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wwwenergylab.c m <br />. ? AerryrlalE?re+EAraaSdvealA?t <br />Helena, MT 877-412-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-8515 <br />Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 12/01/10 <br />Project: Schwartzwaider Water Monitoring Program SW Work Order: C10100934 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E900.0 Batch: GrAB-1000 <br />Sample ID: MB-GrAB-1000 6 Method Blank Run: G542M_101111A 11/13/10 22:16 <br />Gross Alpha 8.4 pCi/L <br />Gross Alpha precision (±) 1.2 pCi/L <br />Gross Alpha MDC 0.76 pCi/L <br />Gross Beta 0.96 pCi/L U <br />Gross Beta precision (±) 1.4 pCi/L <br />Gross Beta MDC 1.4 pCi/L <br />- Alpha Blank is high. <br />Sample ID: Th230-GrAB-1000 Laboratory Con trol Sample Run: G542M_101111A 11/13/10 22:16 <br />Gross Alpha 100 pCi/L 91 70 130 <br />Sample ID: Cs137-GrAB-1000 Laboratory Control Sample Run: G542M_101111A 11/13/10 22:16 <br />Gross Beta 87 pCi/L 96 70 130 <br />Sample ID: 010100891-001EMS Sample Matrix Spike Run: G542M_101111A 11/16/10 00:04 <br />Gross Alpha 170 pCi/L 169 70 130 S <br />- Spike response is outside of the accepta nce range for this analysis. Since the LCS and the RPD for the MS MSD pair are acceptable, the response is considered to be <br />matrix related. The batch is approved. <br />Sample ID: C10100891-001EMSD Sample Matrix Spike Duplicate Run: G542M_101111A 11/16/10 00:04 <br />Gross Alpha 170 pCi/L 162 70 130 4.6 17.3 S <br />Sample ID: C10100891-001 EMS Sample Matrix Spike Run: G542M_101111A 11/16/10 00:04 <br />Gross Beta 91 pCi/L 98 70 130 <br />Sample ID: C10100891-001EMSD Sample Matrix Spike Duplicate Run: G542M_101111A 11/16/10 00:04 <br />Gross Beta 91 pCi/L 99 70 130 0.1 15.8 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 26 of 39