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• - www.ew6ab.com Helena,MT 877472-0711 •Billings,MT 808-735-4489•Casper,WY 888-235-0515 <br /> Gillette,WY 866-686-7175•Rapid City,SD 886-672-1225•College Station,TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 06/02/14 <br /> Project: Schwartz-SW 5/1/14 S27472 thru S27475 and S27467 Work Order: C14050155 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: A2320 B Batch: R186279 <br /> Lab ID: MBLK 2 Method Blank Run: MANTECH 140507A 05/07/14 16:19 <br /> Alkalinity,Total as CaCO3 ND mg/L 0.6 <br /> Bicarbonate as HCO3 ND mg/L 1 <br /> Lab ID: LCS_131219 Laboratory Control Sample Run:MANTECH_140507A 05/07/14 16:32 <br /> Alkalinity,Total as CaCO3 261 mg/L 5.0 105 90 110 <br /> Lab ID: C14050155-005ADUP 2 Sample Duplicate Run:MANTECH_140507A 05/07/14 16:48 <br /> Alkalinity,Total as CaCO3 45.1 mg/L 5.0 0.1 10 <br /> Bicarbonate as HCO3 55.0 mg/L 5.0 0.1 10 <br /> Lab ID: C14050155-005AMS Sample Matrix Spike Run:MANTECH_140507A 05/07/14 16:56 <br /> Alkalinity,Total as CaCO3 304 mg/L 5.0 103 80 120 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 9 of 35 <br />