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www.energylatwom f Helena, MT 671-472-0711 • Billings, Mr 881-735-4469 • Casper, WY 888-235-8515 <br />Aesb*9?+ 119 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-660-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 07/02/10 <br />Project: Schwartzwalder Water Monitoring Program Collection Date: 06/10/10 11:20 <br />Lab ID: C10060510-012 DateReceived: 06/11/10 <br />Client Sample ID: SW-BOS Matrix: Aqueous <br />MCL/ <br />Analyses Result Units Qualifier RL QCL Method Analysis Date / By <br />DATA QUALITY <br />A/C Balance (± 5) -2.71 % Calculation 06/25/10 07:59 / kbh <br />Anions 2.23 meq/L Calculation 06/25/10 07:59 / kbh <br />Cations 2.11 meq/L Calculation 06/25/10 07:59 / kbh <br />Solids, Total Dissolved Calculated 138 mg/L Calculation 06/25/10 07:59 / kbh <br />TDS Balance (0.80 - 1.20) 1.01 Calculation 06/25/10 07:59 / kbh <br />FIELD PARAMETERS <br />Conductivity 228 umhos/cm FIELD 06/10/10 11:20 / <br />pH 7.60 s.u. FIELD 06/10/10 11:20 / <br />Temperature 16.7 °C FIELD 06/10/10 11:20 / <br />"' Performed by Sampler <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />Page 23 of 58