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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: L43406-47 <br /> Project ID: Date Sampled: 02112119 17:00 <br /> Sample ID: AP7-HCT-WEEK45 Date Received: 03/28/18 <br /> Sample Matrix: Leachate <br /> Soil Analysis <br /> Parameter EPA Method Dilution Result Qual XQ Units MDL PQL Date Analyst' <br /> Conductivity—Humidity SM2510B 1 10 umhos/cm 1 10 02/11/19 9:07 dbt <br /> Cell Test <br /> End of leach volumes D5744-12 <br /> and mass <br /> Interstitial Weight 1 140 g 02/11/19 0:00 dbt <br /> Leachate Volume 1 1000 mL 02/11/19 0:00 dbt <br /> Added <br /> Leachate Volume 1 898 g 02/11/19 0:00 dbt <br /> Recovered <br /> Oxidation Reduction D1498-08 1 477 my 1 1 02/11/19 9:07 dbt <br /> Potential(Eh) <br /> pH,Humidity Cell Test M9045D/M9040C <br /> pH 1 5.9 * units 0.1 0.1 02/11/19 0:00 dbt <br /> pH measured at 1 19.5 C 0.1 0.1 02/11/19 0:00 dbt <br /> Wet Chemistry <br /> EPA Method Dilution Result Qual XQ Units MDL POL Date Analyst; <br /> Acidity as CaCO3 SM23106-Titration 1 U mg/L 10 20 02/15/19 10:04 kja <br /> Alkalinity as CaCO3 SM2320B-Titration <br /> Bicarbonate as 1 2.4 B mg/L 2 20 02/16/19 0:00 kja <br /> CaCO3 <br /> Carbonate as CaCO3 1 U mg/L 2 20 02/16/19 0:00 kja <br /> Hydroxide as CaCO3 1 U mg/L 2 20 02/16/19 0:00 kja <br /> Total Alkalinity 1 2.4 B mg/L 2 20 02/16/19 0:00 kja <br /> Chloride SM4500CI-E 1 U mg/L 0.5 2 02/14/1913:53 wtc <br /> Cyanide,WAD SM4500-CN 1,E- 0.5 U mg/L 0.003 0.01 02/19/19 16:49 ttg <br /> Colorimetric w/distillation <br /> Fluoride SM450OF-C 1 0.28 B mg/L 0.05 0.3 02/18/1911:13 emk <br /> Nitrate/Nitrite as N M353.2-H2SO4 preserved 1 U mg/L 0.02 0.1 02/21/19 0:31 pjb <br /> Residue,Filterable SM2540C 1 34 mg/L 10 20 02/14/19 10:50 mh <br /> (TDS)@180C <br /> Sulfate D516-02/-07-Turbidimetric 1 U mg/L 1 5 02/13/19 14:14 wtc <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> HCT1903191337 Page 6 of 52 <br />