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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: L43413-33 <br /> Project ID: HCT Date Sampled: 11106118 17:00 <br /> Sample ID: 12-HCT-WEEK31 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 1.0 mg/L 0.1 0.5 11/09/18 1:06 dcm <br /> Iron,dissolved M200.7 ICP 1 1.53 mg/L 0.02 0.05 11/09/18 16:45 aeh <br /> Magnesium,dissolved M200.7 ICP 1 1.2 mg/L 0.2 1 11/09/18 1:06 dcm <br /> Soil Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL •• •. <br /> Conductivity—Humidity SM2510B 1 232 umhos/cm 1 10 11/05/18 9:14 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 139 * g 11/05/18 0:00 dbt <br /> Leachate Volume 1 1000 mL 11/05/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 905 * g 11/05/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 441 my 1 1 11/05/18 9:14 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 3.8 * units 0.1 0.1 11/05/18 0:00 dbt <br /> pH measured at 1 20.2 C 0.1 0.1 11/05/18 0:00 dbt <br /> Wet Chemistry, <br /> MethodParameter EPA Dilution Result Qual XQ Units MDLDate Analyst <br /> Acidity as CaCO3 SM231OB-Titration 1 74 mg/L 10 20 11/12/18 15:42 enb <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U * mg/L 2 20 11/12/18 0:00 emk <br /> CaCO3 <br /> Carbonate as CaCO3 1 U * mg/L 2 20 11/12/18 0:00 emk <br /> Hydroxide as CaCO3 1 U * mg/L 2 20 11/12/18 0:00 emk <br /> Total Alkalinity 1 U mg/L 2 20 11/12/18 0:00 emk <br /> Sulfate D516-02/-07-Turbidimetric 5 73.7 mg/L 5 25 11/08/18 12:00 mss2 <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 54 of 75 <br />