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SLOPE STABILITY <br />INTERIM DiSPECTION REPORT <br />AREA Wolf Creek Drainage Fill DATE 10-11-85 <br />TIME _ 1:311 nm WEATHER __ (;old. damn <br />1. Debris, organic matter, coal, etc., present in fill none visible <br />2. General gradation and characteristics of material gradation of core and upper fill is <br />specified. Fine granular material is being cast into previous pit. Large blocky material <br />is being placed in underdrain as specified, underdrain materials range from 18" - 36". <br />3. Presence of water, surface and ground surface water from above the active pit was <br />being diverted to the underdrain and this water was emerging rom t e underdrain m t <br />form of groundwater. No water present in active pit. <br />4. Condition of underdrain (approx. current width, depth and length), material graduation <br />and characteristic, compaction, presence of water current placement approximately <br />20' - 25' wide by 15' - 20' deep. Approximately 500' m eng su s an is tow rom <br />sur ace water ever e a ova a ac ive pi an emerging rom a un er ram. <br />5. General material movement none evident <br />6. <br />7 <br />8. <br />Proximity and treatment of seep points not applicable <br />Condition of slope fill surface (grading, cracks or sloughing, erosion, revegetation <br />not applicable <br />Recommendation continued observation <br />9. Accountability <br />I declare the preceding observations and notes true and accurate to the best <br />of my knowledge. <br />Richard A. lsaec Date <br />Colorado P.E. 20320 <br />