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� Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />l\� 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 />Project: Schwartz - GW 4/21/15 S27905, S27908 <br />Analyte Count Result Units <br />Method: E200.8 <br />Lab ID: C15040681-002BMS3 <br />9 Sample Matrix Spike <br />Lab ID: C15040681-002BMSD <br />9 Sample Matrix Spike Duplicate <br />Antimony <br />1.13 mg/L <br />Arsenic <br />1.01 mg/L <br />Copper <br />0.989 mg/L <br />Iron <br />4.78 mg/L <br />Lead <br />1.07 mg/L <br />Manganese <br />4.71 mg/L <br />Silver <br />0.0922 mg/L <br />Thallium <br />0.959 mg/L <br />Zinc <br />0.974 mg/L <br />Method: E200.8 <br />Run: ICPMS4-C <br />Lab ID: LRB <br />7 Method Blank <br />04/24/15 20:58 <br />Antimony <br />0.0002 <br />mg/L <br />Copper <br />ND <br />mg/L <br />Manganese <br />ND <br />mg/L <br />Molybdenum <br />8E-05 <br />mg/L <br />Thallium <br />ND <br />mg/L <br />Uranium <br />2E-05 <br />mg/L <br />Zinc <br />ND <br />mg/L <br />Lab ID: C15040712-002CMS4 <br />7 Sample Matrix Spike <br />Antimony <br />0.0536 <br />mg/L <br />Copper <br />0.0444 <br />mg/L <br />Manganese <br />0.265 <br />mg/L <br />Molybdenum <br />0.0493 <br />mg/L <br />Thallium <br />0.0482 <br />mg/L <br />Uranium <br />4.80 <br />mg/L <br />Zinc <br />0.0588 <br />mg/L <br />Lab ID: 015040712-002CMSD <br />7 Sample Matrix <br />Spike Duplicate <br />Antimony <br />0.0559 <br />mg/L <br />Copper <br />0.0456 <br />mg/L <br />Manganese <br />0.278 <br />mg/L <br />Molybdenum <br />0.0525 <br />mg/L <br />Thallium <br />0.0504 <br />mg/L <br />Uranium <br />4.98 <br />mg/L <br />Zinc <br />0.0598 <br />mg/L <br />Lab ID: LFB <br />7 Laboratory Fortified Blank <br />Antimony <br />0.0513 <br />mg/L <br />Copper <br />0.0513 <br />mg/L <br />Manganese <br />0.0515 <br />mg/L <br />Molybdenum <br />0.0512 <br />mg/L <br />Thallium <br />0.0478 <br />mg/L <br />Qualifiers: <br />70 <br />130 <br />RL - Analyte reporting limit. <br />20 <br />ND - Not detected at the reporting limit <br />Batch: R198633 <br />Run: ICPMS4-C 150424A 04/24/1514:31 <br />0.0001 <br />3E-05 <br />3E-05 <br />3E-05 <br />6E-05 <br />9E-06 <br />0.0002 <br />Run: ICPMS4-C <br />Report Date: <br />05/20/15 <br />04/24/15 20:58 <br />0.0010 <br />107 <br />Work <br />Order: <br />C15040681 <br />RL <br />%REC <br />Low Limit <br />High Limit <br />RPD <br />RPDLimit Qual <br />0.0010 <br />70 <br />130 <br />Batch: 44484 <br />A <br />0.0010 <br />Run: ICPMS4-C 150424A <br />70 <br />04/24/1515:38 <br />Run: ICPMS4-C_150424A <br />96 <br />04/24/1515:43 <br />0.0010 <br />113 <br />70 <br />130 <br />0.8 <br />20 <br />0.0010 <br />101 <br />70 <br />130 <br />1.9 <br />20 <br />0.0050 <br />99 <br />70 <br />130 <br />1.3 <br />20 <br />0.030 <br />94 <br />70 <br />130 <br />0.9 <br />20 <br />0.0010 <br />107 <br />70 <br />130 <br />2.5 <br />20 <br />0.0010 <br />94 <br />70 <br />130 <br />2.5 <br />20 <br />0.0010 <br />92 <br />70 <br />130 <br />1.4 <br />20 <br />0.00050 <br />96 <br />70 <br />130 <br />1.3 <br />20 <br />0.010 <br />97 <br />70 <br />130 <br />1.2 <br />20 <br />Batch: R198633 <br />Run: ICPMS4-C 150424A 04/24/1514:31 <br />0.0001 <br />3E-05 <br />3E-05 <br />3E-05 <br />6E-05 <br />9E-06 <br />0.0002 <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 10 of 21 <br />Run: ICPMS4-C <br />150424A <br />04/24/15 20:58 <br />0.0010 <br />107 <br />70 <br />130 <br />0.0050 <br />89 <br />70 <br />130 <br />0.0010 <br />70 <br />130 <br />A <br />0.0010 <br />91 <br />70 <br />130 <br />0.00050 <br />96 <br />70 <br />130 <br />0.00030 <br />70 <br />130 <br />A <br />0.010 <br />92 <br />70 <br />130 <br />Run: ICPMS4-C_150424A <br />04/24/15 21:03 <br />0.0010 <br />112 <br />70 <br />130 <br />4.2 <br />20 <br />0.0050 <br />91 <br />70 <br />130 <br />2.8 <br />20 <br />0.0010 <br />70 <br />130 <br />4.6 <br />20 A <br />0.0010 <br />97 <br />70 <br />130 <br />6.3 <br />20 <br />0.00050 <br />101 <br />70 <br />130 <br />4.4 <br />20 <br />0.00030 <br />70 <br />130 <br />3.8 <br />20 A <br />0.010 <br />94 <br />70 <br />130 <br />1.6 <br />20 <br />Run: ICPMS4-C <br />150424A <br />04/24/1514:42 <br />0.0010 <br />103 <br />85 <br />115 <br />0.0010 <br />103 <br />85 <br />115 <br />0.0010 <br />103 <br />85 <br />115 <br />0.0010 <br />102 <br />85 <br />115 <br />0.0010 <br />96 <br />85 <br />115 <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 10 of 21 <br />