2019-10-10_HYDROLOGY - M1980244 (16)

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AraZ Laboratories, Inc. 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 HCltasca Denver, Inc. ACZ Sample ID: L43416-31 Project ID: HCT Date Sampled: 10123118 17:00 Sample ID: PP4-HCT-WEEK29 Date Received: 03/28/18 Sample Matrix: Leachate Metals Analysis Parameter EPA Method Dilution Result Qual XQ Units MDL -w •. Calcium,dissolved M200.71CP 1 2.5 mg/L 0.1 0.5 10/31/18 16:02 aeh Iron,dissolved M200.71CP 1 0.02 B * mg/L 0.02 0.05 10/31/18 16:02 aeh Magnesium,dissolved M200.7 ICP 1 0.4 B mg/L 0.2 1 10/31/18 16:02 aeh Soil Analysis Parameter EPA Method Dilution Result Qual XQ Units MDL PQL Date Analyst Conductivity—Humidity SM2510B 1 22 umhos/cm 1 10 10/22/18 9:18 dbt Cell Test End of leach volumes D5744-12 and mass Interstitial Weight 1 196 * g 10/22/18 0:00 dbt Leachate Volume 1 1000 * mL 10/22/18 0:00 dbt Added Leachate Volume 1 917 * g 10/22/18 0:00 dbt Recovered Oxidation Reduction D1498-08 1 310 * my 1 1 10/22/18 9:18 dbt Potential(Eh) pH,Humidity Cell Test M9045D/M9040C pH 1 6.0 units 0.1 0.1 10/22/18 0:00 dbt pH measured at 1 20.0 C 0.1 0.1 10/22/18 0:00 dbt Wet Chemistry MethodParameter EPA Dilution Result Qual XQ Units MDLPOL Date Analyst Acidity as CaCO3 SM231013-Titration 1 U mg/L 10 20 10/26/18 14:32 mh Alkalinity as CaCO3 SM2320B-Titration Bicarbonate as 1 U mg/L 2 20 10/29/18 0:00 enb CaCO3 Carbonate as CaCO3 1 U mg/L 2 20 10/29/18 0:00 enb Hydroxide as CaCO3 1 U mg/L 2 20 10/29/18 0:00 enb Total Alkalinity 1 U mg/L 2 20 10/29/18 0:00 enb Sulfate D516-02/-07-Turbidimetric 1 1.4 B mg/L 1 5 10/25/18 15:40 wtc REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. HCT1811150946 Page 68 of 75