In addition to the provisions of Section 105.3, the applicant shall state the estimated quantities of excavation and fill.
In addition to the provisions of Section 107, a grading plan shall show the existing grade and finished grade in contour intervals of sufficient clarity to indicate the nature and extent of the work and show in detail that it complies with the requirements of this code. The plans shall show the existing grade on adjoining properties in sufficient detail to identify how grade changes will conform to the requirements of this code.
A geotechnical report prepared by a registered design professional shall be provided. The report shall contain at least the following:
- The nature and distribution of existing soils;
- Conclusions and recommendations for grading procedures;
- Soil design criteria for any structures or embankments required to accomplish the proposed grading; and
- Where necessary, slope stability studies, and recommendations and conclusions regarding site geology.
Exception: A geotechnical report is not required where the building code official determines that the nature of the work applied for is such that a report is not necessary.
For sites with mapped maximum considered earthquake spectral response accelerations at short periods (Ss) greater than 0.5g as determined by Section 1613, a study of the liquefaction potential of the site shall be provided, and the recommendations incorporated in the plans.
Exception: A liquefaction study is not required where the building official determines from established local data that the liquefaction potential is low.