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North Oaks Company LLC <br />Project B2402335 <br />August 22, 2024 <br />Page 24 <br />D.2. Exploration Logs <br />D.2.a. Log of Boring Sheets <br />The Appendix includes Log of Boring sheets for our penetration test borings. The logs identify and <br />describe the penetrated geologic materials and present the results of penetration resistance and other <br />in -situ tests performed. The logs also present the results of laboratory tests performed on penetration <br />test samples and groundwater measurements. <br />We inferred strata boundaries from changes in the penetration test samples and the auger cuttings. <br />Because we did not perform continuous sampling, the strata boundary depths are only approximate. The <br />boundary depths likely vary away from the boring locations, and the boundaries themselves may occur as <br />gradual rather than abrupt transitions. <br />D.2.b. Geologic Origins <br />We assigned geologic origins to the materials shown on the logs and referenced within this report, based <br />on: (1) a review of the background information and reference documents cited above, (2) visual <br />classification of the various geologic material samples retrieved during the course of our subsurface <br />exploration, (3) penetration resistance in -situ testing performed for the project, (4) laboratory test <br />results, and (5) available common knowledge of the geologic processes and environments that have <br />impacted the site and surrounding area in the past. <br />D.3. Material Classification and Testing <br />D.3.a. Visual and Manual Classification <br />We visually and manually classified the geologic materials encountered based on ASTM D2488. When we <br />performed laboratory classification tests, we used the results to classify the geologic materials in <br />accordance with ASTM D2487. The Appendix includes a chart explaining the classification system we <br />used. <br />D.3.b. Laboratory Testing <br />The exploration logs in the Appendix note the results of the laboratory tests performed on geologic <br />material samples. We performed the tests in general accordance with ASTM procedures. <br />BRAUN <br />INTERTEC <br />