15.05.090 Geologic Report.
(1) A geologic report shall include maps and a report containing not less than the following information:
(a) The maps shall include:
(i) The site location and regional setting of the subject property. The 1992 map series entitled: “Utah County Natural Hazards Overlay Zone,” prepared by Robert Robison, shall be used to reference the areas where specific hazard studies may need to be conducted.
(ii) A site-specific geologic map which illustrates exposure to geological and natural hazards identified in Section 15.05.020(11), Provo City Code, and the geotechnical limitations identified in Section 15.05.020(12), Provo City Code. The map shall illustrate the proposed site modifications relative to geological and natural hazards and/or geotechnical limitations that may impact the site. Any corrective site modification actions necessary to mitigate or avoid hazards or limitations shall be clearly identified on the map.
(iii) Maps shall use a scale of one (1) inch equaling one hundred (100) feet, with contour lines at five (5) foot intervals. Existing contours shall be shown by dashed lines and proposed contours shall be shown as solid lines. Boring logs, cross-sections, test trench logs, soil sample descriptions, and test results shall be included.
(iv) The City Engineer may require additional maps or additional detail on existing maps as reasonably necessary to evaluate actual or potential geologic hazards.
(b) The report shall be prepared in accordance with the guidelines established in the 1987 Utah Geological and Mineral Survey Circular 79, authored by G.E. Christensen, entitled: “Suggested Approaches to Geological Hazard Ordinances in Utah.” The report shall include:
(i) A description of the proposed grading, cutting, filling, excavation, or structure;
(ii) An analysis of the effects of the proposed grading, cutting, filling, excavation, or erection of a structure in relation to the geologic conditions shown in the geologic maps;
(iii) With regard to a structure, an analysis of the manner in which the same, as constructed, will be made reasonably safe for human habitation;
(iv) Any corrective or remedial action necessary to avoid a violation of Section 15.05.020, Provo City Code, shall be described and analyzed in detail;
(v) A list, including title, author and date, of all prior studies or reports which are relied upon to make this report; and
(vi) The City Engineer may require additional information or analysis which are reasonably necessary to evaluate actual or potential geologic hazards. This includes submittal of geologic reports to the State Geologist for review and comment.
(2) If the geologic report (maps and report) relates to land having a slope that exceeds ten percent (10%), the development proposal described in the geologic report shall conform to the provisions of Section 15.05.160, Provo City Code.
(3) In the case of a proposal to grade, fill, or excavate, which is not directly or indirectly related to a proposal to erect a structure for human habitation, the City Engineer may waive compliance with any requirement of this Section not relevant to the proposed grading, filling, or excavating.