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OTTO ROSENAU & ASSOCIATES, INC. <br /> Geotechnical Engineering, Construction Inspection & Materials Testing <br /> GEOTECHNICAL INSPECTION REPORT <br /> Report Number: GE0460434 <br /> Project Name: Boeing - Bldg. 40-27 Side of Body Access Stands Job Number: 23-0861 <br /> Project Address: Building 40-27, Everett Permit: B2309-055 <br /> Client Name: The Boeing Company <br /> Inspection Desc.: Subgrade rework <br /> Inspector <br /> and Date Remarks <br /> Mark Gray Inspected the following: <br /> December 26, 2023 <br /> • Slab subgrade, interior, tunnel level, approx. grids T.6—T.7/6.57-6.9 per layout on sheet <br /> 1 S10-27 of plans, dated 03/02/2023, supplied by the contractor; excavation was approx. 5 <br /> feet below finish floor; area approx. 30X15 along the referenced grid. <br /> • Consult with contractor regarding upcoming schedule including rework and concrete. <br /> Description <br /> The exposed material consisted of native gravelly sandy silt, pit run, and CDF (reference <br /> ORA Geotechnical Inspection Report#460432, dated 12/23/2023 <br /> Summary <br /> Contractor stated unforeseen events have occurred, which have shifted the schedule for <br /> the work including, but not limited to, epoxy, resteel, concrete, and subgrade inspection. <br /> Rework of the exposed subgrade is in progress, including application of mechanical <br /> consolidation using a vibratory plate—in progress. <br /> Copies to: Anthony Coyne, P.E. Date:2024.01.02 13:21:14 <br /> ❑d Client ❑ Engineer ❑ Technical Responsibility: <br /> Others -08 00 <br /> ❑.I Owner 0 Contractor <br /> ❑ 0 Anthony Coyne,Senior Engineer <br /> Architect Building Dept <br /> This report applies only to the items tested or reported and is the exclusive property of Otto Rosenau&Associates, Inc. Reproduction of this <br /> report except in full,without written permission from our firm is strictly prohibited. <br /> 6747 M.L.King Way S.,Seattle,Washington 98118- Phone(206)725-4600- Fax(206)723-2221 <br /> Form No.:ADMIN-100-01 (Rev 01105) Page 1 of 1 <br />