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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: L43411-31 <br /> Project ID: HCT Date Sampled: 10123118 17:00 <br /> Sample ID: B8-HCT-WEEK29 Date Received: 03128118 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> Parameter EPA Method Dilution Result Qua[ X0 Units MDL POL Date Analyst: <br /> Calcium,dissolved M200.71CP 1 0.2 B mg/L 0.1 0.5 10/31/18 15:45 aeh <br /> Iron,dissolved M200.7 ICP 1 U mg/L 0.02 0.05 10/31/18 15:45 aeh <br /> Magnesium,dissolved M200.7 ICP 1 U mg/L 0.2 1 10/31/18 15:45 aeh <br /> Soil Analysis <br /> Method',Parameter EPA Dilution Result Qual XQ Units MDL PQL Date Analyst <br /> Conductivity—Humidity SM2510B 1 24 umhos/cm 1 10 10/22/18 9:12 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 144 g 1 0122/1 8 0:00 dbt <br /> Leachate Volume 1 1000 mL 10/22/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 906 g 10/22/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 450 my 1 1 10/22/18 9:12 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 4.5 units 0.1 0.1 10/22/18 0:00 dbt <br /> pH measured at 1 20.3 C 0.1 0.1 10/22/18 0:00 dbt <br /> Wet Chemistry <br /> MethodParameter --EPA Dilution Result Qual XQ Units MDL PQL Date Analyst <br /> Acidity as CaCO3 SM23108-Titration 1 U mg/L 10 20 10/26/18 13:22 mh <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U * mg/L 2 20 10/29/18 0:00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U * mg/L 2 20 10/29/18 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 10/29/18 0:00 enb <br /> Total Alkalinity 1 U mg/L 2 20 10/29/18 0:00 enb <br /> Sulfate D516-02/-07-Turbidimetric 1 3.5 B mg/L 1 5 10/25/1814:59 wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 39 of 75 <br />