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<br /> <br />May 23, 2000- Mobilized to site. Mine safety conducted. Set up equipment. Drilling <br />initiated for Low slump grout plug at 300 + 30 as measured from the tower. <br />May 24, 2000- Two holes drilled with LM 100 drill to 44 & 45 feet on assumed center <br />line in an attempt to intercept decant line. Mike Ley produced new information which <br />indicated that pipe could be as deep as 75'. Denver Grouting / HB contacted & <br />contracted Auger Drilling to locate pipe. <br />May 25-26, 2000- Auger Drilling drills 6 holes (#'s 3-8) away from assumed center line <br />in an attempt to intercept decant. 4 Holes were drilled to the east, 2 holes were drilled to <br />the west. No sign of gravel or pipe. <br />May 30, 2000 -Hole # 9 drilled back on assumed center line to 100' to no avail. <br />Hole # 10 (Grout hole # I) was attempted 5.5 feet to the North at approximate station <br />300 + 24. Resistance /Obstruction was encountered at 72'. DG utilized LM 100 drill & <br />hammer to intercept pipe & to install casing. Air was injected & communicated to the <br />riser tower verifying interception of pipe. <br />May 30, 2000- (Continued) Hole #11 (Grout hole # 2) was attempted on assumed center <br />line at 23.5 feet towards the tower at approximate station 300 + 0. Pipe encountered & . <br />hammer drilled. Hole was air tested & communicated to the riser tower, verifying <br />interception of decant. <br />May 31, 2000- Casing installed in Hole # 11 (Grout hole # 2) to approximately 72'. <br />Hole # 12 was located approximately 67' towards the tower at approximate station 200 + <br />30. This hole grazed the edge of the pipe. <br />Hole # 13 (Grout hole # 3) was drilled 16 inches to the West of hole #12. Center line of <br />pipe encountered. Hammer drilled & air tested. Confirmation made at riser tower. <br />May 31, 2000 - (Continued) Low mobility grout plug installed in Grout Hole # 1. <br />Slump of material averaged I.5 inches. Pressures recorded at the injection header ranged <br />from an initial pressure of 100 psi to 600 psi. 8 yards of low mobility grout placed. <br />Water at the tower was displaced during grouting operations. Flows at the tower were <br />reduced from an original 10 to l5 gallons of overflow a minute prior to grouting, to <br />nothing. <br />June 1, 2000- Slurry grouting operations initiated in Grout hole # 2. Immediate <br />displacement of water was recorded at the riser tower. Grouting of hole # 2 continued <br />until grout was detected at Grout hole # 3. Injection was then moved to hole # 3 and <br />continued until grout was detected at the riser. Calculated quantities were exceeded <br />indicating that grout apparently was flowing past the riser into the upper decant line. <br />Approximately 60+ yards of slurry were injected. <br />