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Section 2 <br />Investigation Approach <br />Exhibit 2-2. Development Rock, Ore, and Soil Sample Collection and Analysis Information <br />Analyte Method Reporting Limit (Ng/L) <br />Acid-Base Accounting Sobek, 1978'(modifiecl) NA <br />Total Metals Inductively Coupled Plasma - Mass <br />Spectrometry with Multi-Acid Digestion <br />(EPA Method 601013/6020; 3550) NA <br />Geochemical sorption potential ASTM D4646-03 NA <br />Meteoric Water Mobility Procedure (MWMP) <br />Solid Samples ASTM E2242-07 NA <br />Development Rock Physical Characteristics Standard Proctor (ASTM D698) <br />Grain Size <br />(ASTM D422) <br />Specific Gravity (ASTM C127/1)854) <br />Capillary Moisture Retention (1)2325) <br />Saturated Hydraulic Conductivity <br />ASTM D5084 NA <br />MWMP Leachate Water Samples - Miscellaneous Analyses <br />pH SM 4500H B NA <br />Conductivity SM 2510B 10 prnhos/cm <br />Total Dissolved Solids SM 2540C 10,000 <br />Dissolved Oxygen SM 45000G Instrument Specific <br />Oxidation Reduction Potential SM 2580B Instrument Specific <br />Chloride EPA 300.0 1000 <br />Fluoride SM 450OF-C 100 <br />Sulfate EPA 300.0 1000 <br />Gross Alpha EPA 900.0 MDC <br />Gross Beta EPA 900.0 MDC <br />Nitrate EPA 353.2 50 <br />Nitrite EPA 353.3 '100 <br />Ammonia EPA 350.3 30 <br />Hardness SM 2340C NA <br />Aluminum - Total Recoverable EPA 200.8/200.7 100 <br />Iron - Total Recoverable EPA 200.8/200.7 30 <br />Mercury - Total Recoverable EPA 245.1 1 <br /> <br />2-3 <br />.7 <br />.7 <br />• <br />T: 54986-0enism Mines%Task Order 3 - DMO Sampling and Analysis Plan%Task 3.12 - Soil, Ore, Rock Data Assessment Repot\Sunday Rock Raportfnal report\ReportlFinal Sunday Mines Group Shc Ore Rock <br />Data Assessment Report_051509.dm