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BASF <br /> We create chemistry <br /> January 02, 2019 <br /> Miles Sand &Gravel Company <br /> 663 Pease Road <br /> Burlington,Washington 98233 <br /> Attention: Michael Craig <br /> Project: Ready-Mix Concrete Projects <br /> Project location: Washington State <br /> Certificate of Conformance <br /> MasterSure®Z 60 Admixture (formerly RheoTEC Z-60) <br /> BASF Corporation Admixture for Concrete <br /> I, Richard Hubbard, Sr.Technical Marketing Specialist for BASF Corporation, Cleveland, Ohio, <br /> certify: <br /> That MasterSure Z 60 admixture is a Workability-Retaining Admixture manufactured by BASF <br /> Corporation; and <br /> That MasterSure Z 60 admixture and RheoTEC Z-60 admixture are the same product having <br /> identical composition, differing only in designation; and <br /> That no calcium chloride or chloride based ingredient is used in the manufacture of MasterSure <br /> Z 60 admixture; and <br /> That MasterSure Z 60 admixture, based on the chlorides originating from all the ingredients used <br /> in its manufacture, contributes less than 0.00007 percent(0.7 ppm)chloride ions by weight of <br /> the cement when used at the rate of 65 mL per 100kg (1 fluid ounce per 100 pounds) of cement; <br /> and <br /> That MasterSure Z 60 admixture meets the requirements for a Type S, Specific Performance, <br /> Admixture as specified in Table 1 of ASTM C494/C494M and AASHTO M194, the Standard <br /> Specifications for Chemical Admixtures for Concrete. <br /> scRa, <br /> tv.p17"36"61:---"' <br /> Richard Hubbard <br /> Sr.Technical Marketing Specialist <br /> BASF Corporation <br /> Admixtures Systems MASTER® <br /> 23700 Chagrin Boulevard >>BUILDERS <br /> Cleveland,,Ohio 44122 <br /> Telephone(216)839-7500 SOLUTIONS <br />