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AraZ Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 l <br /> Alexco Environmental Group (US) Inc. ACZ Sample ID: L47927-05 <br /> Project ID: Date Sampled: 11101118 10:00 <br /> Sample ID: SW-BPL Date Received: 11/02/18 <br /> Sample Matrix: Surface Water <br /> Wet Chemistry <br /> Parameter EPA Method Dilution Result Qual • Date Analyst <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 67.6 mg/L 2 20 11/08/18 0:00 mh <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 11/08/18 0:00 mh <br /> Hydroxide as CaCO3 1 U mg/L 2 20 11/08/18 0:00 mh <br /> Total Alkalinity 1 67.6 * mg/L 2 20 11/08/18 0:00 mh <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance -3.0 % 11/20/18 0:00 calc <br /> Sum of Anions 1.7 meq/L 11/20/18 0:00 calc <br /> Sum of Cations 1.6 meq/L 11/20/18 0:00 calc <br /> Chloride SM4500CI-E 1 3.2 mg/L 0.5 2 11/06/1814:35 mss2 <br /> Cyanide,WAD SM4500-CN 1,E- 0.5 U mg/L 0.003 0.01 11/06/18 15:54 ttg <br /> Colorimetric w/distillation <br /> Fluoride SM450OF-C 1 U mg/L 0.05 0.3 11/15/1818:10 emk <br /> Hardness as CaCO3 SM2340B-Calculation 29 mg/L 0.2 5 11/20/18 0:00 calc <br /> (dissolved) <br /> Nitrate/Nitrite as N M353.2-H2SO4 preserved 1 U mg/L 0.02 0.1 11/14/18 0:03 pjb <br /> Phosphate,total Calculation based on total U mg/L 0.06 0.2 11/20/18 0:00 calc <br /> Phosphorus <br /> Phosphorus,total M365.1 -Auto Ascorbic 1 U mg/L 0.02 0.05 11/13/18 21:27 pjb <br /> Acid(digest) <br /> Residue, Filterable SM2540C 1 88 mg/L 10 20 11/03/18 16:27 nmc <br /> (TDS)@180C <br /> Residue, Non- SM2540D 1 U mg/L 5 20 11/02/18 13:27 kja <br /> Filterable(TSS) <br /> @105C <br /> Sulfate D516-02/-07-Turbidimetric 1 13.5 * mg/L 1 5 11/07/1813:34 mss2 <br /> TDS(calculated) Calculation 92.1 mg/L 11/20/18 0:00 talc <br /> TDS(ratio- Calculation 0.96 11/20/18 0:00 calc <br /> measured/calculated) <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L47927-1811201028 Page 9 of 51 <br />