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ENERGY <br />1. AAORATORIES <br />Report <br />Definitions: <br />www.energylab:wm <br />M dydral Erciesars Skin 1952 I <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 05/19/11 <br />Project: Schwartz GW 4/20/11 S25759- S25760 Collection Date: 04/20/11 10:15 <br />Lab ID: C11040679 - 002 DateReceived: 04/21/11 <br />Client Sample ID: MW - (S25759) Matrix: Aqueous <br />MCL/ <br />Analyses Result Units Qualifier RL QCL Method <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 381 pCi /L E900.0 05/04/11 00:02 / ep <br />Gross Alpha precision ( ±) 8.7 pCi /L E900.0 05/04/11 00:02 / ep <br />Gross Alpha MDC 2.5 pCi /L E900.0 05/04/11 00:02 / ep <br />Gross Beta 103 pCi /L E900.0 05/04/11 00:02 / ep <br />Gross Beta precision ( ±) 2.8 pCi /L E900.0 05/04/11 00:02 / ep <br />Gross Beta MDC 2.5 pCi /L E900.0 05/04/11 00:02 / ep <br />DATA QUALITY <br />NC Balance (± 5) 1.66 % Calculation 05/11/11 15:49 / kbh <br />Anions 4.75 meq /L Calculation 05/11/11 15:49 / kbh <br />Cations 4.91 meq /L Calculation 05/11/11 15:49 / kbh <br />Solids, Total Dissolved Calculated 287 mg /L Calculation 05/11/11 15:49 / kbh <br />TDS Balance (0.80 - 1.20) 1.05 Calculation 05/11/11 15:49 / kbh <br />FIELD PARAMETERS <br />pH 7.20 s.u. FIELD 04/20/11 10:15 / * ** <br />Temperature 6.7 °C FIELD 04/20/11 10:15 / * ** <br />Depth to Water 11.74 feet FIELD 04/20/11 10:15 / * ** <br />Field Conductivity 469 umhos /cm FIELD 04/20/11 10:15 /*** <br />Flow 0.72 gpm FIELD 04/20/11 10:15 /*** <br />*" Performed by Sampler <br />RL - Analyte reporting limit. <br />QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />Helena, MT 877- 472 -0711 • Billings, Mr 800 - 735 -4488 • Casper; WY 888 - 235 -0515 <br />Gillette, WY 866- 686 -7175 • Rapid City, SO188 -672 -1225 • College Station, TX 888 -690 -2218 <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />Analysis Date / By <br />Page 6 of 23 <br />