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ADZ Laboratories, Inc. ° ° " <br /> 2773 Downhill Dnve Steamboat Springs, CO 80487(800)334-5493 <br /> :15irim 0 <br /> Ouray Silver Mines ACZ Sample ID: L73467-04 <br /> Project ID: Date Sampled: 05/25/22 15:11 <br /> Sample ID: GW-99 Date Received: 05126122 <br /> Sample Matrix: Groundwater <br /> Wet Chemistry <br /> Parameter EPA Method Dilution Result Qual X0 Units MOL POLDate Analyst <br /> Alkalinity as CaCC3 SM2320B-Titration <br /> Bicarbonate as 1 34.8 mg/L 2 20 06/01/22 0:00 jck <br /> CaCO3 <br /> Carbonate as CaCC3 1 <2 U mg/L 2 20 06/01/22 0:00 jck <br /> Hydroxide as CaCO3 1 <2 U mg/L 2 20 06/01/22 0-00 jck <br /> Total Alkalinity 1 34.8 mg/L 2 20 06/01/22 0-00 jck <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 0.0 % 07/15/22 0 00 calc <br /> Sum of Anions 2.1 meq/L 07/15/22 0:00 calc <br /> Sum of Cations 2.1 meq/L 07/15/22 0:00 calc <br /> Chloride SM4500CI-E 1 0.70 B * mg/L 05 2 05/31/22 16:32 bls <br /> Conductivity @25C SM2510B 1 231 umhos/cm 1 10 06/01/22 3:24 jck <br /> Cyanide,total M335 4-Colonmetnc w/distillation 0.5 <0.003 U mg/L 0.003 0.01 06/06/22 10:20 bls <br /> Fluoride SM450OF-C 1 0.15 B mg/L 015 0.35 06/06/2217:42 emk <br /> Hardness as CaCO3 SM2340B-Calculation 95 mg/L 0.2 5 07/15/22 0:00 calc <br /> (dissolved) <br /> Nitrate/Nitrite as N M353 2-H2SO4 preserved 1 0 755 mg/L 002 0.1 06/04/22 22:40 plb <br /> pH(lab) SM4500H+B <br /> pH 1 7.7 H units 0.1 0.1 06/01/22 0.00 jck <br /> pH measured at 1 21.2 C 0.1 0.1 06/01/22 0-00 jck <br /> Phosphorus,total M3651-AutoAscorbicAcid 1 <0.01 U mg/L 0.01 0.05 06/10/22 2:42 pjb <br /> Residue, Filterable SM2540C 1 154 * mg/L 20 40 05/31/22 15:20 emk <br /> (TDS)@180C <br /> Residue, Non- SM2540D 1 <5 U mg/L 5 20 06/01/22 13:49 anc <br /> Filterable(TSS) <br /> @ 105C <br /> Sulfate D516-02/-07/-11-TURBIDIMETRIC 5 66.9 mg/L 5 25 05/29/22 12:53 mll1 <br /> TDS(calculated) Calculation 136 mg/L 07/15/22 0:00 calc <br /> TDS(ratio- Calculation 1.13 07/15/22 0:00 calc <br /> measured/calculated) <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L73467-2207151358 Page 10 of 25 <br />