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Bayley Construction | March 12, 2025 Page 4 <br />File No. 0661-144-00 <br />5.Evaluate physical and engineering characteristics of the soils based on laboratory tests performed on <br />samples obtained from the borings. The laboratory tests may include percent fines content <br />determination, sieve analysis, Atterberg limits, compressibility, and moisture content tests, as <br />appropriate. <br />6.Provide geotechnical recommendations including the following, as appropriate: <br />Recommended type(s) of foundation systems; <br />An estimate of total and differential foundation settlements for the recommended foundation <br />types; <br />Subsurface drainage system to be used for slabs-on-grade and below-grade walls; <br />Suitability of on-site materials or requirement for off-site materials for compacted fills under <br />building slabs, along with a recommended specification for compacted fill material; <br />Compaction criteria; <br />Subgrade preparation and modulus of subgrade reaction to be used for slabs-on-grade; <br />Determination as to whether a capillary break or moisture/vapor barrier are required; <br />Soil pressures to be used for the design of cantilever and basement-type retaining walls, along with <br />recommended surcharge loading and seismic pressures; and <br />Determination as to whether soil design parameters can be increased for short-term loadings. <br />7.Temporary shoring recommendations, including the following, as appropriate: <br />Means, methods and types of temporary shoring; <br />Recommended tieback load transfer values, geometry of no-load zone and minimum anchor <br />lengths; <br />Lateral earth pressures and diagrams for temporary shoring system; <br />Required pile minimum embedment lengths, end-bearing value and side friction value; <br />Lagging design, as appropriate; <br />Surcharge pressures; <br />Shoring monitoring requirements; and <br />Proof and verification anchor testing requirements. <br />8.Provide recommendations regarding groundwater conditions, including estimated groundwater <br />elevation and construction considerations. <br />9.Prepare a draft geotechnical engineering report summarizing the subsurface explorations, including <br />descriptions of surface and subsurface conditions, a site plan showing exploration locations and other <br />pertinent features, summary exploration logs, and design recommendations – to be used for <br />construction permit submittal. <br />TASK 301. SUPPLEMENTAL INVESTIGATION <br />1.Coordinate site access for the remaining two borings on private property. We will contact the <br />Washington State One-Call service to locate the borings in areas that are clear of underground utilities. <br />We will also subcontract a private utility locator to clear utilities near the proposed boring locations. <br />Design-Build Contract for Everett Outdoor Events Center <br />Exhibit C - Phase 1A Work and Fee Proposal