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KLE/NFELOER �Bright People.Right Solutions. 5 CONCLUSIONS AND RECOMMENDATIONS 5.1 GENERAL From a geotechnical standpoint, the proposed construction is feasible provided the recommendations presented in this report are incorporated into the project design and construction. The following sections discuss conclusions and recommendations with respect to California Building Code (CBC) design considerations, site preparation and grading, pavements, and foundation design. 5.2 SITE PREPARATION AND EARTHWORK CONSTRUCTION 5.2.1 General It is anticipated that site grading and excavations can be performed with conventional grading/earth moving equipment and techniques. General recommendations for site preparation and earthwork construction are presented in the following sections of this report. All references to compaction, maximum density and optimum moisture content are based on ASTM D1557, unless otherwise noted. 5.2.2 Stripping and Grubbing Prior to general site grading, surface vegetation, organic topsoil, and any debris should be removed and disposed of outside the construction limits. Depending on the concentration of vegetation, it may be possible to mow and rake off the surface vegetation and disc the remaining roots into the surface during subgrade preparation. The organic content of the disced soil (as determined by loss-on-ignition tests) should not exceed 5 percent by weight. Deep stripping will be required where concentrations of organic soils or tree roots are encountered during site grading. The depth of stripping and/or discing should be determined in the field by a representative of Kleinfelder prior to earthwork. Upon approval of the owner and/or landscape architect, stripped topsoil (less any debris) may be stockpiled and placed in landscape areas. This material, however, should not be incorporated into any engineered fill. 20210067.001A/ST020R111447 Page 10 of 37 May 11, 2020 ©2020 Kleinfelder www.kleinfelder.com