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ADZ Laboratories, Inc. <br /> 2773 Downhill Dnve Steamboat Sprigs, CO 80487(800)334-5493 <br /> Alexco Water 8r, Environmental Inc. ACZ Sample ID: L50184-01 <br /> Project ID: Schwarzwalder Mine Date Sampled: 02126119 14:19 <br /> Sample ID: MW-00 Date Received: 02127119 <br /> Sample Matrix: Groundwater <br /> Wet Chemistry <br /> Parameter EPA Method Dilution Result Qual XQ Units-- MDL POL .. <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 77.2 mg/L 2 20 03/04/19 0:00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 03/04/19 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 03/04/19 0:00 enb <br /> Total Alkalinity 1 77.2 mg/L 2 20 03/04/19 0:00 enb <br /> Cation-Anion Balance Calculation <br /> Cation-Amon Balance -1.4 % 09/23/19 0:00 Gale <br /> Sum of Anions 3.5 meq/L 09/23/19 0:00 Gale <br /> Sum of Cations 3.4 meq/L 09/23/19 0:00 Gale <br /> Chloride SM4500CI-E 1 38.9 mg/L 0.5 2 03/01/1914:18 wtc <br /> Cyanide,WAD SM4500-CN 1,E- 0.5 U mg/L 0.003 0.01 03/05/19 14:38 ttg <br /> Colorimetric w/distillation <br /> Fluoride SM450OF-C 1 0.28 B mg/L 0.05 0.3 03/06/1912:06 emk <br /> Nitrate/Nitrite as N M353.2-H2SO4 preserved 1 003 B mg/L 0.02 0.1 03/13/19 0:13 pjb <br /> Phosphate,total Calculation based on total U mg/L 0.06 0.2 09/23/19 0:00 Gale <br /> Phosphorus <br /> Phosphorus,total M3651-Auto Ascorbic Acid(digest) 1 U mg/L 0.02 005 03/07/1915:28 ttg <br /> Residue,Filterable SM2540C 1 214 mg/L 10 20 02/28/19 15:37 mh <br /> (TDS)@180C <br /> Residue,Non- SM2540D 1 U mg/L 5 20 02/28/19 10:36 kja <br /> Filterable(TSS) <br /> @105C <br /> Sulfate D516-02/-07-Turbidinnetnc 5 38.2 * mg/L 5 25 02/28/19 16:01 wtc <br /> TDS(calculated) Calculation 188 mg/L 09/23/19 0:00 Gale <br /> TDS(ratio- calculation 1.14 09/23/19 0.00 Gale <br /> measured/calculated) <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L50184-1909231416 Page 4 of 31 <br />