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Sequoia Ecological Consulting, Inc. CalVTP Project-Specific Analysis and Addendum Augustin Bernal Community Park Fuel Reduction November 2025 4-52 4.6.1.2. Impact GEO-2 Proposed treatment activities, such as vegetation removal and prescribed burning, which limit vegetative cover and impact root systems, could diminish the stability of soils, potentially increasing the risk of landslides. The PEIR identified the potential for treatment activities to increase the risk of landslides as less than significant. Because the treatments being proposed are analyzed in a manner consistent with the treatments in the PEIR, the potential impact falls within the PEIR scope. Additionally, implementing SPRs AD-3, GEO-1, GEO-3, GEO-4, GEO-7, GEO-8, and AQ-3 would minimize the potential for landslides created by project treatments. SPR GEO-1 would require that soil-disturbing activities be put on hold during precipitation; SPR GEO-3 would require that treatment areas be inspected for correct erosion control measures prior to the start of the rainy season and following the first large rain event; SPR GEO-4 would require that treatment areas be inspected for proper erosion control measures; SPR GEO-7 would minimize erosion resulting from the use of heavy equipment and herbivory that is prescribed on slopes; SPR-8 would require an RPF or licensed geologist to evaluate treatment areas with slopes greater than 50 percent for unstable areas (areas with potential for landslide); and SPR AQ-3 would minimize the severity of soil burn to reduce the potential for landslides caused by the destabilization of root structures and the loss of vegetative cover. As discussed in Impact GEO-1, the proposed treatment area includes land that is outside of the CalVTP treatable landscape. While this constitutes a change to the geographic extent that is outlined in the PEIR, the slopes and landslide conditions of the project area that are within the treatable landscape are equivalent to the areas outside of it. SPRs would also be implemented as described above. For these reasons, the potential impact related to the risk of landslides would not differ from what was discussed in the CalVTP. Therefore, proposed treatments outside of the original area covered in the CalVTP treatable landscape would not constitute a substantially more severe significant impact than what was analyzed in the PEIR. 4.6.1.3. New Geology, Soils, Paleontology, and Mineral Resource Impacts The proposed treatments are consistent with the treatment types and activities evaluated in the CalVTP PEIR. The project proponent has considered the site-specific characteristics of the proposed treatment project and has determined they are consistent with the environmental and regulatory settings discussed in the PEIR. The project proponent has also determined that the inclusion of the portion of the project area that is outside the CalVTP treatable landscape constitutes a change to the geographic extent presented in the PEIR. However, the existing environmental and regulatory conditions pertinent to geology and soils that are present within the treatable landscape are essentially the same as those areas outside the treatable landscape. Therefore, the impacts of the proposed project are also consistent with those