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Homestake Pitch Reclamation Project <br />2005 Geotechnica! Observations <br />Indian Creek and Tie Camp Creek Waste Rock Dumps <br />1. Indian Creek Waste Rock Dump <br />a) "10800" Level <br />Site Description: Identical to that of past reports for 1996 through 2004. <br />2005 Observations: The 2005 observations are similar to those reported for this azea <br />during the past nine years. Visual inspection of the area has revealed no evidence of <br />settling or slumping of the dump material in 2005. Drainage channels are <br />functioning as designed. <br />b) "10780-10650" Level <br />Site Description: Identical to that of past reports for 1996 through 2004. <br />2005 Observations: The 2005 observations are similar to past observations. Visual <br />inspection of the area has revealed no evidence of settling or slumping of the dump <br />material in 2005. Drainage channels are functioning as designed. <br />c) "10650 -10600" Level <br />Site Description: Identical to that of past reports for 1996 through 2004. <br />2005 Observations: In October 2001 an obstruction was removed from Piezometer <br />IC10600, allowing it to be used for the collection of piezometric surface data. In June <br />of 2005, a Level fluctuation of 9.0 feet was observed in this piezometer, which in the <br />short timeframe of monitoring is the greatest fluctuation in water elevation since the <br />obstruction was removed. This was likely a result of a very wet spring following <br />drought conditions in 2001 through 2003. The water level dropped back to its <br />normal range the following month. This is consistent with the water levels in several <br />other piezometers that normally increase in June and stabilize the following month <br />and is deemed as an acceptable seasonal variation. <br />d) "10725 -10525" Level <br />Site Description: Identical to that of past reports for 1996 through 2004. The minor <br />overlap between this level and other bench designations reflects the original bench <br />configuration. <br />2005 Observations: Piezometers IC10600 and IC10525 bound this area. The seasonal <br />maximum water level fluctuation observed in IC10525 was 7.9 feet in a total dump <br />thickness of approximately 229 feet. Data from IC10600 showed a maximum <br />seasonal fluctuation of 9.0 feet. <br />