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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: RC452780 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 /> Description/Location: Concrete delivered for testing purposes, the samples listed below are prior to the addition of Boron Carbide <br /> power. Miixer subsequently had Boron Carbide powder added prior to placement in project foundation slab. <br /> Rebar Verified: N/A Mfg: <br /> Placement Data Design 0 Actual ❑ Batch Weights/Cubic Yard <br /> Supplier: Cadman Cement(lbs/type): 465# Type: PLC <br /> Mix Number: PPECC51K Fine Agg. (lbs): 1482# <br /> Slump Spec: 29"±3" Coarse Agg. (lbs/size): 1388##8 Slag (lbs): <br /> W/C Ratio Spec: .381 Coarse Agg. (lbs/size): <br /> Air Spec: N/A Coarse Agg. (lbs/size): <br /> Total Yards: 9 Fly Ash (lbs): 310# <br /> Placed Via: Tailgate Water(Ibs or gal): 35 gal. <br /> Consolidated: No Admixtures(specify): 45 oz. GLENIUM 7500, 16 oz.VMA 358 <br /> Required Strength: 5000 psi @ 28 days <br /> Sampling and Testing Data Time Cubic Water Slump Air% Conc.Temp Ambient Truck Ticket <br /> ASTM C 172, C 31 Made Yards Added C 143 C 231 C 1064 Temp No. No. <br /> Cast Samples: 1-7 4:15 am 9.00 10 gal. 32" N/A 60°F 33°F 507 1361168 <br /> Cast Samples: 8-11 5:00 am 80.00 5 gal. 29" N/A 59°F 33°F 347 1361174 <br /> Cast Samples: 12-15 7:00 am 150.00 5 gal. 28.25" N/A 58°F 34°F 506 1361185 <br /> Cast Samples: 16-19 9:00 am 225.00 0 gal. 27.5" N/A 58°F 33°F 366 1361215 <br /> Cast Samples: 20-23 11:00 am 300.00 0 gal. 27.25" N/A 59°F 35°F 507 1361275 <br /> Cast Samples: 24-27 11:45 am 400.00 0 gal. 28.75" N/A 55°F 35°F 366 1361298 <br /> Cast Samples: 28-31 1:00 pm 480.00 0 gal. 27.5" N/A 57°F 36°F 430 1361314 <br /> Weather: Inside Slump Range: N/A Air% Range: N/A <br /> Date Samples Picked Up: 2/23/2023 Initial Curing Method: ASTM C31,Exclude C31-12.1.5 Initial Curing Tmp: ASTM C31,Exclude C31-10.12 <br /> Comments <br /> Per EOR direction Glenium added on site: 1 st mixer tested 1 gallon; 2nd &3rd mixer tested 1/2 gallon; Remaining mixers tested 0 added. <br /> REINFORCING/PLACEMENT: Conforms: -/1 Does Not Conform: <br /> See attached for additional test results <br /> Copies to: Date: 2023.03.09 <br /> ❑ Client ❑d Engineer ❑d Others Sjct" <br /> OW❑d Owner ❑�/ Contractor Technical Responsibility: 3'24'29 -Og�00� <br /> ❑ Architect Building Dept Isaac Ruoff, Project Manager <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 1 of 2 <br />