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OTTO ROSENAU & ASSOCIATES, INC. <br /> Geotechnical Engineering, Construction Inspection & Materials Testing <br /> CONCRETE REPORT <br /> Job Number: 22-0835b Report Number: RC452781 Permit Number: B2208-109 <br /> Project: Middle Earth Holdings Foundation-Phase 2 Client: Helion Energy, Inc. <br /> Address: 1313 75th St SW, Everett Date: 02/22/2023 <br /> Inspector(s): John Fraser <br /> COMPRESSIVE TEST RESULTS Fracture Type <br /> Specimen Test Field Age Size Daily Average Weight Max Load Strength (other <br /> Number Date Cure (Days) (in.) Area (Sq.In.) Diam. (In.) (Lbs.) (Lbs.) (psi) than cone) <br /> 1 02/24/2023 2 4 x 8 12.57 4.00 8.5 14,700 1170 3 <br /> 2 02/27/2023 5 4 x 8 12.57 4.00 8.3 41,320 3290 5 <br /> 3 03/01/2023 7 4 x 8 12.57 4.00 8.4 40,650 3230 5 <br /> 4 03/09/2023 15 4 x 8 12.62 4.01 8.7 62,630 4960 5 <br /> 8 03/01/2023 7 4 x 8 12.57 4.00 8.4 45,740 3640 5 <br /> 12 03/01/2023 7 4 x 8 12.57 4.00 8.6 35,890 2860 5 <br /> 16 03/01/2023 7 4 x 8 12.57 4.00 8.4 33,500 2670 5 <br /> 20 03/01/2023 7 4 x 8 12.57 4.00 8.3 30,060 2390 5 <br /> 24 03/01/2023 7 4 x 8 12.57 4.00 8.3 45,230 3600 5 <br /> 28 03/01/2023 7 4 x 8 12.57 4.00 8.3 40,970 3260 3 <br /> =Discarded <br /> Tested in general accordance to: ASTMC39❑4 ASTMC617❑ ASTMC1231 ❑ <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-62c-04 (Rev 09/06) Page 2 of 2 <br />