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Page 10 <br /> <br />to be used for this project. However, if underground/buried ferrous metals or copper are <br />planned to be used at the site, they should be properly protected. A corrosion specialist <br />can be consulted. Testing can be performed for verification of the potential corrosion of <br />the soils at the site to ferrous metals and copper, if needed. The test can be performed <br />during and/or after completion of grading. <br /> <br />Geotechnical Review of Grading and Foundation Plans <br /> <br />Based on the City’s requirements, the project geotechnical consultant should review, <br />“approve” and sign the project grading and foundation plans with details/specifications, if <br />any, indicating conformation to applicable geotechnical recommendations. <br /> <br />We will corporate with the civil/structural design engineers who prepare the plans to <br />ensure our geotechnical recommendations are properly incorporated into the plans. <br /> <br />Geotechnical Observation and Testing During Construction <br /> <br />We recommend that a qualified geotechnical consultant be retained to provide <br />geotechnical engineering services, including geotechnical observation/testing, during the <br />construction phase of the project. This is to verify the compliance with the design, <br />specifications and/or recommendations, and to allow design changes in the event that <br />subsurface conditions differ from those anticipated. <br /> <br />Geotechnical observation/testing can be performed at the following stages: <br /> <br /> During ANY grading operations, including excavation, removal, filling and <br />backfilling, etc. <br /> During and after excavation for footings to verify the adequacy of underlying <br />materials. <br /> After pre-saturation of slab subgrade earth materials, if any, prior to pouring <br />concrete. <br /> After compaction of subgrade soils and/or aggregate base for exterior slabs and or <br />driveway, if any. <br /> During backfill of drainage and utility line trenches, if any, to verify proper <br />compaction. <br /> When/If any unusual geotechnical conditions are encountered. <br /> <br />Note: If Geotechnical International is not provided the opportunity to perform the <br />geotechnical observation/testing during the construction phase, Geotechnical <br />International will take no responsibility for the conclusions and recommendations <br />contained in our report in the event that subsurface conditions differ from those <br />interpreted and anticipated during our preliminary investigation phase prior to the start of <br />construction. <br /> <br />FLOOD ZONE - 4810 W Sixth <br />St Unit# 25/5/2025