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nww.encq?1181).com <br />ilDt <br />A#X.E=WkM Am <br />1 - Billings, MT 801-735-4419 • Casper, WY 888-235-1515 <br />u y, Sd41118-972-1225 • Cdlege S66, TX 485-6104218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/17/10 <br />Project: Schwartzwalder Water Monitoring Program-Discharge Work Order: C10110468 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500-S F Analytical Run: TITRATION_101112A <br />Sample ID: ICV Initial Calibration Verification Standard 11/12/10 09:03 <br />Sulfide 117 mg/L 1.0 102 80 120 <br />Method: A4500-S F <br />Sample ID: MBLK7-101112 Method Blank <br />Sulfide ND mg/L <br />Sample ID: C10110468-0011MS Sample Matrix Spike <br />Sulfide 22.7 mg/L <br />Sample ID: C10110468-0011MSD Sample Matrix Spike Duplicate <br />Sulfide 23.5 mg/L <br />Batch: 101112-SULFIDE-TTR-W <br />Run: TITRATION-1 011 12A 11/12/10 08:58 <br />0.6 <br />Run: TITRATION_101112A 11/12/10 13:59 <br />1.0 99 80 120 <br />Run: TITRATION_101112A 11/12/10 14:01 <br />1.0 102 80 120 3.5 20 <br />Oualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 23 <br />