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Ms. Sara Harkins Mr. Joel Bolduc December 12, 2014 <br /> Golder Associates Holcim US Inc. <br /> ' 44 Union Road, Suite 300 1170 Transit Drive <br /> Lakewood CO 80228 Colorado Springs CO 80903 <br /> ' joel.bold ucCcDholcim.com invoice and copy <br /> sharkinsCcDgolder.com results <br /> ' REPORT OF ANALYSES <br /> 7 samples for tritium in water <br /> AT Sample Tritium TU Error TU <br /> 5182 MW-1 8.5 0.45 <br /> 5183 MW-2 1.2 0.30 <br /> ' 5184 MW-3 0.6 0.29 <br /> 5185 MW-4 1.7 0.32 <br /> 5186 MW-6 1.5 0.32 <br /> ' 5187 MW-7 1.2 0.32 <br /> 5188 MW-20 0.9 0.32 <br /> ' Explanation of tritium data: The detection limit, 0.6 TU, is calculated as 0 + 2a for low-counting <br /> samples, and applies for 9-fold enrichment and 1500 minutes of counting. Lower limits are <br /> possible for higher enrichment factors. <br /> ' A sample with a mean calculated TU value between 0 and 1 a , say 0.20 ±0.35 TU, is reported <br /> thus: <0.9 TU (= 0.2 + 2 x 0.35). A sample with a mean calculated TU value between 1 and <br /> ' 2Q , say 0.51 ±0.38, is reported thus: <1.3 (Apparent 0.5), where 1.3 = 0.51 + 2 x 0.38, rounded. <br /> Samples with calculated TU values greater than 2a are reported thus: 1.1 ±0.4 TU. <br /> C.J.Eastoe <br /> ' Staff Scientist <br />