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One Broadway Plaza Environmental Impact Report Findings and Facts in Support of Findings 4.2.1.2 Findings Related to Topographv. Geology and Soils Changes or alterations have been required in, or incorporated into, the One Broadway Plaza project which avoid or substantially lessen the significant environmental effect as identified in the EIR. 4.2.1.3 Facts in Support of the Findings Related to To~ography and Soils Implementation of mitigation measures G-l and G-2, provided below, will substantially lessen the adverse impacts of the One Broadway Plaza project related to topography and soils, and will reduce these potentially significant adverse impacts to below a level of significance. G-l The design for the project will comply with all provisions of the Preliminary Geotechnical Feasibility Investigation perfonned by Zeiser Kling Consultants and their Addendum Recommendations, including recommendations for grading, removal and recompaction of soils, foundations, settlement, pile foundations, design criteria, seismic design, retaining walls, ferrous corrosion, surface drainage, pavement design, concrete hardscape, soldier pile/logging system and supplemental investigations. G-2 Prior to acquiring a grading pennit for project construction, the developer will prepare a Final Geology and Soils Report, to specifically assess the following: 1. The shrink-swell potential of potentially expansive soils on the site; specifically addressing appropriate recommendations for soil treatments, grading procedures and/or foundation designs, as appropriate, for the planned land use on the site. 11. The potential for compressible soils on the site; specifically addressing appropriate recommendations for soil treatments, grading procedures and/or foundation designs, as appropriate, for the planned land use on the site. The recommendations from the Final Geology and Soils Report will be incorporated into the grading plan for the project. 4.2.1.4 Level of Significance of Impact Related to Topographv and Soils The adverse impacts of the One Broadway Plaza project related to topography and soils will be mitigated to below a)evel of significance. 4.2.2.1 Potentially Significant Adverse Impact Related to Fugitive Dust As described in detail in Section 3.2 (Topography, Geology and Soils) in the EIR, construction of the One Broadway Plaza project will create dust. U/vfregoso/wp51/reports/One Broadway final findings June 28, 2004 Page 20