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INTRODUCTION <br /> J-2 Contracting Company proposes to mine the property located in the South half of the <br /> Southwest quarter of Section 1, South half of the Southeast quarter of Section 1, North <br /> half of Section 12, and East half of the Southeast quarter of Section 11, Township 5 <br /> North, Range 65 West, Sixth P.M. in Weld County, Colorado. The property is bounded <br /> by the South Platte River on the south and east, Weld County Parkway on the west, and <br /> Cache la Poudre River on the north. The proposed mining operation will extract gravel <br /> reserves from locations adjacent to man-made structures. The rules and regulations of <br /> the Division of Reclamation, Mining, and Safety (DRMS) require that any mining within a <br /> 200 foot setback of a man-made structure show thorough engineering analysis that the <br /> proposed mining will not cause damage. The accepted method of demonstrating this is <br /> through a slope stability analysis. This report contains an overview of the methodology <br /> used in the analysis of the mining slopes and their estimated affects on all man-made <br /> structures. Recommendations regarding acceptable setbacks from man-made <br /> structures have also been included. <br /> OVERVIEW <br /> The DRMS mining plan proposes that the property will be mined in 4 pits. The mining <br /> will occur at 3H:1V slopes. Concurrent reclamation is planned such that the reclamation <br /> embankment will be constructed as the mining progresses. The reservoir will cover an <br /> estimated 183 surface acres when full. Actual surface area will depend on the final <br /> configuration of the reservoir after reclamation is complete. <br /> GEOTECHNICAL DATA <br /> Preliminary geotechnical investigations have been performed by Cesare, Inc. J&T <br /> Consulting, Inc. (JT) estimated soil strength parameters based on the information from <br /> the geotechnical investigation and other stability analyses that have been performed on <br /> gravel mining operations along the Front Range. Table 1, on the following page, <br /> represents a summary of the soil strength parameters that were used in this stability <br /> analysis. <br /> J-2 Contracting Company-DPG Pit <br /> Slope Stability Analysis <br /> J&T Consulting, Inc. Page 1 <br />