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1 :11110 A Ilk www.ejwgflab.com Helena, MT 677-472-0711 • Billings, MT 600-735-4489 a Casper, WY 888-235-0515 <br />--PA-003, <br />Aad#at£re 8nw 2- IZ2 Gillette, WY 866-686-7175 • Rapid City, SO 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 12/02/10 <br />Project: Schwartzwalder Water Monitoring Program - SW Work Order: C10101123 <br /> <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2320 B Batch: R139253 <br />Sample ID: MBLK 2 Method Blank Run: MANTECH_101029B 10/29/10 16:24 <br />Alkalinity, Total as CaC03 3 mg/L 1 <br />Bicarbonate as HC03 4 mg/L 1 <br />Sample ID: LCS1 Laboratory Control Sample Run: MANTECH_101029B 10/29/10 16:40 <br />Alkalinity, Total as CaC03 205 mg/L 5.0 101 90 110 <br />Sample ID: C10101110-001ADUP 2 Sample Duplicate Run: MANTECH_101029B 10/29/10 19:01 <br />Alkalinity, Total as CaC03 298 mg/L 5.0 0.6 10 <br />Bicarbonate as HC03 333 mg/L 5.0 0.6 10 <br />Sample ID: 010101110-001AMS Sample Matrix Spike Run: MANTECH_101029B 10/29/10 19:09 <br />Alkalinity, Total as CaC03 429 mg/L 5.0 106 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 37