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ENERGY <br />LAF3 O RATO RI LS <br />www.energylab.com Helena, MT 877 - 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 235 - 0515 <br />' e.4 kca nc° Shwa 1052 Gillette, WY 866- 686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888- 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/11/12 <br />Project: Schwartz GW 8/3/2012 S26545 Work Order: C12080184 <br />Analyte Count Result Units <br />Method: E353.2 <br />Sample ID: MBLK -1 <br />Nitrogen, Nitrate +Nitrite as N <br />Sample ID: LCS -2 Laboratory Control Sample Run: TECHNICON_120810A 08/10/12 15:22 <br />Nitrogen, Nitrate +Nitrite as N 2.44 mg /L 0.10 98 90 110 <br />Sample ID: LFB -3 Laboratory Fortified Blank Run: TECHNICON_120810A 08/10/12 15:25 <br />Nitrogen, Nitrate +Nitrite as N 2.02 mg /L 0.10 103 90 110 <br />Sample ID: C12080177 -001AMS Sample Matrix Spike Run: TECHNICON_120810A 08/10/12 15:47 <br />Nitrogen, Nitrate +Nitrite as N 3.19 mg /L 0.10 98 90 110 <br />Sample ID: C12080177 -001AMSD Sample Matrix Spike Duplicate Run: TECHNICON_120810A 08/10/12 15:50 <br />Nitrogen, Nitrate +Nitrite as N 3.22 mg /L 0.10 99 90 110 0.9 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg /L 0.06 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: TECHNICON_120810A <br />ND - Not detected at the reporting limit. <br />Page 13 of 19 <br />Batch: R163128 <br />08/10/12 15:20 <br />