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ADZ Laboratories, Inc. ' <br /> 2773 Downhill Dnve Steamboat Springs, CO 80487(800)334-5493 <br /> Ouray Silver Mines ACZ Sample ID: L43205-01 <br /> Project ID: 153178 Date Sampled: 03114118 21:33 <br /> Sample ID: GW-3R Date Received: 03/16/18 <br /> Sample Matrix: Ground Water <br /> Wet Chemistry <br /> Parameter EPA Moth od Dilution Result Qual ra units MDLs Date Analyst <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 39.3 mg/L 2 20 03/19/18 0.00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 03/19/18 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 03/19/18 0 00 enb <br /> Total Alkalinity 1 39.3 mg/L 2 20 03/19/18 0 00 enb <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 4.5 % 03/23/18 0 00 calc <br /> Sum of Anions 3.2 meq/L 03/23/18 0.00 calc <br /> Sum of Cations 3.5 meq/L 03/23/18 0 00 calc <br /> Chloride SM4500CI-E 1 1.0 B mg/L 0.5 2 03/19/1813:13 kea <br /> Conductivity @25C SM2510B 1 312 umhos/cm 1 10 03/19/18 18 23 enb <br /> Cyanide,total M335 4-Colonmetnc w/distillation 0.5 U mg/L 0.003 0.01 03/22/18 23 15 plb <br /> Fluoride SM450OF-C 1 0.19 B * mg/L 0.05 0.3 03/20/18 17 29 enb <br /> Hardness as CaCO3 SM2340B-calculation 159 mg/L 0.2 5 03/23/18 0-00 calc <br /> (dissolved) <br /> Lab Filtration(0.45um SOPWC050 1 03/20/18 12 52 enb <br /> filter) <br /> Lab Filtration(0.45um) M2007/2006/3005A 1 03/17/18 18 00 sck <br /> &Acidification <br /> Nitrate/Nitrite as N M353 2-H2SO4 preserved 1 0.17 mg/L 0.02 0.1 03/17/18 1.00 pjb <br /> pH(lab) SM4500H+B <br /> pH 1 7.9 H units 0.1 0.1 03/19/18 0:00 enb <br /> pH measured at 1 23.3 C 0.1 0.1 03/19/18 0:00 enb <br /> Phosphorus,ortho M3651-Automated Ascorbic Acid 1 U mg/L 0.02 0.05 03/16/18 23-51 pib <br /> dissolved <br /> Residue, Filterable SM2540C 1 202 mg/L 10 20 03/16/18 15:44 emk <br /> (TDS)@180C <br /> Residue, Non- SM2540D 1 16.0 B * mg/L 5 20 03/17/18 7 15 ecc <br /> Filterable(TSS) <br /> @ 105C <br /> Sulfate D516-02/-07-Turbidimetric 5 114 mg/L 5 25 03/16/18 12 41 kea <br /> TDS(calculated) Calculation 217 mg/L 03/23/18 0:00 calc <br /> TDS(ratio- Calculation 0.93 03/23/18 0-00 calc <br /> measured/calculated) <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L43205-1803231004 Page 3 of 22 <br />