2719 W Huckleberry Rd - Plan - Laserfiche WebLink

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2717 Huckleberry Rd, Unit #2 Santa Ana, CA 92706 In general, a conventional shallow foundation can be used for support of the proposed structure. The following recommendations are considered minimum and may be superseded by more restrictive requirements of the architect, civil/structural engineer, building codes, or governing agencies. Geotechnical Impact on Neighboring Properties The proposed development will not adversely impact the neighboring properties from the geotechnical perspective, provided the recommendations outlined in this report are property implemented. Site Preparation/Grading To create relatively uniform subgrade area for the proposed new structure, the upper 3 ft thick near ground surface earth materials should be over-excavated and recompacted. The over-excavation and re-compaction should be extended laterally beyond the outside perimeter of the new structure a minimum distance equal to depth of removal (2.5 ft. in this case). Over excavation and re-compaction for proposed new exterior concrete slabs, if any, should be minimum 1 ft. deep. No deeper remedial removal is anticipated; however, if deeper loose/soft soils are encountered, such as due to removal tree roots or other underground objects such as existing footings, pipes, etc., deeper remedial removal and re-compaction will be required. This will be determined in the field by the project geotechnical engineer, based on the actual conditions to be exposed at the time of site grading. The clean on-site earth materials without vegetation and roots can be reused as fill/backfill materials. Fill and backfill materials should be free of organic matter and oversized materials, 6 inches or greater in diameter, placed in near-horizontal loose lifts not to exceed six inches in thickness, and moisture conditioned to slightly over optimum moisture content prior to compaction. Imported soils, if any, should also be free of organic matter and oversized rocks, 4 inches or greater in diameter, and should have a very low expansion potential. Imported soils should be observed / tested and accepted by the geotechnical consultant prior to using at the site. In general, grading at the site should be performed in accordance with the requirements of the City of Huntington Beach and under the geotechnical observation and testing of the project geotechnical consultant. The compaction criterion for fill and backfill materials is a minimum of 90% of the maximum density determined in accordance with ASTM Test Method D1557. Temporary Excavations Page 6 of 22