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M :2C M I DCONTINENT <br />:.- .- <br />2381 South Plaza Drive P.O. Box 3388 Rapid City, SD 57709 <br />(605) 348-0111 -- www.thechemistrylab.com <br />URS FUCHS <br />GCC PUEBLO <br />3372 LIME ROAD <br />PUEBLO, CO 81004 <br />Page 1 of 1 <br />Parameter <br />Baghouse Dust, RM <br />Sample Site: <br />Down Composite of <br />MDL <br />hourly samples <br />Sampled: <br />06/18/15 at 11:59 PM <br />by Urs Fuchs <br />Sample Matrix: <br />Solid <br />Lab ID#: <br />20150622720 <br />Received: <br />06/22/15 at 09:00 AM <br />by Tanya Nelsen <br />Account: <br />1108P - GCC - Pueblo <br />Parameter <br />Result <br />Units <br />DF <br />MDL <br />PQL <br />Method <br />Analyst/Date <br />Physical Properties <br />pH (Saturated Paste) <br />11.4 <br />S. U. <br />1 <br />ARD 4.4.7 <br />DVA <br />08/04/15 <br />Metals - Total <br />Arsenic (As) <br />3.01 <br />mg/kg <br />2500 <br />0.155 <br />1.25 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Barium (Ba) <br />127 <br />mg/kg <br />2500 <br />0.078 <br />1.25 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Cadmium (Cd) <br />0.414 <br />mg/kg <br />2500 <br />0.045 <br />0.250 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Chromium (Cr) <br />15.5 <br />mg/kg <br />2500 <br />0.010 <br />0.250 <br />EPA SW846 6020 DRC <br />TNA <br />08/10/15 <br />Lead (Pb) <br />8.80 <br />mg/kg <br />2500 <br />0.005 <br />0.250 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Mercury (Hg) <br />24.28 <br />mg/kg <br />2500 <br />0.0876 <br />0.5000 <br />EPA SW846 7471 B <br />GRT <br />08/05/15 <br />Selenium (Se) <br />1.34 <br />mg/kg <br />2500 <br />0.253 <br />1.25 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Silver (Ag) <br />< 0.250 <br />mg/kg <br />2500 <br />0.010 <br />0.250 <br />EPA SW846 6020 <br />TNA <br />08/10/15 <br />Metals - MEP <br />Arsenic (As) <br />< 0.005 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Barium (Ba) <br />0.488 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Cadmium (Cd) <br />0.001 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Chromium (Cr) <br />< 0.001 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Lead (Pb) <br />< 0.001 <br />mg/L <br />1 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Mecury (Hg) <br />0.0020 <br />mg/L <br />1 <br />EPA SW846 7471 B <br />GRT <br />06/26/15 <br />Selenium (Se) <br />0.016 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Silver (Ag) <br />< 0.001 <br />mg/L <br />10 <br />EPA SW846 6020 <br />BLL <br />06/25/15 <br />Report Approved By: <br />Maw- <br />� E - i,/� <br />Report Approved On: 8/11/2015 6:18:51 AM <br />