(1) If the city determines that geologic, hydrologic, or soil conditions may present special grading or drainage conditions that may damage a public right-of-way or pose a substantial threat to public health, safety, or welfare, the city may require the applicant to submit a geotechnical engineering report that includes a soils engineering report and/or an engineering geology report pursuant to subsections (2) and (3) of this section. If a geotechnical engineering report is required, the applicant’s geotechnical engineer or civil engineer shall inspect and approve the suitability of the prepared ground to receive fills and the stability of cut slopes with respect to soil, hydrologic, and geologic conditions. The geotechnical evaluation shall also address the need for subdrains or other groundwater drainage devices. To verify safety, the city may require testing for required compaction, soil bearing capacity, stability of all finished slopes and the adequacy of structural fills as a condition of approval.

(2) Soils Engineering Report. The city may require a soils engineering report, which shall include data regarding the nature, distribution, and strength of existing soils, conclusions and recommendations for grading procedures and design criteria for corrective measures, including structural fills, when necessary, and an opinion on adequacy for the intended use of sites to be developed by the proposed grading as affected by soils engineering factors, including the stability of slopes.

(3) Engineering Geology Report. The city may require an engineering geology report, which shall include an adequate description of the geology of the site, conclusions and recommendations regarding the effect of geologic conditions on the proposed development, and an opinion on the adequacy for the intended use of sites to be developed by the proposed grading, as affected by geologic factors.

(4) Liquefaction Report. The city may require a geotechnical investigation and report in accordance with IBC Sections 1802.2 and 1802.6, which address the potential for liquefaction. (Ord. 1499 § 10 (Exh. H), 2021).