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C©IV1lVi~I~IAI.., Tf ~.STII'~1G ~~ORATORIES <br />A DIVISIDPI 0>= CTL-THDMPSON <br />22 LiPAN STREET DENVER, COLORADO 80223 303 / 825-3207 <br />• C1'L/Thompson , Ltr.. Report (dent. No.: P_4931 <br />1701 South federal <br />Sui Ce D Report Date: biay 5, 1980 <br />Denver, Colorado 80219 June 2, 1980 <br />Attention: Bill Roffman <br />REPORT OF COMPRESSIVE STRENGTH TESTS. CONCRETE SPECIMENS <br />Project: Energy rue].s Coal D1ine, Ec1;ma.n Parlc, Pond A <br />location: Downstream of 3G" dia. RCP Base <br />Cast Date: 4-22-80 Time: 3:15 By C1'L <br />Concrete M ix: 6 sk. -Type I I , 3/4" agg. <br />Supplier: P.lountain Nobile TicketNo.: C-17129 <br />PHYSICAL PROPERTIES OF CONCRETE <br />Slump 2;; in. Air-Content °~ Unit Weight <br />COMPRESSIVE STRENGTHS <br />Specimen Age Diameter Strength <br />No. Days In. Psi <br />SET #2: <br />i 7 5.99 9260 <br />2 7 5.99 9260 <br />3 28 6.00 5980 <br />9 28 6.00 5880 <br />Cylinders Recieved: 9-29-80 <br />Batch Tine: 1:20 <br />Truck No.: 98 <br />pcf Conc. Temp. °F G5 <br />Remarks, <br />COMMERCIAL TESTING LABORATORIES <br />• ' 7 /~ <br />By r,~r~~':~ ~ ~~~'f~ r Specified Strength 3000 psi @ 28 days <br />Preston B. Praker, P.E. <br />