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www.energylab.com Helena MT 877- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />Analytical frcepanceSince 195? Gillette, WY 866- 686 -7175 a Rapid City. SD 888 -672 -1225 • Colle¢e Station, Tx 888- 690 -2218 <br />Client: O'Connor Design Inc <br />Project: CM -25 <br />Analyte <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/18/12 <br />Work Order: C12050462 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500 -H B Analytical Run PHSC_101- C_120515A <br />Sample ID: pH 6.86 Initial Calibration Verification Standard 05/15/12 09:05 <br />pH 6.83 s.0 0.010 100 98 102 <br />Method: A4500 -H B Batch R159595 <br />Sample ID: C12050521- 004ADUP Sample Duplicate Run: PHSC_101- C_120515A 05/15/12 09 53 <br />pH 7.40 S, U. 0.010 0.0 3 <br />Qualifiers: <br />L - Analyte reporting limit ND - Not detected at the reporting limit <br />DC - Minimum detectable concentration <br />