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,~ <br />_~ <br />Reporting Period August 4, 1997 -August 11, 1997 <br />Current Schedule <br />Main Crossing (Wall F-1 and F-2) Begin 8/4 Complete 9/12 <br />Electric Borehole Road In Progress Complete 8/27 <br />Shaft #3 Bench Begin 8/14 Complete 9/9 <br />Main Shaft Benches and Drainage In Progress Complete 9/9 <br />Pond SG-1 In Progress Complete 9115 <br />Landing #2 Road Completed <br />Water Tank Extension Indefinite Hold <br />Lower Sylvester Gulch Road Begin 8/27 Complete 10/15 <br />Transmission Line Begin 8/11 Complete 9/5 <br />Field Monitoring and Observations <br />2 <br />A complete field inspection was conducted Wednesday afternoon, August 6, 1997, and again on <br />Monday, August 11, 1997 to observe and evaluate what impacts the heavy rains had on the <br />stability of slopes within the project area. <br />RPE: Site lines for completed slope excavations (south slope) for Phase lA and 1B showed <br />no movement on August 6 or August 11. Phase 1C cut slopes (in progress) were also stable. <br />The RPE access road cut slope experienced minor sloughing into the road ditch, however, the <br />ditch remains open and free running. <br />Sylvester Gulch Main Road: Cut slopes and other disturbed slopes adjacent to widened <br />sections of the Lower Sylvester Gulch road showed no failures or slumping on August 6 or <br />August 11, however, a significant amount of soil had washed into the ditches and road. No <br />failures, movement, or new cracking was observed at the failed fill area (Station 62 to 68) on <br />August 6 or August 11. All other pioneered sections of the main road appeared stable, <br />including both approaches to the main crossing (F-walls). <br />Landing #2 Road: The light-use road to Landing #2 was inspected on August 6. Soil cut <br />slopes appeared stable throughout the length of the road. Numerous portions of the road had <br />evidence of sheet flow, and portions of the road ditch directly above the substation were filled <br />with sediment. The road surface in this location was saturated, but no slumping or failures <br />were observed. <br />Dewatering Borehole Road: The sight lines and slope conditions remain as previously <br />reported. The heavy Tuesday and Sunday rains appeared to have no effect on this slope. <br />Minor seepage associated with sandstone strata along this road continues. MCC will continue <br />to monitor these slopes. <br />