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e • I ' <br /> A CZ Laboratories, Inc. <br /> 2773 Downhill Dnve Steamboat Springs, CO 80487(800)334-5493 <br /> Ouray Silver Mines ACZ Sample ID: L69171-01 <br /> Project ID: Date Sampled: 10105121 15:30 <br /> Sample ID: RT20211005 Date Received: 10112121 <br /> Sample Matrix: Soil <br /> Soil Analysis <br /> �Parameter EPA Method Dilution Result QualaUnits MOL <br /> Acid Generation M600/2-78-054 1 3 1 13.4 * t CaCO3/Kt 0.31 3.1 12/01/21 17.00 jpb <br /> Potential(calc) <br /> Acid Neutralization M60012-78-0541 3 1 84.0 t CaCO3/Kt 1 5 12/01/21 17:00 jpb <br /> Potential(calc) <br /> Acid-Base Potential M600/2-78-0541 3 1 70.6 t CaCO3/Kt 12/01/21 17:00 jpb <br /> (calc) <br /> Neutralization M600/2-78-054 3.2 3- 1 8.4 % 0.1 0.5 11/18/21 16-06 jpb <br /> Potential as CaCO3 Modified(No Heat) <br /> pH,(1312) M9045D/M9040C <br /> pH 8.8 Units 0.1 0.1 12/02/210:00 ZLN <br /> Temperature 199 Units 0.1 0.1 12/02/21 0:00 ZLN <br /> Sulfur Forms M600/2-78-054 3.2.4-MOD <br /> Sulfur HCI Residue 1 045 % 0.01 0.1 11/23/21 0:00 jpb <br /> Sulfur HNO3 Residue 1 002 B % 0.01 0.1 11/23/21 0:00 jpb <br /> Sulfur Organic 1 002 B % 0.01 0.1 11/23/21 0:00 jpb <br /> Residual <br /> Sulfur Pyritic Sulfide 1 043 % 0.01 0.1 11/23/21 0.00 jpb <br /> Sulfur Sulfate 1 0.08 B * % 0.01 01 11/23/21 0:00 jpb <br /> Sulfur Total 1 0.53 % 0.01 0.1 11/23/21 0:00 jpb <br /> Total Sulfur minus 1 0.45 % 0.01 01 11/23/21 0:00 jpb <br /> Sulfate <br /> Soil Preparation <br /> Parameter EPA •• Dilution • •. - <br /> Air Dry at 34 Degrees USDA No. 1, 1972 11/11/21 15:00 jpb <br /> C <br /> Crush and Pulverize EPA-600/2-78-054 3.1.3 11/17/21 16:00 jpb <br /> (Ring&Puck) <br /> Synthetic Precip. M1312 10/28/21 5:40 zln <br /> Leaching Procedure <br /> Synthetic Precip. M1312, DI Water 10/28/21 7.43 zln <br /> Leaching Procedure <br /> REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. <br /> L691 71-21 1 2031 01 8 Page 4 of 25 <br />