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engineer, Cotton Shires and Associates). The design-level report shall address the following impacts and mitigation measures: a. To ensure that existing landslides are properly identified, repaired, and areas of unstable soils are stabilized, the report shall evaluate each proposed lot for geotechnical suitability. If unstable soils and/or slopes could affect areas within designated lot boundaries, these areas shall be clearly demarcated on an engineering geologic map and repaired prior to issuance of the building permit. (Mitigation Measure F-2-a of the FEIR) b. To ensure that structures or property are not adversely affected by expansive and/or corrosive soils, the report shall include design standards for the proposed building foundations and improvements, including sidewalks, parking lots, and subsurface utilities, and shall incorporate measures to ensure that potential damage due to the shrink/swell potential of the site's soils is minimized. The preliminary geotechnical report indicates that expansion could be on the order of several inches and that additional laboratory testing and analysis during a design-level geotechnical investigation is required. This additional testing and analysis shall be conducted and the results incorporated into the recommendations of the design-level geotechnical investigation. (Mitigation Measure F-3-a of the FEIR) c. Site soils are to be tested and evaluated for corrosivity. If corrosive soil conditions are present, the report shall identify the appropriate measures to mitigate these conditions that shall be incorporated into the design of project improvements that may come into contact with site soils. Wherever corrosive soils are found in sufficient concentrations, recommendations shall be made to protect iron, steel, metal, and concrete from long-term deterioration caused by contact with corrosive onsite soils. (Mitigation Measure F-3-a of the FEIR) d. To ensure that buildings and other subdivision improvements are not damaged by differential settlement at the project site, the report shall include specific recommendations for mitigating potential settlement associated with native soil/fill boundaries and areas of different fill thickness, including recommendations for dealing with differential cut and fill that would affect building pads, streets, and utilities. (Mitigation Measure F-4-a of the FEIR) e. The design-level geotechnical report shall include a review of proposed storm water drainage improvements including outfalls and water quality features. A percolation test of each detention basin shall be provided to demonstrate drain-down in three days. The report shall be subject to the review and approval by the City Engineer and will require a review and approval by a geotechnical peer review consultant selected by the City. The recommendations specified in the report and by the peer review geotechnical consultant shall be incorporated into the development's City Council October 2, 2007 Page 29 of 41