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INTRODUCTION <br /> Loloff Construction, Inc. proposes to mine the property located in the Southeast 1/4 of the <br /> Northwest 1/4 and the South 1/2 of the Northeast 1/4 of the Northwest 1/4, Section 4, <br /> Township 5 North, Range 65 West, Sixth P.M. in Weld County, Colorado. The property <br /> is bounded by Balsam Avenue on the east, and private property on the north, south, <br /> and west. State Highway 263 (8th Street) is less than a quarter of a mile south of the <br /> subject property. The proposed mining operation will extract gravel reserves from <br /> locations adjacent to man-made structures. The rules and regulations of the Division of <br /> Reclamation, Mining, and Safety (DRMS) require that any mining within a 200 foot <br /> setback of a man-made structure show thorough engineering analysis that the proposed <br /> mining will not cause damage. The accepted method of demonstrating this is through a <br /> slope stability analysis. This report contains an overview of the prior geotechnical <br /> investigation results by Empire Laboratories, Inc., and the methodology used in the <br /> analysis of the mining slopes and their estimated affects on all man-made structures. <br /> Recommendations regarding acceptable setbacks from man-made structures have also <br /> been included. <br /> OVERVIEW <br /> The DRMS mining plan proposes that the property will be mined in 2 phases. The <br /> reclamation plan, Exhibits E and F, propose the future use for this property to be wildlife <br /> habitat. The mining will occur at 3H:1V slopes. Concurrent reclamation is planned such <br /> that the reclamation embankment will be constructed as the mining progresses. The <br /> reservoir will cover an estimated 43 surface acres when full. Actual surface area will <br /> depend on the final configuration of the reservoir after reclamation is complete. <br /> GEOTECHNICAL DATA <br /> Preliminary geotechnical investigations have been performed by Empire Laboratories, <br /> Inc. J&T Consulting, Inc. (JT) estimated soil strength parameters based on the <br /> information from the geotechnical investigation, which was provided to JT by Loloff <br /> Construction, and other stability analyses that have been performed on gravel mining <br /> operations along the front range. Table 1, on the following page, represents a summary <br /> of the soil strength parameters that were used in this stability analysis. <br /> Loloff Construction, Inc.-Loloff Pit <br /> E J&T Consulting, Inc. Slope Stability A� / <br /> age1 <br />