Laserfiche WebLink
Contents 0 <br />1.0 Introduction <br />1.1 Purpose of Investigation ..........................................................................................1-1 <br />1.2 Regulatory Background ...........................................................................................1-2 <br />1.3 Land Uses in Area of Mine ......................................................................................1-3 <br />1.4 Description of Rock Materials Exposed by Mining .............................................1-4 <br />2.0 Investigation Approach and Activities <br />2.1 Field Sampling ........................................................................................................... 2-1 <br />2.1.1 Development Rock and Ore Samples ............................................................ 2-1 <br />2.1.2 Background Soil Samples ................................................................................ 2-2 <br />2.1.3 Native Soil Underlying Development Rock Piles ....................................... 2-2 <br />2.2 Laboratory Analyses .................................................................................................2-2 <br />2.2.1 Development Rock and Acid-Forming Potential Analyses ....................... 2-4 <br />2.2.2 Total Metals Analyses ...................................................................................... 2-5 <br />2.2.3 Meteoric Water Mobility Procedure Analyses ............................................2-6 <br />2.2.4 Geochemical Sorption Potential Analyses ................................................... <br />2.2.5 Physical Property Analyses ............................................................................2-6 <br />3.0 Assessment of Potential Acid--Forming Rock • <br />4.0 Assessment of Potential Toxic-Forming Rock <br />4.1 Potential for Direct Contact Risks ........................... .4-1 <br />.............................................. <br />4.1.1 Screening Level Evaluation ........................................................... .................4-1 <br />4.1.2 Further Evaluation of Arsenic in Development Rock ............... .................4-2 <br />4.1.3 Evaluation of Inorganic Constituents not Addressed by BLM .................4-6 <br />4.1.4 Background Soil Concentrations .................................................. .................4-6 <br />4.1.5 Summary of Findings ..................................................................... .................4-7 <br />4.2 Potential Leachate Migration Risks ....................................................... .................4-8 <br />4.2.1 Screening Level Evaluation ........................................................... .................4-9 <br />4.2.2 Volume of Percolation through Rock Piles ................................. ...............4-10 <br />4.2.3 Attenuation Capacity of Soil Underlying Rock Piles ................ ...............4-14 <br />5.0 Conclusions <br />6.0 References <br /> <br /> <br />TA64986-Denison Mines\Task Order 3 - DMO Sampling and Analysis Plan\Task 3.12 -Sail, Ore, Rack Data Assessment Repor"Sunday Rock R ipoMflnal report\ReporWinal SurMay Mints Group Soil Ore Rock <br />Data Assessment Report_051509.doc