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AraZ Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> HCItasca Denver, Inc. ACZ Sample ID: L43414-30 <br /> Project ID: HCT Date Sampled: 10116118 17:00 <br /> Sample ID: PC3-HCT-WEEK28 Date Received: 03128118 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> Parameter EPA Method Dilution Result Qual XQ Units MDL PQL JJJ[MrMJJ= <br /> Calcium,dissolved M200.7 ICP 1 18.2 mg/L 0.1 0.5 10/17/18 19:25 aeh <br /> Iron,dissolved M200.7 ICP 1 10.2 mg/L 0.02 0.05 10/17/18 19:25 aeh <br /> Magnesium,dissolved M200.7 ICP 1 2.9 * mg/L 0.2 1 10/17/18 19:25 aeh <br /> Soil Analysis <br /> Parameter EPA Method Dilution Result Qua[ XQ Units MDL PQL Date Analyst <br /> Conductivity—Humidity SM2510B 1 356 * umhos/cm 1 10 10/15/18 9:15 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 121 g 10/15/18 0:00 dbt <br /> Leachate Volume 1 100 mL •10/15/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 866 g 10/15/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-0s 1 397 my 1 1 10/15/18 9:15 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 3.5 units 0.1 0.1 10/15/18 0:00 dbt <br /> pH measured at 1 20.2 * C 0.1 0.1 10/15/18 0:00 dbt <br /> Wet Chemistry <br /> MethodParameter EPA Dil tion Res It Qual XQ Units MDL -QL ate Analyst: <br /> Acidity as CaCO3 SM231013-Titration 1 84 mg/L 10 20 10/23/18 11:51 kja <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U mg/L 2 20 10/23/18 0:00 emk <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 10/23/18 0:00 emk <br /> Hydroxide as CaCO3 1 U mg/L 2 20 10/23/18 0:00 emk <br /> Total Alkalinity 1 U mg/L 2 20 10/23/18 0:00 emk <br /> Sulfate D516-02/-07-Turbidimetric 5 96.4 mg/L 5 25 10/18/1810:34 wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 56 of 75 <br />