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AraZ Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> HCItasca Denver, Inc. ACZ Sample ID: L4341O-33 <br /> Project ID: HCT Date Sampled: 11106118 17:00 <br /> Sample ID: B7-HCT-WEEK31 Date Received: 03128118 <br /> Sample Matrix: Leachate <br /> Metals Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL • �. <br /> Calcium,dissolved M200.7 ICP 1 2.6 mg/L 0.1 0.5 11/09/18 0:49 dcm <br /> Iron,dissolved M200.7 ICP 1 0.19 mg/L 0.02 0.05 11/09/18 16:29 aeh <br /> Magnesium,dissolved M200.7 ICP 1 0.7 B mg/L 0.2 1 11/09/18 0:49 dcm <br /> Soil Analysis <br /> Parameter EPA Method Dilution Result Qual XQ Units MDLDate Analyst <br /> Conductivity--Humidity SM2510B 1 94 umhos/cm 1 10 11/05/18 9:11 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 73 g 11/05/18 0:00 dbt <br /> Leachate Volume 1 1000 mL 11/05/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 927 * g 11/05/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 384 * my 1 1 11/05/18 9:11 dbt <br /> Potential(Eh) <br /> pH, Humidity Cell Test M9045D/M9040C <br /> pH 1 4.7 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 MDL POLDate Analyst <br /> Acidity as CaCO3 SM2310B-Titration 1 14 B * mg/L 10 20 11/12/18 15:18 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 1 37.3 mg/L 1 5 11/08/18 11:51 mss2 <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 36 of 75 <br />