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AOZ <br /> Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> Alexco Water& Environmental Inc. ACZ Sample ID: L52355-01 <br /> Project ID: Date Sampled: 06107119 08:03 <br /> Sample ID: MW-0 Date Received: 06111119 <br /> Sample Matrix: Groundwater <br /> Wet Chemistry <br /> Parameter EPA Method Dilution Result Qual • Units MDL • Date Analyst <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 115 mg/L 10 20 06/18/19 0:00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 10 20 06/18/19 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 10 20 06/18/19 0:00 enb <br /> Total Alkalinity 1 115 mg/L 10 20 06/18/19 0:00 enb <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 0.0 % 09/23/19 0.00 calc <br /> Sum of Anions 65 meq/L 09/23/19 0:00 talc <br /> Sum of Cations 6.5 meq/L 09/23/19 0:00 calc <br /> Chloride SM4500CI-E 1 318 mg/L 0.5 2 06/13/1914:18 Wtc <br /> Cyanide,WAD SM4500-CN 1,E- 0.5 U mg/L 0.003 0.01 06/17/19 12.02 rbt <br /> Colorimetric W/distillation <br /> Fluoride SM450OF-C 1 0.2 B mg/L 0.1 0.4 06/25/1917:17 enb <br /> Nitrate/Nitrite as N M353 2-H2SO4 preserved 1 1.86 mg/L 002 0.1 06/26/19 23:39 pjb <br /> Phosphate,total Calculation based on total U mg/L 0.03 0.2 09/23/19 0:00 calc <br /> Phosphorus <br /> Phosphorus,total M365.1 -Auto Ascorbic 1 U mg/L 001 0.05 06/17/19 16:02 mss2 <br /> Acid(digest) <br /> Residue,Filterable SM2540C 1 446 mg/L 20 40 06/12/19 12:28 eij <br /> (TDS)@180C <br /> Residue,Non- SM2540D 1 U * mg/L 5 20 06/12/19 11:48 eij <br /> Filterable(TSS) <br /> @105C <br /> Sulfate D516-02/-07-Turbidimetric 5 155 mg/L 5 25 06/12/1910:36 rbt <br /> TDS(calculated) Calculation 373 mg/L 09/23/19 0:00 calc <br /> TDS(ratio- Calculation 1.20 09/23/19 0:00 talc <br /> measured/calculated) <br /> REPIN.02.06.05 01 *Please refer to Qualifier Reports for details. <br /> L52355-1909231421 Page 4 of 38 <br />