2019-10-10_HYDROLOGY - M1980244 (17)

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AC Laboratories, Inc. 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 HCltasca Denver, Inc. ACZ Sample ID: L43413-46 Project ID: HCT Date Sampled: 02105119 17:00 Sample ID: 12-HCT-WEEK44 Date Received: 03128118 Sample Matrix: Leachate Metals Analysis Parameter EPA Method Dilution Result Qual X0 Units MDL POL Date Analysf Calcium,dissolved M200.7 ICP 1 0.4 B mg/L 0.1 0.5 02/06/19 14:49 dcm Iron,dissolved M200.7 ICP 1 2.68 mg/L 0.02 0.05 02/06/19 14:49 dcm Magnesium,dissolved M200.7 ICP 1 0.9 B * mg/L 0.2 1 02/06/19 14:49 dcm Soil Analysis MethodParameter EPA Dilution Result Qual XQ Units MDL PQL Date Analyst Conductivity—Humidity SM2510B 1 255 umhos/cm 1 10 02/04/19 9:14 dbt Cell Test End of leach volumes D5744-12 and mass Interstitial Weight 1 133 g 02/04/19 0:00 dbt Leachate Volume 1 1000 mL 02/04/19 0:00 dbt Added Leachate Volume 1 891 g 02/04/19 0:00 dbt Recovered Oxidation Reduction D1498-08 1 441 my 1 1 02/04/19 9:14 dbt Potential(Eh) pH,Humidity Cell Test M9045D/M9040C pH 1 3.5 units 0.1 0.1 02/04/19 0:00 dbt pH measured at 1 19.9 C 0.1 0.1 02/04/19 0:00 dbt Wet Chemistry Parameter EPA Method Dilution Result Qual XQ Units MDILPQL Date Analyst: Acidity as CaCO3 SM231013-Titration 1 78 * mg/L 10 20 02/08/19 12:43 mh Alkalinity as CaCO3 SM2320B-Titration Bicarbonate as 1 U mg/L 2 20 02/11/19 0:00 emk CaCO3 Carbonate as CaCO3 1 U mg/L 2 20 02/11/19 0:00 emk Hydroxide as CaCO3 1 U mg/L 2 20 02/11/19 0:00 emk Total Alkalinity 1 U mg/L 2 20 02/11/19 0:00 emk Sulfate D516-02/-07-Turbidimetric 5 67.2 mg/L 5 25 02/07/19 14:31 wtc REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. HCT1902181608 Page 54 of 78