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ENERGY <br />Client: Cotter Corporation <br />Trust our People. Trust our Data. <br />Billings. MT 800.735.4489 • Casper. WY 888.235.0515 <br />College Station. TX 888.690.2218 • Gillette, WY 866.686.7175 • Helena. MT 877.412.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 10/19/15 <br />Project: Schwartz -SW 10/02/15 S28439 -S28441 Work Order: C15100183 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500 -F C Analytical Run• MANTECH_151007A <br />Lab ID: CCV-8644 Continuing Calibration Verification Standard 10/07/15 14 32 <br />Fluoride 2 04 mg/L 0 10 102 90 110 <br />Method: A4500 -F C Batch. R205095 <br />Lab ID: MBLK Method Blank Run. MANTECH_151007A 10/07/15 14.26 <br />Fluoride 0 04 mg/L 0 01 <br />Lab ID: LCS-8595 Laboratory Control Sample Run MANTECH_151007A 10/07/15 14:29 <br />Fluoride 2 04 mg/L 0.10 100 90 110 <br />Lab ID: C15100137-002AMS Sample Matrix Spike Run MANTECH_151007A 10/07/15 14.37 <br />Fluoride 22.1 mg/L 010 43 80 120 S <br />- Matrix spike recoveries outside the acceptance range are considered matrix -related <br />Lab ID: C15100137-002AMSD Sample Matrix Spike Duplicate Run: MANTECH_151007A 10/07/15 14.39 <br />Fluoride 22.6 mg/L 010 65 80 120 2.0 10 S <br />- Matrix spike recoveries outside the acceptance range are considered matrix -related <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 5 of 19 <br />