to adversely affect day or nighttime views. No permanent structures would be installed, and the Proposed Project does not include the use of equipment that would have reflective properties such that a substantial daytime glare would be created during soil investigation activities. While there would be no impact to permanent day or nighttime views in the area, implementation of Mitigation Measure MM AES-2 would further avoid, minimize and/or reduce the potential for any glare-related impacts. MM AES-2: a. Navigational lighting will be used as needed for overwater work, but will meet the standards required for waterway safety, and will not increase the existing ambient lighting of the area in a substantial way. Any lighting used on barges or drill ships will not exceed the standards of brightness for standard navigational safety requirements. b. All work will occur between sunrise and sunset.