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www.mergylab.com <br />Aedralal Ercailesar 2100 i <br />Client: Cotter Corporation <br />Project: Schwartz-GW 03/31 /11 S25673 <br />pl' la`I(t'377 472-0111 • Billings, Mr 800-735-4489 a Casper, WY 81 <br />6 7175 - Rapid City, SD 8BB-672-1225 • College Station, TX If <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Analyte Count Result Units <br />Method: E900.0 <br />Sample ID: MB-GrAB-1069 6 Method Blank <br />Gross Alpha -0.77 pCi/L <br />Gross Alpha precision (±) 0.63 pCi/L <br />Gross Alpha MDC 0.75 pCi/L <br />Gross Beta 0.42 pCi/L <br />Gross Beta precision (±) 1.4 pCi/L <br />Gross Beta MDC 1.4 pCi/L <br />Sample ID: Th230-GrAB-1069 Laboratory Control Sample <br />Gross Alpha 100 pCi/L <br />Sample ID: Cs137-GrAB-1069 Laboratory Control Sample <br />Gross Beta 87 pCi/L <br />Sample ID: C11030297-001DDUP 6 Sample Duplicate <br />Gross Alpha 223 pCi/L <br />Gross Alpha precision (±) 8.61 pCi/L <br />Gross Alpha MDC 3.55 pCi/L <br />Gross Beta 69.9 pCi/L <br />Gross Beta precision (±) 3.18 pCi/L <br />Gross Beta MDC 3.55 pCi/L <br />Sample ID: C1 1040103-001 DMS Sample Matrix Spike <br />Gross Alpha 120 pCi/L <br />Sample ID: C11040103-001 DMSD Sample Matrix Spike Duplicate <br />Gross Alpha 120 pCi/L <br />Sample ID: C11040103-001 DMS Sample Matrix Spike <br />Gross Beta 86 pCi/L <br />Sample ID: C11040103-001 DMSD Sample Matrix Spike Duplicate <br />Gross Beta 88 pCi/L <br />Report Date: 04/25/11 <br />Work Order: C11040039 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: GrAB-1069 <br />Run: G542M_110407A 04/10/11 03:35 <br />U <br />U <br />Run: G542M_110407A 04/10/11 03:35 <br />99 80 120 <br />Run: G542M_110407A 04/10/11 03:35 <br />98 80 120 <br />Run: G542M_110407A 04/10/11 03:35 <br />6.5 17.6 <br />3.5 19 <br /> Run: G542M_110407A 04/12/11 01:21 <br />111 70 130 <br /> Run: G542M_110407A 04/12/11 01:21 <br />110 70 130 1.1 17.2 <br /> Run: G542M_110407A 04/12/11 01:21 <br />94 70 130 <br /> Run: G542M_110407A 04/12/11 01:21 <br />96 70 130 1.9 16 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration <br />Page 14 of 19