2 - EIR18-01; DA18-01; GPA18-06; AA18-10_2525 N MAIN STREET

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EXHIBIT A Resolution No. _____ Page 33 of 76 Certification of the Magnolia at the Park EIR that does not contain or is adjacent to large slopes, and the Project would not generate large slopes. Furthermore, as stated in the Geotechnical Engineering Investigation prepared for the Project site, the Project site is not at risk for earthquake induced landslides. For the foregoing reasons, implementation of the Project would not expose people or structures to substantial adverse effects involving landslides, and impacts related to landslides would not occur. (Initial Study, p. 31.) This conclusion also applies, for the same reasons, to the Modified Project. 9.6.2 Soil Erosion Threshold: Would the Project result in substantial soil erosion or the loss of topsoil? Finding: Less than significant impact. (DEIR, p. 2-6; Initial Study, pp. 31-32.) Facts in Support of Finding: The Project site is largely impervious, as it is generally covered by pavement or the building structure. However, small areas of landscaping exist within the parking area, along the site boundary, and adjacent to the existing building. The Project would redevelop the site for multi-family residential uses, which would include areas of landscaping that would surround the proposed structures and be located along the site boundary, similar to the areas of landscaping that currently exist. The new paved areas and landscaping from the Project would not result in soil erosion or the loss of topsoil. In addition, Section 18-156 of the City of Santa Ana Municipal Code states that all significant redevelopment within the City, such as the Project, shall be undertaken in accordance with the County Drainage Area Management Plan (DAMP). The DAMP requires construction sites to implement control practices that address erosion and sedimentation (DAMP Section 8.0). Additionally, the Statewide National Pollutant Discharge Elimination System (NPDES) Permit for General Construction Activity requires implementation of a Storm Water Pollution Prevention Plan (SWPPP), by a Qualified SWPPP Developer. The SWPPP is required to be consistent with the County DAMP, address site-specific conditions related to sources of sediment, and implement erosion control and sediment control Best Management Practices to reduce or eliminate sediment during construction. The Project is required to adhere to a City approved SWPPP, which would be verified prior to the issuance of a demolition or grading permit; this will ensure that potential erosion associated with construction activities would constitute a less than significant impact. (Initial Study, pp. 31-32.) This conclusion also applies, for the same reasons, to the Modified Project. 9.6.3 Soil Stability Threshold: Would the Project be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the Project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse? Finding: Less than significant impact. (DEIR, p. 2-6; Initial Study, p. 32.) Facts in Support of Finding: The Project site does not contain unstable soils or unstable geologic units. As discussed above, the Project site is located in a flat, developed urban area that does not contain, and is not adjacent to, large slopes; moreover, the Project would not generate large slopes. Accordingly, impacts related to landslides would not occur as a result of the Project. Also, as discussed above, the depth to groundwater and the types of soils onsite result in a low potential for liquefaction and related lateral spreading or ground failure. In addition, as further discussed above, the Project would be required to have building foundations and pavement areas and must be constructed in compliance with the CBC and the 2-63