1033 TEMPLE DR 2023-10-31 - Laserfiche WebLink

December i4,2020 Page 4 of 6 Limited Geologic Evaluation 2. The setback buffer requirement shall be based upon information contained in a geological assessment, and shall be measured on a horizontal plane from a vertical line established at the edge of the geologically hazardous area limits (both from the top and toe of slope). In the event that a specific setback buffer is not included in the recommendation of the geological assessment, the setback buffer shall be based upon the standards contained in Chapter 19.18 of the International Building Code(IBC),or as the IBC is updated and amended. a. If the geological assessment recommends setback buffers that are less than the standard buffers that would result from application of Chapter 19.18 of the IBC, the specific rationale and basis for the reduced buffers shall be clearly articulated in the geological assessment. b. The city may require larger setback buffer widths under any of the following circumstances: (1) The land is susceptible to severe erosion and erosion control measures will not effectively prevent adverse impacts. (2) The area has a severe risk of slope failure or downslope stormwater drainage impacts. (3) The increased buffer is necessary to protect public health, safety and welfare based upon findings and recommendations of the geological assessment. 3. Unless otherwise permitted as part of an approved alteration,the setback buffers required by this subsection shall be maintained in native vegetation to provide additional soil stability and erosion control. If the buffer area has been cleared, it shall be replanted with native vegetation in conjunction with any proposed development activity. In general,no specific buffer or setback is required based on the type and location of the proposed landscaping work. We recommend that any loose fill soils (stockpile) be fully used as structural fill compacted behind new walls or removed as needed. All permanent cut slopes should have inclinations of 2.511:1V or less when completed. All areas should be surfaced with landscaping materials and plants or new patio areas where proposed. We recommend that any new surfaces placed near the top of slope systems be properly keyed into medium dense or firmer native soils. These areas should not bear on loose native or fill soils at the edge of a slope. Settlement could occur if this occurs. C. Permitted Alterations. Unless associated with another critical area, the planning director, using the review process described in EMC Title 15, Local Project Review Procedures, may allow alteration of an area identified as a geologically hazardous area or the setback buffers specified in the IBC if an approved geotechnical report demonstrates that: 1. The proposed development will not create a hazard to the subject property, surrounding properties or rights-of-way,or erosion or sedimentation to off-site properties or bodies of water; 2. The proposal addresses the existing geological constraints of the site,including an assessment of soils and hydrology; 3. The proposed method of construction will reduce erosion potential,landslide and seismic hazard potential,and will improve or not adversely affect the stability of slopes; 4. The proposal uses construction techniques which minimize disruption of existing topography and natural vegetation; 5. The proposal is consistent with the purposes and provisions of this chapter and mitigates any permitted impacts to critical areas in the vicinity of the proposal; www.cobaltgeo.com (2o6)331-1097