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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: L43417-54 <br /> Project ID: HCT Date Sampled: 04102119 17:00 <br /> Sample ID: PP6-HCT-WEEK52 Date Received: 03128118 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> Parameter EPA Method Dilution Result •ua[ X0 Units MDL PQL Date Analyst <br /> Calcium,dissolved M200.7 ICP 1 5.9 mg/L 0.1 0.5 04/03/19 19:17 dcm <br /> Iron,dissolved M200.7 ICP 1 1.63 mg/L 0.02 0.05 04/03/19 19:17 dcm <br /> Magnesium,dissolved M200.7 ICP 1 5.3 mg/L 0.2 1 04/03/19 19:17 dcm <br /> Soil Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDLPQL Date Analyst <br /> Conductivity--Humidity SM2510B 1 219 umhos/cm 1 10 04/01/19 9:19 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 153 g 04/01/19 0:00 dbt <br /> Leachate Volume 1 1000 mL 04/01/19 0:00 dbt <br /> Added <br /> Leachate Volume 1 860 g 04/01/19 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 412 my 1 1 04/01/19 9:19 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 3.7 units 0.1 0.1 04/01/19 0:00 dbt <br /> pH measured at 1 18.9 * C 0.1 0.1 04/01/19 0:00 dbt <br /> Wet Chemistry <br /> PQL Date Analyst <br /> Acidity as CaCO3 SM231 OB-Titration 1 30 mg/L 10 20 04/10/19 14:13 emk <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U mg/L 2 20 04/09/19 0:00 kja <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 04/09/19 0:00 kja <br /> Hydroxide as CaCO3 1 U mg/L 2 20 04/09/19 0:00 kja <br /> Total Alkalinity 1 U mg/L 2 20 04/09/19 0:00 kja <br /> Sulfate D516-02/-07-Turbidimetric 5 68.1 mg/L 5 25 04/06/1913:34 wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1904301601 Page 90 of 91 <br />