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SOILS <br /> Per the Geotechnical Engineering Report by Terracon, dated May 15, 2020, existing fill was • <br /> observed at the exploration locations to depths of 6 to 15 feet below ground surface (bgs); loose to <br /> 111 <br /> medium dense sand silt to about 15 bgs; and very stiff to hard sand with silt below about 15 bgs. <br /> Each of the borings disclosed loose to medium dense fill to depths of up to 15 feet bgs. The fill <br /> deposits varied from sand to silt and had varying organics content.The depth of the fill deposits <br /> roughly corresponds to the approximate depth of the Dogwood Elm Creek culvert, a 24-inch culvert <br /> installed below the site, and the interpreted relic drainage basin that existed prior to filling and <br /> reclaiming of the currently developed areas. <br /> Groundwater was not observed in during the geotechnical investigation effort. However,Terracon's <br /> Draft Cleanup Action Plan dated March 18, 2020 reported two supplemental subsurface <br /> investigations (April 2019 and June 2019) at the project site as a part of a Remedial Investigation. <br /> The groundwater levels reported in the Draft Cleanup Action Plan were used in the geotechnical <br /> analysis. In general,the groundwater table ranges from approximately 5 to 10 feet bgs. See <br /> Appendix B for the Geotechnical Engineering Report and Draft Cleanup Action Plan. <br /> I <br /> I <br /> NAVIX Everett VA Clinic—Everett, WA 6 <br />