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SLOPE STABILITY <br />INTERIM INSPECTION REPORT <br />AREA Wolf Creek Drainage Fill DATE g/6/86 <br />T1ME 6:00 o.m. WEATHER Cloudv. 60's ° <br />1. Debris, organic matter, coal, etc., present in fill none visible. Debris and <br />vegetation has been removed downslooe ahead of construction of the under- <br />drain. <br />2. General gradation and characteristics of material gradation of core and <br />fill is as specified. Fine granular material has been cast into previous pit <br />over the previously installed underdrain. Large blocky material has been place <br />in unoerarain as specs sea. <br />3. Presence of water, sur ace and ground none present in the active pit or <br />emergino from the underdrain. <br />4. Condition of underdrain (approx. current width, depth, and length), material <br />gradation and characteristic, compaction, presence of water Current placement <br />is approximately 20' - 25' wide by 12' - 20' deep. Current length of under- <br />drain is aooroximately 2700'. Blockv material rolling to the bottom. finer <br />material is above. No visible sign of flowing water is evident. <br />S. General material movement No unexpected movement evident. <br />6. <br />Proximity and treatment of seep points None observed. <br />7. Condition of slope fill surface (grading, cracks or sloughing, erosion, <br />revegetation) Fill surface has not been rough graded as of this inspection. <br />8. Recommendation Continued observation and inspection as construction progresses <br />downslooe. <br />9. Accountability <br />I certify the preceding observations and comments to be true and accurate to <br />the best of my knowledge. <br />fJ, Pugust 11 , 1986 <br />-V7T--da-m-es G. Schlenvogt Date <br />Colorado P.E. 17627 <br />. Apt; 11 1986 <br />