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AC Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> HCItasca Denver, Inc. ACZ Sample ID: L43413-44 <br /> Project ID: HCT Date Sampled: 01122119 17:00 <br /> Sample ID: 12-HCT-WEEK42 Date Received: 03/28/18 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> MethodParameter EPA Dilution Result Qual X0 Units MDL POL Date Analyst <br /> Calcium,dissolved M200.7 ICP 1 0.6 mg/L 0.1 0.5 01/24/19 15:55 dcm <br /> Iron,dissolved M200.7 ICP 1 2.83 mg/L 0.02 0.05 01/24/19 15:55 dcm <br /> Magnesium,dissolved M200.7 ICP 1 1.0 mg/L 0.2 1 01/24/19 15:55 dcm <br /> Soil Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL POL Date Analyst <br /> Conductivity—Humidity SM2510B 1 281 umhos/cm 1 10 01/21/19 9:14 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 134 * g 01/21/19 0:00 dbt <br /> Leachate Volume 1 1000 * mL 01/21/19 0:00 dbt <br /> Added <br /> Leachate Volume 1 899 g 01/21/19 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 465 * my 1 1 01/21/19 9:14 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 3.5 * units 0.1 0.1 01/21/19 0:00 dbt <br /> pH measured at 1 20.4 C 0.1 0.1 01/21/19 0:00 dbt <br /> Wet Chemistry <br /> Parameter EPA Method Dilution Result Qual XQ Units MDL PQL Date Analyst <br /> Acidity as CaCO3 SM231013-Titration 1 95 mg/L 10 20 01/25/19 12:18 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 83.1 * mg/L 5 25 01/31/1910:58 mss2 <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1902181608 Page 52 of 78 <br />