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Responses to <br />Environmental Checklist <br />For CEQA Compliance <br />B. Would the project result in substantial soil erosion or the loss of topsoil? <br />Less than Significant With Mitigation Incorporated <br />Erosion refers to the removal of soil from exposed bedrock surfaces by water or wind. The effects of <br />erosion are intensified with an increase in slope, the narrowing of runoff channels and by the removal of <br />groundcover, which leaves the soil exposed. Construction operations for the proposed project would <br />require excavation of onsite soils. The uncovered soils on the project site could potentially result in <br />erosion and sedimentation impacts to onsite and offsite drainage facilities. This potential impact could <br />increase during periods of rain. To minimize potential erosion impacts, the proposed project would be <br />required to employ the following Best Management Practices during construction operations. <br />Mitigation Measure <br />Prior to the issuance of grading permits, the project developer shall provide proof of coverage <br />under NPDES General Construction Activity Storm Water Permit that includes: (a) A copy of the <br />project's permit issued by the State Water Resource Control Board that identifies the permit <br />number, (b) Two copies of the Storm Water Pollution Prevention Plan. <br />Submit and have approved a surface drainage/utility plan that depicts all applicable "Site Design" <br />structural "Source Control" and "Treatment Control" Best Management Practices (BMPs) in <br />accordance with the Orange County Drainage Area Management Plan (DAMP) and the City of <br />Santa Ana Local Implementation Plan (LIP). <br />Submit for approval a surface drainage/grading/erosion control plan. The plan is to include <br />existing and proposed elevations at and adjacent to all property lines. Drainage routed to the <br />street must be directed beneath the sidewalk and through the curb. <br />C. Would the project result in the loss of a unique geological feature? <br />No Impact <br />According to the City's General Plan Land Use Element EIR, the project site does not contain any unique <br />geologic features. Therefore, implementation of the proposed project would not result in adverse impacts <br />to any unique geologic feature. <br />D. Is the project located on strata or soil that is unstable or that would become unstable as a <br />result of the project and potentially result in on-or off-site landslide, lateral spreading, <br />subsidence, liquefaction or collapse? <br />Less Than Significant Impact <br />According the City's General Plan Land Use Element EIR, the project site is located within the SD-60 <br />project area which consists of Chino Silty Clay Loam Soils that have moderate shrink/swell potential, high <br />corrosion potential to uncoated steel and low potential for corrosion to concrete. The soil conditions on <br />the project site would not provide a constraint that would prevent the development of the proposed project. <br />As part of the City's development review process a geotechnical study would be prepared to identify <br />geotechnical design recommendations to ensure the long-term geotechnical stability of the project site. <br />Page 2i7~~~~'T <br />