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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: L43408-30 <br /> Project ID: HCT Date Sampled: 10116118 17:00 <br /> Sample ID: B3-HCT-WEEK28 Date Received: 03/28/18 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> Parameter EPA Method Dilution Result Qual XQ Units MDL •" <br /> Calcium,dissolved M200.7 ICP 1 0.8 mg/L 0.1 0.5 10/17/18 18:53 aeh <br /> Iron,dissolved M200.7 ICP 1 U * mg/L 0.02 0.05 10/17/18 18:53 aeh <br /> Magnesium,dissolved M200.7 ICP 1 1.4 * mg/L 0.2 1 10/17/18 18:53 aeh <br /> Soil Analysis <br /> Parameter EPA Method Dilution Result Qual XQ Units MDL POL Date Analyst' <br /> Conductivity--Humidity SM2510B 1 34 umhos/cm 1 10 10/15/18 9:09 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 88 * g 10/15/18 0:00 dbt <br /> Leachate Volume 1 100 * mL 10/15/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 919 * g 10/15/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 503 * my 1 1 10/15/18 9:09 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 6.5 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 Dilution Result " " Units MDL POLDate Analyst <br /> Acidity as CaCO3 SM2310B-Titration 1 U mg/L 10 20 10/23/18 10:54 kla <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 3.1 B 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 3.1 B mg/L 2 20 10/23/18 0:00 emk <br /> Sulfate D516-02/-07-Turbidimetric 1 10.8 mg/L 1 5 10/17/18 14:44 Wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 20 of 75 <br />