PC-2026-15 - Laserfiche WebLink

330 Land Company, LLC Arroyo Lago 9785.004.001 Design-Level Geotechnical Report Page | 14 April 16, 2024 Latest Revision October 31, 2025 The recommendations provided are for general reference. If it is desired to investigate this further, we recommend a corrosion consultant be retained to evaluate whether specific corrosion recommendations are advised for the project. 4.0 CONSTRUCTION MONITORING Our experience and that of our profession clearly indicate that the risk of costly design, construction, and maintenance problems can be significantly lowered by retaining the design geotechnical engineering firm to: 1. Review the final grading and foundation plans and specifications prior to construction to evaluate whether our recommendations have been implemented, and to provide additional or modified recommendations, as needed. This also allows us to check if any changes have occurred in the nature, design, or location of the proposed improvements and provides the opportunity to prepare a written response with updated recommendations. 2. Perform construction monitoring to check the validity of the assumptions we made to prepare this report. Earthwork operations should be performed under the observation of our representative to check that the site is properly prepared, the selected fill materials are satisfactory, and that placement and compaction of the fill has been performed in accordance with our recommendations and the project specifications. Sufficient notification to us prior to earthwork is important. If we are not retained to perform the services described above, then we are not responsible for any party’s interpretation of our report (and subsequent addenda, letters, and verbal discussions). 5.0 EARTHWORK RECOMMENDATIONS As used in this report, relative compaction refers to the in-place dry unit weight of material expressed as a percentage of the maximum dry unit weight of the same material, as determined by the ASTM D1557 laboratory compaction test procedure, latest edition. Compacted material is not acceptable if it is unstable; it should exhibit only minimal flexing or pumping, as observed by a representative of our firm. The term “moisture condition” refers to adjusting the moisture content of the material by either drying if too wet or adding water if too dry. We define “structural areas” as any area sensitive to settlement of compacted material. These areas include, but are not limited to, building pads, sidewalks, pavement areas, and retaining walls. 5.1 GENERAL DEMOLITION AND SITE CLEARING Areas containing surface vegetation or organic-laden topsoil within the areas to be improved should be stripped to an appropriate depth to remove these materials. The amount of actual stripping should be determined in the field by our authorized representa tive at the time of construction. Subject to approval by the landscape architect, stripping’s and organically contaminated soil can be used in landscape areas. Otherwise, such soil should be removed from the project site. Any topsoil that will be retained for future use in landscape areas should be stockpiled in areas where it will not interfere with grading operations.