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ENERGY <br />LABORATORIES <br />www.energylab.com <br />Client: Cotter Corporation <br />Project: Schwartz GW 9/26/2012 S26569 <br />Method: E353.2 <br />Sample ID: MBLK -1 <br />Nitrogen, Nitrate +Nitrite as N <br />Sample ID: LCS -2 Laboratory Control Sample <br />Nitrogen, Nitrate +Nitrite as N 2.53 mg /L <br />Sample ID: LFB -3 Laboratory Fortified Blank <br />Nitrogen, Nitrate +Nitrite as N 1.98 mg /L <br />Sample ID: C12091083 -001 HMS Sample Matrix Spike <br />Nitrogen, Nitrate +Nitrite as N 2.74 mg /L <br />Sample ID: C12091083- 001HMSD Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate +Nitrite as N 2.76 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Analytical Excellence Since 1952 <br />Method Blank <br />0.004 mg /L 0.003 <br />Helena, MT 877 - 472 -0711 ► Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />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 />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: TECHNICON_121003A <br />ND - Not detected at the reporting limit. <br />Revised Date: 10/26/12 <br />Report Date: 10/22/12 <br />Work Order: C12091083 <br />Batch: R165343 <br />10/03/12 10:42 <br />Run: TECHNICON_121003A 10/03/12 10:45 <br />0.10 101 90 110 <br />Run: TECHNICON_121003A 10/03/12 10:47 <br />0.10 101 90 110 <br />Run: TECHNICON_121003A 10/03/12 10:55 <br />0.10 107 90 110 <br />Run: TECHNICON_121003A 10/03/12 10:57 <br />0.10 108 90 110 0.7 10 <br />Page 15 of 21 <br />