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COMMERCIAL TESTING & ENGINEERING CO. <br /> GENERAL OFFICES: 226 NORTH LA SALLE STREET, CHICAGO. ILLINOIS 60601 AREA COOE 312 726-6431 <br /> 5+ 4 w. <br /> Reply to <br /> Instrumental Analysis Division Phone: 303-278.9521 <br /> 490 Orchard Street <br /> Golden,CO 80401 <br /> July 24, 1980 <br /> Mr. Jack Gillespie <br /> C F & I Steel Corp. D <br /> P.O. Box 316 <br /> Pueblo, CO 81002 <br /> J <br /> Re: IAD #97-E733-032-10 ��/ <br /> Release #R26675 <br /> Purchase Order 026144 N/NC �EpAR <br /> ANALYTICAL REPORT rMfNt <br /> Ten water samples were received for analyses on July 7, 1980. These samples <br /> were given our identification IAD 7#97-E733-032-10. <br /> The samples were analyzed for total iron, manganese, zinc, magnesium, and <br /> calcium by flame atomic absorption for sodium and potassium by flame emission <br /> and for selenium by hydride generation atomic absorption. <br /> Boron was determined colorimetrically, sulfate turbidimetrically, chloride and <br /> fluoride by specific ion electrode, and dissolved solids (TDS) , suspended <br /> solids (TSS) and oil and grease (0 & G) were determined gravimetrically by <br /> the procedures of Standard Methods , 14th edition, pH, carbonate, bicarbonate, <br /> alkalinity and specific conductance were all done by Standard Metood's <br /> procedures, Hardness, sodium absorption ratio, and ion balance were calculated. <br /> Note: Ion Balance calculations are made using dissolved alkali metal <br /> numbers (Mg, Ca, Na, and K) and neglecting the use of total heavy <br /> metals (Fe, Mn, and Zinc) since they may be assumed to be negligible <br /> in the dissolved sample. If the ion balance ratio is high it may <br /> be due to small amounts of dissolved heavy metals in the sample, not <br /> accounted for. Furthermore, in samples of high pH, alkalinity, relation- <br /> ship calculations may include amounts of hydrexide ion that, althouoh <br /> not called for in the analysis, needs to be considered when balancing <br /> ions. <br /> Hardness calculations are based on the amounts of dissolved calcium <br /> and magnesium in the samples. Again, if hardness numbers are low, <br /> it would be due to small amounts of dissolved heavy metals in the <br /> samples that are not accounted for. Hardness calculations should not <br /> be made including total metals since a digestion puts into solution <br /> additional amounts of suspended solids. <br /> va 'S <br /> The results of these analyses are presented in the following tables and are <br /> reported in mg/l unless otherwise noted. <br />