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Hana Japan Steak House 5150.100.001 11991 Dublin Canyon Road November 11, 2024 RESPONSE TO COMMENTS Page 4 Comment 10 Geotechnical Report, Section 5.4.3 (2007 CBC Seismic Design Parameters): We understand these parameters have been superseded by the those provided in the CBC update Letter. However, please refer to Comment #1 above regarding Site Class characterization and seismic design values at the Site. ENGEO Response to Comment 10 Response to Comment 1 addresses this. Comment 11 Geotechnical Report, Section 5.5 (Soil Corrosion Potential): Same as Comment #7 above ENGEO Response to Comment 11 Please see Response to Comment 7. Comment 12 Geotechnical Report, Section 6 (Earthwork Recommendations): General Note: Throughout the Geotechnical Report, when referring to earthwork recommendations, Section 4 is referred to. These references should be updated to refer to the correct subsections in Section 6. ENGEO Response to Comment 12 We will add a clarifying section in the Reference 2 update. Comment 13 Geotechnical Report, Section 6.1 (Expansive Soil Mitigation): a. In the statement that indicates no expansive clay should be placed within the upper 3 feet of building pads, the top of the building pad should be defined such as finished subgrade or bottom of slab. b. This section of the report should state what type of soil material should be used to replace expansive (soil) material that is removed from the upper 3 feet of the building pads. BSK assumes the replacement soil material would consist of a low expansion potential soil having a plasticity index of less than 12 per Section 6.5 of the Geotechnical Report. ENGEO Response to Comment 13 a. We will define the term “building pad” in the Reference 2 update. b. We will add a comment on recommended fill for building pads. Note, building pads will likely be excavated into sandstone in most areas based on depths to bedrock encountered in explorations in building pads shown in Figure 2 of Reference 2 and elevations shown in Sheets C3 and C4 of “Improvement Plans for Hana Japan” by Alexander & Associates Inc., dated March 19, 2024. We opine that the chance of encountering significant clay in the building pads is low. To be consistent with non-expansive sandstone, we will recommend either processed excavated sandstone or low plasticity import be used to backfill any pockets of clay to be removed from the building pads. Exhibit 1 shows the location of the previous borings, along with the building location and existing and planned grades.