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• www.eiw6ab.com Helena, MT 877 - 472 -0711 - Billings, MT 800 - 735 - 4489 - Casper, WY 888- 235 -0515 <br />- Aedrtln►Frrrd7raaAEou ilSY Gillette, WY 866 -686 -7175 - Rapid City, SO 88B -672 -1225 - College Station, TX 88B- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 07/16/13 <br />Project: Schwartz GW 6/23/13 S26948 Work Order: 013060891 <br />�Anal - yte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB- B207477 <br />Sample ID: ICV Initial Calibration Verification Standard 07/02/13 08 22 <br />Nitrogen, Nitrate +Nitrite as N 22.0 mg /L 0.060 101 90 110 <br />Method: E353.2 <br />Batch: B R207477 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B207477 <br />07/02/13 08:23 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0 005 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B207477 <br />07/02/13 08:24 <br />Nitrogen, Nitrate +Nitrite as N <br />0.995 mg /L <br />0.010 <br />100 90 110 <br />Sample ID: B13062453- 003DMS <br />Sample Matrix Spike <br />Run- SUB- B207477 <br />07/02/13 09:03 <br />Nitrogen, Nitrate +Nitrite as N <br />0.987 mg /L <br />0.010 <br />99 90 110 <br />Sample ID: B13062453- 003DMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B207477 <br />07/02/13 09:05 <br />Nitrogen, Nitrate +Nitrite as N <br />0.981 mg /L <br />0.010 <br />98 90 110 <br />0.6 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 14 of 20 <br />