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Christv Woodward <br />July 31, 2008 <br />Page 4 <br />top surface at angles perpendicular to the development rock layers. Figures 4 through 4 show <br />the }Manned locations of the sampling; trenches. <br />The trenches are designed to excavate through the surficial laver of displaced rock on the <br />running surface of the facility and to expose the underlying development rock construction <br />lavers. A composite sample will then be collected from each trench, which is representative of <br />the layers exposed by the trench. 't'hree trenches and three corresponding composite samples <br />are planned to be collected from each development rock area with the exception of the <br />Carnation Mine. The development rock areas at the Carnation Mine have been generally <br />reclaimed and vegetation is currently established in these areas. In lieu of sample collection, <br />visual observation of the development rock will be conducted to confirm that the material is <br />similar to the development rock encountered at the other Sunday Group mines. Accordingly, <br />the development rock data collected from the other Sunday Group mines will be used to <br />characterize the Carnation Mine. <br />Surfidal Layer Resulting from <br />Gradina of Running Surface <br />Each development rock sample will be visually logged in-field for lithology, alteration, <br />mineralization and grain size according; the Unified Soil Classification Svstem (USCS). <br />Samples will be submitted for laboratory analysis of ABA, total metals, MWMP, and a subset <br />of these samples will he analyzed for soil-water characteristic curves and other geotechnical <br />parameters. Soil-water characteristic analyses will be performed by Daniel B. Stevens and <br />Associates, Inc. located in Albuquerque, New Mexico. <br />The purpose of the Nl MP analyses are to evaluate if the development rock max, potentially <br />leach toxic materials when in contact with precipitation. Consistent with recommendations <br />provided by DRMS (DBMS 2008b), the leachate collected from the MWMP will be analyzed <br />O 24986 • Denison\Task Order 3- DMO Sampling and Analysis Plan%Task 31 - Soil Ore Rock Data Collection PlanWnai Denison Sunday Mines Group Soil Ore Rock Data <br />Collection Work Plan dot <br />Figurt, ?. Diagrannnatic represcidation of development rock areas showing layering produced by <br />liicility construction and orientation of plarnaed swnpling trenches.