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Inter-Mountain Laboratories, Inc. <br />1673 Terra Avenue, Sheridan, Wyoming 82801 <br />Sample Analysis Report <br />(307) 672-8945 <br />CLIENT: Colowyo Coal Company, L.P. Date Reported: 11/28/2007 <br />5731 State Highway 13 Report ID: S0711285001 <br />Meeker, CO 81641 <br />Client Sample ID 001A Collection Date: 11/14/2007 2:25:00 PM <br />Project: Date Received: 11/15/2007 10:27:00 AM <br />Matrix: Water Lab ID: S0711285-001 <br /> Work Order: S0711285 <br />Analyses Result Units MCL Qual PAL Method Date Analyzed/Init <br />Field <br />pH 7.85 s.u. N/A Field 11/14/20071425 <br />Conductivity 2280 µmhos/cm N/A Field 11/14/20071425. <br />Temperature 11.3 °C N/A Field 11/14/20071425 , <br />Flow Rate (MGD) 0.058 MGD N/A Field 11/14/2007 1425 - --•- <br />General Parameters <br />pH 8.4 s.u. 6.5-9 0.1 SM 4500 H B 1 1/1 512007 2230 AF <br />Electrical Conductivity 2290 µmhos/cm N/A 5 SM 25106 11/15/2007 2230 AF <br />Total Dissolved Solids (180) 1860 mg/L N/A 10 SM 2540 11/16/2007 1300 MKS <br />Total Suspended Solids 440 mg/L 35 S SM 2540 11/16/2007 155 SNS <br />Settleable Solids 0.5 ml/I/hr N/A 0.2 SM 2540E 11/15/2007 1200 TJ <br />Total Recoverable Metals <br />Iron 0.10 mg/L 3.5 0.05 EPA 200.7 11/17/2007 550 RM <br />These results apply only to the samples tested. <br />qualifiers: Value exceeds Maximum Contaminant Level <br />E Value above quantitation range <br />J Analyte detected below quantitation limits <br />M Value exceeds Monthly Ave or MCL <br />S Spike Recovery outside accepted recovery limits <br />Reviewed by: ~---~ ' ~- <br />Lacey Ketron, Project Manager <br />B Analyte detected in the associated Method Blank <br />H Holding times for preparation or analysis exceeded <br />L Analyzed by a contract laboratory <br />ND Not Detected at the Reporting Limit <br />Page 1 of 1 <br />