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/4Wd=' Laboratories, Inc. <br />2773 Downhill Drive Steamboat Somas. CO 80487 (800) 334-5493 <br />Rio Grande Silver, Inc. ACZ Sample ID: L25209-04 <br />Project ID: BO 33504 Date Sampled: 06/30/15 11:45 <br />Sample ID: FIELD EQUIP BLANK Date Received: 07/01/15 <br />Sample Matrix: Surface Water <br />Metals Analysis <br />Wet Chemistry <br />.. <br />• <br />o <br />'tuai A& <br />I <br />l- <br />..� <br />'1,'i <br />SM5310B <br />Aluminum, dissolved <br />M200.7 ICP <br />--taution-Resuit <br />1 <br />5 <br />U <br />mg/L <br />0.03 <br />0.2 <br />07/09/15 17:54 <br />jjc <br />Arsenic, dissolved <br />M200.8 ICP -MS <br />1 <br />U <br />mg/L <br />0.0002 <br />0.001 <br />07/10/15 11:53 <br />mfm <br />Boron, dissolved <br />M200.7 ICP <br />1 <br />0.02 <br />B <br />mg/L <br />0.01 <br />0.05 <br />07/09/15 17:54 <br />jjc <br />Cadmium, dissolved <br />M200.8 ICP -MS <br />1 <br />0.0007 <br />0.8 <br />mg/L <br />0.0001 <br />0.0005 <br />07/10/15 11:53 <br />mfm <br />Calcium, dissolved <br />M200.7 ICP <br />1 <br />0.1 <br />U <br />mg/L <br />0.1 <br />0.5 <br />07/09/15 17:54 <br />jjc <br />Cobalt, dissolved <br />M200.7 ICP <br />1 <br />jlf <br />U <br />mg/L <br />0.01 <br />0.05 <br />07/09/15 17:54 <br />jjc <br />Copper, dissolved <br />M200.8 ICP -MS <br />1 <br />0.0006 <br />B <br />mg/L <br />0.0005 <br />0.003 <br />07/14/15 22:21 <br />mfm <br />Iron, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.02 <br />0.05 <br />07/09/15 17:54 <br />jjc <br />Lead, dissolved <br />M200.8 ICP -MS <br />1 <br />2.5 <br />U <br />mg/L <br />0.0001 <br />0.0005 <br />07/10/15 11:53 <br />mfm <br />Magnesium, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.2 <br />1 <br />07/09/15 17:54 <br />jjc <br />Manganese, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.005 <br />0.03 <br />07/09/15 17:54 <br />jjc <br />Nickel, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.008 <br />0.04 <br />07/09/15 17:54 <br />jjc <br />Potassium, dissolved <br />M200.7 ICP <br />1 <br />0.2 <br />B <br />mg/L <br />0.2 <br />1 <br />07/09/15 17:54 <br />jjc <br />Selenium, dissolved <br />M200.8 ICP -MS <br />1 <br />U <br />mg/L <br />0.0001 <br />0.0003 <br />07/10/15 11:53 <br />mfm <br />Silica, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.2 <br />1 <br />07/09/15 17:54 <br />jjc <br />Silver, dissolved <br />M200.8 ICP -MS <br />1 <br />U <br />mg/L <br />0.00005 <br />0.0003 <br />07/10/15 11:53 <br />mfm <br />Sodium, dissolved <br />M200.7 ICP <br />1 <br />U <br />mg/L <br />0.2 <br />1 <br />07/09/15 17:54 <br />jjc <br />Uranium, dissolved <br />M200.8 ICP -MS <br />1 <br />U <br />mg/L <br />0.0001 <br />0.0005 <br />07/10/15 11:53 <br />mfm <br />Zinc, dissolved <br />M200.8 ICP -MS <br />1 <br />0.003 <br />B <br />mg/L <br />0.002 <br />0.005 <br />07/10/15 11:53 <br />mfm <br />Wet Chemistry <br />REPIN.02.06.05.01 * Please refer to Qualifier Reports for details. <br />L25209-1507241357 Page 12 of 45 <br />• <br />o <br />t <br />l- <br />Carbon, dissolved <br />SM5310B <br />1 U <br />* mg/L <br />1 <br />5 <br />07/23/15 15:33 <br />jlf <br />organic (DOC) <br />Chloride <br />M300.0 - Ion Chromatography <br />1 U <br />mg/L <br />0.5 <br />2.5 <br />07/10/15 3:25 <br />bsu <br />Fluoride <br />SM450OF-C <br />1 U <br />` mg/L <br />0.05 <br />0.3 <br />07/08/1513:38 <br />enb <br />Hardness as CaCO3 <br />SM2340B - Calculation <br />U <br />mg/L <br />0.8 <br />4 <br />07/24/15 11:20 <br />calc <br />Nitrate as N, dissolved <br />Calculation: NO3NC2 minus NO2 <br />0.06 B <br />mg/L <br />0.02 <br />0.1 <br />07/24/15 11:20 <br />calc <br />Nitrate/Nitrite as N, <br />M353.2 - Automated <br />1 0.06 B <br />mg/L <br />0.02 <br />0.1 <br />07/01/15 17:22 <br />jlf <br />dissolved <br />Cadmium Reduction <br />Nitrite as N, dissolved <br />M353.2 - Automated <br />1 U <br />mg/L <br />0.01 <br />0.05 <br />07/01/15 17:22 <br />jlf <br />Cadmium Reduction <br />Sulfate <br />M300.0 - Ion Chromatography <br />1 U <br />mg/L <br />0.5 <br />2.5 <br />07/10/15 3:25 <br />bsu <br />REPIN.02.06.05.01 * Please refer to Qualifier Reports for details. <br />L25209-1507241357 Page 12 of 45 <br />