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southwest corner of the main pit, which had been documented in prior <br />reports. <br />A sump pump continues to be utilized for controlling water in the pit. The <br />sump located in the northeast corner of the main pit was noted to contain <br />water. Although at the time of inspection, no visible seepage into the sump <br />could be detected. It is generally assumed that the sump is locally lowering <br />the groundwater in advance of the main pit floor. Borehole DH-03-01 from <br />the 2003 geotechnical investigation is approximately 200 feet west of the <br />sump, and was noted during this investigation to have groundwater at an <br />approximate depth of 4-5 foot below the existing ground surface (6,340 <br />feet). <br />4) In the 2005 report, the rock mass in the southern expansion area was noted <br />as more massive with fewer discernable foliation surfaces than the rock <br />exposed in the main pit of the quarry. More importantly, the average <br />orientation of the foliation surfaces measured in the expansion area <br />between the elevations of 6,990 to 7,075 feet is different than the dominant <br />foliation mapped within the middle level and main pit of the quarry. The <br />average dip of the 2006 measurements for this foliation set (hereinafter <br />referred to as F-2) is 24° to the southwest, whereas the average dip of the <br />original foliation set F-1 in the rest of the quarry is 39° to the south- <br />southeast. In evaluating the merged dataset for the southern expansion <br />area using both the 2004 through the 2006 data, the average dip of foliation <br />F-2 is 22° to the southwest. <br />5) During the investigation in 2005, an occasional foliation was measured that <br />dips to the north between 38° and 52°. The data collected reflecting this <br />northerly dip were mainly obtained from the expansion area of the quarry <br />from the temporary walls and this orientation was not found in any notable <br />-11- <br />