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C074/11V11~F~CIAL TE:STII''~!G LA~C]~AAT®RIES <br />A DIVISION ^F CTL-THOMPSON <br />22 LIPAN STREET DENVER, COLORADO 80223 303 / B25-3207 <br />• ' C'fL/Thompson, Inc. Repori Ident. No.: P-4939 <br />1701 South Federal <br />Suite I) Report Date: Atay 5,' 1980 <br />Denver, Colorado 80219 htay 23, 1980 <br />Attention: Bill Hoffman <br />REPORT OF COMPRESSIVE STRENGTH TESTS. CONCRETE SPECIMENS <br />Project: Energy Fue]s Coal D1ine, Eckman Farlc, Pond A <br />Location: Upstream i 36" dia. RCP Base <br />Cast Date: 4-23-80 Time: 4:45 By CTL <br />Concrete Mix: Type II (i sk. , 3/4" agg. <br />Supplier: f,lof fat. Ready hlis Ticket No.: C-17147 <br />PHYSICAL PROPERTIES OF CONCRETE <br />Slump 4 in. Air-Content % Unit Weight <br />COMPRESSIVE STRENGTHS <br />Specimen Age Diameter Strength <br />No. Days In. Psi <br />S E'I' M 3 <br />1 7 6.00 2860 <br />2 7 6.00 2850 <br />3 28 6.00 4650 <br />4 20 5.99 4590 <br />Cyl.i.ndets Received: 4-29-80 <br />COMMERCIAL TESTING LABORATORIES <br />.~ ~ .~+ <br />By ~!` 3 • ______ _-- _S_. Specitied Strength <br />Freston B. Fraker, P.E. <br />Batch Time: 3:37 <br />Truck No.: 53 <br />pct Conc. Temp. °F 58 <br />Remarks, <br />:,000 psi @ 2S days <br />