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February 28,2023 G-5835 <br /> 3821 —Shore Ave Everett,WA Page 3 <br /> SUBSURFACE INVESTIGATION <br /> On January 31S`2023, a geologist from our firm, visited the site to investigate the subsurface soil <br /> conditions at the site. We drilled two exploratory soil borings (HA-1 and HA-2)using hand <br /> operated boring equipment. The approximate locations of the borings are illustrated ori the <br /> attached Plate 2—Site Plan. We collected samples of the soils encountered during advancement <br /> of the borings for further analysis at our office. <br /> Soils encountered in boring HA-1 consisted of loose brown silty sand to a depth of <br /> approximately 1 A feet below ground surface(bgs) underlain by loose to medium dense light <br /> brown gravelly sand with silt to a depth of approximately 2.0 feet bgs. Medium dense to dense <br /> dark brown gravelly sand with silt was encountered at depths below approximately 2.0 feet bgs. <br /> The advancement of boring HA-1 was terminated at a depth of approximately 2.5 feet bgs. <br /> Soils encountered in boring HA-2 consisted of loose to medium dense dark brown poorly graded <br /> sand with silt and gravel to a depth of approximately 1.5 feet bgs underlain by loose to medium <br /> dense brown poorly graded sand with gravel to a depth of approximately 2.8 feet bgs. Loose dark <br /> brown poorly graded sand with gravel was encountered from approximately 2.8 feet bgs to 4.0 <br /> feet bgs in boring HA-2. Loose tight brown silty sand was encountered at depths below <br /> approximately 4.0 feet bgs in boring HA-2. The advancement of boring HA-2 was terminated at <br /> a depth of approximately 5.0 feet bgs. <br /> For a more detailed description of the soils encountered during our subsurface investigation, <br /> please refer to the soil log on the attached 4ppendix A— USCS Soil Classification &Soil Boring <br /> Log. <br /> The dense gravelly sands encountered below approximately 2.0 feet bgs in boring HA-1 are <br /> interpreted to be the relatively undisturbed upper member of the Whidbey formation,overlain by <br /> a loose,relatively weathered horizon. We interpret the loose to medium dense soils encountered <br /> above approximately 4.0 feet bgs in boring HA-2 to be fill soils,possibly deposited during <br /> previous construction or grading activities at the project site,underlain by a relatively weathered <br /> horizon of transitional bed deposits, consistent with the mapped geology for the project site. <br /> GEO Group Northwest, Inc. <br />