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• www.enu6ab.com Helena, MT 877- 472 -0711 • Billings, MT 600 - 735-4489 • Casper, WY 888- 235 -0515 <br />n <br />An "M e. smce IM Gillette, WY 866- 686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/30/14 <br />Project: Schwartz -SW 9/4/14 S27661 Work Order: C14090226 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA -05 Batch: RA228 -4759 <br />Lab ID: LCS- 228 -RA226 -7358 Laboratory Control Sample Run: TENNELEC- 3_140909D 09/18/14 13:41 <br />Radium 228 7.2 pCi /L 96 80 120 <br />Lab ID: MB -RA226 -7358 <br />Radium 228 <br />Radium 228 precision ( ±) <br />Radium 228 MDC <br />Lab ID: C14090226- 001FMS <br />Radium 228 <br />3 Method Blank <br />0.7 pCi /L <br />0.8 pCi /L <br />1 pCi /L <br />Sample Matrix Spike <br />14 pCi /L <br />Lab ID: C14090226- 001FMSD Sample Matrix Spike Duplicate <br />Radium 228 13 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: TENNELEC- 3_140909D <br />Run: TENNELEC- 3_140909D <br />95 70 130 <br />Run: TENNELEC- 3_140909D <br />91 70 130 4.2 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />09/18/14 13:41 <br />U <br />09/18/14 13:41 <br />09/18/14 13:41 <br />41.2 <br />Page 23 of 26 <br />