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AraZ <br /> Laboratories, Inc. -0 <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> HCItasca Denver, Inc. ACZ Sample ID: L434O9-44 <br /> Project ID: HCT Date Sampled: 01122119 17:00 <br /> Sample ID: B5-HCT-WEEK42 Date Received: 03/28/18 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> MethodParameter EPA Dilution Result Qual X0 Units MDL PQLDate Analyst <br /> Calcium,dissolved M200.71CP 1 2.2 mg/L 0.1 0.5 01/24/19 15:37 dcm <br /> Iron,dissolved M200.71CP 1 U mg/L 0.02 0.05 01/24/19 15:37 dcm <br /> Magnesium,dissolved M200.7 ICP 1 1.4 mg/L 0.2 1 01/24/19 15:37 dcm <br /> Soil Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL PQL Date Analyst <br /> Conductivity—Humidity SM2510B 1 123 umhos/cm 1 10 01/21/19 9:10 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 105 g 01/21/19 0:00 dbt <br /> Leachate Volume 1 1000 mL 01/21/19 0:00 dbt <br /> Added <br /> Leachate Volume 1 894 g 01/21/19 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 473 my 1 1 01/21/19 9:10 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 5.2 * units 0.1 0.1 01/21/19 0:00 dbt <br /> pH measured at 1 20.8 C 0.1 0.1 01/21/19 0:00 dbt <br /> Wet Chemistry <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL PQL Date Analyst <br /> Acidity as CaCO3 SM231OB-Titration 1 46 mg/L 10 20 01/25/19 11:29 kja <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U * mg/L 2 20 01/25/19 0:00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U * mg/L 2 20 01/25/19 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 01/25/19 0:00 enb <br /> Total Alkalinity 1 U * mg/L 2 20 01/25/19 0:00 enb <br /> Sulfate D516-02/-07-Turbidimetric 5 56.1 mg/L 5 25 01/29/19 14:33 Wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1902181608 Page 28 of 78 <br />