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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />College Station, TX 888.690.2218 • Gillette. WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />05/20/15 <br />Project: Schwartz - GW 4/21/15 S27905, S27908 <br />Work Order: <br />C15040681 <br />Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E353.2 <br />Batch: R1986061 <br />Lab ID: MBLK-1 Method Blank <br />Run: TECHNICON 150424A <br />04/24/15 11:26 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L <br />0.01 <br />Lab ID: LFB-3 Laboratory Fortified Blank <br />Run: TECHNICON_150424A <br />04/24/15 11:31 <br />Nitrogen, Nitrate+Nitrite as N 1.92 mg/L <br />0.10 <br />98 90 110 <br />Lab ID: C15040662-001DMS Sample Matrix Spike <br />Run: TECHNICON_150424A <br />04/24/15 11:36 <br />Nitrogen, Nitrate+Nitrite as N 2.67 mg/L <br />0.10 <br />89 90 110 <br />S <br />- Matrix spike recoveries outside the acceptance range are considered matrix -related. <br />Lab ID: C15040662-001DMSD Sample Matrix Spike Duplicate <br />Run: TECHNICON_150424A <br />04/24/15 11:39 <br />Nitrogen, Nitrate+Nitrite as N 2.69 mg/L <br />0.10 <br />90 90 110 0.7 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 13 of 21 <br />