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Construction Products Division <br /> GRACE W.R.Grace 8 Co.-Conn. <br /> 6960 KoII Center Parkway <br /> Suite 307 <br /> Pleasanton,CA 94566 <br /> (510)462-9620 <br /> August 18, 1997 <br /> CSR WEST <br /> P.O. Box 2037 <br /> Everett, WA 98203 <br /> Gentlemen: <br /> This is to certify that DARACEM-19, a high-range water reducing admixture, as manufactured <br /> and supplied by the Construction Products Division, W. R. Grace & Co.-Conn., is formulated to <br /> comply with Specification for Chemical Admixtures for Concrete, ASTM Designation: C 494, <br /> Types A & F (AASHTO M 194, Types A & F). <br /> DARACEM-19 does not contain calcium chloride or chloride containing compounds as a <br /> functional ingredient. Chloride ions may be present in trace amounts contributed from the <br /> domestic water supply used during the manufacturing process. <br /> The foregoing is in addition to and not in substitution for our standard Conditions of Sale printed <br /> on the reverse side hereof. <br /> Michael Gardner <br /> Technical Service Manager <br /> Authorized Signature <br /> STATE OF CALIFORNIA <br /> COUNTY OF ALAMEDA <br /> Subscribed and sworn to, before nze,August 18, 1997. <br /> • <br /> NOTARY PUBLIC a „ _ « a a a _ <br /> KARIN D. WALTERS <br /> '; COMMISSION 1124524 w <br /> ¢ :! tJ;j. NOTARY PUBLIC•CALIFORNIA <br /> a Ts:4VAr ALAMEDA COUNTY <br /> Commission Expires Jan.26,2001 <br />