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AraZ Laboratories, Inc. ` ` A <br /> 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 <br /> HCItasca Denver, Inc. ACZ Sample ID: L43413-32 <br /> Project ID: HCT Date Sampled: 10130118 17:00 <br /> Sample ID: 12-HCT-WEEK30 Date Received: 03/28/18 <br /> Sample Matrix: Leachate <br /> Soil Analysis <br /> MethodParameter EPA Dilution Result Qual XQ Units MDL PQL T Date Analyst <br /> Conductivity—Humidity SM2510B 1 218 H umhos/cm 1 10 10/29/2108 9:14 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 138 g 10/29/18 0:00 dbt <br /> Leachate Volume 1 1000 mL 10/29/18 0:00 dbt <br /> Added <br /> Leachate Volume 1 931 g 10/29/18 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 528 H my 1 1 10/29/2108 9:14 dbt <br /> Potential(Eh) <br /> pH, Humidity Cell Test M9045D/M9040C <br /> pH 1 3.8 * units 0.1 0.1 10/29/2108 0:00 dbt <br /> pH measured at 1 20.5 C 0.1 0.1 10/29/2108 0:00 dbt <br /> Wet Chemistry <br /> MethodParameter EPA PQ ---Date-Analyst <br /> Acidity as CaCO3 SM2310B-Titration 1 70 mg/L 10 20 11/06/1811:45 kja <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 U mg/L 2 20 11/05/18 0:00 enb <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 11/05/18 0:00 enb <br /> Hydroxide as CaCO3 1 U mg/L 2 20 11/05/18 0:00 enb <br /> Total Alkalinity 1 U mg/L 2 20 11/05/18 0:00 enb <br /> Chloride SM4500CI-E 1 U mg/L 0.5 2 11/04/1814:41 wtc <br /> Cyanide,WAD SM4500-CN I,E- 2.5 U mg/L 0.02 0.05 11/06/18 16:30 ttg <br /> Colorimetric w/distillation <br /> Fluoride SM450OF-C 4 1.6 mg/L 0.2 1 11/06/1816:58 emk <br /> Nitrate/Nitrite as N M353.2-H2SO4 preserved 1 U mg/L 0.02 0.1 11/08/18 0:07 pjb <br /> Residue,Filterable SM2540C 1 122 mg/L 10 20 11/02/18 16:18 emk <br /> (TDS)@180C <br /> Sulfate D516-021-07-Turbidimetric 5 72.0 mg/L 5 25 11/05/18 10:09 rbt <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1811150946 Page 53 of 75 <br />