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wwx.energyta4.com r Helena, MT 877-472-0711 • Billings, MT 800-735-4489 - Casper, WY 888-235-0515 <br />Anatyne:l Exceusoce Skee 1952 Gillette, WY 666-686.7175 • Rapid City, SO 888.671-1225 - College Station, T% 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Dale: 01121/11 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: C10120819 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua[ <br />Method: E900.0 <br />Sample ID: MB-GrAB-1025 6 Method Blank <br />Gross Alpha -0.8 pCi/L <br />Gross Alpha precision (t) 0.6 pCVL <br />Gross Alpha MDC 0.7 pCi/L <br />Gross Beta .1 pCi/L <br />Gross Bela precision (±) 1 pCi/L <br />Gross Bela MDC 1 pCi/L <br />Sample ID: Th230-GrAB-1025 Laboratory Con trol Sample <br />Gross Alpha 100 pCi/L <br />Sample ID: Cs137-GrAB-1025 Laboratory Con trol Sample <br />Gross Beta 81 pCi/L <br />Sample ID: C10120584-001HDUP 6 Sample Duplicate <br />Gross Alpha -0.632 pCi/L <br />Gross Alpha precision (±) 3.22 pCi/L <br />Gross Alpha MDC 5.52 pCi/L <br />Gross Beta 8.00 pCi/L <br />Gross Beta precision (±) 4.10 pCi/L <br />Gross Beta MDC 6.63 pCi/L <br />Sample ID: C10120819-001FMS Sample Matrix Spike <br />Gross Alpha 112 pCi/L <br />Sample ID: C10120819.OGlFMSD Sample Matrix Spike Duplicate <br />Gross Alpha 109 pCi/L <br />Sample ID: C10120819.001FMS Sample Matrix Spike <br />Gross Bela 90.3 pCi/L <br />Sample ID: 010120819-001FMSD Sample Matrix Spike Duplicate <br />Gross Beta 90.0 pCi/L <br />Qualifiers: <br />RL - Analyle reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: GrAB-1025 <br />Run: G542M_1 101 03A 01/04/11 22:52 <br />U <br />U <br />Run: G542M_ 110103A 01/04/11 22:52 <br />98 70 130 <br />Run: G542M 110103A 01/04/11 22:52 <br />92 70 130 <br />Run: G542M _110103A 01104/11 22:52 <br /> 77 1337.7 U <br />32 95.6 <br /> Run: G542M_l10103A 01/05/11 11:01 <br />98 70 130 <br /> Run: G542M 110103A 01105/11 11:01 <br />95 70 130 2.8 17.3 <br /> Run: G542M_ 110103A 01/05/11 11:01 <br />96 70 130 <br /> Run: G542M 110103A 01/05/11 11:01 <br />96 70 130 0.3 15.6 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 19 of 25