7100 HARDESON RD SITE DEVELOPMENT Geotech Report 2025-03-04

• Geotechnical Engineering Report lierracon Merrill Creek Operations Base Expansion r: Everett, Washington December 14, 2020 R Terracon Project No. 81205012 GeoReport the weight of soil and floor slab, plus the dead weight of the foundation, divided by an appropriate factor of safety. A maximum total unit weight of 120 pcf may be used for the backfill. Greater uplift resistance may be achieved through deeper burial of footings, although we do not recommend a burial depth exceeding 4 feet below the existing surface grade. If greater uplift resistance is necessary (such as for seismic reactions) we recommend that micropiles or similar drilled/augered tension elements be installed for supplemental uplift capacity. Limits of Soil for Uplift Resistance awe (6: 4 6 LA k«st..s7«R..#..k..k..�ri Tea+parnr A+o+ iavdS Foundation Construction Considerations As noted in Earthwork, the footing excavations should be evaluated under the direction of the Geotechnical Engineer. The base of all foundation excavations should be free of water and loose soil prior to placing concrete. Concrete should be placed soon after excavating to reduce bearing soil disturbance. Care should be taken to prevent wetting or drying of the bearing materials during construction. Excessively wet or dry material or any loose/disturbed material in the bottom of the footing excavations should be removed/reconditioned before foundation concrete is placed. If unsuitable bearing soils are encountered at the base of the planned footing excavation, the excavation should be extended deeper to suitable soils and the excavated footprint expanded as shown below. The over-excavation should be backfilled up to the footing base elevation, with structural fill placed and compacted as recommended in the Earthwork section. Responsive ■ Resourceful E Reliable %: