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wwwoe oab.com Helena, W 877-472-0711 a Billings, W 800-7354488 • Casper, WY 888-235-0515 <br />- . - 2as,1W Gillette, WY 866-606-7115 • Rapid City, SD 888-672-1225 • College Station, 7X 888-680-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 07/02/10 <br />Project: Schwartzwalder Water Monitoring Program Collection Date: 06/10/10 12:25 <br />Lab ID: C10060510-013 DateReceived: 06/11/10 <br />Client Sample ID: SW-GS Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifier RL QCL Method Analysis Date / By <br />DATA QUALITY <br />A/C Balance (± 5) -2.95 % Calculation 06/25/10 07:59 / kbh <br />Anions 2.24 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 142 mg/L Calculation 06/25/10 07:59 / kbh <br />TDS Balance (0.80 - 1.20) 1.08 Calculation 06/25/10 07:59 / kbh <br />FIELD PARAMETERS <br />Conductivity 238 umhos/cm FIELD 06/10/10 12:25 / <br />pH 7.64 s.u. FIELD 06/10/10 12:25 / <br />Temperature 17.7 'C FIELD 06/10/10 12:25 / <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 25 of 58