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AraZ Laboratories, Inc. ' <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> Alexco Environmental Group (US)Inc. ACZ Sample ID: L43814-04 <br /> Project ID: Date Sampled: 04118118 12:16 <br /> Sample ID: SW-AWD Date Received: 04119118 <br /> Sample Matrix: Surface Water <br /> Wet Chemistry <br /> MethodPairameter EPA Dilution Result Qual XQ uniti MDLDate Analyst <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 56.0 mg/L 2 20 04/26/18 0,00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 04/26/18 0.00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 04/26/18 0:00 enb <br /> Total Alkalinity 1 56.0 mg/L 2 20 04/26/18 0:00 enb <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 4.2 % 05/14/18 0:00 calc <br /> Sum of Anions 2.3 meq/L 05/14/18 0:00 calc <br /> Sum of Cations 2.5 meq/L 05/14/18 0:00 calc <br /> Chloride SM4500CI-E 1 42.5 mg/L 0.5 2 04/25/18 8:03 las <br /> Cyanide,WAD SM4500-CN 1,E- 0.5 U mg/L 0.003 0.01 04/23/18 14:26 kea <br /> Colorimetric w/distillation <br /> Fluoride SM450OF-C 1 0.26 B mg/L 0.05 0.3 04/24/1818:37 emk <br /> Hardness as CaCO3 SM2340B-Calculation 94 mg/L 0.2 5 05/14/18 0:00 talc <br /> (dissolved) <br /> Nitrate/Nitrite as N M353.2-H2SO4 preserved 1 U mg/L 0.02 0.1 04/24/18 14:15 las <br /> Phosphate,total Calculation based on total U mg/L 0.06 0.2 05/14/18 0:00 calc <br /> Phosphorus <br /> Phosphorus,total M365.1 -Auto Ascorbic 1 U * mg/L 0.02 0.05 04/25/18 11:41 kea <br /> Acid(digest) <br /> Residue,Filterable SM2540C 1 158 mg/L 10 20 04/20/18 10:45 mh <br /> (TDS)@180C <br /> Residue,Non- SM2540D 1 U mg/L 5 20 04/23/18 15:17 ecc <br /> Filterable(TSS) <br /> @ 105C <br /> Sulfate D516-02/-07-Turbidimetric 1 U * mg/L 1 5 04/30/18 8:28 jmm <br /> TDS(calculated) Calculation 124 mg/L 05/14/18 0:00 calc <br /> TDS(ratio- Calculation 1.27 05/14/18 0:00 calc <br /> measured/calculated) <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L43814-1805141049 Page 7 of 49 <br />